​Basic Overview

The MMS 3210/… dual channel shaft displacement transmitter is part of the improved MMS 3000 transmitter system, used for monitoring and protecting various types of turbomachinery. The new generation transmitter has highly flexible hardware options and diverse combination possibilities, which can be best adapted according to the needs of the corresponding factory. It can economically measure and monitor relative axis displacement and axis position through eddy current sensors.

Application Fields

Suitable for various types of turbomachinery, fans, compressors, gearboxes, pumps, and similar rotating machinery. Due to its bus capability, it is suitable for both large systems with programmable logic control and host computers used in power plants, refineries, and chemical plants, as well as small factories with only a few measurement points and decentralized data processing.

Function and Design

Can convert the input signal of the eddy current sensor into two independent signals proportional to the shaft displacement or relative expansion.

The integrated module and sensor monitoring can detect the fault function of sensors and module electronic devices. At this time, the normal output (channel clearing) status will change, and the 4-20 mA current output indicates 0 mA.

All necessary configurations are completed through MMS 3910W configuration software, and the transmitter is delivered with standard configurations suitable for most applications, or other configurations can be prepared at the factory.

Technical parameters

Sensor Input: Two independent inputs, suitable for series eddy current sensors such as PR 6422/… and PR 6423/…, with standard internal “Lemo” connectors and optional internal “Lemo” connectors with extended measurement range and external “Harting” connectors.

Measurement range: can be freely selected by configuring software according to the applied sensor.

Frequency range: The low-pass filter is 10Hz.

output characteristic

The standard consists of two current outputs proportional to the selected characteristics and related to system grounding, which can be freely allocated to the measurement channel; Choose between two galvanic separated current outputs proportional to the selected characteristics, or no current output.

The current output range is 0/4… 20 mA or 20… 4/0 mA, with a maximum load of 500 ohms and open circuit and short circuit protection.

Buffer sensor signal: Two signal outputs for analysis and diagnosis, one for each channel, proportional to the dynamic sensor signal, accessible through terminals, unfiltered voltage output of 2-10 V, with an error of ± 2.5%.

Limit and channel monitoring: A total of 5 functional outputs are provided, with limit values programmable for individual or combined measurements. Function outputs can be freely allocated through configuration software and have multiple output options.

Data interface: The standard is RS 232 interface, with optional RS485 bus (with epro protocol V2.0) and PROFIBUS DP.

Linear error: 0.25% at 25 ° C without sensors; When there are sensors, different models of sensors have different errors within the standard measurement range. The error for expanding the measurement range can be found in the data table.

Output temperature stability:<0.08%/10K.

Long term drift: up to 1% of full scale.

Power supply: Optional redundant power supply, decoupled through diodes, nominal+24 V DC, allowed voltage range+18…+31.2 V DC, power consumption depends on built-in options, maximum 6 W.

Shell: made of aluminum, corrosion-resistant, with a protection level of IP 65 (compliant with DIN 40050, IEC 144, CE certification), passed EMC testing according to EN 55011 and EN 61326.

Environmental conditions: The maximum allowable temperature of the installation surface and the working temperature range may vary depending on the installation method. The allowable relative humidity is 0… 95% (without condensation), and there are corresponding standards for vibration and impact.

Installation direction: It is best to have the cable gland facing downwards.

Weight: Depending on the selected hardware option, the maximum net weight is 1.3 kg and the maximum gross weight is 1.5 kg.

Module and sensor monitoring

Internal module monitoring continuously checks whether the input signal is within the predefined range, whether the cable between the transmitter and sensor is normal (no short circuit/disconnection), system voltage, etc. The status monitored by modules and sensors can be signaled through the switch contacts of functional outputs.

Main configuration parameters

Configure through MMS 3910W configuration software, which needs to be ordered separately. There are many adjustable parameters that vary depending on the selected operating mode and measurement function, including KKS identification, operating mode, sensor sensitivity, etc. for each channel.

Limit monitoring and functional output

There are five functional outputs, each of which can be assigned to limit values and channel clearing functions. The allocation between input channels and functional outputs can be freely selected. The output of channel clearing can be performed separately for each channel, or a combination of logical “OR” or “AND” can be used. The limit can be set for the sum of a single channel and a combination of two channels, and there are multiple alarm functions to choose from.

Size

Partial dimensional data is provided in millimeters. If the external converter option is selected, the housing comes with a Harting plug on the side, and dimensions can refer to the MMS 3120 data sheet. The M20/PG13.5 adapter is included with the delivery.

Operation mode

Provide different measurement modes, which can be configured through MMS 3910W configuration software. In the operating mode of a single or dual channel transmitter without combining channel results, the relative position corresponding to the sensor used can be measured; In the dual channel mode of combining channel results, multiple measurement modes can be achieved.

Input/Output

Includes standard RS 232 interface, redundant 2 x+24 V power supply voltage, optional binary output, current output, and corresponding pin allocation and LED allocation.

Ordering Options

The sensor inputs K1 and K2 are two identical input channels and cannot be used interchangeably. There are multiple options for communication methods, output characteristics, functional outputs, displays, converters, etc. Standard models and accessories available for immediate supply were also provided.

Equipment Overview

The MMS 3120/xxx-xxx dual channel bearing vibration transmitter is part of the improved MMS 3000 transmitter system, used for monitoring and protecting various types of turbomachinery. This transmitter has highly flexible hardware options and multiple combination possibilities, which can best adapt to the needs of the corresponding factory. It achieves economic measurement and monitoring of absolute bearing vibration through the use of seismic absolute vibration sensors, and complies with VDI 2056/.. And API 670 standards.

Application scenarios

Suitable for various types of turbomachinery, fans, compressors, gearboxes, pumps, and similar rotating machinery. Due to its bus capability, it is suitable for both large systems equipped with programmable logic controllers and hosts (such as power plants, refineries, and chemical plants) and small factories with few measurement points and scattered data processing. Can be used in conjunction with all EPR absolute bearing vibration sensors, such as PR 9268/20, PR 9268/30, PR 9268/60, and PR 9268/70.

Function and Design

Signal conversion: Convert the signal of a vibration sensor into two independent signals proportional to the vibration velocity or amplitude (peak to peak), or output signals proportional to the maximum value of these characteristic values.

Monitoring function: Integrated module and sensor monitoring function, capable of detecting faults in sensors and module electronic devices. In the event of an error, the status of the “OK” output will change, and the 4-20 mA current output will indicate 0 mA.

Configuration method: All necessary configurations are completed through MMS 3910W configuration software. The transmitter comes with standard configurations suitable for most applications at the factory, or other configurations can be made at the factory according to requirements.

Technical parameters

Sensor Input

Two independent inputs for PR 9268/20, PR 9268/30, PR 9268/60, and PR 9268/70 seismic vibration sensors.

Sensor connection: Harting connector.

Measurement range: It can be freely selected through configuration software based on the measurement range of the applied sensor.

Frequency range (-3dB): High pass filter 5/10/15 Hz; low-pass filter 50… 1500 Hz.

output

Current output: The standard is two current outputs, proportional to the selected characteristics and related to system grounding, which can be freely allocated to the measurement channel; Choose between two electrically isolated current outputs or no current output. The output range is 0/4… 20 mA or 20… 4/0 mA, with a maximum load of 500 ohms and open and short circuit protection.

Buffer sensor signal: Two signal outputs for analysis and diagnosis, one for each channel, proportional to the dynamic sensor signal, accessed through terminals, unfiltered voltage output of ± 5.0 V, with an error of ± 2.5%.

Function output: A total of 5 function outputs are provided, which can be freely allocated through configuration software to indicate limit values or clear channel status, etc. There are multiple options, such as no function output, 5 optocoupler outputs, 5 relay contacts (normally open contacts), 5 photoelectric MOS relays, etc.

Data interface: The standard is RS 232 interface, used for transmitter configuration and measurement data display; Optional RS485 bus (with epro protocol V2.0) and PROFIBUS DP.

Accuracy and stability

Linear error (without sensor): 0.2% at 25 ° C.

Linear error (with sensor):<2.2% at 25 ° C.

Output temperature stability:<0.08%/10K.

Long term drift: up to 1% of full scale.

Power supply: Optional redundant power supply, with diode decoupled LED, nominal voltage+24 V DC, voltage range+18…+31.2 V DC, power consumption depends on built-in options, maximum 6 W.

Shell and Protection

Shell: Aluminum, non corrosive.

Protection level: IP 65 (compliant with DIN 40050, IEC 144), CE certification, EMC testing in accordance with EN 55011 and EN 61326.

Environmental conditions (compliant with IEC 359, DIN 43745)

The maximum allowable temperature for installation surface is 65 ° C (90 ° C when installed on bolts with a spacing of 10mm).

Working temperature range: -20…+65 ° C (-20…+45 ° C when installed on 10 mm spaced bolts).

Allowable relative humidity: 0… 95%, no condensation.

Vibration and impact: impact 20 g/2 ms; Vibration at 5 g/60 Hz.

Installation and Dimensions: The preferred installation direction is downwards with the cable gland. Please refer to the drawing for the dimensions. The maximum net weight is 1.3 kg and the maximum gross weight is 1.5 kg.

Module and sensor monitoring

Internal module monitoring continuously checks the following functions: whether the input signal is within the predefined range; Is the cable between the transmitter and sensor normal (no short circuit/broken wire); System voltage. The monitoring status of modules and sensors can be signaled through the switch contacts of functional outputs.

Configure parameters and operating modes

Main configuration parameters: configured through MMS 3910W configuration software, adjustable parameters include KKS identification for each channel, operating mode, sensor sensitivity, series resistance of safety barriers, measurement range, etc. (may vary depending on the selected operating mode and measurement function).

Operation mode: Provides multiple measurement modes, which can be configured through MMS 3910W configuration software. In single channel and dual channel modes, the selectable measurement modes include vibration amplitude (SO-P, SP-P, MAX (x, y)) and vibration velocity (VRMS, MAX (x, y)).

Ordering options and standard models

Ordering Options

Communication: RS 232, RS 485, PROFIBUS DP.

Sensor inputs K1 and K2: two identical input channels that cannot be mixed, corresponding to PR 9268/.

Output characteristics: None; 2 with system reference (standard); Two electrical isolations.

Function output: None; 5 optocouplers (standard); 5 relay contacts (normally open contacts); 5 photoelectric MOS.

Display: None (standard); Equipped with an 8-bit display.

Standard Model

MMS 3120/010-000: Sensor PR 9268/.., RS 232, no bus communication, current output with common ground, no functional output, no display, order number 9100-03025.

MMS 3120/011-000: Sensor PR 9268/.., RS 232, no bus communication, current output with common ground, functional output, no display, order number 9100-03026.

Equipment Overview

The MMS 677X series dual channel bar chart indicator (including MMS 6771 and MMS 6772) belongs to the MMS 6000 series machine monitoring system and is used to display the measurement results of the MMS 6000 module. With a dual channel design, the MMS 6000 monitor can display data from two channels simultaneously. The bar chart resolution is 100 scale lines, corresponding to a range of 0… 100% or ± 50%, and can present measurement results at a resolution of 1%. It adopts a 19 inch design.

Technical parameters

power supply

Power supply method: Redundant power supply is achieved through two power inputs, which are separated by diodes. At least one power input is required to power the module.

Input voltage: 10…+24… 26 V DC.

Power consumption:<1 W.

signal input

Each indicator channel has one voltage input.

Input voltage: 0… 10 V.

Input impedance:>1 M Ω.

bar chart

Display type: Green segment display, with red segments every 10%.

Accuracy: ± 0.5% ± 1 segment of full scale.

Resolution: 101 segments.

Bar height: 75mm.

Bar chart width: 4.2 mm.

Environment and Protection

Protection level: The module complies with the IP 00 standard of DIN 40050; The front panel complies with the IP21 standard of DIN 40050.

Climate conditions: Complies with DIN 40040 KTF grade.

Working temperature range: 0…+65 ° C.

Storage and transportation temperature range: -30….+85 ° C.

Allowable relative humidity: 5… 95%, no condensation.

Allowable vibration: in accordance with IEC 68-2 Part 6, vibration amplitude within the range of 10… 55 Hz is 0.15 mm; vibration acceleration within the range of 55… 150 Hz is 16.6 m/s ².

Allowable impact: Complies with IEC 68-2 Part 29, with a peak acceleration of 98 m/s ² and a nominal impact duration of 16 ms.

Size and weight

Size: Using PCB/European standard card format that complies with DIN 41494 standard (100 x 160 mm); Width 20.0 mm (4 TE); Height 128.4 mm (3 HE); Length 160.0 mm.

Weight: Net weight approximately 320 g; Gross weight (including standard export packaging) approximately 450 g; Packaging volume approximately 2.5 dm ³.

Space requirement: Each 19 “rack can accommodate 14 modules (28 channels).

Order Information

MMS 6771 Bar Chart Indicator (0… 100%): Order Number 9100-00067.

MMS 6772 Bar Chart Indicator (± 50%): Order Number 9100-00075.

Equipment Overview

Martens Standard Signal Instrument S 1010 is designed to measure industrial standard signals of 0/4… 20mA or 0… 10VDC. It has a built-in transmitter power supply and can be directly connected to 2-wire and 3-wire transmitters (such as those used for pressure or temperature measurement). Its indication range and decimal point can be freely programmed within the range of ± 9999 (0) digits, suitable for signal measurement and monitoring in industrial sites.

Main characteristics

Display function: Equipped with a 14.2mm red LED display screen, the indication range is ± 9999 (0) digits, and the indication range and decimal point can be freely programmed.

Alarm output: Up to 2 alarm outputs, the switch performance of the alarm output can be programmed to the minimum or maximum function.

Analog output: It can generate analog output signals proportional to the input signal, including 0… 20mA/0… 10V DC, 4… 20mA/2… 10V DC. The output will automatically switch from current signal to voltage signal according to the load.

Shell and Protection: The on-site shell with snap on cover is used, equipped with 2 M16x1.5 cable glands (other specifications can refer to option 09 or customized as needed), and the protection level is IP65.

Other functions: Parameters can be programmed through the front film keyboard; Equipped with digital filtering function, it will continuously average the last 16 measurement values and display the results on the screen after activation.

Technical parameters

power supply

Power supply voltage: 230V AC ± 10%, 115V AC ± 10%, 24V AC ± 10%, or 24V DC ± 15%.

Power consumption: maximum 3.5VA, 5VA with analog output.

Working temperature: -20…+55 ° C (standard), with an extended temperature range available upon request.

Rated voltage: 250V (according to VDE 0110, between input/output/supply voltage), overvoltage category III.

Test voltage: 4kV between input/output/supply voltage.

Electromagnetic compatibility: Complies with EN55022, EN60555, IEC1000-3/4/5/11/13 standards.

input

Current input: 0/4… 20mA, Ri=10 Ω.

Voltage input: 0… 10V, Ri>100k Ω.

Accuracy:<0.1% ± 2 digits.

Temperature coefficient: 0.004%/K.

Transmitter power supply: U ₀ about 24V, Ri about 150 Ω, maximum 50mA (25mA with relay and analog output).

display

Display screen: red LED, 14.2mm.

Display range: ± 9999 (0), with leading zero suppression.

Parameter display: 2 red LEDs, 7mm (parameter and output indicator).

output

Relay: SPDT, 250V AC<250VA<2A, 300V DC<50W<2A.

Analog output: 0/4… 20mA (load ≤ 500 Ω), 0/2… 10V (load>500 Ω), not isolated from input, automatically switches output types according to load.

Accuracy: 0.1%; Temperature coefficient 0.01%/K.

other

Shell: Made of polyamide material, containing glass fiber PA6-GF15/15, keyboard made of polyester material.

Weight: Maximum 450g.

Electrical connection: Clamp terminal, 2mm ² single stranded wire, 1mm ² flexible wire, AWG14。

Protection: IP65 (enclosure), IP20 (terminals), compliant with German BGV A2 anti touch standard.

Operation and Configuration

Operation level: The device operation is divided into 2 levels. After the power is turned on, the device initializes and displays “Int”. After initialization, it enters the working level and can pre select the alarm output set point (if any). Press and hold the parameter button for more than 2 seconds to enter the configuration level of the program, where all parameters defining device functions can be programmed. If the configuration is completed or no button is pressed for more than 2 minutes, the program will return to the working level. Long press the parameter button for 2 seconds to exit the configuration level at any time.

error code

If the input signal exceeds the programmed measurement range by more than 3%, the A/D converter will be overloaded and the display screen will flash at a frequency of about 1Hz.

Error 1 “indicates an EEPROM test error. Pressing the parameter button will reload the EEPROM copy, and the device will operate according to factory settings. If the copy is invalid, the device needs to be sent to the factory for repair.

Loc “indicates program lock, refer to configuration page 7.

Parameter settings: The work level can display actual values, alarm output indicators, adjust display brightness, display maximum/minimum readings, set alarm output setpoints, etc; The configuration level can set parameters such as digital filtering, indication correction, input signal, fixed zero point, decimal point position, starting and ending values of indication range, alarm output set point, hysteresis, analog output, factory setting code, program lock, etc.

Order Code

The ordering code consists of multiple parts, representing input, alarm output, analog output, supply voltage, options, units, and additional text:

Input: 1 represents input standard signal 0/4… 20mA, 0… 10V DC, built-in transmitter power supply 24V DC maximum 50mA.

Alarm output: 00 indicates not installed, 2R indicates 2 alarm outputs (relays).

Analog output: 00 indicates not installed, AO indicates analog output 0/4. 20mA, 0/2… 10V DC (not isolated).

Supply voltage: 0 represents 230V 50/60Hz ± 10%, 1 represents 115V 50/60Hz ± 10%, 4 represents 24V 50/60Hz ± 10%, and 5 represents 24VDC ± 15%.

Options: 00 indicates no options, 01 indicates minimum and maximum value retention function, 07 indicates programmable display brightness, 08 indicates freely programmable analog output, 09 indicates 1 M20x1.5 multi-purpose (2x6mm), 1 M20x1.5.

Unit: appears in the unit field.

Additional Text: will be placed in the additional text field, with a maximum size of 3mm x 70mm (height x width).

Basic Overview

CON021 is a vortex signal converter designed specifically for critical turbomachinery applications such as steam turbines, gas turbines, water turbines, compressors, pumps, and fans, used to measure radial and axial shaft displacement, position, eccentricity, and velocity/key phase.

Main performance parameters

dynamics

Frequency range (-3 dB): 0 to 20000 Hz.

Rise time:<15 µ s.

Applicable sensors: PR6422, PR6423, PR6424, PR6425, PR6426, PR 6453; PR6425 requires the use of an extended range converter, which can be CON021/91x xxx.

environmental parameters

Working temperature range: -30 to 100 ° C (-22 to 212 ° F).

Shock and vibration: 5g @ 60 Hz at 25 ° C (77 ° F).

Protection level: IP20.

Power supply and electrical parameters

Power supply voltage range: -23V to -32V when the output range is -4V to -20V; -21V to -32V when the output range is -2V to -18V.

physical parameters

Shell material: LMgSi 0.5 F22.

Weight: Approximately 120 grams (4.24 ounces).

Installation method: 4 M5x20 screws (included upon delivery).

Connection: The sensor adopts a self-locking Lemo plug; The power/output adopts screw terminal type (maximum 1.5mm ² wire).

Compliance and Certification

Compliant with CE 2014/30/EU, 2014/34/EU, 2011/65/EU, EN61326-1, DIN EN 50581 and other standards.

ATEX certification: EN 60079-0:2009, EN 60079-11:2012.

IEC Ex certification: IEC 60079-11:2011 (version 6.0), IEC 60079-0:2007-10 (version 5), IEC 60079-26:2006 (version 2).

CSA certification: CAN/CSA-C22.2 NO. 0-M91, CAN/CSA-C22.2 NO. 157-92 and other standards.

ANSI/UL standards: 913-2004, 1604-1995 UL 60079-15 2002、UL 61010-1。

Hazardous Area Certification

Inherent Safety (iA)

ATEX II 2 G Ex ia IIC T4 Gb, -20 ° C ≤ Ta ≤ 80 ° C (requires current limiting devices such as safety barriers).

IEC Ex ia IIC T4 Gb, -20 ° C ≤ Ta ≤ 80 ° C (requires current limiting devices such as safety barriers).

CSA Class I Zone 1, Groups A, B, C, D, T4, T4: -25 ° C ≤ Ta ≤ 80 ° C (requires current limiting devices such as safety barriers).

No spark (nA)

CSA Class I Zone 2, Groups A, B, C, and D.

Ex nA II T3.. T4 AEx nA II T3.. T4, T4: -25 ° C ≤ Ta ≤ 80 ° C.

Order Information

Different models correspond to different sensor types, measurement ranges, and linear errors, as follows:

Model Sensor Type Measurement Range Linear Error

CON021 PR6422, PR6423, PR6424, PR6426 1.0mm (standard range), 2.0mm (standard range), 4.0mm (standard range), 8.0mm (standard range) ≤ 1.5%, ≤ 1.0%, ≤ 1.5%, ≤ 1.5%

CON021/912-015 PR6422 1.5mm (extended range) ≤ 2.0%

CON021/913-030 PR6423 3.0mm (extended range) ≤ 1.5%

CON021/913-040 PR6423 4.0mm (extended range) ≤ 2.0%

CON021/914-060 PR6424 6.0mm (extended range) ≤ 1.0%

CON021/914-080 PR6424 8.0mm (extended range) ≤ 1.5%

CON021/914-100 PR6424 10.0mm (extended range) ≤ 2.0%

CON021/915-040 PR6425 4.0mm (standard range) ≤ 1.5%

CON021/915-060 PR6425 6.0mm (extended range) ≤ 2.0%

CON021/915-080 PR6425 8.0mm (extended range) ≤ 3.0%

CON021/915-100 PR6425 10.0mm (extended range) ≤ 4.0%

CON021/916-120 PR6426 12.0mm (extended range) ≤ 1.5%

CON021/916-160 PR6426 16.0mm (extended range) ≤ 2.0%

CON021/916-200 PR6426 20.0mm (extended range) ≤ 2.5%

CON021/916-240 PR6426 24.0mm (extended range) ≤ 3.5%

System Overview

The AMS 6500 Classic system is a system developed by Emerson for the protection and condition monitoring of rotating machinery. It includes multiple protection cards and can achieve comprehensive monitoring and protection of key rotating machinery such as steam turbines, gas turbines, compressors, and water turbines. It complies with international standards such as API 670 and is PlantWeb ®  A part of the digital factory architecture that can be integrated with Ovation ®  And DeltaV ™  Process control system integration provides machinery health status information and diagnostic tools for operators and maintenance personnel.

Introduction to Main Protection Cards

A6740/A6740-10 16 channel output relay module

Purpose: To build a complete API 670 mechanical protection monitor in conjunction with AMS 6500, which can take clear, alarm, or danger signals from any channel as input and output them from output relays through Boolean logic and time delay.

Features: 3U size, 2-slot plug-in module, compliant with API 670 standard, hot swappable; A6740 is 12TE wide and suitable for IMR6000 series racks, while A6740-10 is 10TE wide and suitable for IMR6500 series racks; It has 60 inputs, 30 logical expressions, and 16 relay outputs.

Technical parameters: The relay is a redundant and configurable mechanical relay, with a control voltage of 13-32 VDC and a contact load of 48V, 1A. It can be selected as normally open/normally closed, normally powered on/off, and single pole double throw (SPDT); Logic supports multiple types and can define up to 30 logical expressions; Time delay of 0-30 seconds.

Environment and dimensions: working temperature of 0 ° -65 ° C, storage and transportation temperature of -40 ° -70 ° C, relative humidity of 5-95% (non condensing); A6740 is 60mm wide (12TE), A6740-10 is 54.46mm wide (10TE), 128.4mm high, and 160mm long.

A6125 shell piezoelectric vibration monitor

Purpose: Used to monitor the vibration of the casing from acceleration sensors, drive alarms and relays by comparing vibration parameters with alarm settings, and protect machinery.

Features: Dual channel, 3U size, 1-slot plug-in module, compliant with API 670 standard, hot swappable; Support remote selection of limit multiples and trip bypasses; There is buffering and proportional output before and after.

Technical parameters: Two independent differential inputs, input type is piezoelectric (accelerometer or speedometer), input resistance>100 k Ω, input voltage range -5 to+15 VDC; The frequency range varies depending on the type and configuration of the sensor; The sensor is powered by a constant current of 2-8mA and 30 VDC.

Environment and dimensions: working temperature 0 ° -65 ° C, storage temperature -30 ° -85 ° C, relative humidity 5-95% (non condensing); Width 30.0mm (6TE), height 128.4mm, length 160.0mm.

A6120 Shell Seismic Vibration Monitor

Purpose: Used in conjunction with electric seismic sensors to monitor the seismic vibration of the casing, and achieve mechanical protection by comparing vibration parameters with alarm settings.

Features: Dual channel, 3U size, 1-slot plug-in module, compliant with API 670 standard, hot swappable; Support remote selection of limit multiples and trip bypasses; There is buffering and proportional output before and after.

Technical parameters: Two independent channels, input type is electric (electromechanical), input resistance>100 k Ω, input voltage range -5-+15 VDC; Adjustable frequency range; Increase coil current by 0-8mA, configurable, with an accuracy of ± 0.5%.

Environment and size: Same as A6125.

A6824/A6824-R ModBus and Rack Interface Module

Purpose: Read the parameters of all AMS 6500 modules, output through ModBus TCP/IP and/or ModBus RTU (serial), and build a complete API 670 mechanical protection monitor.

Features: 3U size, 1-slot plug-in module, compliant with API 670 standard, hot swappable; Password protected user configuration; A6824 is 6TE wide with no redundancy options, while A6824-R is 4TE wide with optional redundancy.

Technical parameters: ModBus RTU (serial) baud rate 19.2 kbaud, data bit 8, parity bit, stop bit 1; ModBus Ethernet has RJ45 sockets and 10BaseT; Default IP address 192.168.255.1, subnet mask 255.255.255.0.

Environment and dimensions: working temperature 0 ° -65 ° C, storage temperature -30 ° -85 ° C, relative humidity 5-95% (non condensing); A6824 is 30mm wide (6TE), A6824-R is 25mm wide (4TE), 128.4mm high, and 160mm long.

Other protection cards

A6620 Process Input Monitor: Four channel, monitoring process inputs such as temperature, pressure, load, etc. The input type is voltage or current, with alarm output and multiple output modes.

A6140 Shaft Absolute Vibration Monitor: Dual channel, combined with relative displacement sensor and chassis mounted vibration sensor, monitors shaft absolute vibration.

A6220 axis eccentricity monitor: dual channel, monitoring axis eccentricity through displacement sensors, suitable for large sliding bearing machinery.

A6110 axis relative vibration monitor: dual channel, monitoring axis relative vibration, suitable for sliding bearing machinery.

A6312/A6312-8 Speed and Keyphase Monitor: Dual channel, monitoring speed, phase, zero speed, and rotation direction, configurable as redundant mode.

A6630 Temperature Monitor: Multi channel, input RTD and thermocouple temperature sensors, providing temperature protection.

A6210 Thrust Position, Differential Expansion, and Rod Position Monitor: Dual channel, capable of operating in thrust position, differential expansion, or rod position modes.

A6410 Valve and Shell Expansion Monitor: Dual channel, monitoring valve position and shell expansion.

General characteristics

Most modules comply with the API 670 standard, support hot plugging, and are easy to maintain.

Equipped with self inspection function, it can monitor hardware, power input, hardware temperature, sensors, cables, etc.

Provide multiple output modes, such as 0/4-20 mA current output, 0-10 V voltage output, etc., and the output has open/short circuit protection.

Support password protection configuration to ensure system security.

Order Information

Each protection card has a corresponding model and product description, such as A6740 which is a 12TE wide 16 channel output relay module suitable for IMR 6000/10 and other racks; A6125 is a dual channel housing piezoelectric vibration monitor, etc., which can be ordered according to specific needs.

The above summary covers the purpose, characteristics, technical parameters, environment and size, and ordering information of the AMS 6500 Classic system’s main protection cards, which helps to comprehensively understand the protection card functions of the system.

​Basic characteristics and applications

PR 9376 is an RPM sensor used for non-contact measurement of the rotational frequency of ferromagnetic mechanical components, with the following features:

The structure is sturdy, with a frequency range of 20kHz and a mechanical resolution (modulus 1) of 1.5mm. The output pulse voltage is high, and the pulse rise/fall time is only 1 µ s. The output has short-circuit protection function, and the working temperature range is -30…+100 ° C.

Widely applicable in industrial and laboratory scenarios, it can be used in conjunction with electronic evaluation equipment such as epro RMS 700 or MMS 6000 speed monitoring systems to complete measurement, monitoring, monitoring or control tasks such as rotation direction detection, slip, gear ratio, backlash, etc. It can also be used to issue proximity signals, alarms, switch control, count mechanical events, etc. Due to its high resolution, fast response internal electronic components, and sharp output pulse edges, it can measure extremely high and low speeds with high precision.

Working principle and structure

Working principle: The sensor head is a differential sensor composed of two series connected magnetic sensitive semiconductor resistors, installed above a small permanent magnet. The two resistors in the electronic part of the sensor form a Wheatstone bridge, which controls the subsequent DC switching amplifier with fast push-pull short-circuit protection output. When the trigger mark made of soft iron or steel approaches the sensor vertically, it interferes with the internal magnetic field, causing the bridge to become unbalanced and the output voltage to switch to a high level; When the trigger marker passes by, the bridge becomes unbalanced in reverse and the output signal returns to a low level. The output pulse has sharp edges and can be capacitively coupled with subsequent electronic devices even at the lowest triggering frequency.

Construction: High quality electronic circuits are packaged in a sturdy stainless steel casing, and the connecting cables are insulated with polytetrafluoroethylene. If necessary, flexible metal tubes can be added for protection.

Technical parameters

Measurement related

Measurement principle: Differential magnetic field sensor.

Trigger method: Non contact triggering through mechanical triggering of markers, with the trigger marker material being soft iron or steel.

Trigger frequency range: 20kHz.

Allowable gap: For St 37 material, it is 1.5mm.

Trigger marking size limit: standard module 1 gear (involute profile, St 37 material); Special trigger wheels need to refer to the chart.

output parameters

Output type: Short circuit protection push-pull output stage, load can be connected to measurement zero or power supply.

Output pulse voltage: Under a load of 100 (2.2) K and a 12V power supply, the high level is 10 (7) V and the low level is 1 (1) V.

Pulse rise and fall time:<1 μ s (no load and within all frequency ranges).

Dynamic output resistance:<1K.

Allowable load: resistive load 400 Ω, capacitive load 30nF.

Power parameters

Power supply voltage: 8… 31.2V DC, can withstand up to 1 second without damage at 34V.

Allow ripple: 10% of the power supply voltage.

Current consumption: 25mA at 25 ° C, 24V power supply, and no load.

Mechanical and environmental parameters

Mechanical structure: stainless steel shell, encapsulated electronic circuit, sensor head material made of synthetic resin (reinforced with closed brass tube), cable insulated with polytetrafluoroethylene (optional flexible metal tube protection).

Dimensions: Diameter 14mm, sensor length 124mm, cable length 3m.

Weight: PR9376/00 with/without packaging is 330g/210g; PR 9376/20 with/without packaging is 530g/410g (both including installation kit).

Environmental conditions: reference temperature 25 ° C; operating temperature -30…+100 ° C; maximum withstand temperature (within 30 seconds, without damage) 120 ° C; storage temperature -40…+100 ° C; protection level IP 66 (compliant with DIN 40050 standard).

Other information

Reference measurement precautions: If used for reference measurement (with only one mark or collar on the shaft), relevant instructions must be followed to ensure normal operation in harsh industrial environments, a flat sensor surface, and oil and water resistant installation through standard cable sealing sleeves.

Order number: PR 9376/00 (without metal cable protection) is 9408-093 76001; PR 9376/20 (with metal cable protection) is 9408-093 76201.

Sensor Overview

The PR 9350/.. Series linear displacement sensor is an inductive sensor mainly used to measure static and dynamic displacement, and can also be combined with carrier frequency measurement bridge to measure physical quantities that can be converted into linear motion (such as tension, pressure, material thickness, etc.). It has the characteristics of high resolution across the entire range, small hysteresis, sturdy structure, low control target force, wide measurement range (± 12 to ± 150 mm), high accuracy, and sealed packaging.

Working principle

The differential coil of the sensor consists of a coil holder with two windings and a solenoid plunger with a ferromagnetic core that moves within the coil. When the tracing needle is precisely located in the middle of the coil, the impedance of the two windings is the same; When the probe with a ferromagnetic core moves from the middle position towards one end of the sensor, the impedance of one winding will increase, while the impedance of the other winding will decrease. By using resistors to supplement the winding into a Wheatstone bridge and providing a carrier frequency to the bridge, the measured output of the bridge will obtain a voltage proportional to the displacement of the stylus. The tracing needle can move freely and comes with an M3 threaded rod for mechanical adaptation to the measurement target. There is a 3-pole Cannon socket on the top of the housing for electrical connection.

Technical parameters

Sensitivity: Within the rated measurement range, the bridge output for every 1V supply voltage is 270 mV/V.

Supply voltage: 5 Vrms.

Linear error: 2% of the total range (relative to the ± range limit of the sensor).

Carrier frequency: 3-5 kHz.

Allowable ambient temperature: -20… 0…+120 ° C.

The effect of temperature on sensitivity: 0.1%/K.

Nominal inductance: 20+20 mH when the solenoid plunger is in the middle position; 7+26 mH at maximum displacement; 13+26 mH at 50% displacement; 5+5 mH when withdrawn.

Capacitor: 250 pF per winding.

Standard attachments: Cannon MS-3106E10SL-3S connector, solenoid plunger with M3 threaded rod.

Parameters of each model

Model nominal measurement range (mm) approximate weight (g) size (mm) order code

PR 9350/01: -12… 0…+12 170 4 holes 76.6 39.2 60.3 85.1 16.0 9408 093 50011

PR 9350/02：-25…0…+25 255 – 108.0 127.0 65.4 76.2 123.2 19.0 9408 093 50021

PR 9350/04：-50…0…+50 370 – 197.0 229.0 112.0 150.0 144.1 25.4 9408 093 50041

PR 9350/06：-75…0…+75 510 – 311.0 330.0 169.5 200.0 238.1 25.4 9408 093 50061

PR 9350/08：-100…0…+100 660 – 413.0 432.0 218.8 247.7 292.1 25.4 9408 093 50081

PR 9350/12：-150…0…+150 860 – 616.0 635.0 319.9 342.9 311.2 25.4 9408 093 50121

PR 9376 series eddy current sensor system

System Overview: The PR 9376 series is a non-contact vibration and displacement measurement system based on the principle of eddy current. It consists of sensors, extension cables, and preamplifiers, and is used to monitor parameters such as shaft vibration, shaft displacement, key phase, and speed of rotating machinery. It is suitable for large rotating equipment such as steam turbines, generators, and compressors.

Core Features

By using the eddy current effect, non-contact measurement can be achieved, which is not affected by the medium and has high measurement accuracy.

The working temperature range is wide, and the sensor can operate in an environment of -30 ° C to+150 ° C. The working temperature of the preamplifier is -5 ° C to+65 ° C.

Having good linearity and stability, the linear error is usually less than 1%, and the long-term stability error is less than 0.1% per year.

Supporting multiple installation methods, radial or axial installation can be selected according to on-site requirements.

Technical parameters: The measurement range usually includes various specifications such as 0-2mm and 0-5mm; The sensitivity is generally 8mV/μ m or 4mV/μ m; The frequency response range is wide, covering 0-10kHz, meeting the measurement needs of different devices.

MMS 6000 monitoring module

Module function: The MMS 6000 monitoring module is the core component of the rotating machinery status monitoring system, which can be used in conjunction with PR 9376 series sensors to achieve real-time collection, processing, and analysis of equipment vibration, displacement, temperature, and other parameters.

Main Features

Capable of multi-channel input, capable of monitoring parameters from multiple measurement points simultaneously.

Built in multiple signal processing algorithms, capable of filtering, amplifying, integrating, differentiating, and extracting effective feature parameters from raw signals.

Support alarm function, can emit sound and light alarm signals according to preset thresholds, timely reminding operators of equipment abnormalities.

Equipped with data storage and communication functions, monitoring data can be stored locally or uploaded to the upper computer system for easy historical data query and trend analysis.

System application and precautions

Application scenario: Widely used for monitoring the status of large rotating machinery in industries such as power, petrochemicals, and metallurgy, helping users detect potential equipment failures in advance, reducing downtime, and improving equipment reliability.

Precautions

When installing sensors, it is necessary to ensure that the distance between the sensor and the object being measured is within the effective measurement range, in order to avoid affecting the measurement accuracy due to the distance being too close or too far.

The length and model of the extension cable should be selected according to the requirements of the sensor and preamplifier to ensure stable signal transmission.

Regular calibration and maintenance are required during system operation to ensure the accuracy and reliability of measurement data.

Sensor Overview

The PR 9266/.. And PR 9268/.. Series electric absolute vibration sensors are designed specifically for measuring the absolute vibration of machines and are part of the MMS 6000 and MMS 3000 rotating machinery monitoring systems. Its working temperature range can reach 200 ° C, using seismic function principle, easy installation, high sensitivity, sturdy structure suitable for industrial applications, with splash proof characteristics, protection level of IP 55 or IP 65, with two frequency ranges of 10 Hz to 1000 Hz and 4 Hz to 1000 Hz. When used in conjunction with safety barriers (Zone 1), the safety level is EEx ib II B/II C.

Application scenarios

The absolute vibration can be measured in frequency ranges of 10… 1000Hz and 4… 1000Hz, with vibration amplitudes of up to 2mm and 3mm (peak to peak), respectively. It can provide an electrical signal proportional to the vibration velocity. Suitable for various types of turbomachinery, fans, compressors, gearboxes, pumps, coal mills, and other machines. Among them, PR 9268/60 and PR 9268/70 are particularly suitable for high-temperature environments, such as gas turbine applications, and also include electrical adaptation, which can replace the original AEG Kanis Group’s MMG 033 and MMG 1033 absolute vibration sensors, and provide three different sensor sensitivities according to the type of measurement amplifier.

Functional Principles and Design

Measurement element: composed of seismic mass blocks with coils, suspended on diaphragm springs, moving in the circular gap of permanent magnets, and guided by diaphragm springs in the longitudinal direction (measurement direction) of the measurement element.

Working mode: The sensor operates above the resonance frequency (different models have resonance frequencies between 4 and 13 Hz), while the seismic mass remains stationary. Due to the vibration of the sensor housing, an electrical signal proportional to the vibration velocity is generated.

Damping: The damping of the measuring element is achieved through a damping cylinder or external device, with a damping value of about 0.6 and good linear characteristics throughout the entire frequency range.

Special design: Measurements below the resonance frequency can be corrected by corresponding amplitude response; When the vibration amplitude is too high, the mechanical limiter will reduce the maximum amplitude of the seismic system; Each sensor is designed for a measurement direction (vertical or horizontal). The PR 9266/.. Series sensor has an additional lifting coil, which adjusts the center position of the seismic element by inputting a lifting current of up to 7mA into the coil; The PR 9268/.. Series sensors can directly input the boost current into the measurement coil, but this current must be separated from the measurement signal. The measurement amplifier of MMS 6000 supports the operation of absolute bearing vibration sensors and provides boost current.

Technical parameters

Parameter PR 9266/.. Series: PR 9268/20 and/30 PR 9268/60 and/70

Measurement principle: Low tuning system for absolute vibration measurement

Electromechanical Conversion: Electric Power, Electric Power, Electric Power

Operation direction: vertical (with lifting current), horizontal (without lifting current) PR 9268/20: ± 10 °; PR 9268/30: ± 10 ° PR 9268/60: ± 60 ° (specified data deviation ≤ 15%); PR 9268/70: ± 30 ° (specified data deviation ≤ 15%)

Frequency range:… 1000 Hz 4… 1000 Hz 10… 1000 Hz

Vibration amplitude (peak to peak) and limiter position: 2000 µ m, limiter at ± 1500 µ m 3000 µ m, limiter at ± 2000 µ m 3000 µ m, limiter at ± 2000 µ m

Natural frequency (20 ° C): Horizontal direction: 12.0 Hz ± 2 Hz; Vertical direction (lift coil activated): 12.3 Hz ± 2 Hz; Vertical direction (lift coil not activated): 14.5 Hz ± 1.5 Hz Horizontal direction: 4.5 Hz ± 0.5 Hz; Vertical direction: 4.5 Hz ± 0.5 Hz When undamped: 10 Hz ± 1 Hz; Horizontal direction: 8 Hz ± 1 Hz; Vertical direction: 8 Hz ± 1 Hz

Sensitivity and conditions: 30 mV/mm ⁻¹ at 50 Hz, 20 ° C, and 100 kOhm load; 28.5 mV/mm ⁻¹ at 50 Hz, 20 ° C, and 100 kOhm load; 22 mV/mm ⁻¹ at PIN 3 and 100 kOhm load; 16.7 mV/mm ⁻¹ at PIN 1 and 50 kOhm load; 16.7 mV/mm ⁻¹ at PIN 4 and 20 kOhm load

Tolerance: ± 3%<± 5.25% ± 5%

Linear error:<2%<2%<2%

Lateral sensitivity:<0.03 (at 50 Hz) PR 9268/20:<0.27; PR 9268/30:<0.13 (at 110 Hz)<0.1 (at 80 Hz)

Damping coefficient (20 ° C/100 ° C): approximately 0.6/approximately 0.43, approximately 0.56/approximately 0.42, measured at PIN 3, approximately 0.7/approximately 0.5 (at 200 ° C)

Effective capacitance (including cable):<2.5 nF<1.2 nF<2.0 nF

Measurement of coil electrical data (DC resistance/inductance): 1800 Ohm ± 12% (including calibration coil); Measurement coil ≤ 62 mH, lifting coil ≤ 75 mH 1875 Ohm ± 2% (including internal resistance); ≤68 mH PIN 3：2760 Ohm±10%； PIN 1：3260 Ohm±10%； PIN 4：3180 Ohm±10%； ≤200 mH

Allowable acceleration (measurement direction/lateral): 10 g continuous, 20 g short-term/5 g 10 g continuous, 20 g short-term/2 g 10 g continuous, 20 g short-term/2 g

Temperature range (sensor without connector, continuous/short time (<4h)/storage and transportation): -20…+150 ° C/-20…+170 ° C/-40…+70 ° C -20…+100 ° C/-20…+120 ° C/-40…+70 ° C -20…+200 ° C/-20…+220 ° C/-40…+70 ° C

Protection level/relative humidity (non condensing): IP 65/0… 100% IP 55/0… 100% IP 65/0… 100%

Materials (shell/metal protective hose/Hart connector): Al Mg Si Pb F 28/stainless steel/die cast aluminum Al Mg Si Pb F 28/stainless steel/die cast aluminum stainless steel 1.4104/stainless steel/die cast aluminum

Weight (with cables and connectors, unpackaged/including packaging): PR 9266/10:600g/1100g; PR 9266/11：1300g/1900g； PR 9266/12：1900g/2500g 930g/1200g 1050g/1600g

Connecting cable: 3 x 0.62 mm ², PTFE, 3 x 0.62 mm ², PTFE 3 x 0.5 mm ², PTFE

Ordering Instructions

The order model format is PR 926X/X-XX0, and the meanings of each part are as follows:

The PR 9266 series corresponds to the number “6”, and the PR 9268 series corresponds to the number “8”.

Base type: 0 for no base, 1 for triangular base, 2 for cubic base.

Measurement direction: PR 9268/20 is vertical, PR 9268/30 is horizontal, PR 9268/60 is vertical (high temperature 200 ° C), PR 9268/70 is horizontal (high temperature 200 ° C).

Cable length: 0 is 3m, 1 is 5m, 2 is 8m, and 3 is 10m.

Cable end (only PR 9268/60 and/70 with Hart connector): 0 is Hart connector, 1 is open cable end.

Flexible metal protective tube: 0 with strap, 1 without strap.