Emerson MMS 3210/xxx-xxx Dual Channel Shaft Position Transmitter for Eddy Current Sensors

Emerson MMS 3210 Dual Channel Axial Displacement Transmitter

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.

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.