Overview
Configured for dual-channel bearing vibration measurement in the EPRO MMS 3000 platform, the Emerson EPRO MMS3120/022-000 (MMS3120 Vibration Transmitter) processes absolute bearing vibration signals from seismic or electrodynamic velocity sensors. It provides independent current outputs and buffered dynamic signal outputs for monitoring and diagnostic circuits.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | MMS3120/022-000 |
| Brand | EPRO / Emerson |
| Series | MMS 3000 |
| Product Type | Dual-channel bearing vibration transmitter |
| Origin | Germany |
| Weight | 1.6 kg |
| Dimensions | 21.5 x 14.2 x 9 cm estimated shipping size |
| Number of Channels | 2 independent measurement channels |
| Sensor Type | Seismic / electrodynamic velocity sensors |
| Sensor Example | PR 9268 series |
| Current Outputs | 2 independent 0/4-20 mA outputs |
| Maximum Output Load | 500 Ohm |
| Buffered Signal Outputs | Unfiltered dynamic voltage outputs, +/- 5.0 V |
| Power Supply | Dual redundant +24 VDC inputs |
| Supply Voltage Range | +18 to +31.2 VDC |
| Power Consumption | Maximum 6 W |
| Operating Temp | -20 deg C to +65 deg C |
| Storage Temp | -30 deg C to +85 deg C |
| Relative Humidity | 5 to 95%, non-condensing |
| Module Format | Euro-card PCB format |
| Configuration | Dedicated MMS configuration software |
Emerson EPRO Vibration Signal Processing
The MMS3120/022-000 receives vibration signals from compatible seismic or electrodynamic velocity sensors. Each channel processes its assigned input independently. The module then provides corresponding 0/4-20 mA current outputs for external monitoring circuits.
In addition, the module provides buffered, unfiltered dynamic voltage outputs. These outputs allow external equipment to access the raw vibration signal for diagnostic analysis. Therefore, the measurement path can support both continuous process monitoring and separate signal evaluation.
The module also performs internal monitoring of the sensor and transmitter circuits. When the monitoring circuit detects an input or internal fault, the affected current output can switch to 0 mA and indicate the corresponding status condition.
The two +24 VDC supply inputs provide a redundant power arrangement. This configuration separates the supply paths so the module can receive power from two DC sources.
Frequently Asked Questions
Q: How many vibration measurement channels does the MMS3120/022-000 provide?
A: The module provides two independent electrical measurement channels.
Q: What current output does the module provide?
A: It provides two independent 0/4-20 mA current outputs, with a maximum load of 500 Ohm.
Q: What type of sensor does the MMS3120/022-000 accept?
A: The module accepts compatible seismic or electrodynamic velocity sensors, including sensors from the PR 9268 series.
Field Installation Guidelines
Install the module in the specified MMS system rack or compatible Euro-card mounting arrangement. Verify the mechanical position before connecting field wiring.
Connect the two redundant +24 VDC supply inputs according to the system wiring design. Check supply polarity and voltage before energizing the module.
Connect each vibration sensor to its assigned measurement channel. Keep sensor signal wiring separated from high-current power wiring and switching circuits to reduce electrical interference.
Route the 0/4-20 mA output wiring to the designated monitoring or control input. Confirm the receiving circuit can accommodate the specified maximum 500 Ohm output load.
Use the buffered voltage outputs only with compatible external diagnostic equipment. Maintain appropriate shielding and grounding practices for low-level vibration signal wiring.
Before commissioning, verify sensor connections, supply voltage, current-loop wiring, channel assignments, and diagnostic status. Then confirm that each channel produces the expected measurement response.
Reviews
There are no reviews yet.