Overview
Configured for dual-channel bearing vibration measurement, the Epro MMS3120/022-100 (MMS3120/022-100 Dual Channel Bearing Vibration Transmitter) processes vibration signals and provides 0/4…20 mA current outputs. The unit accepts redundant 24 V DC supply inputs and supports direct machine mounting.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | MMS3120/022-100 |
| Brand | Epro |
| Product Type | Dual Channel Bearing Vibration Transmitter |
| Origin | Germany |
| Weight | 0.2 kg |
| Dimensions | 3.1 x 19 x 12.9 cm estimated shipping size |
| Storage and Transport Temp | -30 to +90 deg C |
| Power Consumption | Not specified in supplied data |
| Power Supply | 18…24…36.0 V DC |
| Supply Inputs | Two redundant 24 V DC inputs |
| Frequency Range | 5/10…1000 Hz |
| Current Outputs | 0/4…20 mA |
| Linearity Error | 0.25% |
| Output Signal Ripple | < 50 mVpp for measuring peak values |
| Zero Point Stability | < 0.05%/K |
| Relative Humidity | 0 to 95%, non-condensing |
| Mounting | Direct mounting at the machine |
| Tariff Code | 8537101190 |
Mechanical Vibration Signal Processing
The MMS3120/022-100 handles two bearing vibration measurement channels and converts the measured vibration into current output signals. Its specified frequency range extends from 5/10 Hz to 1000 Hz. The transmitter supports 0/4…20 mA outputs for connection to monitoring or control equipment.
The specified linearity error is 0.25%. In addition, the output ripple remains below 50 mVpp when measuring peak values. The zero-point characteristic is specified at less than 0.05%/K.
Frequently Asked Questions
Q: What supply voltage does the MMS3120/022-100 accept?
A: The specified supply range is 18 to 36.0 V DC, with 24 V DC identified as the nominal supply level. The design provides two redundant 24 V DC supply inputs.
Q: What output signal does the transmitter provide?
A: The transmitter provides 0/4…20 mA current outputs for vibration signal transmission to connected monitoring or control equipment.
Q: What vibration frequency range does the unit support?
A: The specified frequency range is 5/10 to 1000 Hz.
Field Installation Guidelines
Mount the transmitter directly at the machine according to the mechanical installation arrangement. Keep vibration signal wiring physically separated from high-current power cables and switching conductors where practical.
Use suitable shielded signal cables for the 0/4…20 mA circuits. Route the signal shield according to the plant grounding scheme and avoid creating unintended ground loops.
Connect the redundant DC supply inputs with correct polarity and verify the supply voltage before energizing the unit. Check the output wiring and terminal assignments against the applicable installation documentation before commissioning.
During commissioning, verify the vibration input channels, current-output response, zero-point behavior, and signal wiring. Also confirm that the installation environment remains within the specified storage and transport humidity and temperature limits where those limits apply.
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