Product Introduction
MMS6220 is a dual-channel shaft eccentricity measurement module produced by EPRO of Germany. It is mainly used in the industrial field, especially in situations where the axial eccentricity of mechanical equipment or structures needs to be monitored and measured, such as turbines, generators, gearboxes and other rotating machinery.
Technical Specifications
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Manufacture |
EPRO |
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Model |
MMS6220 |
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Part Number |
MMS 6220 |
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Description |
Dual Channel Eccentricity Monitor |
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MoOrigin |
Germany |
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Dimension |
24*17*6cm |
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Weight |
0.23kg |
Product Details
The cards of the MMS 6000 family are suitable to build up systems for increasing performance, efficiency and operational safety of the monitored units such as steam, gas- and water turbines and to extend the machines' life times.
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Sensor inputs: Two independent signal inputs for eddy current measuring chains. The signal inputs are differential inputs, galvanically isolated from the power supply.
0,017...70 Hz (1,02...4200 rpm)
Minimum range: 0...400 mVpeak Maximum range: 0...8000 mVpeak within this range any value freely selectable |
Sensor supply: Each sensor has an own output buffer, galvanically isolated from all system voltages and the power supply of the monitor. Open circuit and short-circuit proof. Parallel connection with other monitors possible without mutual influences.
-26,7 V DC
typ. 20 mA; max. 35 mA |
Control inputs: Common logic inputs for both channels. For choosing operating mode and limit values for „warning" and „danger":
Measuring range multiplier to modify the alarm limits during run-up or rundown.
1,000 to 4,999 24 V Logic
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Key pulse input: One pulse per revolution; input for system control. 24 V logic Input resistance: ≥ 30 kOhm Pulse duration: Min. 10 µs (edge triggering) |
Voltage inputs: Two, one for each channel. 0...10 V Input impedance: ≥100 kOhm Resolution: 10 bit |
Measuring modes:
Each channel must individually be configured via the available interfaces. The configuration may be changed any time during operation (in this case the measuring operation of the monitor will be interrupted for approx. 60 sec, the alarms will be enabled again after another 60 sec).
Measuring modes for the dual channel mode:
- peak – peak measurement
- minimum / maximum measurement
- continuous gap measurement
Programmable measuring parameters:
- Measuring range
- Measuring units
- Sensor sensitivity
- Warning and alarm limits
- Channel identification: Adjustable by means of KKS numbers or freely selectable designations
Applications:
The MMS 6220 dual channel eccentricity monitor processes relative radial shaft vibration signals of eddy current sensors with the following signal evaluations:
- peak – peak
- minimum / maximum
These measurements serve the construction of turbine protection systems. They provide signals for analysis and diagnosis systems to be further processed in field bus systems host computers and networks.
The cards of the MMS 6000 family are suitable to build up systems for increasing performance, efficiency and operational safety of the monitored units such as steam, gas- and water turbines and to extend the machines' life times.
By means of a laptop computer connected to the RS 232 interface, parameters and operation modes of the monitor may be configured. Moreover, the measured characteristical values, the order analysis as well as data of the last run-up or run-down can be visualized.
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