The CMCP590 Transmitter is a 4-20mA enveloped acceleration transmitter. Used with a 100mV/g accelerometer, it processes the dynamic vibration acceleration input signal defects in over-rolling bearing defects or gearbox problems.
- Accelerometer Input
- Enveloping Output (gE)
- 3 Ranges and 3 Bandwidths
- 4-20mA Output
- Two Buffered Outputs
- Class 1 Division 2, Groups B-D
- CE Approved
For early bearing fault detection, trending the overall vibration energy of the demodulated signal in gE is good practice.
Trending overall demodulated readings has proven very effective for bearing fault detection and for determining severity. Since the demodulated measurement focuses on and enhances only vibration energy in the bearing’s fault frequency range, trending the overall energy within the enveloped frequency band provides a good indication of incipient bearing failureGeneral guidelines for setting enveloped acceleration measurement alarms for bearing monitoring were established:
These general guidelines can be used to determine the initial alarm settings, if no previous measurement data is available.
Alarms relays and trip multiply are available with the Monitor version.Alarms - The CMCP500A Series Monitors have two independent set points, LED alarm indicators and output relay contacts (Alert and Danger). Set points are adjustable via potentiometer, from 0 to 110% of full scale. Each has an adjustable delay of 1 to 10 seconds. SPST Relay contacts are rated 5 Amps @ 30 Vdc or 250 Vac for resistive loads. Relay contacts can be independently configured by the user for either Normally Open (NO) (Standard) or Normally Closed (NC) operation. Relays are normally de-energized and can be configured for latching or non-latching (standard) operation. Latched alarms may be reset locally or by remote contact closure. Trip Multiply - The monitors have set point multiplication of 3X, via contact closure (2X available), to avoid tripping the alarms during machine start-up.