MSSC GDMS-OMD14, User Manual

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GDMS-OMD14
®
User Manual
Release 160623
(revision 160704)
MSS
AG
Page 3.1
3.1. Pre-Commissioning Checks
3. Commissioning
Check for the following:
• correct wiring as given in Chapter 2.3.
• correct power supply on GDMS-OMD14 Evaluator
• GDMS-OMD14 Evaluator display is on
• For more detailed information, please have a look at the Installation Manual!
3.2. Data Sampling
As soon as a GDMS-OMD14 Evaluator is powered up, it starts the initial self check
procedure and shows the READY Status if all pre-set conditions are fulfilled. This
self check procedure is carried out in a certain cycle.
Regardless of the green ready LED status of the GDMS-OMD14 Evaluator, if
working GDMS-OMD14 sensors are connected, the GDMS-OMD14 Evaluator
samples the signals from the GDMS-OMD14 sensors with a certain sampling rate,
converts them into digital signals, analyzes, evaluates and displays them on its
LCD display.
These data including the detected events are continuously made available through
the RS485 interface. A connected Remote Monitoring Unit and/or PC can use the
output for remote monitoring and further processing.
It is also possible to set up some OMD14 Evaluator parameters from the PC using
standard serial terminal application (for example “Hyper Terminal”).
3.3. alarm Setting and Triggering
There are 3 alarm relays integrated in the GDMS-OMD14 Evaluator:
• Ready relay: indicates the system status
• 1
st
Alarm relay: always assigned to main alarm, aditionally programmable as
pre-alarm or over speed alarm
• 2
nd
Alarm relay: programmable as main alarm or pre-alarm or both and/or
over-speed alarm
The GDMS-OMD14 has a self check procedure which is carried out in a certain
cycle. If any one of the conditions for the System Ready status is not detected the
GDMS-OMD14 Evaluator switches off the green READY LED and the ready relay
opens. An error code and a text error message are shown on the LCD display of the
Evaluator and also in the event window of OMD Logger on the optional monitoring
PC.
GDMS-OMD14 enables to set different alarm sensitivity levels by defining different
oil mist concentration thresholds as alarm condition. Oil mist concentration alarm
levels are encoded as numbers from 1 to 10 (the higher the number is the less