GHM Messtechnik GmbH – Martens
Kiebitzhörn 18
● 22885 Barsbüttel ● Germany
Phone +49-40-670 73-0
● Fax
-288
www.ghm-messtechnik.de
●
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5.
Commissioning, maintenance and service
5.1.
Commissioning
1. Ensure that the connection assignment takes place according to the
connection diagram and matches the power supply.
2. With connection of equipment for explosion-prone areas, ensure that the
device version has the appropriate approval.
3. With installation of the isolating amplifier in Zone 2, the device must be
installed in a switch cabinet with protection rating IP54.
4. Ensure that the terminals are firmly screwed in.
5. After switching on the power, check for the correct switching function.
Note:
After the supply voltage is applied, a check of the device function takes place
according to the requirements for functional safety.
The device is ready for operation after approximately 3 seconds.
The functional test also includes a load test of the supply voltage. The device
draws as much power as a maximum load for 2 seconds, which means 2 short-
circuited inputs and 2 energised relays. The load is only simulated, which means
the relays do not switch during this phase.
5.2.
Maintenance
Housing:
No cleaning or maintenance is required when operated as intended.
5.3.
Service
Service of the device is only possible at the factory.