Endress+Hauser gammapilot FTG 671, Руководство по эксплуатации

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2.4 Transmitter wiring
Warning!
•
Switch off the power supply before making any electrical connections!
•
When wiring up probes and sensors in explosion hazardous areas, observe the in-
structions on the certificate and other appropriate regulations.
Rack wiring Fig. 2.12 is a pin assignment diagram for the Gammapilot FTG 671.
•
Inputs d2 and d4 are for DG 57 detector signals, z2 and z4 are for DG 17/27
counter signals. They are electrically isolated from all transmitter circuits and
each other.
•
The circuit zero of the unit (
⊥
) is connected to the negative terminal of the
supply voltage.
Note!
•
Two indexing pins, at positions 2 and 7 in the rack connector ensure that Gammapi-
lot FTG 671 transmitters only can be inserted at these points. The pins must be inser-
ted if the rack is not custom built by Hauser.
Relay
➀
Alarm
relay
Power supply
Relay
➁
Relay
➀
Relay
➁
BA082D14
Alarm relay
FTG 671
Non-Ex-area
DC supply
Ex-area
Remote dialog
Rackbus
PCM input
PFM input
Inputs
Non-Ex-area
Fig. 2.12:
Pin assignment diagram for
Gammapilot FTG 671
Gammapilot FTG 671 Chapter 2: Installation
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