GE BAKER HUGHES Masoneilan SVi 1000, Быстрый старт

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Figure 20 Connections to Electronics Module with Position Retransmit
(via Interface Board)
3. Proceed to “Check Out and Configuration” on page 39. Refer to “Troubleshooting
Connections” on page 36 if you want to check the validity of your connections.
Troubleshooting Connections
Basic Unit/Optional Switches Unit
To troubleshoot control loop connections:
1. Connect a DC voltmeter across the input terminals.
For an input current between 4 and 20 mA the voltage varies between 11V
and 9 V respective.
If voltage exceeds 11 V check that polarity is correct.
If the polarity is correct but the voltage is less than 8.05 V, then the current
source voltage is not compliant.
2. Verify that source can supply 20 mA to SVi1000 input. If 20 mA is not attainable,
troubleshoot the source.
Ground
4- 20 mA Input Signal
(4 - 20 mA Control Loop)
4- 20 mA Output Signal
(Retransmit signal)