GE SVi 1000 Masonelian Quick Start Manual page 38

Figure 20 Connections to Electronics Module with Position Retransmit
3. Proceed to "Check Out and Configuration" on page 41. Refer to "Troubleshooting
Connections" on page 38 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.
2. Verify that source can supply 20 mA to SVi1000 input. If 20 mA is not attainable,
troubleshoot the source.
38 | =GE Oil & Gas
(via Interface Board)
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.
4- 20 mA Output Signal
(Retransmit signal)
4- 20 mA Input Signal
(4 - 20 mA Control Loop)
Ground
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