GE BAKER HUGHES Masoneilan SVi 1000, Quick Start Manual

Page: 37 / 88

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Masoneilan SVi1000 Positioner Quick Start Guide =
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37
Position Retransmit Units
To troubleshoot control loop connections:
1. Connect a DC voltmeter across the input and output 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.
To troubleshoot retransmit connections:
Ensure that the retransmit circuit has a minimum input voltage of 10 V
(maximum 30 V).
Ensure the minimum retransmit current is 3.2 mA. If the SVi1000 positioner
loses power and the retransmit circuit remains powered, the AO signal will
be 3.2 mA.