Submittal Sheet

SOLID CORE AND SPLIT CORE 4-20 MA OUTPUT CURRENT SENSORS
7 63-2654—1
TROUBLESHOOTING
CURRENT CONVERSION FORMULA
To convert the current sensor output signal to a current
reading.
Current reading = mA output/20 mA x Amp Span.
For example:
For a reading of 4 mA with a 0-250 Amp span:
Current reading = (4 mA/20 mA) x 250 A = 0 Amp.
(0/16) X 250 = 0
NOTE: 4 mA = 0 Amps
20 mA = 250 Amps
Problem Solution
No reading • Confirm that you have +12 to 30 Vdc in series with the current sensor output terminals and the
analog input of the control panel.
• Check the polarity of the circuit.
• Verify that the terminals are screwed down, wires are firmly in place.
• Disconnect the input to the control panel and then insert a current meter (mA range) in series with
the current sensor output to verify that the circuit is working properly.
Erratic readings • Verify that the wires are terminated properly.
• Check that the +12 to 30 Vdc input is clean. In areas of high RF interference, shielded cable may be
necessary to stabilize signal.
Inaccurate readings • If you suspect that the current sensor is not reading within the accuracy specifications, please
contact the factory for assistance.