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NOTE: When using a shielded cable, be sure to con-
nect only (1) end of the shield to ground at the
controller. Connecting both ends of the shield
to ground may cause a ground loop.
When removing the shield from the sensor end, make
sure to properly trim the shield to prevent any chance
of shorting. The current sensor terminals are polarity
Wiring Example
TROUBLESHOOTING
Problem
No reading
Erratic readings
Inaccurate readings
Current Sensor is operating at a
low-level current or failing to
operate within the accuracy
specifications.
Current Conversion Formulas
To convert the current sensor output signal to a current reading.
4-20mA output to Current reading (4mA = 0 Amps and 20mA)
Example: 12mA current sensor output signal
Total Span = 250 Amps
Multiplier = 20mA-4mA/Total Span = 0.064
(12mA-4mA)/0.064= 125 Amps
WEEE Directive
At the end of their useful life the packaging and product should be disposed of via a suitable recycling center. Do
not dispose of with household waste. Do not burn.
SOLID AND SPLIT CORE 0-5/10VDC OUTPUT CURRENT SENSORS
Fig. 3. Analog Circuit.
• Verify that there is current flowing through the conductor being monitored
with a clamp-on current probe. The power for the current sensor is induced
from the conductor being monitored.
• Check the polarity of the circuit.
• Verify that the terminals are screwed down, wires are firmly in place.
• Disconnect the wires from the current sensor output. Measure the voltage
across the current sensor output with a Voltmeter to verify that the sensor
is working properly.
• Verify that the wires are terminated properly.
• In areas of high RF interference, shielded cable may be necessary to
stabilize signal.
• If you suspect that the current sensor is not reading within the accuracy
specifications, please contact the factory for assistance.
• Visually check the mating parts of the core to ensure there is no debris
between the split contacts. See Figure 2.
• Remove all debris or dust manually and close the current sensor.
• Continue to retest the sensor in your application.
sensitive and represent a linear 0 to 5 or 0 to 10 VDC
output signal. Tighten the screws at the terminal block
connections to the recommended torque of 0.5 to 0.6
Nm (4.43 to 5.31 in-lbs.). The aperture (hole) size of
the current sensor is 0.75" (1.90 cm).
SHIELDED CABLE
Solution
3
(–) SIGNAL COMMON
+0-5 0-10 VDC
ANALOG INPUT
GND (SHIELD)
PLC, DDC OR DATA
ACQUISITION SYSTEMS
M37360
31-00144—02
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