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H622-20 Installation Guide
TM
Wiring Example
Calibration
Troubleshooting
For load currents less than sensor minimum rating:
Wrap the monitored conductor through the center hole and around the sensor body to produce multiple turns through the
“window.” This increases the current measured by the transducer.
Controller must be programmed to account for the extra turns. e.g., if four turns pass through the sensor (as shown) the normal
controller reading must be divided by 4.
4x
0.5A
0.3 A
Scale the controller software to match the current transducer’s output (0 to 5 Vdc).
SENSED AMPS
20 A
0 Vdc
0 A
5 Vdc
SENSOR OUTPUT
Issue
Solution
No reading at controller
• Check for control voltage at sensor (<5 Vdc).
• Check for amperage in monitored conductor (>2 A).
• Assure that sensor core mating surfaces are clean.
Motor
Fan
CONTROLLER
AI
CONTACTOR
Insulated Conductor ONLY
0 to 5 Vdc+
COMM
