Installation Instructions for Honeywell CTS-V and CTP-V Series Current Sensors

Quick guide from the manual

This document provides installation and wiring instructions for the Honeywell CTS-V and CTP-V series current sensors. These devices are designed for AC current monitoring applications and provide a 0-5Vdc or 0-10Vdc output signal. The sensors are intended for use on insulated conductors only and are not for life, safety, or hazardous location applications.

Installation

The sensor can be mounted in any position. Ensure all installations comply with national and local electrical codes.

• Mounting: Use the two #8 x 3/4 inch Tek screws through the base mounting holes, or snap the unit directly onto a 35mm DIN rail.
• Clearance: Maintain a minimum distance of 1 inch (2.6 cm) between the current sensor and other magnetic devices such as contactors, relays, or transformers.
• Latch Operation (CTP-V Series): To open the split-core sensor, press down on the side tab and swing the top of the unit up. To close, press down firmly on the cover until an audible click is heard.
• Maintenance: Keep the mating surfaces of the magnetic core clean. Electrical contact grease is present to prevent corrosion; ensure no grit or dirt interferes with the contact between pole pieces.

Wiring

The sensor does not require external power, as it is induced from the monitored conductor.

• Cable: Use a two-conductor 16 to 22 AWG shielded copper cable.
• Distance: The maximum wire length between the sensor and the controller should be less than 30 meters (98.4 feet).
• Grounding: Connect only one end of the shield to ground at the controller to avoid ground loops. Trim the shield at the sensor end to prevent shorting.
• Terminals: The terminals are polarity sensitive. Tighten terminal block screws to a torque of 0.5 to 0.6 Nm (4.43 to 5.31 in-lbs).

Troubleshooting

If you encounter issues, follow these steps:

• No reading: Verify current is flowing through the conductor using a clamp-on probe. Check circuit polarity and ensure terminals are securely tightened. Disconnect wires and measure voltage across the output with a voltmeter to verify sensor function.
• Erratic readings: Ensure wires are terminated properly. In areas with high RF interference, shielded cable is required to stabilize the signal.
• Inaccurate readings: If the sensor is not reading within specifications, contact the factory for assistance.
• Low-level/Failing operation: Visually inspect the mating parts of the core for debris. Clean manually and re-close the sensor.