Procedure
•
Use shielded cable between the output and the receiving device.
—
Terminate the shielding at the receiving device. If this is impossible, terminate the shielding at the
cable gland or conduit fitting.
—
Do not terminate the shielding inside the wiring compartment.
—
360-degree termination of shielding is unnecessary.
•
Eliminate the RFI source.
•
Move the transmitter.
17.34 Check sensor-to-transmitter wiring
A number of power-supply and output problems may occur if the wiring between the sensor and the
transmitter is improperly connected, or if the wiring becomes damaged.
Be sure to check all wiring segments:
•
If you have a 4-wire transmitter, check the wiring between the transmitter and the core processor.
•
If you have a 9-wire transmitter, check the wiring between the transmitter and the sensor junction box.
•
If you have a remote transmitter with remote core processor, check the wiring between the transmitter
and the core processor and the wiring between the core processor and the sensor junction box.
Prerequisites
You will need the installation manual for your transmitter.
Procedure
1. Before opening the wiring compartments, disconnect the power source.
DANGER
If the transmitter is in a hazardous area, wait five minutes after disconnecting the power.
2. Verify that the transmitter is connected to the sensor according to the information provided in the
installation manual.
3. Verify that the wires are making good contact with the terminals.
4. Check the continuity of all wires from the transmitter to the sensor.
17.35 Check the sensor coils
Checking the sensor coils can identify a cause for a no sensor response alert.
Procedure
1. Disconnect power to the transmitter.
CAUTION
If the transmitter is in a hazardous area, wait 5 minutes before continuing.
Configuration and Use Manual
Troubleshooting
MMI-20025166
March 2019
Configuration and Use Manual
301