ircon Modline 5, Руководство по эксплуатации

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Maintenance
Modline 5
Rev. L6 Feb 2017
127
7.6.1 Troubleshooting
If troubles develop in the initial installation or after periods of normal operation, these troubleshooting
suggestions may help to identify certain trouble symptoms and possibly correct the problem. If trouble
persists, call or contact IRCON Technical Services for help.
Symptom Possible Cause / Corrective Action
Symptom Number One:
Completely inoperative

No display of any kind.

No RS-485 Communications

No Analog Output
1. Check 24 Vdc Sensor power supply
2. Check AC line voltage supply connections on power supply
3. Check any line fuse, switch or circuit breaker for power supply.
4. Inspect interconnecting cable and connections for damage.
Replace Cable if problem found.
5. Replace Sensor.
Symptom Number Two:
Incorrect Temperature Indications

No temperature indication or incorrect
temperature indication. (Target
temperature known to be within system
temperature range.)

Under-range (LOW) or Over-range
(HIGH) indication displayed.

For Sensor Series 5R Ratio series
instruments. Invalid (INV or pINV)
indication displayed.
1. Sensor warmed up. See Section 5.5 Warm-up and Initial Setup ,
page 85.
2. Check Sensor sighting and focusing. Is target resolved?
3. Check for obstruction in sight path.
4. Check for background interference (reflections) causing high
temperature readings.
5. Check lens and clean if necessary. (If system includes window or
mirror, check and clean.)
6. Check ambient temperature of Sensor. If water cooling is used,
make sure coolant is flowing at recommended rate.
7. Check all control settings, particularly Emissivity or E-Slope for
Series
8. Perform Calibration Check. (M56)
Symptom Number Three:
No Analog Output, or incorrect Output

Accurate temperature displayed on rear
panel.

RS-485 Communications temperature
output okay.
1. Check wiring between the analog output terminals and external
devices.
2. Device inputs should be differential type and not grounded.
3. Make sure device is connected and adjusted correctly, and is
compatible with Modline 5 specifications.
4. Check grounding of external devices. Improper grounding could
prevent proper signals at external devices.
5. Check Analog output Zero and Full Scale Adjustment.
6. Check F / C measurement units’ selection of Sensor and external
device to make sure they are compatible.
7. Series resistance of all devices and cable pairs on Analog Output
should not exceed 600 Ohms.