ISOCON-6 USERS GUIDE
7. TROUBLESHOOTING:
The ISOCON has some built in self diagnostic functions. If the LED on the front panel is flashing then the fault mode can be found by
counting the number of flashes between gaps and using the table below to locate the problem.
7.1 Incorrect Reading:
• Check that Unit is configured for the correct Sensor
• Check that Input Scaling is as required.
• Check that Linearisation has not been set incorrectly.
• Check that Thermocouples have correct compensation cables, and polarity.
• Check that RTD is set for correct option 2, 3 or 4 Wire.
• Check that RTD leads are connected to appropriate terminal pins.
7.1 Incorrect Reading:
• Check that sensor wiring is correct.
• Check Thermocouple polarity.
• Check that all RTD leads are connected to correct terminals.
• Check that the ISOCON is configured for correct sensor.
• Check that applied voltage is not out of range.
• Check that applied current is not out of range.
• Check that applied millivoltage is out of range.
ISOCON-6
24V AC or DC POWERED ISOLATING SIGNAL CONVERTER
No of Flashes
Nature of Fault
Corrective Action
0
(Green On)
Unit Working – no suspected fault
Check Wiring and switch settings
2,3,4,5,6,8,9,
10,11,12 Green
Hardware Error, extreme noise,
poor supply
Switch off unit, check switch settings, and wiring, and retry. If
still faulty please contact supplier
7 Green
RTD / Thermocouple burnout
Repair RTD, T/C or wiring
3 or 4 Red
Span point is too close to zero
point
Change input span value and retry
3 or 4 Yellow
Zero point is too close to span
point
Change input zero value and retry
No LED
Power Failure
Check supply lines and voltage
