Rogers GPKD-1550-H, Инструкция по эксплуатации, Страница: 46 / 49

46
CONDITION POSSIBLE CAUSE SUGGESTED REMEDY
Intercooler
pressure above
normal. 1. High 2nd stage inlet temp.
2. Defective 2nd stage.
3. Balance valve open.
4. Pressure transmitter malfunction.
1. See above.
2. Replace 2nd stage.
3. Adjust balance valve.
4. Check transmitters, wiring, IO Blocks
9.2. PLC
(See Description of Operations Manual for additional details)
CONDITION POSSIBLE CAUSE SUGGESTED REMEDY
PLC “OK” light off. 1. Control circuit fuse blown.
2. Loose Wiring Connection
3. Overload on power supply.
4. Faulty power supply
5. Faulty transformer.
1. Replace any blown fuses.
2. Tighten Wiring Connections.
3. Check DC circuit for excess load or short
circuit.
4. Measure output of power supply. Must be
DC24V +/- 0.5V.
5. Check transformer voltage.
PLC “RUN” light off. 1. PLC RUN/REM/PROG switch not in “RUN”
2. No PLC program.
3. System fault.
1. Check switch.
2. Check EPROM installation.
3. Cycle PLC power.
HMI: Screen blank. 1. Backlight off (Normal Sleep Mode)
2. Backlight off, touch does not awaken
3. No control power.
4. Fuse blown.
1. Touch the screen
2. Cycle HMI power. If backlight remains off
replace display.
3. Check control power circuit.
4. Replace fuse.
HMI: Dim screen 1. Display in sleep mode.
2. No backlighting.
3. Faulty display.
1. Touch screen.
2. Adjust backlighting brightness
3. Replace display.