Error Processing - Omron OMNUC G Series User Manual

8-1 Error Processing

8-1 Error Processing
Preliminary Checks When a Problem Occurs
This section explains the preliminary checks and analytical tools required to determine the cause of
a problem.
 Checking the Power Supply Voltage
 Check the voltage at the power supply input terminals.
Main Circuit Power Supply Input Terminals (L1, L3)
Main Circuit Power Supply Input Terminals (L1, L2, L3)
Control Circuit Power Supply Input Terminals (L1C, L2C)
If the voltage is outside of this range, there is a risk of operation failure, so be sure that the power
supply is correct.
 Check the voltage of the sequence input power supply. (+24 VIN Terminal (CN1 pin 1))
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If the voltage is outside of this range, there is a risk of operation failure, so be sure that the power
supply is correct.
 Checking Whether an Alarm Has Occurred
 Evaluate the problem using the 7-segment LED display on the front panel.
You can also evaluate the problem by using the R88A-PR02G Parameter Unit.
 CX-Drive can also be used for the display. The operation status can also be monitored.
Check the load status, including data trace.
 When an alarm has occurred:
Check the alarm code that is displayed () and evaluate the problem based on the alarm that
is indicated.
 When an alarm has not occurred:
Make an analysis according to the problem.
8-1
R88D-GNL-ML2 (50 W to 400 W): Single-phase, 100 to 115 VAC (85 to 127 V), 50/60 Hz
R88D-GNH-ML2 (100 W to 1.5 kW): Single-phase, 200 to 240 VAC (170 to 264 V), 50/60 Hz
R88D-GNH-ML2 (750 W to 7.5 kW): Three-phase, 200 to 240 VAC (170 to 264 V), 50/60 Hz
R88D-GNL-ML2: Single-phase, 100 to 115 VAC (85 to 127 V), 50/60 Hz
R88D-GNH-ML2: Single-phase, 200 to 240 VAC (170 to 264 V), 50/60 Hz
Within the range of 11 to 25 VDC