Alarm Detection - YASKAWA CIMR-DC4A0040AAA Technical Manual

5.4

Alarm Detection

◆ Alarm Codes, Causes, and Possible Solutions
Alarms are converter protection functions that do not necessarily cause the converter to stop. After removing the cause of
an alarm, the converter will return to the same status is was before the alarm occurred.
When an alarm has been triggered, the ALM light on the digital operator display blinks and the alarm code display
flashes. If a multi-function output is set for an alarm (H2- = 10), that output terminal will be triggered.
Note: If a multi-function output is set to close when an alarm occurs (H2- = 10), it will also close when maintenance periods are
reached, triggering alarms LT-1 through LT-4 (triggered only if H2- = 2F).
Digital Operator
Minor Fault Name
Display
Communication Option
Station Number Setting
AEr Error (CC-Link,
MECHATROLINK)
Cause
Station number is set outside the possible
setting range.
Digital Operator
Minor Fault Name
Display
Power Supply
Aov
Overvoltage
Cause
The input power supply voltage is too high.
Digital Operator
Minor Fault Name
Display
Power Supply
AUv
Undervoltage
Cause
The power supply voltage is low.
A phase loss occurred in the input power
supply.
Voltage detection failed.
Digital Operator
Minor Fault Name
Display
bb
Cause
External baseblock signal was entered via one
of the multi-function input terminals (S1 to S8).
YASKAWA ELECTRIC SIEP C710656 06F YASKAWA Power Regenerative Converter - D1000 Technical Manual
Table 5.7 Alarm Codes, Causes, and Possible Solutions
Option card node address is outside of the acceptable setting range.
CANopen,
Set the station number of the option card correctly.
The input power supply voltage became equal to or higher than the Input Power
Supply Overvoltage Detection Level.
200 V Class: Approximately 277 Vac
400 V Class: Approximately 554 Vac
Reduce the voltage to within the range in the power supply specifications.
The input power supply voltage became equal to or lower than the Input Power
Supply Undervoltage Detection Level.
200 V Class: Approximately 150 Vac
400 V Class: Approximately 300 Vac
Increase the power supply voltage.
Check the input power supply for phase loss or an imbalance in the interphase voltages.
Investigate and correct the cause and reset the fault.
Correctly wire r1/ 11, 1/ 21, and t1/ 31.
converter output interrupted as indicated by an external baseblock signal.
Baseblock
Check external sequence and baseblock signal input timing.
5.4 Alarm Detection
Detail
Possible Solutions
Detail
Possible Solutions
Detail
Possible Solutions
Detail
Possible Solutions
Alarm
Output
(H2-=10)
YES
Alarm
Output
(H2-=10)
YES
Alarm
Output
(H2-=10)
YES
Alarm
Output
(H2-=10)
N.A.
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