5.2 Alarms, Faults, and Errors
YASKAWA ELECTRIC
TOEP C710656 10B YASKAWA Power Regenerative Unit - R1000 Instruction Manual
81
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5
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Minor Faults and Alarms
Refer to
for an overview of possible alarm codes. Conditions such as overvoltages can trip faults and alarms. It
is important to distinguish between faults and alarms to determine the proper corrective actions. When the regenerative
unit detects an alarm, the ALM indicator LED blinks and the alarm code display flashes. Most alarms trigger a digital
output programmed for alarm output (H2-
= 10). A fault (not an alarm) is present if the ALM LED lights without
blinking. Refer to
for information on fault codes.
Table 5.3 Minor Fault and Alarm Displays
Digital Operator Display
Name
Minor Fault Output
(H2-
= 10)
Page
LED
LCD
AEr
Station Number Setting Error
YES
Aov
<1> Output when H2-
= 2F.
Power Supply Overvoltage
YES
AUv
Power Supply Undervoltage
YES
bb
Baseblock
No output
bUS
Option Card Communications Error
YES
CALL
Serial Communication Transmission Error
YES
CE
MEMOBUS/Modbus Communication Error
YES
CoF
Current Offset Fault
YES
CrST
Cannot Reset
YES
CyC
MECHATROLINK Communications Cycle Setting Error
YES
E5
MECHATROLINK Watchdog Timer Error
YES
EF0
Option Card External Fault
YES
to
EF1
to
EF8
External Fault (input terminal S1 to S8)
YES
Fan
Internal Circulation Fan Fault
YES
Fdv
Power Supply Frequency Fault
YES
HCA
Current Alarm
YES
LT-1
Cooling Fan Maintenance Time
No output
LT-2
Capacitor Maintenance Time
No output
LT-3
Capacitor Maintenance Time
No output
oH
Heatsink Overheat
YES
oL2
Overload
YES
ov
Overvoltage
YES
PAUv
Power Supply Undervoltage Pre-alarm
YES
PF3
Input Phase Loss Detection
YES
PFDv
Power Supply Frequency Pre-Alarm
YES
SE
MEMOBUS/Modbus Test Mode Fault
YES
SRC
Phase Order Fault
YES
Uv
Undervoltage
YES
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