Refer to, For a list of alarm codes, Minor faults and alarms – Yaskawa Z1000U User Manual
Page 191: Operation errors
HOA
Keypad
Display
Name
Page
Uv2
<3>
Control Power Supply Voltage Fault
HOA
Keypad
Display
Name
Page
Uv3
<3>
Undervoltage 3 (Soft-Charge Bypass Circuit
Fault)
<1> Displayed as CPF00 when occurring at drive power up. When one of the faults occurs after successfully starting the drive, the display will show
CPF01.
<2> Displayed as CPF20 when occurring at drive power up. When one of the faults occurs after successfully starting the drive, the display will show
CPF21.
<3> Fault histories are not kept when CPF00, CPF01, CPF06, CPF24, Fdv, oFA00, oFb00, oFC00, Uv1, Uv2, or Uv3 occur.
n
Minor Faults and Alarms
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 drive 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-oo = 10). A fault (not an alarm) is present if the ALM LED lights without
for information on fault codes.
Table 5.6 Minor Fault and Alarm Displays
HOA
Keypad
Display
Name
Minor Fault
Output
(H2-oo = 10)
Page
AEr
Station Address Setting Error (CC-
Link, CANopen, MECHATROLINK)
YES
AUv
Power Supply Undervoltage
YES
bb
Baseblock
No output
<2>
bUS
Option Card Communications Error
YES
CALL
Serial Communication Transmission
Error
YES
CE
MEMOBUS/Modbus Communication
Error
YES
CrST
Cannot Reset
YES
dnE
Drive Disabled
YES
doH
Damping Resistor Overheat
–
EF
Forward/Reverse Run Command
Input Error
YES
EF0
Option Card External Fault
YES
EF1 to
EF8
External Fault
(input terminal S1 to S8)
YES
FbH
Excessive PID Feedback
YES
FbL
PID Feedback Loss
YES
Fdv
Power Supply Frequency Fault
–
HOA
Keypad
Display
Name
Minor Fault
Output
(H2-oo = 10)
Page
HCA
Current Alarm
YES
LT-1
Cooling Fan Maintenance Time
No output
<1>
LT-2
Capacitor Maintenance Time
No output
<1>
LT-3
Soft Charge Bypass Relay
Maintenance Time
No output
<1>
oH
Heatsink Overheat
YES
oH2
Heatsink Overheat Warning
YES
oH3
Motor Overheat
YES
oL3
Overtorque 1
YES
ov
Control Circuit Overvoltage
YES
PASS
MEMOBUS/Modbus Test Mode
Complete
No output
SE
MEMOBUS/Modbus Test Mode Fault
YES
SrC
Phase Order Detection Fault
–
UL3
Undertorque Detection 1
YES
Uv
Control Circuit Undervoltge
YES
WrUn
Waiting for Run
YES
<1> Output when H2-oo = 2F.
<2> Baseblock alarm “bb” will not activate a digital output programmed for minor fault H2-0o= 10. Set H2-0o = 8 or 1B to activate a digital otuput
for “bb”.
n
Operation Errors
Table 5.7 Operation Error Displays
HOA
Keypad
Display
Name
Page
oPE01
Unit Capacity Setting Fault
oPE02
Parameter Range Setting Error
oPE03
Multi-Function Input Selection Error
oPE05
Initialization Required
oPE07
Multi-Function Analog Input Selection Error
oPE08
Parameter Selection Error
HOA
Keypad
Display
Name
Page
oPE09
PID Control Selection Fault
oPE10
V/f Data Setting Error
oPE11
Carrier Frequency Setting Error
oPE16
Energy Saving Constants Error
oPE27
BP Program Error
oPE28
Sequence Timer Error
5.3 Drive Alarms, Faults, and Errors
YASKAWA ELECTRIC TOEP C710636 10B Z1000U HVAC MATRIX Drive User Manual
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5
Troubleshooting