YASKAWA Z1000U Series Quick Start Manual page 66

i.6 Troubleshooting
HOA Keypad Display
STo
SvE
TdE
TIM
UL3
UL5
Uv1
Uv2
Uv3
<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.
u
Alarm Detection
n Alarm Codes
An alarm is indicated by a code on the data display and the flashing ALM LED. The drive output is not necessarily switched
off.
To remove an alarm, trace and remove the cause, and reset the drive by pushing the Reset key on the keypad or cycle the
power supply.
Refer to the User Manual for a complete list of causes and possible solutions.
HOA Keypad Display
AEr
AUv
bb
bUS
CALL
CE
CrST
dnE
66
Pull-Out Detection
Motor pull out or step out has occurred. Motor has exceeded its pull-out torque.
Zero Servo Fault
Position deviation during zero servo.
Time Data Error
Time Not Set
Undertorque Detection 1
The current has fallen below the minimum value set for Torque Detection Level 1 (L6-02) for longer than the allowable
time (L6-03).
Mechanical Weakening Detection 2
The operation conditions matched the conditions set to L6-08.
Control Circuit Undervoltage Fault
Voltage in the control circuit fell below the detection level:
• For 200 V class drives: approximately 175 V
• For 400 V class drives: approximately 350 V
Control Power Supply Voltage Fault
Voltage is too low for the control drive input power.
Undervoltage 3 (Soft-Charge Bypass Relay Fault)
The soft-charge bypass relay failed.
Station Address Setting Error (CC-Link, CANopen, MECHATROLINK)
Option card node address is outside of the acceptable setting range.
Power Supply Undervoltage
The input power supply voltage became equal to or lower than the Input Power Supply Undervoltage Detection Level
(L2-21).
200 V Class: Approximately 150 Vrms
400 V Class: Approximately 300 Vrms
Baseblock
Drive output interrupted as indicated by an external baseblock signal.
Option Communication Error
• The connection was lost after establishing initial communication.
• Only detected when the run command frequency reference is assigned to an option card.
Serial Communication Transmission Error
Communication has not yet been established.
MEMOBUS/Modbus Communication Error
Control data was not received for the CE detection time set to H5-09.
Cannot Reset
Drive Disabled
Fault Name
Alarm Name
YASKAWA ELECTRIC TOEP C710636 11E Z1000U HVAC MATRIX Drive Quick Start Guide