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HOA
Keypad
Display
ov
Control Circuit Overvoltage
SCF
Safety Circuit Fault
SEr
Too Many Speed Search Restarts
SoH
Snubber Discharge Resistor Overheat
SrC
Phase Order Detection Fault
Srr
Internal Resistance Fault
SvE
Zero Servo Fault
TdE
Time Data Error
TIM
Time Not Set
<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
Refer to
Table 6.5
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
blinking.
Refer to Faults on page 202
HOA
Keypad
Name
Display
Station Address Setting Error (CC-
AEr
Link, CANopen, MECHATROLINK)
AL02
BAS Interlock Open
AL03
Smoke Purge in Bypass
AL04
Smoke Purge in Drive
<1>
Run Active during Restart Delay
AL09
AL13
Loss of Load
AL14
Serial Communications Alarm
AL16
Input Phase Rotation
AUv
Power Supply Undervoltage
bb
Baseblock
bUS
Option Card Communications Error
Serial Communication Transmission
CALL
Error
MEMOBUS/Modbus Communication
CE
Error
CrST
Cannot Reset
dnE
Drive Disabled
doH
Damping Resistor Overheat
Forward/Reverse Run Command
EF
Input Error
EF0
Option Card External Fault
EF1 to
External Fault
EF8
(input terminal S1 to S8)
FbH
Excessive PID Feedback
<1> Available in bypass controller software versions VST800401 and later.
YASKAWA SIEP YAIZ1D 01C Z1000U HVAC MATRIX Drive Bypass Technical Manual
Name
Page
for information on fault codes.
Table 6.5 Minor Fault and Alarm Displays
Minor Fault
Output
Page
(H2-oo = 10)
YES
–
–
–
–
–
–
–
YES
No output
<2>
YES
YES
YES
YES
YES
–
YES
YES
YES
YES
6.3 Drive Alarms, Faults, and Errors
HOA
Keypad
Display
218
UL3
Undertorque Detection 1
218
UL5
Mechanical Weakening Detection 2
218
Uv1
Control Circuit Undervoltage Fault
<3>
218
Uv2
218
Control Power Supply Voltage Fault
<3>
219
Uv3
Undervoltage 3 (Soft-Charge Bypass Circuit
219
<3>
Fault)
219
219
HOA
Keypad
Display
FbL
PID Feedback Loss
221
Fdv
Power Supply Frequency Fault
221
HCA
Current Alarm
221
inTLK
Interlock Open
221
LT-1
Cooling Fan Maintenance Time
221
221
LT-2
Capacitor Maintenance Time
221
222
Soft Charge Bypass Relay
LT-3
Maintenance Time
205
oH
Heatsink Overheat
222
oH2
Heatsink Overheat Warning
oH3
Motor Overheat
222
oL3
Overtorque 1
223
ov
Control Circuit Overvoltage
MEMOBUS/Modbus Test Mode
223
PASS
Complete
223
SAFE
Customer Safety
223
SE
MEMOBUS/Modbus Test Mode Fault
206
SoH
Snubber Discharge Resistor Overheat
SrC
Phase Order Detection Fault
224
UL3
Undertorque Detection 1
224
Uv1
Control Circuit Undervoltge
224
WrUn
Waiting for Run
224
Name
Minor Fault
Name
Output
(H2-oo = 10)
YES
–
YES
–
No output
<1>
No output
<1>
No output
<1>
YES
YES
YES
YES
YES
No output
–
YES
YES
–
YES
YES
YES
Page
219
220
220
220
220
Page
225
211
225
225
226
226
6
226
226
226
226
227
227
227
227
227
218
218
228
228
228
203
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