Troubleshooting - YASKAWA Z1000U Series Quick Start Manual

i.6

Troubleshooting

Refer to the Z1000U HVAC MATRIX Drive User Manual TOEP C710636 10 for information on Troubleshooting and
complete product instructions necessary for proper installation, set-up, troubleshooting and maintenance.
The Z1000U HVAC MATRIX Drive User Manual is posted on the Yaskawa website, www.yaskawa.com.
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Fault Detection
n Fault Displays
A fault is indicated by a code on the data display and the ALM LED is on. The drive output is always switched off immediately
and the motor coast to stop.
To reset a fault, trace and remove the cause, and push 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
Aov
AUv
bAT
bUS
CE
CoF
CPF00 to CPF03, CPF07,
CPF08, CPF11 to CPF14,
CPF16 to CPF24
CPF26 to CPF35
CPF40 to CPF45
<1> <2>
CPF06
CPF25
doH
EF0
EF1
EF2
EF3
YASKAWA ELECTRIC TOEP C710636 11E Z1000U HVAC MATRIX Drive Quick Start Guide
Power Supply Overvoltage
The input power supply voltage became equal to or higher than the Input Power Supply Overvoltage Detection Level.
200 V Class: Approximately 277 Vrms
400 V Class: Approximately 630 Vrms
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
HOA Keypad Battery Low
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.
MEMOBUS/Modbus Communication Error
Control data was not received for the CE detection time set to H5-09.
Current Offset Fault
Drive starts operation while the current-detection circuit failure, or the induced voltage remains in the motor (coasting
and after rapid deceleration).
Control Circuit Error
Control Circuit Error
There is an error in the data saved to EEPROM.
Terminal Board Not Connected
Damping Resistor Overheat
The temperature of the built-in damping resistor exceeded the set value.
Option Card External Fault
An external fault condition is present.
External Fault (input terminal S1)
External fault at multi-function input terminal S1.
External Fault (input terminal S2)
External fault at multi-function input terminal S2.
External Fault (input terminal S3)
External fault at multi-function input terminal S3.
NOTICE
Fault Name
i.6 Troubleshooting
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