6.3 Drive Alarms, Faults, and Errors
u
Types of Alarms, Faults, and Errors
Check the LED operator for information about possible faults if the drive or motor fails to operate.
Refer to Using the
Digital LED Operator on page 54
.
If problems occur that are not covered in this manual, contact the nearest OYMC representative with the following
information:
• Drive model
• Software version
• Date of purchase
• Description of the problem
Table 6.3
contains descriptions of the various types of alarms, faults, and errors that may occur while operating the drive.
Table 6.3 Types of Alarms, Faults, and Errors
Type
Drive Responses to Alarms, Faults, and Errors
Faults
When the drive detects a fault:
• The digital operator displays text that indicates the specific fault and the ALM indicator LED remains lit until the fault
is reset.
• The fault interrupts drive output and the motor coasts to a stop.
• Depending on the setting, the drive and motor may stop via different methods than listed.
• If a digital output is programmed for fault output (H2-01 = E), it will close if a fault occurs.
When the drive detects a fault, it will remain inoperable until that fault has been reset.
Refer to Fault Reset Methods on
page 133
.
Minor Faults and
Alarms
When the drive detects an alarm or a minor fault:
• The digital operator displays text that indicates the specific alarm or minor fault and the ALM indicator LED flashes.
• The motor does not stop.
• The multi-function contact output closes if set to be tripped by a minor fault (H2-01 = 10), but not by an alarm.
• The digital operator displays text indicating a specific alarm and ALM indicator LED flashes.
Remove the cause of an alarm or minor fault to automatically reset.
Operation Errors
When parameter settings conflict with one another or do not match hardware settings (such as with an option unit), it results
in an operation error.
When the drive detects an operation error:
• The digital operator displays text that indicates the specific error.
• The multi-function contact output does not operate.
When the drive detects an operation error, it will not operate the motor until the error has been reset. Correct the settings
that caused the operation error to reset.
u
Alarm and Error Displays
n
Faults
When the drive detects a fault, the ALM indicator LEDs remain lit without flashing. If the LEDs flash, the drive has
detected a minor fault or alarm.
Refer to Minor Faults and Alarms on page 122
for more information. Conditions such
as overvoltage or external faults can trip both faults and minor faults, therefore it is important to note whether the LEDs
remain lit or if the LEDs flash.
Table 6.4 Fault Displays
LED Operator
Display
Name
Page
CE
MEMOBUS/Modbus
Communication Error
123
CoF
Current Offset Fault
123
or
CPF00 or
CPF01
<1>
CPF11 – RAM Fault
123
CPF12 – FLASH Memory Fault
123
CPF14 – Control Circuit Fault
123
CPF17 – Timing Fault
123
CPF18 – Control Circuit Fault
123
CPF02 A/D Conversion Error
123
CPF06
Drive specification mismatch during
Terminal Board or Control Board
replacement
123
CPF08 EEPROM Serial Communications
Fault
123
or
CPF20 or
CPF21
<2>
RAM Fault
123
FLASH Memory Fault
123
Watchdog Circuit Exception
123
Clock Fault
123
CPF22 A/D Conversion Error
124
LED Operator
Display
Name
Page
CPF23 PWM Feedback Data Fault
124
CPF24 Drive Capacity Signal Fault
124
EF0
Option Unit External Fault
124
to
EF1 to
EF5
External Fault (input terminal S1 to
S5)
124
Err
EEPROM Write Error
124
oC
Overcurrent
124
oFA01 Option Disconnected
125
oH1
Heatsink Overheat
125
oL1
Motor Overload
125
oL2
Drive Overload
126
oL3
Overtorque Detection 1
126
oPr
Operator Connection Fault
126
ov
Overvoltage
130
PF
Input Phase Loss
127
rH
Dynamic Braking Resistor
127
Uv1
Undervoltage
127
Uv3
Soft Charge Circuit Fault
127
6.3 Drive Alarms, Faults, and Errors
SIEP C710606 33A OYMC AC Drive – J1000 User Manual
121
6
Troubleshooting