Alarm Detection; Alarm Detection; Alarm Codes, Causes, And Possible Solutions - Omron V1000 User Manual

6.5

Alarm Detection

Alarms are drive protection functions that do not operate the fault contact. The drive will return to original status when
the cause of the alarm has been removed.
During an alarm condition, the Digital Operator display flashes and an alarm output is generated at the multi-function
outputs (H2-01 to H2-03), if programmed.
Investigate the cause of the alarm and
appropriate action.
u

Alarm Codes, Causes, and Possible Solutions

LED Operator Display
bb
Cause
External baseblock signal entered via
multi-function input terminal (S1 to S6). Check external sequence and baseblock signal input timing.
LED Operator Display
bUS
Cause
Connection is broken or master controller
stopped communicating.
Option card is damaged.
The option card is not properly connected
to the drive.
A data error occurred due to noise.
LED Operator Display
CALL
Cause
Communications wiring is faulty, there is
a short circuit, or something is not
connected properly.
Programming error on the master side.
Communications circuitry is damaged.
Terminal resistance setting is incorrect.
LED Operator Display
CE
Cause
A data error occurred due to noise.
Communication protocol is incompatible.
SIEP C710606 20 OYMC AC Drive - V1000 User Manual
Refer to Alarm Codes, Causes, and Possible Solutions on page 241
Table 6.10 Alarm Codes, Causes, and Possible Solutions
Baseblock
Drive output interrupted as indicated by an external baseblock signal.
Option Communication Error
• After initial communication was established, the connection was lost.
• Assign a run command frequency reference to the option card.
• Check for faulty wiring.
• Correct the wiring.
• Repair ground wiring or disconnected cables.
If there are no problems with the wiring and the fault continues to occur, replace the
option card.
• The connector pins on the option card are not properly lined up with the connector pins
on the drive.
• Reinstall the option card.
• Check options available to minimize the effects of noise.
• Take steps to counteract noise in the control circuit wiring, main circuit lines and
ground wiring.
• Try to reduce noise on the controller side.
• Use surge absorbers on magnetic contactors or other equipment causing the
disturbance.
• Use cables recommended by OYMC, or another type of shielded line. The shield should
be grounded on the controller side or on the drive input power side.
• All wiring for communications devices should be separated from drive input power
lines. Install an EMC noise filter to the input side of the drive input power.
Serial Communication Transmission Error
Communication has not yet been established.
• Check for wiring errors.
• Correct the wiring.
• Remove and ground shorts and reconnect loose wires.
Check communications at start-up and correct programming errors.
• Perform a self-diagnostics check.
• Replace the drive if the fault continues to occurs.
The terminal slave drive must have the internal terminal resistance switch set correctly.
Place DIP switch S2 to the ON position.
MEMOBUS/Modbus Communication Error
Control data was not received correctly for two seconds.
• Check options available to minimize the effects of noise.
• Counteract noise in the control circuit wiring, main circuit lines and ground wiring.
• Reduce noise on the controller side.
• Use surge absorbers on magnetic contactors or other equipment causing the
disturbance.
• Use cables recommended by OYMC or another type of shielded line. The shield should
be grounded on the controller side or on the drive input power side.
• Separate all wiring for communications devices from drive input power lines. Install
an EMC noise filter to the input side of the drive input power.
• Check the H5 parameter settings as well as the protocol setting in the controller.
• Ensure settings are compatible.
Minor Fault Name
Possible Solutions
Minor Fault Name
Possible Solutions
Minor Fault Name
Possible Solutions
Minor Fault Name
Possible Solutions

6.5 Alarm Detection

for the
Minor Fault
(H2- = 10)
No output
Minor Fault
(H2- = 10)
YES
YES
YES
YES
Minor Fault
(H2- = 10)
YES
YES
YES
YES
6
Minor Fault
(H2- = 10)
YES
YES
241