Omron Q2V Series Technical Manual page 239

Code Name
Note:
• The drive detects this error if the Run command or frequency reference is assigned to the option card.
• If the drive detects this error, the terminal set to H2-01 to H2-03 = 4 [MFDO Function Select = Alarm] will activate.
• If the drive detects this error, it will operate the motor as specified by the stopping method set in F6-01 [Comm.Error Selection].
Code Name
CALL Serial Comm Transmission Error
Note:
• The drive detects this error if it does not correctly receive control data from the controller when energizing the drive.
• If the drive detects this error, the terminal set to H2-01 to H2-03 = 4 [MFDO Function Select = Alarm] will activate.
Code Name
CE Modbus Communication Error
Note:
• The drive detects this error if it does not correctly receive control data for the CE detection time set to H5-09.
• If the drive detects this error, the terminal set to H2-01 to H2-03 = 4 [MFDO Function Select = Alarm] will activate.
• If the drive detects this error, it will operate the motor as specified by the stopping method set in H5-04 [Mbus Error Stop].
Code Name
CP1 Comparator 1 Limit Error
Note:
• The drive detects this error when the terminal is assigned to H2-01 to H2-03 = 3C [MFDO Function Select = Comparator 1].
• If the drive detects this error, the terminal set to H2-01 to H2-03 = 4 [MFDO Function Select = Alarm] will activate.
• Parameter H2-33 [Compare1 Protection Selection] enables and disables CP1 detection.
Code Name
CP2 Comparator 2 Limit Error
Note:
• The drive detects this error when the terminal is assigned to H2-01 to H2-03 = 3D [MFDO Function Select = Comparator 2].
• If the drive detects this error, the terminal set to H2-01 to H2-03 = 4 [MFDO Function Selection = Alarm] will activate.
• Parameter H2-35 [Compare2 Protection Selection] enables and disables CP2 detection.
Code Name
CrST Cannot Reset
SIEPCYEUOQ2V01A Q2V Technical Manual
Causes
The option card is damaged.
Causes
The communications cable wiring is incorrect.
There is a short-circuit in the communications cable
or the communications cable is not connected.
A programming error occurred on the controller
side.
The communications circuitry is damaged.
The termination resistor setting for Modbus
communications is incorrect.
Causes
The communications cable wiring is incorrect.
There is a short-circuit in the communications cable
or the communications cable is not connected.
Electrical interference caused a communication data
error.
The communication protocol is not compatible.
The value set in H5-09 [Mbus CE Detect Time] is
too small for the communications cycle.
The controller software or hardware is causing a
communication problem.
Causes
The monitor value set in H2-20 [Compare1 Mon.
Selection] was in the range of H2-21 [Compare1
Low Limit] and H2-22 [Compare1 Up Limit].
Causes
The monitor value set in H2-26 [Compare2 Mon.
Selection] was outside the range of H2-27
[Compare2 Low Limit] and H2-28 [Compare2 Up
Limit].
Causes
The drive received a fault reset command when a
Run command was active.
7.5 Minor Faults/Alarms
Possible Solutions
If the alarm continues and the wiring is correct, replace the option
card.
Possible Solutions
Correct wiring errors.
• Repair the short-circuited or disconnected portion of the cable.
• Replace the defective communications cable.
Examine communications at start-up and correct programming
errors.
• Do a self-diagnostics check.
• If the problem continues, replace the control board or the
drive. For information about replacing the control board,
contact the manufacturer or your nearest sales representative.
On the last drive in a Modbus network, set DIP switch S2 to the
ON position to enable the termination resistor.
Possible Solutions
Correct wiring errors.
• Repair short circuits and connect cables.
• Replace the defective communications cable.
• Examine the control circuit lines, main circuit lines, and
ground wiring, and decrease the effects of electrical
interference.
• Make sure that a magnetic contactor is not the source of the
electrical interference, then use a Surge Protective Device if
necessary.
• Use only the recommended cables or other shielded line.
Ground the shield on the controller side or the drive input
power side.
• Separate the communication wiring from drive power lines,
and install a noise filter to the input side of the power supply
for communication.
• Decrease the effects of electrical interference from the
controller.
• Examine the values set in H5-xx.
• Examine the settings on the controller side and correct the
difference in communication conditions.
• Change the controller software settings.
• Increase the value set in H5-09.
Examine the controller and remove the cause of the problem.
Possible Solutions
Examine the monitor value and remove the cause of the fault.
Possible Solutions
Examine the monitor value and remove the cause of the fault.
Possible Solutions
Turn off the Run command then de-energize and re-energize the
drive.
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