523
Troubleshooting Tables
Section 12-1
12-1-2 Problems and Countermeasures
• If any errors occur that are not covered in the following tables, print out the
contents of the PLC Interface Area and related DM Area words from the
CX-Programmer or other Programming Device and provide them to your
OMRON representative.
• If an operation cannot be properly executed, it may be that a program or
parameters were not saved when they were transferred. Upload the
parameters, programs, or position data from the MC Unit and open the file
and check to be sure that the data was transferred and saved properly.
• If an operation cannot be properly executed, there may be an error in data
or signal exchange between the ladder program and the MC Unit. Try per-
forming the operation with the Teaching Box. If the operation can be per-
formed using the Teaching Box, then there may be a problem with the
ladder program. Use the CX-Programmer data trace function to check
whether the data is being exchanged at the correct timing.
No.
Problem
Probable causes
Items to check
Remedy
1
The CPU Unit’s
RUN indicator does
not light when the
power is turned ON.
Power supply lines are wired
incorrectly.
Check the power supply wiring.
Correct the power supply
wiring.
2
The power supply voltage is
low.
Check the power supply voltage. Check the power supply
capacity and correct the
power supply.
3
An internal fuse has blown.
Check the fuses.
Replace the fuse and
determine what caused it
to blow. (Refer to the
troubleshooting section in
the applicable CPU Unit
operation manual.)
4
The power supply is defective. Check the power supply.
Replace the power
supply.
5
Only the MC Unit’s
RUN indicator fails
to light when the
power is turned ON.
The power supply capacity is
insufficient.
Add up the power supply
capacity for all of the Units
mounted to the same Backplane,
including the CPU Unit, and
compare that to the power
supply capacity of the Power
Supply Unit. If the combined
capacity of the Units is greater
than that of the Power Supply
Unit, then they cannot be
properly used.
Increase the power
supply capacity.
Change the configuration
so that the power supply
capacity at the Backplane
is not exceeded.
6
The MC Unit is defective.
Replace the MC Unit.
Summary of Contents for CS1W-MC221 -
Page 1: ...Motion Control Units Cat No W359 E1 04 CS1W MC221 V1 421 V1 OPERATION MANUAL ...
Page 2: ...CS1W MC221 V1 421 V1 Motion Control Units Operation Manual Revised February 2008 ...
Page 3: ...iv ...
Page 5: ...vi ...
Page 11: ...xii ...
Page 15: ...xvi ...
Page 19: ...xx ...
Page 27: ...xxviii Conformance to EC Directives 6 ...
Page 133: ...106 Installation Section 2 2 2 2 4 Dimensions CS1W MC421 CS1W MC221 ...
Page 173: ...146 Connecting Peripheral Devices Section 2 7 ...
Page 227: ...200 Command Area Section 3 6 ...
Page 351: ...324 Interface Specifics Section 5 4 ...
Page 513: ...486 Absolute Encoder Interface Specifications Section 9 7 ...
Page 575: ...548 Error Log Section 12 6 ...
Page 589: ...562 Performance Appendix A ...
Page 655: ...628 Control Bit Flag Timing Charts Appendix E ...
Page 683: ...656 Origin Search Patterns Appendix F ...
Page 685: ...658 Encoder Divider Rate and Rotation Speed for OMRON Servo Drivers Appendix G ...