Replacing A Mc Unit - Omron R88A-MCW151-DRT-E Operation Manual

Replacing a MC Unit

Item Inspection points
Installation Is the MC Unit securely mounted?
and wiring
Are the cable connectors properly
inserted and locked?
Are there any loose screws in the
external wiring?
Are any crimp terminals for external
wiring too close together?
Are any external cables discon-
nected?
Required Tools
9-2 Replacing a MC Unit
Precautions
1,2,3...
There must be looseness.
There must be sufficient dis-
tance between them.
There must be no external
abnormalities.
The following tools, materials, and equipment are required when performing
an inspection.
• Phillips screwdriver
• Voltage tester or digital voltage meter
• Industrial alcohol and a clean cotton cloth
• Synchroscope
• Oscilloscope
• Thermometer
• Hydrometer
The application and communication network are affected when (part of) a Unit
is faulty, so a faulty Unit must be repaired or replaced quickly. We recommend
having a spare Unit available to restore operation as quickly as possible.
Observe the following precautions when replacing a faulty Unit.
• After replacement make sure that there are no errors with the new Unit.
• When returning a faulty Unit for repair, make a detailed record of the
problem and return the Unit to your nearest OMRON office or sales repre-
sentative.
• If there is a faulty contact, put some industrial alcohol on a clean cotton
cloth and wipe the surface.
Use the following procedure when it is necessary to replace an MC Unit.
1. Make a note of the switch settings of the MC Unit to be replaced.
2. Use Motion Perfect to check the project of the Unit and to make a local
copy saved on the Personal Computer.
3. Turn OFF the system power supply.
4. Replace the MC Unit, and reconnect the wiring as before.
5. Set the switch settings for the MC Unit.
6. Turn ON the system power supply.
7. Clear all the programs in the MC Unit.
8. Download all of the programs to the MC Unit, save the programs in flash
memory and set the correct program to run at power up.
Criteria
With a Phillips screwdriver, tighten
all mounting screws.
Carefully insert and lock all cable
connectors.
With a Phillips screwdriver, tighten
all screws in the external wiring.
Do a visual check and separate the
terminals as required.
Do a visual check and connect or
replace cables as required.
Section 9-2
Remarks
235