![background image](http://html1.mh-extra.com/html/omron/c200h-mc221/c200h-mc221_operation-manual_742324244.webp)
224
Routine Inspections
In order for your MC Unit to continue operating at optimum condition, periodic
inspections are necessary. The main components of the Unit are semiconduc-
tors and have a long service life, but depending on the operating environment,
there may be more or less deterioration of these and other parts. A standard
inspection schedule is once every six months to one year. More frequent inspec-
tions may be advisable depending on the operating environment. Try to maintain
the inspection schedule once it has been set.
Inspection Points
Check to be sure that the power supply, ambient temperature, humidity, etc. are
within the specifications. Be sure that these are no loose screws and that all bat-
tery and cable connections are secure. Clean any dust or dirt that has accumu-
lated.
Item
Inspection points
Specification
Power Supply
Measure the voltage variations at the
power supply terminal block.
100 to 120 VAC
(Permissible voltage variation: 85 to 132 VAC max.)
200 to 240 VAC
(Permissible voltage variation: 170 to 264 VAC max.)
24 VDC
(Permissible voltage variation: 20.4 to 26.4 VDC max.)
I/O Power
Supply
Measure the voltage variations at the
I/O power supply terminal block.
Within I/O specifications.
Ambient
di i
Ambient (in-panel) temperature
0
_
C to 55
_
C
conditions
Ambient (in-panel) humidity
10% to 90% RH (no condensation)
Dust/Dirt accumulation
None
System
di i
Each Unit’s installation
No looseness
y
condition
Cable connections
Wiring terminal screws
Damage to external wiring and cables
None
Ground
Check each Unit/machine’s ground.
The ground should be connected.
Insulation
Check that each terminal is insulated.
No shorts or damage insulation
Required Tools
The following tools are recommended when performing an inspection.
Standard and Phillips-head screwdrivers
Voltmeter
Alcohol and a clean towel
Synchroscope
Oscilloscope
Humidity gauge
Thermometer
Precautions
Be sure to turn OFF the power when performing an inspection or replacing a
Unit. After replacing a Unit make sure the new Unit is operating properly.
If a contact isn’t functioning properly, try cleaning the contact with a clean cloth
an alcohol. Remove any lint from the towel before re-installing the Unit.
Before resuming operations after MC Unit replacement, be sure to transfer the
programs, position data, and system parameters that are required for starting
operations again and carry out flash write procedures.
Routine Inspections
Section 11
Summary of Contents for C200H-MC221 -
Page 1: ...Cat No W315 E1 03 Motion Control Unit C200H MC221 OPERATION MANUAL ...
Page 2: ......
Page 3: ...C200H MC221 Motion Control Unit Operation Manual Details Revised June 2010 ...
Page 4: ...iv ...
Page 6: ...vi ...
Page 10: ......
Page 12: ......
Page 16: ...xvi ...
Page 42: ......
Page 48: ......
Page 196: ......
Page 212: ......
Page 242: ......
Page 258: ......
Page 304: ......