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T1/T1S User’s Manual
9. Maintenance and Checks
9.3 Periodic checks
Check the T1/T1S based on the following items every six months. Also perform checks
when the operating environment is changed.
Item
Check
Criteria
Power supply
Measure the power voltage at the
T1/T1S’s power terminals.
85 - 132/170 - 264 Vac (AC PS)
20.4 - 28.8 Vdc (DC PS)
Check that the terminal screw is not
loose.
Not loose
Check that the power cable is not
damaged.
Not damaged
Installation
condition
Check that the unit is installed securely. Not loose, no play
Check that the option card is inserted
securely. (if any)
Not loose, no play
Check that the expansion rack/unit is
installed securely. (if any)
Not loose, no play
Check that the expansion cable is
connected securely and the cable is not
damaged. (if any)
Not loose, not damaged
Check that the I/O module on the
expansion rack is inserted securely. (if
any)
Not loose, no play
Input/output
Measure the input/output voltage at the
T1/T1S’s terminals.
The voltage must be within the
specified range.
Check the input status LEDs.
The LED must light normally.
Check the output status LEDs.
The LED must light normally.
Check that the terminal block is installed
securely.
Not loose, no play
Check that the terminal screw is not
loose and the terminal has a sufficient
distance to the next terminal.
Not loose, not contacting the next
terminal
Check that the each I/O wire is not
damaged.
Not damaged
!
CAUTION
1. Pay special attention during the maintenance work to minimize the risk of
electrical shock.
2. Turn off power immediately if the T1/T1S or related equipment is emitting
smoke or odor. Operation under such situation can cause fire or electrical
shock.
CTi Automation - Phone: 800.894.0412 - Fax: 208.368.0415 - Web: www.ctiautomation.net - Email: [email protected]