Toshiba PROSEC T1 User Manual page 292

9. Maintenance and Checks
9.3 Periodic checks
!
CAUTION
Check the T1/T1S based on the following items every six months. Also perform checks
when the operating environment is changed.
Power supply
Installation
condition
Input/output
290
T1/T1S User's Manual
CTi Automation - Phone: 800.894.0412 - Fax: 208.368.0415 - Web: www.ctiautomation.net - Email: info@ctiautomation.net
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.
Item
Measure the power voltage at the
T1/T1S's power terminals.
Check that the terminal screw is not
loose.
Check that the power cable is not
damaged.
Check that the unit is installed securely. Not loose, no play
Check that the option card is inserted
securely. (if any)
Check that the expansion rack/unit is
installed securely. (if any)
Check that the expansion cable is
connected securely and the cable is not
damaged. (if any)
Check that the I/O module on the
expansion rack is inserted securely. (if
any)
Measure the input/output voltage at the
T1/T1S's terminals.
Check the input status LEDs.
Check the output status LEDs.
Check that the terminal block is installed
securely.
Check that the terminal screw is not
loose and the terminal has a sufficient
distance to the next terminal.
Check that the each I/O wire is not
damaged.
Check
85 - 132/170 - 264 Vac (AC PS)
20.4 - 28.8 Vdc (DC PS)
Not loose
Not damaged
Not loose, no play
Not loose, no play
Not loose, not damaged
Not loose, no play
The voltage must be within the
specified range.
The LED must light normally.
The LED must light normally.
Not loose, no play
Not loose, not contacting the next
terminal
Not damaged
Criteria