Toshiba T2N - Manual (Page 88)

5.Maintenance and Checks
User’s manual 73
! CAUTION
1. Turn off power before checking voltage on terminals. Failure to do so can
cause electrical shock.
2.Do not modify the T2N in hardware nor software. This can cause fire,
electrical shock or injury.
The following items are recommended minimum spares. These will allow
operation to be resumed immediately in the event of any failure.
Part Quantity Remarks
I/O modules One of each
type used
For the relay contact output,
the contact life must be taken into
account. See Section 2.3.
Fuses Number to be
used
See Section 5.5.
Batteries 1 For emergency use.
See Section 5.4.
CPU modules included
with optional cards 1
Power supply
modules 1
Keep a minimum of 1 each to
reduce down-time to the minimum.
Programmer 1set Useful for detecting the cause of a
failure.
Master programs As required Keep on FD or the like.
! CAUTION
Do not touch activated terminals of I/O modules and units. Keep the terminal
covers closed during power ON.
This can cause electrical shock or injury.
Store batteries in a cool (25
°
C or less) place as self-descharge is
greater at high temperatures.
5.3
Spare Parts to Keep in
Stock
NOTE