
B–62835EN/01
2. HARDWARE
131
Fuse FU1 (3.2 A)
Fig.2.10.2(b) Location of separate MDI unit fuse
This section describes the replacement of the Power Mate–D external I/O
card fuses. The table below lists the names and drawing numbers of the
I/O cards.
2.10.3(a) I/O card drawing numbers
Name
Drawing number
I/O card A DI: 48 points, DO: 32 points A16B-2201–0071
I/O card B DI: 96 points, DO: 64 points A16B-2201–0070
I/O card D DI: 48 points, DO: 32 points A16B-2202–0733
I/O card E DI: 96 points, DO: 64 points A16B-2202–0732
The I/O card contains a +24 V power input fuse, FU1, and +5 V power
output fuse, FU2. If +5 V is not output, fuse FU1 or FU2 may have blown.
In such a case, remove the fuses from their sockets, then check their
continuity using a multimeter (or visually check whether they have
blown). If a fuse has blown, investigate the cause, take appropriate action,
then replace the fuse. The capacity, part number, and location of the fuses
are as follows:
2.10.3(b) Capacity and part number of I/O card fuses
Name
Capacity Ordering specification
FU1 3.2A A60L-0001-0175#3.2A
FU2 5.0A A60L-0001-0290#LM50
2.10.3
The I/O Card Fuses