Siemens siprotec 7SA522 User Manual page 513

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Reassembling the
Device
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7SA522 Manual
C53000-G1176-C119-2
B20 T4H250V
B30 B40 T2H250V
Figure 9-5 Power supply mini-fuse on the input/output printed circuit board I/O–1
Table 9-1 Assigning of the mini-fuse rating to the device auxiliary voltage rating
7SA522∗ Version
–2∗∗∗∗–∗∗∗∗
–4∗∗∗∗–∗∗∗∗
–5∗∗∗∗–∗∗∗∗
–6∗∗∗∗–∗∗∗∗
Install the new fuse into the holder.
Carefully install the I/O board I/O-1 in the case. The insertion locations are indicated
in Figures 8-7 and 8-8 in Sub-section 8.1.3.
To reassemble the device:
Connect the ribbon-cable between the I/O board and the CPU board. Be especially
careful not to bend any of the connector pins! Do not use force! Be sure the connectors
latch.
Connect the ribbon-cable between the CPU board and the front panel. Be especially
careful not to bend any of the connector pins! Do not use force! Be sure the plug con-
nectors latch.
For a model with detached operator panel, first connect the ribbon-cable from the 68-
pin connector on the back of the device to the CPU board. Then attach connector X16
under the D-subminiature port on the CPU board. The X16–connector can be plugged
in either direction.
Carefully replace the front panel being mindful of the ribbon-cables. Fasten the front
panel to the case with the screws.
Replace the covers.
The following steps are not applicable for the surface mount version:
F1
Rated Auxiliary Voltages
24 V to 48 V—
60 V to 125 V—
∼
110 V to 250 V—, 115 V
∼
220 V to 250 V—, 115 V
Routine Checks and Maintenance
Fuse Type
T4H250V
T2H250V
T2H250V
T2H250V
9-11