iPECS eMG800
Hardware Description and Installation Manual
Issue 1.8
25
3.6.3
Power Supply Unit Replacement
The PSU, which is located at the rear of the KSU, converts AC power to the DC sources required by the
system. The PSU includes a replaceable fuse, 6.3 A @ 250V and cooling fans. Each KSU comes equipped
with a PSU that is field replaceable.
Table 3.6.3-1 PSU Capacity
PSU TYPE
+5V DC
+27V DC
+30V DC
PSU (SMPS)
10.0A
1A (Battery charge)
10A
To remove the existing PSU
1)
Remove four (4) screws that hold the PSU to the KSU by turning the screws counter-clockwise.
2)
Using the PSU handle pull the PSU from the KSU.
To install the new PSU
1)
Insert the PSU along the guide rails on the rear side of iPECS eMG800.
2)
Slide PSU into the KSU to firmly seat the PSU in the backplane connector
3)
To affix securely, insert and tighten four (4) screws as shown below.
Figure 3.6.3-1 PSU Installation
NOTE
- Turn OFF the PSU in the EKSU(s) then turn OFF the PSU in the BKSU. If the PSU in the BKSU is turned
OFF first, the system will automatically remove power from the EKSU.
- The 1st and 2nd KSUs will work independent of the 3rd KSU (power shut OFF).
- The 1st KSU will work independent of the 2nd KSU (powered OFF); however, the 3rd KSU cannot work
without the 2nd KSU powered on.
- It is recommended that the iPECS eMG800 be reset if the PSU to an EKSU is power cycled or turned OFF.
