January 2012 3.6 Supply Voltages in the HSCI System 187
X74: +5 V power
supply for CC
Maximum wire cross section: 2.5 mm
2
If the system includes several CCs 61xx that are connected to the same sup-
ply bus (X69) via a UV supply module, it is usually sufficient to connect only the
last CC 61xx (usually the unit at the extreme right) to the UV via X74. The other
CC 61xx units are then supplied via supply bus X69.
If several CC 61xx units are supplied by more than one UV supply module,
which means that they are connected to different supply bus systems (X69),
then the last CC 61xx (usually the unit at the extreme right) of the respective
supply bus must also be supplied with the additional +5 V of the UV via X74.
Please check whether the +5 V supply of all drive control motherboards is
ensured when initially configuring the control. The voltage is displayed in the
DriveDiag diagnosis tool. On the "Voltages and currents" tab for the drive con-
trol boards, you will find the +5 V supply voltage. The value of this voltage
should not be below +4.90 V. If it is, further CC 61xx units must also be pow-
ered with +5 V via X74.
Connecting terminal
at X74
Assignment
1 +5 V from the UV supply module (X74)
20V
The +5 V supply via X74 from the supply module is mandatory for the
CC 61xx!
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