System Product Description
HI 803 211 E Rev. 1.01.00 Page 47 of 110
4.3.7 24 V Distribution for HIQuad X
The 24 V power supply is distributed via a fuse and current distribution module connected to the
base racks and extension racks.
Each extension rack may be equipped with a maximum of 4 F 7133 power distribution modules.
For each F 7133, a back-up fuse (16 A) must be used in the fuse and power distribution module.
Each I/O module in the extension rack is secured by one fuse of the F 7133 power distribution
module. Each F 7133 protects 4 slots with 4 A per slot. The assignment of the power distribution
modules to the slots of the I/O modules is as follows:
F 7133 power distribution module
Supplies the I/O modules in
Table 15: Assignment of F 7133 Power Distribution Modules to I/O Module Slots
Fuse and power distribution module, see
Chapter 10.
Extension rack (F-BASE RACK 11)
F 7133 power distribution module, slot 18
F 7133 power distribution module, slot 21
Output signals
Input signals
Output module in slot 1 (example)
Input module in slot 15 (example)
Transmitter 1…3
Figure 27: 24 VDC Distribution for HIQuad X
The I/O modules are either supplied via the front cable plug or via the backplane PCB. The
XG.11 potential distributor is connected to the L- of the fuse and power distribution module. All
F 7133 power distribution modules are internally connected to the L- of the potential distributor.
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