Product Description System
Page 46 of 110 HI 803 211 E Rev. 1.01.00
4.3.6 Redundant H41X Base Rack (24 VDC)
The I/O processing module in the H41X base rack and that in the extension rack must be
powered from different power supply units to implement redundant I/O levels in the
HIQuad H41X system. To this end, e.g., the I/O processing module in the H41X base rack can
be connected to L1+ (terminal XG5.13) and the I/O processing module in the extension rack
(terminals XG.3, L+), see Figure 20. The power supply units must be able to bridge voltage
dropouts of up to 20 ms.
Inline terminals XG5.1…XG5.13 to 24 V power supply, XG5.13 for connecting to the I/O processing
module in the H41X base rack
Connection to redundant power supply units, see Figure 20
Terminal XG.3 (L+) for connecting to 24 VDC for the I/O processing module in extension rack 1
Redundant power supply of the F 7133 power distribution modules, insert jumpers in accordance with
the application
Reference potential L-
Figure 26: Redundant Connection to H41X Base Rack and Extension Rack 1
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