Siemens Hicom 150 E Office Service Manual page 126

Hicom 150 E Office Rel.1.0 Service Manual - 3.4 Options
Figure 3-57 PFT by means of PFT1/PFT4
Installation location of the PFT1/PFT4 board (MDFU/MDFU-E)
PFT1 and PFT4 are incorporated with wires in the MDFU/MDFU-E and require
-48 V. See Figure 3-59
Figure 3-58 Installation location of PFT1 and PFT4 (MDFU/MDFU-E)
PFT1/PFT4 board assignment
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for the assignments for both boards.