ASEM BM1 Series, User Manual

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28 SECTION 3 – Installation and connection
3.7.2 Power connector assembly
SYSOFF and the PS signals are used to command and monitor the system status.
The following table describes their behavior:
SYS OFF (IN) PS (OUT) Power supply input System status
Either 0V or unconnected +24V +24V ON
+24V 0V +24V OFF
Table 4 – SYSOFF-PS-Input power-Power supply behaviour.
Figure 30 – Power connector
PIN Function Additonal notes
GND - Input voltage
+24V + Input voltage (fused)
SYS OFF System OFF input
PS Power Status output (0.5A limited)
Table 5 – Power connector signals.
3.7.2.1 Power connector cabling
• Remove the four poles plug connector from the system.
Figure 31 – Power connector detail
• Use four wires (not included) with a cross-section of 1.5 mm² [AWG16] with copper conductor, certified for operation at least 75°C.
Figure 32 – Power connector cabling
• Strip 10mm the covering from the edges.
• Insert the stripped ends into the power connector respecting the polarity indicated and fix it securely to the wires.
Figure 33 – Power connector detail
3.7.3 Power supply isolation
The BM1xx power supply is galvanically isolated which means its output is electrically separated from its input. This feature has many bene-
fits:
• Increases the noise immunity of the system
• Avoids input short circuits in systems with the power supply grounded
• Breaks ground loops which may cause interferences in the video signals.
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