44
Installation BAT
Release
05
03/2013
2.11 Connecting the supply voltage
For redundant and outfall-resistant power, you can connect multiple power
sources in any combination at the same time. The device automatically
selects the power supply.
Note: Switch over to a redundant power supply may not be seamless. If the
power supply currently active is interrupted and another power supply takes
over, the device may reboot to activate the redundant power supply.
2.11.1 5-pin M12 connector (BAT-F)
A 5-pin M12 connector (A coding, supplied) is used to connect the power
supply.
On delivery, the connectors are sealed with cover caps.
The housing of the M12 frame connector is electrically connected to the
functional ground (FE) ( ) and to the metal housing of the device. The
supply voltage is electrically isolated from the housing.
Note: For the BAT54-F, the voltage supply is exclusively via PoE (see on
page 45 “Power over Ethernet (PoE) - power supply via the LAN cable”).
2.11.2 4-pin terminal block (BAT-Rail)
The supply voltage is connected via a 4-pin terminal block which is locked
with screws.
Redundant power supplies can be used. Both inputs are uncoupled. There is
no distributed load. With redundant supply, the power supply unit supplies
the device only with the higher output voltage. The supply voltage is
electrically isolated from the housing.
Warning
For safety reasons the devices have been designed to operate at
low voltages. Thus, they may only be connected to the supply
voltage connections and to the signal contact with SELV circuits
with the voltage restrictions in accordance with IEC/EN 60950-1.
Figure Pin Function
1+ 24 V DC
20 V
30 V
4+ 24 V DC
5 N.C. (not used)
Table 4: Pin assignment of the 5-pin M12 connector on the BAT-F
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