34
Installation MACH1040
Release
05
03/2021
Note: In the device variants MAR1042 and MAR1142, power supply
unit 2 is exclusively a PoE power supply unit. A redundant power supply
of the basic device is not possible.
2.3.1 Connecting the supply voltage
Note: Observe the permitted voltage ranges for devices with
certification characteristic value T (EN 50155 Railway (train)).
See “General technical data” on page 45.
Relevant for North America:
The torque for tightening the supply voltage terminal block on the device is
0.51 Nm (4.5 lb-in).
The terminal blocks for devices with power supply unit characteristic value M
or L are coded to prevent them from being accidentally connected to devices
with power supply unit characteristic value L or M.
Figure 3: Power supply unit supply voltage characteristic value L, DC voltage (see
on page 45 “General technical data”)
Connecting
1 - Supply voltage
2 - Signal contact
WARNING
ELECTRIC SHOCK
Connect only a supply voltage that corresponds to the type plate of your
device.
Failure to follow these instructions can result in death, serious injury,
or equipment damage.
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