Installation MACH1000
Release
06
03/2021
27
1.3.7 Connections for voltage-carrying lines
The supply voltage is electrically isolated from the casing.
A device has one or two internal power supply units. Each power supply unit
has a connection for the supply voltage and a connection for the signal
contact.
The power supply unit types have the following different properties:
Type of connections: terminal or plugged
Type of connectable supply voltages: DC or AC voltage
Level of connectable supply voltages:
For devices without PoE featuring 2 power supply units, you can connect the
supply voltage redundantly. Both inputs are uncoupled. With a non-
redundant supply of the supply voltage, the device reports the loss of a
supply voltage. You can prevent this message by applying the supply voltage
via both inputs, or by changing the configuration in the Management.
Note: At positions 36 and 37 of the product code (see table 1) you find which
power supply characteristic values your device has.
The following tables provide an overview of the possible connections for
voltage-carrying lines:
1 Power supply unit 2
a
Possible supply voltage
characteristic values:
C DC voltage connectable
Voltage range:
See “General technical data” on
page 54.
G
b
DC or AC voltage connectable
Voltage range:
See “General technical data” on
page 54.
Table 4: Connections for voltage-carrying lines:
rear view of the device variants with terminal connections
4 5321
Relay 2
N
L
4 5321
Relay 1
N
L
4 5
Relay 1
321
N
L
12
34
5
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