Hirschmann MSM20 User Manual

Installation MSP30/32/40/42 and MSM20/22/24/40/42/46/50
Release 12 06/2018
55
With non-redundant supply of the mains voltage, the device reports a power
failure. You can avoid this message by changing the configuration in the
management, or, with power supply units of the same type, by feeding the
supply voltage in through both inputs.
2.4.2 Supply voltage with the characteristic value P
You have the option of supplying the supply voltage redundantly, without
load distribution.
Both supply voltage inputs are uncoupled.
 Remove the power connector from the device.
 Connect the protective conductor with the clamp.
 Connect the lines for the supply voltage to the + and - terminals.
P1
P2
Table 41: Supply voltage with the characteristic value P: two 4-pin terminal blocks
Type of the voltages
that can be
connected
Specification of the supply
voltage
Pin Termin
al block
Pin assignment
Device variants with
PoE:
DC voltage
Rated voltage
48 V DC
Voltage range incl. maximum
tolerances
45 V DC ... 57 V DC
1 P1 Plus terminal of the
supply voltage
1P2
2 P1 Minus terminal of the
supply voltage
2P2
Device variants with
PoE Plus:
DC voltage
Rated voltage
54 V DC
Voltage range incl. maximum
tolerances
51 V DC ... 57 V DC
1 P1 Plus terminal of the
supply voltage
1P2
2 P1 Minus terminal of the
supply voltage
2P2
Table 42: Supply voltage with the characteristic value P: type and specification of
the supply voltage, connections
12
3
4
1
2
3
4

Hirschmann MSM20 Specifications

General

Brand	Hirschmann
Model	MSM20
Category	Switch
Language	English