26
Installation MACH 1000
Release
04
12/2015
The device variants of the MACH 1000 with ports on the rear panel
have the following characteristics:
The display LEDs are on the front of the device. There are up to 4 LEDs
for displaying the status of the Gigabit Ethernet ports and up to 21 LEDs
for displaying the status of the Fast Ethernet ports, as well as 6 LEDs for
displaying the device status.
The supply voltage connection and the ports are on the back of the
device. The device allows you to connect a maximum of 20 Fast Ethernet
ports as well as an additional Fast Ethernet port on the front of the device
that you can use for diagnosis purposes.
1.3.6 Connections for voltage-carrying lines
The supply voltage is electrically isolated from the housing.
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: To find out which power supply unit type your device has, refer to
positions 36 and 37 of the product code (see table 1).
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