28-Port Managed Industrial Gigabit Ethernet Switch
Quick Installation Guide
8
Mounting Bracket Position 2 for Standard Mount
Ground Connecting
MLB-E42XX-28
must be properly grounded for optimum system performance.
Alarm Relay Connecting
The alarm relay output contacts with current carrying capacity of 30VDC, 1A are a 2P terminal
block.
The alarm relay contact is
“Normal Open”, and it will be closed when detected any power failures.
Power Connecting
DC Power Connection
The switch can be powered from two power supply (input range 12V
– 58V). The DC power
connector is a 4P terminal block; insert the positive and negative wires into V+ and V- contact on the
terminal block and tighten the wire-clamp screws to prevent the wires from being loosened.
After completing chassis installation, please apply power to the fused power distribution panel
feeding the chassis.
Note The DC power should be connected to a well-fused power supply.