Connecting The Dc Power Cord - 3Com MSR 50-40 ROUTER. Installation Manual

Figure 3-4 Power socket on AC-powered units
(1) Power switch
AC power socket (recommended)
You are recommended to use a three-terminal single-phase power socket with ground contact, which
must be grounded reliably. Normally, the ground contact of the power supply system in a building was
buried during construction and cabling. Still, before connecting the AC-input power cord, you must
make sure that the power supply of the building is well grounded.
Connecting the AC power cord
Step 1: Make sure that the PGND is securely connected to the earth ground.
Step 2: Insert one end of the power cord accompanying the router into the power socket on the chassis
rear panel, and fix the cable onto the cable-retention clip with a cable strap. Connect the other end of
the cable to an AC power source at your installation site.
Step 3: Place the power switch of the router to the ON position.
Step 4: Check that the PWR LED on the front panel of the router is on for correct connection.

Connecting the DC Power Cord

DC power supply
Rated voltage range: –60 VDC to –48 VDC
The following figure illustrates the power socket and switch for a DC-powered router:
Figure 3-5 Power socket on DC-powered router
(1) Power switch
(2)
(1)
(1)
(2)
(2) AC input
(2) DC input
3-5