User Guide Modem 3460

3460 Fast’R
1-25
DC Power Module
The AccessWay -48 VDC-powered enclosure provides:
• Optional independent dual DC power module operation
• Optional independent dual DC power source connections
• Relay contacts for connection to an alarm monitoring device
Connecting to DC Power Supply
You may connect the AccessWay to a single DC power source, or to two
separate sources (to enable the AccessWay to continue operating if one
power source fails).
Connecting the AccessWay to DC Power Supply
Step Action
1. Obtain wire that is rated AWG 20, stranded, 300 V insulation.
2. Optionally: remove the AccessWay power terminal block from
its connector on the rear of the AccessWay unit. It is easier to
work with the block when it is removed.
3. Strip several lengths of wire to 0.3” (7 mm) from the ends. Use
them to make the following connections. Ttighten connectors so
they are snug.
4.
Caution
Ensure that the DC power source is turned off
before making connections.
To operate with single or dual DC battery or power source,
connect:
a) The AccessWay VA terminal to the battery’s
- (negative) terminal
b) One AccessWay COM terminal to the battery’s
+ (positive) terminal
c) The AccessWay CH GND terminal to frame ground
5. For operation with dual DC battery or power sources, connect:
a) The AccessWay VB terminal to the second battery’s
- (negative) terminal
b) The remaining COM terminal to the second battery’s
+ (positive) terminal