Verilink AS2000: The Basics (880-502981-001) Product Manual - Manual (Page 54)

Hardware Installation
4-8 Verilink Access System 2000: The Basics
2. Insert the positive wire into the RTN socket of the DC input
connector, and tighten.
3. Insert the ground wire into GND socket and tighten.
4. Install the fuse when all connections are made.
Figure 4-7 PWR 2940 DC Input Connector
Connect the
Power Supply
Alarm
Connect the power supply alarm relay contacts from P3 (POWER
SUPPLY ALMS) on each Multi-line shelf to the office alarm
equipment. Refer to
Figure 4-8 .
Figure 4-8 Power Supply Alarm Relay Contact Wiring
A normally closed (NC) contact, a normally open (NO) contact, and a
common (COM) lead are provided for each power supply. Applying
power activates the NO and NC contacts. When power to the
equipment is lost or a power supply fails, the relay deactivates,
forcing the NO contacts closed and the NC contacts open. Connect
COM to NC or NO, depending on your office equipment. Torque
connector wire set screws to 4.5 to 8.0 inch lb (0.5 Nm to 0.9 Nm).
NC COM NO NC COM NO
NC COM NO
Supply A
Alarm
NC COM NO
Supply B
Alarm