VAR4 – Installation Guide
Issue: 02 complete, approved
Page 8 of 20
3.
Ensure that the power supply from the central equipment rack is turned off.
4.
Connect the field wiring as required; see Figure 3.
Please refer to Section “3 Connections” (page 9) for pinout details.
Figure 3
Connecting the field wiring
AUDIO
CAN
RS485
RS232
CONTROL PORTS
AUDIO OUTPUTS
AUDIO INPUTS (BALANCED)
AUDIO INPUTS
(UNBALANCED)
5.
Connect the dual power supply to the rear panel connectors; see Figure 4.
!
!
1) Ensure power supply cabling is adequately rated.
2) Always route power supply cabling away from amplifier input cabling in the equipment rack
to reduce the risk of noise pick-up.
Figure 4
Connecting the DC power supply
Wago Connectors:
Use one of the two methods shown in the diagram below to terminate
the cabling in the Wago connectors.
When the screwdriver is removed, the bare end of the wire will be held
securely by the contact spring.
To remove the wire, reverse the process.
DUAL DC POWER
SUPPLY: 18-40 V DC
6.
Power the unit on from the central equipment rack.
7.
The installation is now complete and ready for system commissioning.
