VAS PS21, Руководство по эксплуатации

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Pic 3 Back panel appearance.
The following items are located on the back panel:
1.
“Power for amplifier 24V” – the main switchable 24V…28V Output for amplifier
backup supply. The 24V voltage appears on this output in case of 2 events. Power
switch is turned on, and 24V comes to the “Control Commutation Output” clamp.
2.
“Input 220V from Control Unit” is to control the switchable 220V output.
3.
“Output 220V to another supply unit” is to connect the control voltage to the next
power supply unit. ATTENTION! This output is calculated for small current. It is
strictly prohibited to connect power amplifier to this socket.
4. Fuse 220V, 2A
5.
“Power to amplifier 220V” socket is switchable 220V socket for power supply to
amplifier.
6.
“220V 2A” Socket is to connect the unit to the main power circuit 220V.
7.
“Ground” clamp is for protection grounding.
8, 9, 10. “Battery 1”, Battery 2”, “Battery 3” is for installation of protective fuses for each
of three pairs of batteries.
11. Multifunctional terminal block. It consist following contacts:

“24V control input”

Nonswitchable outputs 12V, 2A and 24V, 2A

Open collector type Failure output. Close to the ground in case of main power loss
or battery failure.

Open collector type Start output. Close to the ground in case of voltage supply to
switchable 24V and/or 220V outputs.
Typical connection diagrams of power supply unit “VAS-PS-XX” as part of Public Address and
Evacuation management system are shown on appendixes 1-5.