ADIX-VS Technical Manual
Section 2 – ADIX-VS Hardware
32
VS-PWSU Power Supply
The VS-PWSU power supply is the main power source for the ADIX-VS system. It generates the DC
voltages required for system operation. In addition it includes the ring generator voltage for the
single-line ports. The DC output voltages of the power supply are +5 Vdc and +27 Vdc. These
voltages are converted from the 120 Vac commercial power supply or the +24 Vdc emergency
backup battery at the main power supply unit.
The VS-PWSU is mounted with four screws in the VS-KSU. The VS-PWSU connecting cable is
connected with the VS-MAIN (CN2). The VS-PWSU must be grounded to a dedicated ground
terminal on the VS-MAIN.
System Power Supply Specifications
Model:
VS-PWSU
BTU:
Part No.:
057002
Circuit Protection:
F1 250V, 5amp fuse
Input Requirement:
F2 250V, 6amp fuse
120±12Vrms,50-60Hz
F3 250V, 5amp fuse
Output:
Connectors:
5VDC/max3.5amps for transistor logic
CN6 To Motherboard(VS-MAIN)
27VDC/max2.6amps for talk battery, relay and key
telephone
BAT1 To Battery
BAT2 To Battery
Ring Generator Output:
CN1 To AC INPUT
198 Vpp, 83 Vrms
CN6
1
2
3
4
5
6
7
PF
GND(5V)
5V
27V
GND(27)
NC
NC
PF = Power Failure signal
BAT1
BAT2
CN1
DC
OUTPUT
AC
ON
STANDB
CN6
FIGURE 7. VS-PWSU POWER SUPPLY
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