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CUI Inc

│ SERIES: VPM-S500-R │ DESCRIPTION: AC-DC POWER SUPPLY

date 01/25/2022

│ page 2 of 5

INPUT

parameter

conditions/description

min

typ

max

units

voltage

90

264

Vac

frequency

47

63

Hz

current

at 90-264 Vac, full load

8

A

inrush current

at 230 Vac, full load, cold start

70

A

input fuse

Built-in ac fuse. A blown fuse usually indicates permanent

damage to the power supply serviceable by factory only.

power factor correction

at 230 Vac, full load

0.98

OUTPUT

parameter

conditions/description

min

typ

max

units

total regulation

±1

%

transient response

output voltage returns to within 1% in less than 2.5 ms for a

50% load change. Peak transient does not exceed 5%.

overshoot

turn-on and turn-off overshoot shall not exceed 5% over

nominal voltage.

start-up time

at 230 Vac

1

s

hold-up time

at 80% load

20

ms

adjustment range

output user adjustable

±5

%

remote sense

designated as RS+ and RS- on CN3. Total voltage

compensation for cable losses with respect to the main output.

(NOT available for current sharing models.)

remote on/off

defined RSW on CN3, requiring low signal to inhibit output.

LED display (LED 1)

green - the power supply is operating normally.

orange - when any protection occurs or RSW is low.

power good

designated as PG on CN3. This signal goes high 100~500 ms

after the output reaches regulation. It goes low at least 1 ms

before loss of regulation.

current sharing

designated as CSH on CN3, optional single wired for forced

surrent sharing function and parallel up to 4 units within 10%

accuracy at full load.

current monitor

designated as CMN on CN3 for for current sense for 0.5~3 Vdc

to represent 0~100% output current.

PROTECTIONS

parameter

conditions/description

min

typ

max

units

input under voltage protection

Power supply shuts down when ac input is under 80 ±5 Vac.

When ac line reappears over 86 ±5 Vac, the power supply

restarts automatically.

over voltage protection

shutdown and latches, ac input reset required to restart

130

%

over current protection

auto recovery

110

140

%Io

short circuit protection

continuous auto recovery upon removal of short

Additional Resources: Product Page