QS40.241

Q-Series

This feature monitors the output voltage, which is produced by the power supply itself. It is independent of a back-fed

voltage from a unit connected in parallel to the power supply output.

Contact closes

As soon as the output voltage reaches 90% of the adjusted output voltage.

Contact opens

As soon as the output voltage dips more than 10% below the adjusted output voltage.

Short dips will be extended to a signal length of 250ms. Dips shorter than 1ms will be ignored.

Contact re-closes

As soon as the output voltage exceeds 90% of the adjusted voltage.

Contact ratings

max

60Vdc 0.3A, 30Vdc 1A, 30Vac 0.5A

resistive load

min

1mA at 5Vdc

min. permissible load

Isolation voltage

See dielectric strength table in section 21.

Fig. 8-1 DC-ok relay contact behavior

250ms

0.9* V

ADJ

<

1ms

10%

open

V

open

closed

closed

>

1ms

This feature allows a switch-off of the output of the power supply with a signal switch or an external voltage. The

shut-down occurs immediately while the turn-on is delayed up to 350ms. In a shut-down condition, the output voltage

is <2V and the output power is <0.5W.

The voltage between different minus pole output terminals must be below 1V when units are connected in parallel. In

a series operation of multiple power supplies only wiring option “A” with individual signal switches is allowed.

Please note:

- Option C requires a current sink capability of the voltage source. Do not use a blocking diode.

- The shut-down function has no safety feature included.

Fig. 9-1 Activation of the shut-down input

15

16

OFF: linked

ON : open

Shut-

down

Input

Option A:

15

16

OFF: I > 0.3mA

ON : I < 0.1mA

Shut-

down

Input

Option B:

-

(via open

collector)

I

n.c.

15

16

OFF: U < 1V

ON : U = 4 -29V

Shut-

down

Input

Option C:

-

(via external

voltage

+

U

n.c.

Oct. 2014 / Rev. 1.2 DS-QS40.241-EN

All parameters are specified at 24V, 40A, 230Vac, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.

www.pulspower.com Phone +49 89 9278 0

Germany

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