Wall Industries, Inc.

Rev A

PSME1200 SERIES

1200 Watts, Medical AC/DC Switching Power Supplies

06/05/2014

Wall Industries, Inc. • 37 Industrial Drive, Exeter, NH 03833 • Tel: 603-778-2300 • Toll Free: 888-597-9255 • Fax 603-778-9797

website: www.wallindustries.com • e-mail: sales@wallindustries.com

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REMOTE ON/OFF

(1) Using Internal 5V Auxiliary Source

(2) ON/OFF Control by NPN Transistor

(3) Using External Voltage Source

Power OFF

OFF

sw

Power ON

ON

EN+

EN-

AUX

GND

SW

AUX

2KΩ

Power OFF

L

Ctrl

Power ON

H

Ctrl

EN+

EN-

AUX

GND

AUX

2KΩ

Tr

GND

SW

EN+

EN-

AUX

GND

AUX

2KΩ

AUX

Power OFF

OFF

sw

Power ON

ON

Default setting

POWER OK SIGNAL

AUX and P.OK Signal

Internal Circuit

Good

Failure

GND

VSET

AUX

P.OK

DC / DC

5V/0.5A

or

9V/0.3A

* Place an additional capacitor to have a better performance of auxiliary power operation.

*

470µF

16V

AUX

LOAD

* The grounding of “AUX” power should be connected to “GND” port. If “V-“ is connected as

Grounding make sure to short the “GND” and “V-“ ports.

Open (Default Setting)

5V

VSET

Short to GND

9V

REMOTE SENSE

1) Remote Sense

2) Local Sense (Default Setting)

+

-

+

+

-

+