222 W. Memorial Road, Oklahoma City, OK 73126-0508
Phone: 1-800-624-7697 Fax: 405-755-8425
INSTRUCTION MANUAL
MODEL PS90
90 VDC POWER SUPPLY
All of the information herein is the exclusive proprietary property of Maxcess International, and is disclosed with the
understanding that it will be retained in confidence and will neither be duplicated nor copied in whole or in part nor
be used for any purpose other than for which disclosed.
Copyright 2004, all rights reserved.
Periodically there will be updates to this manual. The latest version is available at www.magpowr.com or by calling
1-800-MAGPOWR (624-7697).
1.0 Introduction
The MAGPOWR Model PS90 is an isolated controllable current regulator for 90 vdc magnetic particle clutches and
brakes. The PS90 also provides a small amount of reverse current to minimize the drag torque of the clutch / brake.
The Model PS90 has four jumper selectable current ranges. Maximum outputs for the individual ranges are 0.125,
0.25, 0.5 and 1.0 adc. The appropriate range is determined by the current rating of the clutch or brake to be
controlled. For best torque control resolution, the lowest current range providing sufficient current for maximum
operating torque should be selected.
The PS90 accepts either a remote adjustment potentiometer, or a 0 to 10 vdc analog control signal.
Connections are provided for an external 1 madc current meter. The meter display will indicate output current as a
percentage of the output range selected.
The control circuits are electrically isolated from the power circuits.
2.0 Installation
The PS90 is intended for installation on a vertical panel with a DIN 35 rail, with the wiring terminals facing down.
Figure 1 shows the enclosure dimensions.
Figure 1
Enclosure Dimensions
850A264-1
10/04 Rev. C
6.18 [157.0 mm]2.30 [58.4 mm]
1.39 [35.2 mm] 3.38 [85.9 mm]
