Magpowr PA-20 User manual

222 W. Memorial Road, Oklahoma City, OK 73126-0508
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INSTALLATION MANUAL
PA-90
Power Amplifier
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).
INTRODUCTION
The MAGPOWR®Model PA-90 power amplifier is intended for use with the DIGITRAC®2, VERSATEC™ or
EZ-TRAC®for the control of electromagnetic clutches and brakes.
PA-90 INSTALLATION
The PA-90 power amplifier is to be installed inside the control. Set jumpers on JP1 for current range before
installation. Wiring to and from the control and power amp must be done with double or reinforced insulation or
protective screening which provides protective separation. All wiring outside the control enclosures should comply
with the essential requirements of the appropriate standard(s) and is the responsibility of the installer.
WARNING: DISCONNECT MAINS BEFORE OPENING ENCLOSURE
MAINTENANCE
The only maintenance that may be required on the PA-90 is fuse replacement. Replacement of any fuse requires
opening the enclosure, which circumvents the enclosure IP rating. To change a fuse:
On a PA-90 power amplifier mounted in the D2, On a PA-90 power amplifier mounted in the D2E,
D2SLVMD, VTC, EZ or their variants: VTCE, EZE or its variants:
1. Disconnect the supply mains. 1. Disconnect the supply mains.
2. Remove the two screws which retain the top cover. 2. Open the door by loosening the two
3. Remove the top cover. retaining screws.
4. Remove and replace the blown fuse. 3. Remove and replace blown fuse on the PA-90
5. Re-install the top cover. 4. Close the door and retighten the
6. Reconnect supply mains. retaining screws.
5. Reconnect supply mains.
850A234-1
10/04 Rev. B

PA-90 POWER AMP SPECIFICATIONS
Supply Voltage: 115 vac, ±10%
Supply Frequency (AC) 50 to 60 Hz sinusoidal
Fuses:F1, F2 1.6 Amp, Littelfuse Part No. 21601.6,
or Wickmann Part No. 19194-053-FS
Enclosure: To be used inside a Digitrac2, Versatec or Ez-Trac enclosure
Climatic Class: 3K3 (EN60721)
Operating Temperature Range: 0°C to 40°C
Storage Temperature Range: -30°C to +80°C
Relative Humidity: 5% to 85%
Pollution Degree: 2 (IEC664-1)
Altitude: 0 to 2000 meters
Compatible Residual
Current Device Types: A or B (IEC755)
Worst Case Fault Current: 1/2 Amp
Control Input: Acquired from Digitrac2, Versatec or Ez-Trac
Output: -3-90 vdc, 1/8, 1/4, 1/2 amp selectable