| PA-90 & PA-2 Power Amplifiers, 24 and 90 vdc |
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 The PA-90 and PA-2 Power Amplifiers are designed to provide the extra current required for controlling magnetic particle brakes and clutches in any tension control application. For use with DIGITRAC II , EZ-Trac, or VERSATEC, the PA-90 and PA-2 can be mounted inside the control's enclosure, and receives its control signals directly from the tension control. This unit also includes reverse current circuitry as a standard feature, thus allowing greater controllability in the lowest torque range of the clutch or brake being operated.
The PA-90 is used to control 90 VDC brakes and clutches only, while the PA-2 can be used to control either 24 or 90 VDC units. With 115 VAC input, either power amplifier will provide a 3.6 to 90 VDC, current regulated output to accurately control a 90 VDC brake or clutch. With a 24 VDC input, the PA-2 can also provide a 1.2 to 24 VDC, current regulated output to accurately control a 24 VDC unit.
Specifications:
PA-2: With 115 VAC input: -3.6 to 90 VDC, with selectable current ranges 1/8, 1/4, 1/2 amp maximum
With 24 VDC input: -1.2 to 24 VDC, with selectable current ranges 1/8, 1/4, 1/2, 1, 2 amp maximum
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General Specifications:
Input:
PA-90: 115 VAC ±10%, 50/60 Hz
PA-2: 115 vac+-10%, 50/60 Hz 24 vdc +-10%
Output:
PA-90 -3.6 to 90 VDC, with selectable current range 1/8, 1/4, 1/2 amp maximum.
More INFO-PA-90 & PA-2 (pdf)
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