HP RC3000 manual Motor Drive

RC3000 Antenna Controller Chapter 2 Installation

2.2.2 Motor Drive

J7 is an MS3102A22-20S (Female on backpanel) connector, which terminates three motor cables. The minimum wire size for these cables is 16AWG.

The RC3000A is designed to drive 12 to 36 volt DC azimuth, elevation, and polarization motors. The absolute maximum allowed motor current is 12 Amps. The RC3000A employs a built-in, solid-state motor controller (model 25A8 from Advanced Motion Controls). The motor drive module supports IR compensation, current limiting, dual speed operation, and dynamic braking. The drive train is also protected with resettable fuses.

The RC3000B is designed to drive 90 volt (3/4 horsepower max) or 180 volt (1.5 horsepower max) DC azimuth and elevation motors. Ideally, 90 volt DC motors would be specified with 115 VAC input power and 180 volt DC motors with 230 VAC input power. 180 volt motors cannot be used with 115 VAC input power. The motor drive in the RC3000B is the model KBPB by KB Electronics . This motor drive supports IR compensation, current limiting, dual speed operation, and dynamic braking.

The polarization drive of the RC3000B is designed to power a 12 volt DC motor which draws less than 400 ma.

The following table describes the polarity of the RC3000’s motor drive output signals.

Axis	RC3000 Connector	Polarity
	J7 Terminals
Azimuth	G, F	Azimuth CW – G has higher potential
Elevation	H, J	Elevation UP – H has higher potential
Polarization	A, B	RC3000A:Polarization CW – B has higher potential
		RC3000B:Polarization CW – A has higher potential

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