Antenna Motor Drive - Dawn CONTROL-1500A Manual

CONTROL-1500A Single Axis Antenna Controller

3.2.1 Antenna Motor Drive

The antenna actuator motor drive is interfaced to the controller via the connector J2, terminals
4 and 6, labeled AZ1 and AZ2, respectively. Do not make any connections to the connector J2
terminals labeled EL1 and EL2.
The conductors that interface the controller to the antenna actuator must be sized
appropriately so that sufficient voltage is supplied to the motors. The voltage supplied to the
motors will be the output voltage from the controller less the voltage drop caused by the
resistance of the wires.
The output voltage of the controller is a function of the current supplied to the motors. The
voltage drop in the wires connecting the controller to the antenna is determined by the wire
size, the wire length, and the current supplied to the motors.
Figure xx in the back of this manual shows the relationship between the controller output
voltage and load current.
The following tables show the separation between the controller and the antenna which will
result in 28 and 22 volts being applied to the antenna drive motors as a function of motor
current and wire gauge. The tables take into account the controller output loading and
resistive losses in the conductors.
Separation (in feet) between controller and antenna which will result in 28 volts being applied
to the motors:
Wire Size →
Motor Current ↓
2 amps
3 amps
4 amps
6 amps
8 amps
Separation (in feet) between controller and antenna which will result in 22 volts being applied
to the motors:
Wire Size →
Motor Current ↓
2 amps
3 amps
4 amps
DAWNco • 3340 S. Lapeer Rd • Orion, MI 48359-1320 • Ph (248) 391-9200 • Fax (248) 391-9207 • sales@DAWNco.com
16 AWG 14 AWG
600 950
340 520
220 340
90 140
30 40
16 AWG 14 AWG
970 1530
580 920
400 640
Chapter 3 Installation/Setup
12 AWG 10 AWG
1500 2410
830 1350
550 880
230 340
70 120
12 AWG 10 AWG
2430 3930
1460 2370
1020 1650
13