•  ATM's motor driven phase shifters utilize DC motors with integrated, long life gear reductions ideal for High Reliability applications.

•  The unit will operate with a set DC voltage between 18-30VDC, commonly found in most systems or by a separate DC power supply. Motor speed will vary based on Voltage used. Maximum running current is 250mA & 600mA max starting.

•  To prevent motor damage, Micro switches are used to stop the motor at the minimum and maximum travel positions

•  Units are provided with 9 pin D Sub Male connectors allowing for control voltage, end point indication if desired and follower potentiometer. See connector pin-out.

•  These devices are best controlled by an external Double-Pole/Double-Throw (DPDT) switch or ATM optional control module .

•  Any one of ATM's Phase Shifters can be mounted to a motor drive.

•  For Motor Drive Option add –28 to any of the 30° , 60° ,90° , 180° or 360° phase shifters.                    Example: P1604 = P1604–28

The above photograph shows a P150 phase shifter mounted to a motor drive

Motor Drive Outline Drawings:  30° , 60° ,90° , 180° , 360°

Motor Characteristics:

1. Motor Control Voltage
Pins 2 and 7 of the nine pin D Sub male connector will have fixed DC voltage between 18-30 volts applied.  To increase pin 2 is + and pin 7 is -.  To reverse the direction 2 is - and 7 is +.  In both directions a stop is provided by means of Micro switches.

2. End Point Indicator *
The switch is also used to provide end point indication by means of pins 1 and 6 developing a voltage when the device has reached the maximum limit, (for 2+ and 7-). Pins will 3 and 8 will develop a voltage when a minimum limit is met. (for 2- and 7+). The developing voltage is equal to supply voltage used.

3. Follower Potentiometer **
A 10K Pot with an output proportional to the position of the motor drive mechanism is available at pins 4, 5, and 9.

Atm Optional Control Module:

An External Drive Module part number MCM-001 shown at right, is available for the motor drive as an optional accessory. It includes:
 
1.  Crisp tactile switches to control drive.
2.  Max/Min position indicator lights.
3.  Follower potentiometer terminals.
4.  Self-switching power supply with input of 120 VAC - 240VAC.*     
5.  6 Ft, 9 pin cable to interconnect the control box to the motor driven device.  

*If supplied power source is not used, an input of 18-30 VDC through the 9 pin connector may be substituted.