RTA is a leading European manufacturer of bipolar chopper stepper motor drives for two phase hybrid 200 step/rev motors. Drives range from 0.75 Amp @ 24V upto 14 Amps @ 240V and are available in several mounting versions such as Eurorack, OEM and panel mounting (illustrated). The drives are available in resolutions selectable from the basic 200 step/rev (full step) to 12800 pulse/rev (microstep). They are designed for high reliability motion control in industrial environments and are backed by over 30 years experience in stepper motor drive design.

The drives are easily controlled by step and direction inputs from a computer or programmable logic controller. Applications include laboratory instrumentation, back stop positioning, CNC retrofitting, labelling machines, packaging machines, XY tables, pick & place and testing machines.

Our E.M.C statement applies to the installation of these products. At the time of web site publication, all RTA drives and SD stepper motors claim European CE and Australian C-tick (now called RCM) conformity. The CE compliance is important for machine manufacturers seeking clients in European countries.

The SD stepper motors are 2 phase hybrid motors which have been selected for optimum performance when used with RTA stepper drives. They can only be supplied with matching RTA drives. They are available in 17, 23, 34 and 42 frame sizes and are well suited to small to medium size machine automation applications. The 23 and 34 frame motors are supplied with 8 flying leads for high flexibility on drive connection. This enables the user to connect motors in parallel, series and unipolar configuration. The 42 frame motors have a terminal box and screw terminal connections. The 17 frame motors have 6 flying leads. SD stepper motors also have CE and C-tick approval.

The motors are nominally 200 steps/rev (1.8 degree steps), although our drives are also capable of running in half, quarter or ministep resolution providing 400, 800 and 4000 steps/rev. Depending on the electronic drive used, the steppers are capable of speeds from 0 to 3000 rpm, although torque is highly speed dependant. For further explanations and notes on stepper motor use see contact the office for our Stepper Motor Applications Guide. We are able to calculate motor torque required for a specific application and mechanics (see Motor Sizing Forms in Technical Notes for details). All stepper motor models are to be sold only as a sets with matching RTA stepper drives.