For remote or automatic positioning, the DIFF Series may be supplied with 120VAC or 240VAC synchronous motors. These motors have extremely rapid starting, stopping and reversing characteristics. Basic motor speed is 72 RPM, with available correction rates shown below. The correction rate must be selected upon order entry and is achieved through the use of a gearhead or timing belt assembly. The motors are provided with a separate capacitor and 1/2"-14 NPT wire entry.

The preferred method of motor mounting is shown in Illustration A (standard). The motor may be mounted to either the control knob side, or the lock side. No lock is provided when the control motor option is specified. The motor may also be mounted over the Differential using a motor mounting plate with a timing belt assembly stepping down to the control shaft as shown in Illustration B.