ROWAN ELETTRONICA S.R.L. - Via Ugo Foscolo, 20 - 36030 CALDOGNO (VICENZA) ITALY
10
Static run:
When the single-phase motor is used in only one direction, and frequent run and
stop operations have to be performed, it is convenient to keep the power supply
electromagnet switch excited and to enable static motor rotation by opening contact
AR connectable to terminals 1-2.
- By opening contact AR, the motor follows the acceleration ramp up to the maximum
speed set and with a ramp time that is adjustable by trimmer P3.
- Closure of contact AR immediately removes voltage, zero-sets the ramp and
switches off RUN led L2.
If motor run/stop were necessary with acceleration and deceleration ramps without
immediately removing voltage from the motor in its stopping phase, perform the
following operations:
- disconnect terminal clamp 5 from the voltage reference to cause the motor to
decelerate to zero revs (or at a minimum speed calibrated with P5);
- connect terminal clamp 5 to the voltage reference to cause the motor to accelerate
to the maximum speed set.
Speed variations are conditioned by the acceleration/deceleration ramp set with
trimmer P3; the controlled deceleration ramp operates with motors applied to
braking loads or irreversible systems, but it is inefficient with inertial type loads.
STATIC RUN
TACHOMETER
GENERATOR
SPEED
REG.
