ROWAN ELETTRONICA S.R.L. - Via Ugo Foscolo, 20 - 36030 CALDOGNO (VICENZA) ITALY
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DESCRIPTION OF TRIMMERS
P1 max torque limitation if adjusted counter-clockwise, it limits max voltage to motor windings (active with
microswitch S2 closed).
P2 minimum torque if adjusted clockwise, it increases min voltage to motor windings (active with microswitch
S2 closed).
P3 acceleration/deceleration ramp min 20 mSec, max 8 Sec.
P4 max speed regulates motor max speed with speed regulation potentiometer at maximum and in any case with
input on terminal 5 = +10VDC. Turned clockwise, it increases speed.
P5 min speed regulates motor min speed with speed regulation potentiometer at minimum and in any case with
input on terminal 5 = 0VDC. Turned clockwise, it increases speed.
P6 stability: to be regulated clockwise to stabilise any oscillations in the control of speed if regulation of trimmer
P7 was not sufficient (proportional / integral action).
P7 stability: to be regulated in a counter-clockwise direction to stabilise any oscillations in the control of speed
(integral action).
DESCRIPTION OF MICROSWITCHES
S1 open: activates external torque limitation from potentiometer or from 0+10VDC signal connected to terminal 3
closed: activates board internal torque limitation from trimmer P1
S2 open: cuts out torque limitation
closed: activates torque limitation
S3 open: in case of 3 wire speed regulation potentiometer connection
closed: in case of 2 wire speed regulation potentiometer connection
S4 open: in case of connection to 2 pole motor
closed: in case of connection to 4 pole (or 6 pole) motor. In case of 6 pole motor recalibrate maximum speed
with P4 until the tachogenerator generates a maximum voltage of 6 VDC.
S5 open: in case of maximum precision in controlling speed (minimum shift from loadless to loaded)
closed: enchances prompter response in speed change transients to the detriment of precision (greater shift
from loadless to loaded)
DESCRIPTION OF DISPLAYS
L1 POWER ON: indicates power supply flowing through the board and driving circuit.
L2 RUN: when on indicates that motor rotation has been enabled with the opening of run consent contact (AR)
at terminals 1 - 2. It illuminates in proportion to the voltage to motor windings.
L3 TACHOMETER GENERATOR PRESENCE: when on indicates that motor is rotating and that tachometer
generator voltage is available at terminals 7 -8. Tachometer generator voltage is directly proportional to motor
speed and assumes a value of approximately 20VDC at 2800 tpm.
