ROWAN ELETTRONICA S.R.L. - Via Ugo Foscolo, 20 - 36030 CALDOGNO (VICENZA) ITALY
7
STANDARD SET-UP
119/92 drives come out of Rowan labs ready tested and set-up for:
- 4-pole motors with speed regulation by 3-wire potentiometer (min. 0 rpm - max. 1300 rpm);
- torque limitation not active;
- acc/dec ramp: 2 Sec.;
- S4 microswitch closed (all other microswitches open).
SINGLE-PHASE MOTORS CHARACTERISTICS AND POWER ABSORBED BY BRAKE AND COOLING FAN
The capacitor within parentheses increases starting torque by
approx. 20% but cannot be used for continual service; its use is
recommended only for intermittent movements.
The maximum current of Rowan single-phase motors is to be
calculated to an approximate value by multiplying the rated value
by 1.5. The same current can be used during the starting phase
or in cycles that require the use for a period equivalent to a
maximum of 20% of the entire work cycle.
INSTRUCTIONS FOR THE CONNECTION OF SINGLE PHASE ROWAN MOTORS
MOTOR SERVICE BOARD CONNECTION
1-2 TACHOMETER GENERATOR: from these terminals it is possible to have the
voltage of the tachometer generator that is spliced to the motor shaft. It supplies
a direct voltage of 20VDC at 2800RPM that is directly proportional to motor
speed; for this reason, besides being connected to the drive for speed control,
it can be used for analog revolution counters, display counters or other
servomechanisms, provided the overall loading being not lower than 5Kohm
(max tachometer current 5mA). It is always necessary, to avoid interferences,
to connect the tachometer with screened cable.
3-4 VENTILATOR: it is necessary to supply these terminals with 230VAC for the separated ventilation of motor; make sure
that this voltage is present also when the motor is not running, in order to guarantee the max cooling efficiency. As for the
power absorbed by cooling fans, see table on the previous page.
5-6 HEAT PROBE: it is a N.C. contact which opens when the temperature of motor windings exceeds 150°C, safety limit
corresponding to H class (180°C). It is used as emergency for the switching off of RUN remote control switch. The max
capacity of this contact is 1A - 230VAC. (Rowan motor MEC 63 0,15 HP is not equipped with Heat Probe; for this reason
terminals 5-6 are not present in its service terminal board).
SERVICE TERMINAL BOARD
POWER TERMINAL BOARD
LAUNCHING WINDING
POWER WINDING
TERMINALS OR CONNECTOR
FOR BRAKE CONNECTION
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TACHOMETER
GENERATOR
VENTILATOR
HEAT PROBE
