Idiomas disponibles
Idiomas disponibles
V10715
260W Panel mounted
260W Boxed IP20
260W Enclosed IP54
360W Panel mounted
360W Boxed IP20
360W Enclosed IP54
General description
These controllers have been designed for use with shunt wound and
permanent magnet d.c. motors.
260W model
Vin 240Vac
200Vdc
Vin 110Vac
100Vdc
Vin 240Vac
200Vdc
Vin 110Vac
100Vdc
Imax dc
1.3A
Form factor
1.05
Mains 20mm
HRC fuse
The rectification method employed is full wave
thyristors with smoothing.
The speed of the dc motor is controlled by the potentiometer using
a linear closed loop control with feedback signal from the armature
voltage, enabling the motor speed to be kept constant. The field
voltage is constant and the armature voltage varies with speed.
The minimum and maximum speeds are presettable by means of
the trimmer potentiometers mounted on the controllers printed
circuit board.
All versions incorporate a 20mm HRC quick blow fuse mounted on
the circuit board for protection of the controller.
In considering speed control of dc motors form factor of the armature
current is of major importance since the heating of the armature is
proportional to the square of the form factor.
I
2
R losses (FF)
2
Due to a very low form factor designed within these controllers very
little derating has to be applied to dc motors with a form factor of unity.
e.g. 38W motor with a form factor of 1 (unity). If the 260W controller is
used the the motor could be rated upto 34W (approximately from the
manufacturers data). e.g. 0.18kW motor with form factor 1.2.
If the 360W controller is used the the motor could be rated upto 0.15kW
(approximately from the manufacturers data).
Note: These are the only examples and manufacturers data should be
consulted in all cases.
Wiring and setting up
The controllers are supplied set for 200/240 50/60Hz (i.e. link 2-3
connected). To operate from 100/120V 50/60Hz, remove link 2-3 and
connect links 1-2 and 3-4 (figure 1).
Trimmer IR is set for average speed holding i.e. approximately plus or
minus 5%. To improve this adjust IR so that the motor speed does not
increase when maximum load is applied at minimum speed.
The unit has been set and tested for 50V - 360W model and 200V -
260W model but if adjustment is required, the following procedure
should be followed:-
1. Select output voltage using voltage selector link (figure 1) no link
gives 200V, link connected gives 50V Nominal.
2. Connect motor and controller (see diagram).
3. To adjust the high speed setting, the main speed potentiometer
should be set to maximum and the trimmer preset 'H' adjust the
speed required.
4. To adjust the low speed setting, the main speed potentiometer
should be set to minimum and the trimmer preset 'L' adjusted to the
speed required.
2
RS Stock No.
360W model
Armature voltage
200V or 50Vdc
50Vdc
Field voltage
220Vdc
100Vdc
2A(200V) 2.7A (50V)
1.2 (200V) 1.1 (50V)
3A
5A
1
Important: *The
244-2901
244-2917
418-3597
425-5210
425-5232
RS Components shall not be liable for any liability or loss of any nature (howsoever
caused and whether or not due to RS Components' negligence) which may result
419-1425
from the use of any information provided in RS technical literature.
RS part nos.
Before attempting to install or use this controller it is vital that all the
instructions and advisory comments are compiled with and fully
understood.
1)
This controller is a component part of a system and, as such,
does not on its own have to comply with the EMC directive.
Responsibility for EMC compliance rests with the manufacturer
of the complete product. Despite this, this controller has been
tested with a dc motor and an EMC filter is incorporated to
enable the system to comply with the above standard.
2)
Wiring instructions are shown in the drawing overleaf. The
supply must be connected to the 'L' and 'N' terminals on the
circuit board and the supply earth and motor earth connected to
the 'E' terminal. The motor leads must be separated from the
supply leads with the motor armature connected to 'AA' and also
/
controlled
2
in the case of shunt wound motors the field connected to 'FF'.
Leads to the motor, including the earth, should be not more than
300mm long and should be twisted together. No filter or
contactor should be connected between the controller and the
motor Loops can result in radio frequency emissions, as can any
variation in the wiring or earthing of the system.
3)
The main source of radio frequency emissions in this system is
the motor commutation. This is essentially random and highly
variable. This controller has been tested with Parvalux
180/220Vdc motors upto their continuous full load ratings and
Parvalux 60/90Vdc motors up to their continuous full load ratings
or 2.7 amps, whichever is the least.
4)
Changes in the method of earthing the system can alter the EMC
characteristics. For example, fastening the motor to a metal
frame or case can provide an alternative earth return by passing
the inbuilt filter. It is virtually impossible to generalise on the
solution in all cases.
controller
is
INSTANTANEOUS REVERSING. It is essential that the
motor is allowed to come to rest before the motor is
reversed. Alternatively, use 0-750w reversing controllers
RS stock nos 244-2642 or 244-2658.
**All controller connections are live with respect to the ac
supply and earth.
Advisory Notes
244-2901, 244-2917, 418-3597,
425-5210, 425-5232 and 419-1425
NOT
SUITABLE
FOR
