3.2 Description
RW motor gearboxes are drive units to operate systems in greenhouses, livestock houses, crop-
storage buildings and such. The RW motor-gearboxes are applicable at ambient temperatures
between 0 and 60 °C. RW motor-gearboxes have a self-braking worm-gear transmission which stops
the drive unit (worm shaft) when not operated and then locks the output shaft. To operate manually
(externally) is possible with (electric) tools and a hexagon socket in the shaft of the electric motor.
The RW motor-gearboxes (1-phase) have the linear RSU or RLS limit-switch system, with duty
switches and safety switches. 3-wire electric motors have thermal protection with a thermal-
overload protection-switch (PTO). RW motor-gearboxes are applicable to use intermittently (duty
class s3-35%) with a maximum duty cycle of 25 minutes. The optional PositioningUnit RPU monitors
the positions of the drive unit and transmits the data to the automatic control-system (ACS).
Position feedback is also possible with a mounting set with potentiometer. Operation is possible,
usually in automated systems, with a manual control (MC) and/or other control components.
The RW motor-gearboxes have connections (terminal blocks/connection blocks) to connect the
cables and are supplied with cable glands for the power cables and control cables. The gearbox
housing of the RW motor-gearbox has a powder-coating. RW motor-gearboxes are supplied with
fixing bolts and spring washers.
RW45 series
•
RW
45:
12-tooth 1⁄2”x5⁄16” zinc-plated sprockets for chain couplings
are installed.
Optionally
16-tooth 1⁄2”x5⁄16” sprockets are installed to
compensate for larger angle differences (to a maximum of 6°).
•
RW45
L:
Has a one-sided output shaft to install a belt drum or cable
drum.
•
RW45
TRA:
Has a one-sided output shaft to install a TRA520 rack-drive.
•
RW45
D:
An RW45 with a continuous worm-shaft.
Optionally
a
16-tooth 1⁄2”x5⁄16” zinc-plated sprocket for chain couplings is
installed.
The switching range of the limit-switch system is 55 or 97 revolutions of the drive shaft. The range is
related to different models.
RW240–600 series
•
RW
240/400/600:
16-tooth 5/8”x3/8” zinc-plated sprockets for chain
couplings are installed.
•
RW240/400/600
L:
Has a one-sided output shaft to install a belt drum
or cable drum.
•
RW240/400/600
TRA:
Has a one-sided output shaft to install a TRA520
rack-drive.
•
RW240/400/600
D:
An RW240/400/600 equipped with a continuous
worm-shaft.
Optionally
a 16-tooth 1⁄2”x5⁄16” zinc-plated sprocket for
chain couplings is installed.
The switching range of the limit-switch system is 86 revolutions of the drive shaft.
Ridder Drive Systems B.V.
T
+31 (0)341 416 854 -
F
+31 (0)341 416 611 -
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