3.2 Descripon
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 sha) when not operated and then locks the output sha. To operate manually
(externally) is possible with (electric) tools and a hexagon socket in the sha 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 protecon with a thermal-
overload protecon-switch (PTO). RW motor-gearboxes are applicable to use intermiently (duty
class s3-35%) with a maximum duty cycle of 25 minutes. The oponal PosioningUnit RPU monitors
the posions of the drive unit and transmits the data to the automac control-system (ACS).
Posion feedback is also possible with a mounng set with potenometer. Operaon is possible,
usually in automated systems, with a manual control (MC) and/or other control components.
The RW motor-gearboxes have connecons (terminal blocks/connecon 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-coang. RW motor-gearboxes are supplied with
xing bolts and spring washers.
RW45 series
• RW45: 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 dierences (to a maximum of 6°).
• RW45L: Has a one-sided output sha to install a belt drum or cable
drum.
• RW45TRA: Has a one-sided output sha to install a TRA520 rack-drive.
• RW45D: An RW45 with a connuous worm-sha. 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 revoluons of the drive sha. The range is
related to dierent models.
RW240–600 series
• RW240/400/600: 16-tooth 5/8”x3/8” zinc-plated sprockets for chain
couplings are installed.
• RW240/400/600L: Has a one-sided output sha to install a belt drum
or cable drum.
• RW240/400/600TRA: Has a one-sided output sha to install a TRA520
rack-drive.
• RW240/400/600D: An RW240/400/600 equipped with a connuous
worm-sha. 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 revoluons of the drive sha.
Ridder Drive Systems B.V.
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