Hired-Hand RollSeal Sidewall System (Curtain): SideWall Curtain - Manual (Page 20)

Part No. 4801-5072 Rev 9-08 Side Wall Curtain Page 20
NOTE: Set Limit Switches After Curtain Installation
8.10.7 Ridder Limit Switches
The Ridder RSU30 limit switch system is a linear switch system
that has been developed for and used for RW45, RW240,
RW400, and RW200 geared motors. The limit switch system is
driven by the output shaft of the motor gearbox, by means of
transmission. Dependent on the type of geared motor, a number
of revolutions of the output shaft, between a starting and final
position, can be determined. Dependent on the type of geared
motor, this is 55, 86, 97, or 860 revolutions of the output shaft.
Working:
Of the Ridder RSU30 limit switch system, the threaded shaft (1)
is driven by the gear belt transmission or the screw wheel
transmission. In working situation the connection nuts (4) will
make a linear movement during the rotation of the threaded shaft.
One adjusting screw (a) will rest then against the switch spring
(6). When a final position is reached, the connection nut runs
against the stop and will turn with the threaded shaft. By this,
the switch spring is moved and a working switch (S11 or S12) is
operated. The electric signal, obtained from this, controls the
relay and the geared motor will stop. Should the relay or a
working switch refuse service, an emergency switch (S21 or S22)
will also be operated by the switch spring. The electric signal
obtained from this will control an emergency relay, so both the
steering and the geared motor will be disconnected. In this way
resultant damage to the drive system will be prevented.
Delivery:
A Ridder motor gearbox with RSU30 limit switch system will be
delivered with connection nuts (4) of which the adjusting rings
(3) are not fixed. This means that the drive unit can run in both
directions of rotation unrestricted. This also prevents that the
limit switch system - when it has not been connected yet -breaks
down at exceeding the (pre-) adjusted final positions when the
motor gearbox is operated by hand or electrically.
Connection: To connect the Ridder RSU30 limit switch system
we refer to the available electrical schemes.
Adjustment
The "starting" and "final position" are adjusted as follows:
1. By turning the outer shaft of the drive unit, bring the system in "starting" or "final position" and determine which working
switch S11 or S12 has to be operated. The switch direction of RSU30 limit switch system can be turned by changing
junctions 1 and 7 of the connector.
2. At the determined side, turn the knurling nut (2) "hand tight" against the stop. The knurling nut can be turned easily on the
threaded shaft (1) by hand. The connection nut (4) removes itself herewith as a whole along the threaded shaft.
3. Now turn the adjusting ring (3) over the knurling nut until the working switch is just connected.
4. Then tighten the adjusting ring with the adjusting screws (a and b) firmly on the knurling nut. Now the adjusting ring can not
be turned on the knurling nut anymore.
5. For adjusting the limit switch system in the opposite turn direction, repeat steps 1 though 4.
Herewith the limit switch system has been adjusted.
Figure 22
Warning!
If, with an adjusted RSU30 limit switch system, the geared motor is operated by hand, it has to be checked that the
adjusted FINAL POSITIONS OF THE SWITCH SYSTEM WILL NOT BE EXCEEDED. This can cause damage to the limit
switch system, as a result of which the limit switch system will not function well anymore.