ZPA Pečky 52 030, Mounting Instructions

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17
Table for adjusting working stroke of resistance position transmitter
Once suitable gear ratio has been set up, adjust resistance transmitter as follows:
Due to the stepwise gear ratio of the signalling unit, the potentiometer traveller does not always move over the entire
range of the resistance path, but only in a part of it.
When adjusting the signalling unit to “open” and “closed” end positions as per point b), the resistance transmitter will
automatically be adjusted to a certain position.
Final adjustment of the transmitter is carried out as follows:
Set actuator output shaft to “closed” position. Then release screws on adaptors of transmitter so that the whole
transmitter can be turned. Afterwards, rotate the transmitter to adjust it to the lowest resistance value (approx. 4
Ω
, not
less) and re-tighten screws on adapters. When actuator is switched on, or while turning the hand wheel to “open” position,
resistance will start rising up to resistance value corresponding to “open” end position (50
Ω
to max. 98
Ω
) . Now the
transmitter has been adjusted.
Local position indicator
Local position indicator (fig. 8a) serves to
determine the approximate position of output shaft.
It is mechanically attached to cam shaft of signalling
unit pos. 49, and can detached. When setting up
cam shafts of signalling unit, the whole indicator
assembly must be removed after releasing fixing
screws pos. 48.
Position adjustment
First of all, position and signalling unit must be
adjusted as per point b) of Installation Manual. Once
this unit has been adjusted, attach indicator assembly
to cam shaft and adjust indicator according to the
following procedure: Set actuator output shaft to
“closed” position. When actuator is in this position, after
releasing screw pos. 47, set “closed” sign of bottom
indicator against signalling unit’s pillar, indicated on
figure 2a with bold print.
(The position of this pillar then
corresponds to the position of the sign on the eye sight
of the cover, once attached).
Tighten screw pos. 47
and move output shaft of actuator to “open” position. In
this position, use the same approach to adjust “open”
sign of the top indicator, again against the same
signalling unit pillar. While doing so, make sure not to
change the already set up position of bottom “closed”
indicator. After attaching the cover, check the accuracy
of signs setting against sign on eye sight, and adjust
position if necessary. Now the indicator has been
adjusted for both end positions.
I
A 0,5 - 1,1 1,2 - 2,5 0,9 - 1,8
B 0,9 - 1,9 2,3 - 4,6 1,7 - 3,4
II
A 1,7 - 3,5 4,0 - 8,2 3,1 - 6,4
B 3,2 - 6,4 7,7 - 15,4 5,9 - 11,7
III
A 5,8 - 11,7 13,8 - 27,7 10,6 - 21,4
B 10,4 - 20,8 25,6 - 51,3 19 - 38
IV
A 20 - 39,9 46,8 - 93,8 36,4 - 73
B 37,4 - 74,8 86 - 172,2 68,5 - 137
V
A 67,1 - 134,2 155,4 - 311,1 122,9 - 245,7
B 122,5 - 245,3 292 - 584,5 224,3 - 450
Serial number
Gear on
transmitter
Gear ratio
52030 52031 - 52032 52033 - 52035
Fig. 8a - Position indicator
Description:
43 – indicator shaft
44 – bottom “closing” indicator
45 – top “opening” indicator 46 – driving rubber collar
47 – locking screw
48 – fixing screw
49 – top cam with opening
46
43
48
47
44
45
49
46 47
45
44
43
48
49