ZPA Pečky 52 030, Инструкция по монтажу

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Control units are differentiated by function as follows:
a) torque tripping unit
-12-
b) signalling unit -13-
c) resistance transmitter setting mechanism -14-
d) position transmitters – resistance tr. 2 x 100
Ω
with mechanical position indicator position indicator -15-
– current tr. 4 – 20 mA without position indicator -15a-
e) position unit -16-
f) heating element -17-
The above-stated units are universal for all sizes of MODACT MON, MOP, MONJ actuators.
Important notice:
Micro switches applied in the various units do not allow two voltages with varying values or phases to be connected
to the contacts of one micro switch. These micro switches can only be used as switches, interrupters or selectors for one
circuit.
Description and function of control units
a) Torque tripping unit (fig. 3)
- as an independent assembly unit, it consists of base plate 19, which carried micro switches 20 and at the same time
creates bearings for torque control shaft 22 and locking shaft 29.
Torque control shaft transfers motion of the floating worm from power gear, using segments 23 or 24 and
levers 45 or 46, to micro switches MZ or MO. Tripping torque value is adjusted by rotating the segments against
the tripping levers. To allow tripping torque setting outside the manufacturing plant, segments 23 are provided
with a scale providing individually for each actuator indications of points for setting up the maximum and
minimum torque. The set up torque is indicated by recesses in segments 27 or 28. Figures on the scale do not
give direct indication of the tripping torque. Increments on the scale only serve to provide a more accurate
division between the maximum and minimum torque levels, and thus to enable a more precise set-up of the
tripping torque outside the manufacturing plant if no loading bench is available. Segment 23 is intended for
“closing” direction, segment 24 for “opening” direction.
Micro switch diagram
Description:
19 – base plate
20 – micro switches MZ, MO
21 – adjuster
22 – torque control shaft
23 – top “closing” segment
24 – bottom “opening” segment
25 – locking “closing” screw
26 – locking “opening” screw
27 – bottom “closing” segment by recess
28 – bottom “opening” segment by recess
29 – locking shaft
44 – locking nut
46 – tripping “closing” lever
Numbers in circles correspond to terminal
numbers on the terminal board of the actuator.
Micro switches can be used only as single-cir-
cuit micro switches.
19 20 29 21 23 25 27
45 22 44 24 26 28
46
12
10
13
11
1
2
Fig. 3 - Torque tripping unit