ZPA Pecky, a.s. Modact MOKP 100 Ex Series, Руководство по сборке и эксплуатации

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Position regulator
The position regulator built-in in the actuator enables to control position of the output shaft of the actuator and thus
also the valve by the input analog signal.
The control unit is microprocessor-based programmed for regulating the actuator, ascertaining and repairing error
conditions, and for simple setting of regulation parameters.
The regulator design enables to switch off the regulator feeding. If the regulator is not under voltage it does not regulate
but, after its feeding is switched on, the regulator function is automatically restored; the parameters and diagnostic data
stored in the regulator memory are retained.
The regulator circuits compare the input signal with the feedback signal from the position transmitter of the actuator
output shaft. If there is a difference between the input and feedback signals the regulator closes one of the built-in
contactors in the actuator so that the actuator shaft is reset to the position corresponding to magnitude of the input signal.
When the feedback signal is equal to the input signal the actuator stops.
The control parameters are set by functional push-buttons on the regulator or by PC connected to the regulator via
a serial interface for the period of setting the parameters or during the communication module .
ELECTRIC PARAMETERS
External electric connection
The actuators have terminal boards for external connection. The terminal board has terminals for connection of one
1,5 mm
2
conductor or two conductors with the same cross-section 0,5 mm
2
each.
Connecting of actuators with connector – on special request.
Actuator internal wiring
The internal wiring diagrams of the
MODACT MOKP Ex
actuators with terminal designation are shown in this catalogue.
Each actuator is provided with its internal wiring diagram on the inner side of the actuator cover. The terminals are
marked on a self-adhesive label attached to a carrying strip under the terminal block.
Current rating and maximum voltage of microswitches
Maximum voltage of mikroswitches is 250 V AC as well as DC, at these maximum levels of currents.
MO, MZ
250 V AC / 2 A; 250 V DC / 0,2 A
SO, SZ 250 V AC / 2 A; 250 V DC / 0,2 A
PO, PZ 250 V AC / 2 A; 250 V DC / 0,2 A
The microswitches can only be used as single-circuit devices. Two voltages of different values and phases cannot be
connected to the terminals of the same microswitch.
Isolation resistance
Isolation resistance of electric control circuits against the frame and against each other is min. 20 M Ω . After
a dump test, isolation resistance of control circuits is min. 2 M
Ω
. See Technical specifications for more details.
Electric strength of electric circuits isolation
Circuit of resistance transmitter 500 V, 50 Hz
Circuit of current transmitter 50 V DC
Circuits of microswitches and anti-condensation heater 1 500 V, 50 Hz
Electric motor
Un = 1 x 230 V 1 500 V, 50 Hz
Un = 3 x 230/400 V 1 800 V, 50 Hz
Deviations of basic parameters
Tripping torque ±15 % of the maximum tripping torque
Operating time of the output shaft +10 %
of the rated value (in no-load operation)
-15 %
Hysteresis of position limit and signalling switches
(working travel) ≤4°
Adjustment of position limit and signalling switches ±1°
Clearance of the output part max. 1,5°
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