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

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OPERATION MODE, SERVICE LIFE OF ACTUATORS
Operation mode
The actuators can be operated with the type of loading S2 according to ČSN EN 60 034-1. The run period at temperature
+50 °C is 10 minutes; the mean value of loading torque should not exceed 60 % of the value of maximum tripping torque Mv.
The actuators can also work in the regime S4
(interrupted run with start-up) according to ČSN EN 60 034-1. Load factor
N/N+R is max. 25 %; the longest working cycle (N+R) is 10 minutes (course of working cycle is shown in the figure). The
highest number of closing operations in automatic regulation is 1200 cycles per hour. Mean value of loading torque with load
factor 25 % and surrounding tempe50 °C is not higher than 40 % of maximum tripping torque Mv.
The highest mean value of loading torque is equal to rated torque of the actuator.
Service life of actuators
The actuator intended for shut-off valves must be able to perform at least 10,000 operating cycles (C - O - C).
The actuator intended for regulating purposes must be able to perform at least 1 million cycles with operation time (during
which the output shaft is moving) at least 250 hours. Service life in operating hours (h) depends on load and number of switching.
Not always, high frequency of switching influences positively accuracy of regulation. For attaining the longest possible faultless
period and service life, frequency of switching is recommended to be set to the lowest number of switching necessary for the given
process. Orientation data of service life derived from the set regulation parameters are shown in the following table.
Service life of actuators for 1 million starts
Service life [h] 830 1 000 2 000 4 000
Number of starts [1/h] Max. number of starts 1200 1 000 500 250
TECHNICAL DATA
Supply voltage
– rated value of alternating electric voltage is 1 x 230 V or 3 x 230/400 V (according to version);
– permitted deviation of feeding voltage is -10 % to + 6 % of rated value;
– rated frequency of feeding voltage is 50 Hz;
– permitted deviation of frequency of feeding voltage is ±2 % of rated value.
In this range of feeding voltage, rated values of all parameters are maintained, except for starting torque that changes
with the second power of deviation of feeding voltage from its rated value. The change is directly proportional to
the change in feeding voltage. Larger deviations of feeding voltage and frequency are not permitted.
Protective enclosure
Protective enclosure of actuators
MODACT MOKP Ex
IP 67 according to ČSN EN 60 529 (33 0330).
Noise
Level of acoustic pressure A max. 85 dB (A)
Level of acoustic output A max. 95 dB (A)
Run time N Idle time R
Cycle time
Course of working cycle
Mz starting torque ≥ 1,3 . Mv
Mstř mean value of loading torque
Mv maximum value of tripping torque