4
3. OPERATION MODE
According to ČSN EN 60 034-1, actuators can be operated in S2 load category. The operation time at +50 °C shall
be 10 minutes, the mean load torque value shall be below or equal to 60 per cent of the maximum switch off moment
(Mv). According to ČSN EN 60 034-1, the actuators can also be operated in the S4 mode (interrupted operation with
acceleration intervals). The load factor N/N+R shall be maximum 25 per cent, the longest operation cycle N + R is
10 minutes (the course of load is shown in the picture). The maximum number of switching actions in automatic control
mode is 1200 actions per hour. The average mean load torque at load factor of 25 per cent and 50 °C shall not exceed
40 per cent of the maximum tripping torque (Mv).
The average mean load torque shall not exceed the nominal torque of the actuator.
Service life of actuators
Service life of actuators is 6 years, at the least.
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
4. TECHNICAL PARAMETERS
The basic technical parameters are given in Tab.1.
Supply voltage of electric motor:
1 x 230 V, +10 %, -15 %, 50 Hz ±2 %;
3 x 230/400 V, +10 %, -15 %, 50 Hz ±2 %;
1 x 220 V, +10 %, -15 %, 50 Hz +3 % -5 %;
3 x 220/380 V, +10 %, -15 %, 50 Hz +3 % -5 %;
(or as shown on the motor rating plate).
Type of protective enclosure:
MODACT MONJ, MODACT MON – IP 55
MODACT MOP – IP 67
Noise:
The maximum acoustic pressure level A is 85 dB (A).
The maximum acoustic power level A is 95 dB (A).
Cycle period
Course of working cycle
Operating time N
Idling time R
Mz
Starting torque ≥ 1,3 . Mv
Mstř
Average mean load toraque
Mv
Maximum mean tripping torque
Summary of Contents for MODACT MON 100/130-100
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