ZPA Pečky 52 030, Инструкция по монтажу

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Operating position
MODACT
®
MON, MOP, MONJ actuators filled with grease can be operated in any position. Actuators with grease
are identified with label stating “Filled with grease”, located on the power box on the hand wheel side.
Working position of actuators with oil filling is limited only by the inclination of electric motor axis – max. 15° below
horizontal line. This prevents possible clippings and impurities in oil bath from reducing the service life of electric motor
shaft seal.
In case of installation with electric motor above horizontal level, oil bath must be supplemented so as to secure
rmotor pinion’s reliable lubrication.
Actuators with oil bath are not identified by any label.
3. OPERATING MODE, ACTUATOR SERVICE LIFE
Operating mode
Actuators can operate with S2 load type as per ČSN EN 60 034-1; see course of load on diagram below. Period
of operation at +50 °C is 10 minutes and mean load torque value is maximally 60 percent of the maximum tripping
torque value.
Actuators may also work in interrupted operating mode with S4 start-up as per ČSN EN 60 034-1 (e.g. in case of
gradual valve opening action etc.) . Maximum number of switching actions at automatic regulation is 1,200 cycles
per hour with a load factor of 25 % (proportion of operating period to rest period 1:3). Mean load torque value
equals maximally to 40 percent of the maximum tripping torque. Longest operating cycle (N+R) is 10 minutes; load
factor (N/N+R) is maximally 25 %.
Maximum mean value of load torque equals to rated torque of actuator.
Actuators service life
Actuator intended for closing valves must be able to execute at least 10,000 operating cycles (Close - Open - Close).
Actuator intended for regulation purposes must execute at least 1 million cycles with operating period of (with
input shaft in motion) at least 250 hours. Service life in operating hours (h) depends on load and number of
switching operations. High frequency of switching operations may have a negative impact on regulation accuracy.
To achieve the longest possible fault-free service life, we recommend you to set switching frequency to the lowest
possible number necessary for the relevant process. Reference information on service life, derived from set-up
regulation parameters, is specified in the table below.
Actuators service life for 1 million starts
service life [h] 830 1,000 2,000 4,000
number of starts maximum number of
1,000 500 250
[1/h] starts1,200
Operating period N
Resting period R
Cycle time
Mz breakaway torque ≥ 1.3 Mv
Mstř mean value of load torque
Mv maximum value of tripping torque
Operating cycle course