21
Pneumaticconnection
Single-acting actuators
- control function A or B
Connect working
connection A1 to actuator
Close A2
Connect working
connection A2 to actuator
Close A1
Fig. 10: Connection A1
Fig. 11: Connection A2
9.3.2 Double-acting actuators
Actuator system
Safety positions after failure of the
auxiliary power
pneumatic
auxiliary power
up
down
lower
chamber
upper
chamber
→
Connection
see “Fig. 12”
not defined
up = lower
chamber of the
actuator to A2
down = upper
chamber of the
actuator to A2
Control function I
Tab. 13: Safety positions - double-acting actuators
double-acting actuators -
control function I
Connect working
connection A1 and A2 to actuator
Safety position:
up = lower chamber to A2
down = upper chamber to A2
Fig. 12: Connection for SFI
english
Type EP 501 B
Содержание EP 501 B
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