21
Pneumaticconnection
Single-acting actuators
- control function A or B
Connection:
working connection A1
to actuator
A2 sealing
Connection:
working connection A2
to actuator
A1 sealing
Fig. 10: Connection A1
Fig. 11: Connection A2
13.1.2 Double-acting actuators
Actuator system
Safety end positions after failure of the
electrical
auxiliary power
pneumatic
auxiliary power
up
down
lower
chamber
upper
chamber
→
Connection
according to „Fig.
12“
not defined
up = lower chamber
of the actuator to A2
down = upper
chamber of the
actuator to A2
Control function I
Tab. 4: Safety end positions - double-acting actuators
Double-acting actuators -
Control function I
Connection:
Working connection A1 and A2
to actuator
Safety end position:
up = lower chamber to A2
down = upper chamber to A2
Fig. 12: Connection with CFI
english
Type EP 501
Summary of Contents for EP 501
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