Burkert Type 2051 - Manual (Page 10)

10
System Description
schematic representation of control function a (B)
Connection 4 Connection 2
Counterclockwise rotation Fig. 2:
(Control function B: Clockwise rotation)
Control air on connection 2 moves the pistons in the direction of the
actuator covers, the springs are tensioned. Rotation is anti-clockwise.
Exhaust air via connection 4.
Connection 2 Connection 4
Clockwise rotation Fig. 3:
(Control function B: Counterclockwise rotation)
Pressure loss or compressed-air failure on connection 2 allows the
springs to move the pistons inwards. Rotation is clockwise. Exhaust
air via connection 2.
Control function i
Double-acting actuator; activation e.g. with pilot valve.
A
P
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Type 2051