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Technical Instructions OpenAir™ GCA Series Spring Return 160 lb-in Electronic Damper Actuator

Document No. 155-173P25

December 11, 2014

Page 10 Siemens Industry, Inc.

Settings

Uo = 2Y; ∆U = 16V

Umin = minimum control signal

Umax = maximum control signal

Figure 15. Example.

Dual Auxiliary Switch

GCAxx4, GCAxx6

Actuator rotary range with the shaft

adapter mounted at position "0".

Setting range for switches A and B

Setting interval: 5°

Switching hysteresis: 2°

To change the settings of A and B:

1. Make sure the actuator is in the "0", fail-

safe position. The scale is valid only in

the "0" position.

2. Use a flat-blade screwdriver to turn the

switch adjustment dials to the desired

setting at which a signal is to be given.

Factory setting:

Switch A 5°

Switch B 85°

Figure 16. Dual Auxiliary Switch

Dials.

NOTE: For GCA15x actuators with signal inversion switch set to Inverse Acting,

90° corresponds to either a 0 to 10 Vdc or a 2 to 10 Vdc. Vdc input signal

depends on the input signal selection.

1 2 ... 5 6 7 8 9 10 11 12 13 14 15 ... 22 23

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