Technical Instructions OpenAir™ GCA Series Spring Return 160 lb-in Electronic Damper Actuator
Document No. 155-173P25
May 19, 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.
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