Product Overview

Technical Instructions GBB/GIB Series NSR Rotary 24 Vac - Modulating Control
Document Number 155-176P25
December 15, 2004
Operation,
Continued
Control Signal
Adjustment Example
Open the actuator from 0% to 50% (45°) using a control signal of Umin = 2V to Umax= 10V.
Calculating the value of ∆U:
∆
U
100 [%] x (U max U min)
Working angle of rotation [%]
100% x (10V - 2V)
50%
16 V
=
−
=
=
Settings:
Uo = 2V; ∆U = 16V
Umin = minimum control signal
Umax = maximum control signal
100
0
∆U (16 V)
Y
U
(v)
Y
S
(%)
21810
U
min Umax
50
U
o
EA0412R1
Figure 15. Example.
Dual Auxiliary Switch GBB/GIB 164x, and GBB/GIB 166x
A
-2,5 0 10 20 30 70 80 90 92,5
B
0 10 20 30 70 80
EA0640R1
92,5 90 80 70
60
20 10
-2,5
90
0
Actuator Scale:
clockwise
Adjustment range for Switches A and B
Setting interval: 5°
Switching hysteresis: 2°
Actuator Scale:
counterclockwise
NOTE: The auxiliary switch setting shafts turn together with the actuator. The scales are
valid only when the actuator is in the "0" position on clockwise motion.
To change the settings of A and B, 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°
80
70
60
50
B
90
AUX
SWITCH
ADJ
20
30
40
10
20
40
A
70
EA0304R1
Figure 16. Dual Auxiliary Switch Dials.
Page 8 Siemens Building Technologies, Inc.