Install Instructions

OpenAir GMA Series Spring Return, 62 lb-in, Rotary, Electronic Damper Actuators Technical Instructions
Document Number 155-315P25
March 6, 2018
Siemens Industry, Inc. Page 13
Wiring
All wiring must conform to NEC and local codes and regulations.
Use earth ground isolating step-down Class 2 transformers. Do not use autotransformers.
The maximum rating for a Class 2 step-down transformer is 100 VA. Determine the supply
transformer rating by summing the VA ratings of all actuators and all other components
used. It is recommended that one transformer power no more than 10 actuators (or 80% of
its VA).
WARNING:
Mixed switch operation is not permitted to the switching outputs of both auxiliary
switches (A and B).
Either AC line voltage from the same phase must be applied to all six outputs of
the dual auxiliary switches, or UL-Class 2 voltage (SELV for CE conformance)
must be applied to all six outputs.
NOTE: With Plenum cables only UL-Class 2 voltage (SELV for CE
conformance) is permitted.
WARNING:
Installations requiring Conformance:
• Except for the auxiliary switches (See Warning above) all wiring for
24 Vac/dc actuators must only be safety extra-low voltage (SELV) or
protective extra-low voltage (PELV) per HD384.
• Use safety transformers per EN61558 with double isolation, designed for
100% duty-cycle for supplying SELV or PELV circuits.
• Over-current protection for supply lines is maximum 10A.
Wire Designations
Each wire has the standard symbol printed on it. See Table 4.
Table 4. Wire Designations.
Applicable
Actuator
Standard
Symbol Function
Terminal
Designations
Color
24 Vac/dc
1 Supply (SP) G Red
2 Neutral (SN) G0 Black
6 Control signal clockwise Y1 Violet
7 Control signal counterclockwise Y2 Orange
8 Input signal: 0 to 10 Vdc (GMA16x) or 2 to 10 Vdc (GMA15x) Y Gray
9 Position output: 0 to 10 Vdc (GMA16x) or 2 to 10 Vdc (GMA15x) U Pink
120 Vac
3 Line L Black
4 Neutral N White
Auxiliary
Switches
S1
Switch A
−
Common
Q11 Gray/red
S2
Switch A
−
N.C.
Q12 Gray/blue
S3
Switch A
−
N.O.
Q14 Gray/pink
S4
Switch B
−
Common
Q21 Black/red
S5
Switch B
−
N.C.
Q22 Black/blue
S6
Switch B
−
N.O.
Q24 Black/pink
Position
Feedback
P1 Feedback Potentiometer 0 to 100% P1 - P2 a White/red
P2 Feedback Potentiometer Common b White/blue
P3 Feedback Potentiometer 100 to 0% P3 – P2 c White/pink