Product Overview

OpenAir Spring Return 20 lb-in, Rotary GQD Series Electronic Damper Actuators Technical Instructions
Document Number 155-760
June 23, 2008
Siemens Building Technologies, Inc. Page 7
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:
Installations requiring
Conformance:
• 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 3.
Table 3. 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 (CW) Y1 Violet
7 Control signal counterclockwise (CCW) Y2 Orange
8 Input signal: 2 to 10 Vdc or 10 to 2 Vdc Y Gray
9 Position output: 2 to 10 Vdc U Pink
120 Vac
3 Supply L Black
4 Neutral N White