Data Sheet for Product

Technical Instructions OpenAir
®
GPC Series, Spring Return, 35 lb-in, Rotary, Electronic Damper Actuators
Document Number 155-782
February 26, 2019
Page 6 Siemens Industry, Inc.
DIP Switch
Functionality
GPC 161
NOTE: The black position indicates the active switch setting.
Description
Label
Description
Function
2 to 10 Vdc
0 to 10 Vdc
Control signal selection
Not In Use
Inverse Acting
Direct-Acting
Input signal inversion
Figure 5. DIP Switches.
Control Signal Selection
Selects the control and feedback signals
Input Signal Inversion
Allows inverting the control input signal
The arrow direction indicates opening or closing (closing or opening)
when operating an actuator with a given control signal.
= Direct acting (Factory setting)
Input signal 0 Vdc ► fail-safe position
= Inverse acting
Input signal 10 Vdc ► fail-safe position
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.