Commissioning Notes; General Checks; Electrical Function Check - Siemens OpenAir GMA 1 Series Technical Basics

References
Environmental conditions
Mechanical check
Electrical check
Rotary movement:
Two-position control
GMA12..1, GMA32..1
Rotary movement:
Three-position control
GMA13..1
Note
Siemens
Building Technologies
7

Commissioning notes

All information necessary for commissioning is contained in the following:
∂ This document ("Technical basics" Z4614en)
∂ Mounting instructions 74 319 0108 0 (M4614)
∂ HVAC plant diagram.
7.1

General checks

Check to ensure that all permissible values as contained in chapter 8 "Technical data"
are observed.
∂ Check for proper mounting and to ensure that all mechanical settings correspond to
the plant-specific requirements. Additionally, ensure that the dampers are shut tight
when in the closed position.
∂ Fasten the actuator securely to avoid side load.
∂ Check the rotary movement: Manually set the damper by turning the adapter using a
hex wrench, and lock the gear train as per the mounting instructions (only if no
voltage is applied).
∂ Check the unlocking mechanism of the gear train by turning the hex wrench in the
direction of 90°.
∂ Check to ensure that the cables are connected in accordance with the plant wiring
diagram.
∂ The operating voltage AC 24 V/DC 24...48 V (SELV/PELV) or AC 230 V must be
within the tolerance values.
7.2

Electrical function check

∂ When operating voltage is supplied, the actuator must turn from 0° to 90° (or to end
position for rotary angle limitation).
∂ After interrupting the operating voltage, the actuator must return to the zero position.
Check the actuator operating states as follows (see also chapter 9.3 Connection
diagrams (two-pos./three-pos.)).
Core connections
AC 24 V
1 – 6 (SN) / 2 – 6 (SP)
1 – 7 (SN) / 2 – 7 (SP)
1 – 6 / 1 – 7 or
2 – 6 / 2 – 7 open
After interrupting the operating voltage, the actuator must return to the zero
position.
Check the actuator operating states as per the truth table in chapter 9.3.
GMA..1 actuators with spring return
Rotary direction
DC 24...48 V
2 – 6 (SP) from 0°
2 – 7 (SP) from 90°
Actuator stays in position
2 – 6 / 2 – 7 open
reached.
⇑ 90°
⇑ 0°
CM2Z4614en
2018-01-11
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