User Manual

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Siem ens Technische Grundlagen: Drehantriebe GEB...1 CM2Z4621en
Building Technologies 2017-05-26
6.4 Actuator wiring (Modbus RTU)
The damper actuators are supplied with a prewired connecting and communication
cable. All interconnected devices must be connected to the same G0.
Strand code Strand color Terminal code Description
1 red (RD) G System potential AC 24 V
2 black (BK) G0 System neutral AC 24 V
6 violet (VT) REF Reference (Modbus RTU)
8 grey (GY) + Bus + (Modbus RTU)
9 pink (PK) - Bus - (Modbus RTU)
The operating voltage at terminals G and G0 must comply with the requirements under
SELV or PELV.
Safety transformers with twofold insulation as per EN 61558 required; they must be
designed to be on 100 % of the time.
7 Commissioning notes
All information necessary for commissioning is contained in the following:
∂ This document ("Technical basics" Z4621en).
∂ Mounting instructions 74 319 0109 0 (M4621).
∂ 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.
∂ Rotary movement check: Manually change the damper setting by pressing the gear
train disengagement button and turn the adapter (only if not voltage is applied).
∂ Check to ensure that the cables are connected in accordance with the plant wiring
diagram.
∂ The operating voltage AC 24 V (SELV/PELV) or AC 230 V must be within the
tolerance values.
Note
References
Environmental conditions
Mechanical check
Electrical check