17/44
Siemens
GMA..1 actuators with spring return
CM2Z4614en
Building Technologies
2018-01-11
The following regulations apply to these operating voltages:
Regulation
Operating voltage
∂
AC 24 V
∂
DC 24…48 V
The operating voltage must comply with the
requirements for SELV or PELV:
∂
Permissible deviation of AC 24 V nominal
voltage at the actuators: +/– 20 %.
∂
Permissible deviation of DC 24…48 V nominal
voltage at the actuators: +/– 20 %
Operating voltage
AC 230 V
Permissible deviation of AC 230 V nominal voltage
at the actuators: +/-10 %.
Specification on AC 24 V
transformers
Safety transformers as per EN 61558, with double
isolation, designed for 100 % runtime to supply
SELV or PELV circuits.
Determine the transformer’s power consumption by
adding up the power consumption in VA for all
actuators used.
The capacity used from the transformer should
amount to at least 50 % of the nominal load for
efficiency reasons (power efficiency).
The nominal capacity of the transformer must be at
least 25 VA. For smaller transformers, the ratio
between voltage at idle time to voltage at full load is
unsatisfactory (> + 20 %).
Specifications for
DC 24…48 V supply
Determine the supply by adding up the power
consumption in W for all actuators used.
Fuse of AC 24 V/DC 24…48 V
operating voltage
Transformers, secondary side or DC supply:
∂
According to the effective load of all connected
devices.
∂
Line G (system potential) must always be fused.
∂
Where required, additional line G0 (system
neutral).
Fuse of AC 230 V mains voltage
Transformers, primary side as per the applicable
installation regulations of the respective country.
4.2 Device-specific
regulations
Safety for the devices is ensured by (among other aspects):
∂
Supply of AC 24 V/DC 24…48 V extra-low voltage as per
SELV
or
PELV
.
∂
Double isolation between AC 230 V mains voltage and SELV/PELV circuits.
∂
Two-position and three-position actuators GMA32..1, GMA12..1, and GMA13..1:
Mount max. two actuators on the same damper shaft.
∂
Use the mounting bracket to secure the second actuator also (see accessories in
∂
Do not mechanically
connect modulating
GMA16..1
actuators.
Operating voltage
AC 24 V,
DC 24…48 V,
AC 230 V
Device safety
Mechanical parallel
connection of actuators