User Manual

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Siemens Actuators for fire and smoke protection dampers GRA126.1E/.., GRA326.1E/.. A6V10888424en
Building Technologies 2016-12-05
Engineering notes
The basic system data for the control systems in use contain all engineering notes.
Read all the engineering notes before mounting, wiring and commissioning the damper
actuator and pay special attention to all safety instructions.
These damper actuators must be used on applications as described in the basic
system data documents for the relevant control systems. Additionally, all actuator-
specific features and rules must be observed as described in the brief description on
the front page of this Data Sheet (bold print) and in "Use", "Engineering notes", and
"Technical data".
All paragraphs marked with the special warning triangle as illustrated on the left contain
additional safety instructions and limitations that must be observed under any circum-
stances to avoid physical injuries or damage to equipment.
These actuators must be used with safety extra low-voltage (SELV) or protection by
extra low-voltage (PELV) in accordance with HD 384.
The actuators are double-insulated and do not provide a connection for protective
ground.
Use either mains voltage or safety extra low-voltage for auxiliary switches “A” and
“B”. Do not mix the 2 for operation. Operation with different phases is not permitted.
Do not open the actuator!
The actuator is maintenance-free. Maintenance work may only be carried out by the
manufacturer.
Electric parallel connection of the same types of actuator is permitted provided
operating voltage is within the required tolerance. Voltage drops on the supply lines
must be taken into consideration
• Use safety isolating transformers with double insulation conforming to EN 60 742.
The transformers must be suited for 100 % duty
• Observe all local safety rules and regulations relating to the sizing and protection of
transformers
• Determine the transformer’s size by adding up the power consumption in VA of all
actuators used
Refer to "Commissioning notes" and "Internal diagram" as well as to the plant diagram.
Mounting notes
For detailed information on the correct preparation of the actuator, refer to Mounting
Instructions GRA…1E/.. A6V10890425. The actuator must be fitted to the fire and
smoke protection damper as specified by the OEM. Shaft adapter and other accessory
items come unassembled, since their assembly depends on the direction of rotation
and the length of the shaft (refer to “Technical design“).
In order to comply with the requirements of IP54 (temperature monitoring unit has
IP54), the following mounting conditions must be satisfied:
• Always mount the actuator vertically (cable entry at the bottom) in the case of air
dampers with horizontal shafts
• When the actuator is mounted directly on the damper shaft, the mounting angle may
be a maximum of +/–45°
If the actuator is mounted directly on the damper shaft, the mounting bracket / pin must
be used. The insertion depth for the shaft into the housing must be sufficient.
STOP
Correct use
Power supply
AC 24 V
DC 24…48 V
Power supply
AC 230 V
Auxiliary switches
“A”, “B”
Warning,
maintenance
Parallel connection
of actuators
Sizing transformers
for AC 24 V
Wiring and
commissioning
Mounting instructions
Housing protection
Mounting bracket /
pin