DS 3.230
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RM, RX, RE
4Nm
ROTARY ACTUATORS
These Satchwell actuators have a rotary output for direct coupling to
air dampers (up to approximately 0.8m2) in ventilation and air
conditioning systems.
The RX 7252 and RM 7652 are open/close actuators controlled by a
single wire or 2-wire system.
The RE 7352 is controlled by a standard 0-10Vdc signal and runs to
whatever position is specified by the signal. The purpose of measuring
voltage U (see wiring diagram) is to provide 0…100% electrical
indication of damper position and to act as a master-slave control
signal for other actuators.
FEATURES
• Simple direct mounting on the damper spindle by universal
spindle clamp. An anti-rotation device is supplied to prevent
unwanted rotation of the whole unit.
• Manual operation by self-resetting push-button when
necessary (the gearing is disengaged while the pushbutton is
held depressed).
• Adjustable angle of rotation with mechanical stops.
• High functional reliability. The actuator is overload proof,
needs no limit switches and halts automatically at the end
stops.
• Steplessly adjustable angle of rotation by integral
potentiometer. Range matching of the working range and
measuring signal U is performed automatically by the actuator
(RE 7352 only).
Notes:
Using Satchwell damper actuators
The actuators listed in this datasheet are intended for the operation of
air dampers in HVAC systems.
Torque requirements
When calculating the torque required to operate dampers, it is
essential to take into account all the data supplied by the damper
manufacturer concerning cross sectional area, design, mounting and
air flow conditions.
Multi-Lingual Instructions
MLI 3.230 - Installation Instructions
DS 3.230
2-4
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SPECIFICATIONS
TYPE
ACTION
NOMINAL VOLTAGE
NOMINAL VOLTAGE RANGE
FOR WIRE SIZING
POWER CONSUMPTION
CONNECTING CABLE
RX 7252
RE 7352
RM 7652
Open/Close actuator with single
wire or two wire control
Modulating actuator
Open/Close actuators with single
pole contact (single wire) control
24Vac 50/60Hz, 24Vdc
24Vac 50/60Hz, 24Vdc
230Vac 50/60Hz
19.2...28.8Vac, 21.6...28.8Vdc
19.2...28.8Vac, 21.6...26.4Vdc
198...264Vac
3VA
4VA
12VA
2W
2W
1W
1m long, 3 x 0.75mm2
1m long, 4 x 0.75mm2
1m long, 3 x 0.75mm2
CONTROL SIGNAL Y
-
0-10Vdc @ 100kΩ input resistance
-
OPERATING RANGE
-
2-10Vdc (for set ∠ of rotation)
-
MEASURING VOLTAGE U
-
2-10Vdc @ ≤0.5mA (for set ∠ of
rotation)
-
SYNCHRONISM TOLERANCE
-
5%
-
Selected with L/R switch
Selected with L/R switch
(at switch position
L
resp. R
)
Selected by L/R switch
DIRECTION OF ROTATION
(at Y = 0V)
MANUAL OPERATION
TORQUE
ANGLE OF ROTATION
RUNNING TIME
SOUND POWER LEVEL
SERVICE LIFE
POSITION INDICATION
PROTECTION CLASS
DEGREE OF PROTECTION
AMBIENT TEMP LIMITS:
NON OPERATING TEMP:
HUMIDITY TEST:
EMC
MAINTENANCE
WEIGHT
Pushbutton, self-resetting
Pushbutton, self-resetting
Pushbutton, self-resetting
Min. 4Nm (at rated voltage)
Min. 4Nm (at rated voltage)
Min. 4Nm (at rated voltage)
Max. 95° (adjustable by
mechanical stops)
Max. 95° (adjustable
with potentiometer 20...100%)
Max. 95° (adjustable by
mechanical stops)
80...110s (0...4Nm)
80...110s for
95° (0...4Nm)
80...110s (0...4Nm)
Max. 35dB (A)
Max. 35dB (A)
Max. 35dB (A)
Min. 60,000 operations
Min. 60,000 operations
Min. 60,000 operations
mechanical
mechanical
mechanical
(safety low voltage)
(safety low voltage)
(all insulated)
IP 54 (cable entry down)
IP 54 (cable entry down)
IP 54 (cable entry down)
–30...+50°C
–40...+80°C
to EN 60335-1
–30...+50°C
–40...+80°C
to EN 60335-1
–30...+50°C
–40...+80°C
to EN 60335-1
CE according to 89/336/EEC and
92/31/EEC
CE according to 89/336/EEC and
92/31/EEC
CE according to 89/336/EEC and
92/31/EEC
Maintenance-free
Maintenance-free
Maintenance-free
650g
620g
650g
OPERATION
RM/RX/RE
The direction of rotation of is selected by means of a switch on the
actuator.
RE ONLY
The actuator is controlled by a standard 0-10Vdc signal and runs to
whatever position is specified by the signal. The purpose of measuring
voltage U (see wiring diagram) is to provide 0…100% electrical
indication of damper position and to act as a master-slave control
signal for other actuators.
INSTALLATION
See MLI 3.230. The actuator is fitted directly to the damper and the
universal spindle clamp tightened securely to the damper shaft. An
anti-rotation device is supplied with each actuator and must be fitted to
prevent rotation during operation.
The angular stroke of the actuator is mechanically limited to 95°; it will
stall against end stops and is protected against overloading.
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3-4
DS 3.230
CONNECTION DIAGRAMS
RM 7652
To isolate from the main power supply, the system must
incorporate a device which disconnects the phase
conductors (with at least a 3 mm contact gap).
230Vac
230Vac
RM 7652
Parallel connection of several actuators possible.
Power consumption must be observed.
RX 7252
Connect via
safety isolating
transformer
24Vac
24Vdc
Parallel connection of
several actuators is
possible. Power
consumption must be
observed.
RX 7252
RE 7352
24Vac
24Vdc
Connect via safety
isolating transformer
0-10Vdc
Controller output signal
2-10Vdc
Measuring voltage U for position indicating or as
master-slave control signal.
of set angle
Reversing
switch
Open
Closed
anticlockwise-closing
damper
RE 7352
Parallel connection of several actuators
is possible. Power consumption must
be observed.
WIRING PRECAUTIONS
Actuator
Type
Wiring from
Actuator to
Controllera:
RX
RM
Supply
RE
24V~ supply
0-10Vdc signal
a
Reversing
switch
Open
Closed
clockwiseclosing
damper
Use an isolator with a minimum contact gap of 3mm (conforming
to EN 60335-1) to isolate the RM from the mains supply.
Max. length of
1.5mm² cable
unscreened
100m
Max.
resistance per
conductor
5Ω
RX and RE must be connected to 24Vac via a safety transformer
conforming to EN 60742.
MAINTENANCE
A periodic check of the control system is recommended.
100m
100m
3Ω
50Ω
When wiring to BAS outstations refer to the appropriate outstation data
sheet for the wiring precautions.
For longer lengths of 24 Volt supply wiring, increase cable size
and observe maximum resistance.
Where screening is required, use either screened cable, or MICC.
WARNING RM MODULES ARE AT MAINS POTENTIAL. OBSERVE LOCAL
WIRING REGULATIONS, EARTHING REQUIREMENTS AND ALL
USUAL SAFETY PRECAUTIONS.
DS 3.230
4-4
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DIMENSION DRAWING
Satchwell Control Systems Limited
Farnham Road
Slough
Berkshire SL1 4UH
United Kingdom
Telephone +44 (0)1753 611000
Facsimile +44 (0)1753 611001
Web site
www.satchwell.com
WARNINGS CERTAIN MODELS ARE AT MAINS POTENTIAL. LOCAL WIRING
REGULATION AND USUAL SAFETY PRECAUTIONS MUST BE
OBSERVED. NOTE EARTHING REQUIREMENTS.
THESE ACTUATORS ARE NOT SAFETY DEVICES AND SHOULD NOT
BE USED ON FIRE DAMPERS.
Cautions
• Do not apply any voltages until a qualified technician has checked
the system and the commissioning procedures have been
completed.
• RX and RE must be connected to 24Vac via a safety transformer
conforming to EN 60742.
• Use an isolator with a minimum contact gap of 3mm (conforming to
EN 60335-1) to isolate the RMS from the mains supply.
• Ensure wires are not inadvertently crossed over.
• Check torque requirements of damper (or other device) to be driven.
Do not exceed rated output torque.
• Interference with those parts under sealed covers renders the
guarantee void.
• Design and performance of Satchwell equipment are subject to
continual improvement and therefore liable to alteration without
notice.
• Information is given for guidance only and Satchwell do not accept
responsibility for the selection or installation of its products unless
information has been given by the Company in writing relating to a
specific applications.
• A periodic system check of the control system is recommended.
Please contact your local Satchwell service office for details.
© 2000 Satchwell Control Systems Limited (revised June 2000)
All rights reserved. Unauthorised copying of any part of the contents is prohibited.
Printed in England. 06/00