58
Schneider Electric
Telephone Europe: Malm
ö
, Sweden +46 40 38 68 50 Telephone Asia Pacific: Singapore +65 6776 3166
VACAT_July2011 July 2011
ao
© 2011 Schneider Electric. All rights reserved.
Valve and Actuator Catalogue
Damper Actuators
Part number
Type Designation
Torque
Nm Power Supply
Power Consumption
Control
Signal
In Operation At Rest
For wire sizing
MD20SR-T
MD20 SR-24/240T 1M54 00 20
24-240V AC / 24-125V DC 6.5W 3.3W 18VA
On/Off
MD20SR-TS
MD20 SR-24/240TS 1M54 00 20
24-240V AC / 24-125V DC 6.5W 3.3W 18VA
On/Off
MD20SR-24T
MD20 SR-24T 1M54 00
20
24V AC/DC
5W
2.5W 7.5VA
On/Off
MD20SR-24TS MD20 SR-24TS 1M54 00
20
24V AC/DC
5W
2.5W 7.5VA
On/Off
MD20SR-24M MD20 SR-24M 1M54 00
20
24V AC/DC
5W
3W 7VA
2-10V Mod.
For damper actuator accessories seepage 62.
Spindle Clamp
Damper Spindle Attachment
Spindle Length
Spindle Diameter
Spindle Diameter
Spindle Diameter
Clamp on Top
With Insert
≥85 mm
10 - 22mm
10 mm
14 - 25.4 mm
Without Insert
19 - 25.4 mm
12-18 mm
Clamp on Bottom
With Insert
≥15 mm
10 - 22mm
10 mm
14 - 25.4 mm
Without Insert
19-25.4mm
12-18mm
Motor Torque
Min. 20Nm @ Nominal Voltage
Spring Return
Min. 20Nm
Running Time, Motor
Modulating
≤
150 s
On/off
≤
75 s
Spring Return
≤
20 s
Control Signal, modulating
Range of Operation (X)
2-10V DC
Input Resistance
100 k
Ω
Position Feedback (Y)
2-10V DC, max 0.5mA
Position accuracy
+/- 5%
Cable Size
1m, 0.75mm
2
-24M,
4 x 0.75mm
2
-T,-24T
2 x 0.75mm
2
S2 versions
2+6 x 0.75mm
2
Direction of Rotation
Motor
Reversible with Switch I/O
Spring return
via mounting orientation, L / R
Manual Override
5mm Hex key crank, supplied
plus interlocking switch
Adjustable angle of rotation
0 to Max 95°
Position indication
Mechanical
Protection Class
24V versions
III Extra low Voltage
230V Versions
II Totally insulated
Degree of Protection
IP54
Ambient Temperature
Operation Temperature
-30°C to + 50°C
Storage (non operation)
-40°C to + 80°C
Sound power level
Motor
≤
40 dB (mod.)
≤
45dB (on/off)
Spring return
≤
62 dB
Service Life Min.60,000 emergency positions
Maintenance
Maintenance free
Weight
approx. 2.1Kg
Ambient Humidity
95% r.h. Non condensing
MD20 SR
The MD10 SR is a compact spring return damper
actuator for the operation of ventilation dampers up
to 4m
2
in building service installations
