ON OTOMASYON - Schneider HVAC Valves and Actuators Catalogue - page 35

35
© 2011 Schneider Electric. All rights reserved.
Valve and Actuator Catalogue
Schneider Electric
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VACAT_July2011 July 2011
ao
Globe Valve Actuators
Standards
Emission
EN 61326-1
Immunity
EN 61326-1
Material
Housing
Aluminium
Cover
ABS/PC plastic
Colour
Red
Forta MG900 SR
Spring Return
Function
Part number
Type Designation
IP
Rating
Stem Up
MG900-SU MG900 SRU-24FM T54 00 54
Stem Down MG900-SD MG900 SRD-24FM T54 00 54
Stem Up
MG900-SU-65 MG900 SRU-24FM T65 00 65
Stem Down MG900-SD-65 MG900 SRD-24FM T65 00 65
Forta MG900 SR Accessories
Part number
Explanation
880 0104 000
S2 auxiliary end point switches
FYH50
Yoke Heater
MG900-SU-PCB
Circuit board for MG900 SRU
MG900-SD-PCB
Circuit board for MG900 SRD
880 0124 000
L2SV linkage kit to VZ and MZ Satchwell
Valves.
Forta MG900 SR
The Forta MG900 SR is a spring return actuator for the control of linear globe
valves. Units are available in IP54 and outdoor rooftop IP65 enclosures.
The Manual override is operated by a hex key retained in the cover. The manual
override can be locked into position for commissioning.
Regenerative Braking is used to Control the actuator closing speed when the
actuator is driven under the spring return force.
Supply voltage
24 V AC +25% / -30%, 50-60 Hz
Power consumption
Average 30 VA
Transformer sizing
50 VA
Spring return close off time at power failure
20 mm stroke
Less than 50 seconds
32 mm stroke
Less than 95 seconds
Stroke
9 to 32 mm
Thrust
900 N
Duty cycle
Max. 20%/60 minutes
(and 80%/ 60 min) for half load / amb. temp
Running time
Modulating 10 to 25 mm (0.39 to 1 in.)
15s
Modulating 25 to 32 mm (1 to 1.26 in.)
20s
Increase/decrease
300s/60s
Analogue input
Voltage
0-10V / 2-10V / 0-5V / 5-10 / 2-6 / 6-10
Impedance
Min. 100 k
Ω
Digital inputs VH–VC
Voltage across open input
24 V AC
Current through closed input
5 mA
Pulse time
Min. 20 ms
Output G1
Voltage
16 V DC / 20V DC ±0.3 V
Load
25 mA, short-circuit proof
Output Y
Voltage
2-10 V (0-100%)
Load
2 mA
Ambient temperature
Operation
-10 to 50 °C
Storage
-10 to 50 °C
Ambient humidity
Max. 90% RH
1...,25,26,27,28,29,30,31,32,33,34 36,37,38,39,40,41,42,43,44,45,...64
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