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Kieback&Peter · Spring-return actuator
MF100-SR-E
MF100-SR-E is the MF100-SR spring-return actuator, extending on power failure, with an auxiliary switch module for valve end position signalling.
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Part numberMF100-SR-E
Datasheet, PDF
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Specification
Electrical
- Power supply
- 24 V AC ±15%, 50/60 Hz, or 24 V DC ±15%
- Power consumption
- Rated 33 VA (AC), 23 W (DC); standby 2 to 5 VA (AC), 0.5 to 2 W (DC)
Environment
- Operating temperature
- 0 to 55 °C
- Humidity
- 0 to 95 % r.h., non-condensing
- Protection
- IP54 IP rating
- Protection class
- I (EN 60730)
Performance
- Control signal
- 0(2) to 10 V DC or 0(4) to 20 mA, invertible; 2-point; 3-point through the mode switch
- Output signal
- Position feedback 0(2) to 10 V DC or 0(4) to 20 mA, invertible
- Force
- 1000 N nominal
- Stroke
- Up to 20 mm, automatic stroke adaptation
- Fail-safe
- Spring return: spindle extends when power is lost
- Running time
- About 1 s/mm (as delivered) or 9 s/mm; emergency run about 1 s/mm
Physical
- Weight
- 2.90 kg
- Mounting
- Vertically above the valve up to horizontal
From the manufacturer's datasheet for MF100-SR-E.
Overview
The MF100-SR-E is an MF100-SR with an added auxiliary switch module. The module has two floating changeover contacts, rated 3 A at 250 V AC, to report that the valve is open or closed. The base actuator is 24 V AC or DC with 1000 N of force and a return spring that extends the spindle on power failure. It is used on RK15 to RK50/65K, RB15 to RB50, RF15 to RF50/65K, RGD15 to RGD40, RWG15 to RWG40 and RGDE25 to RGDE50 valves. Control is continuous 0(2) to 10 V or 0(4) to 20 mA, 2-point, or 3-point through the mode switch, and position feedback is returned as a voltage or current signal. The auxiliary switch makes it protection class I, so it must be earthed.