Technical data sheet Modulating linear actuator with emergency function for 2-way and 3-way globe valves • Actuating force 800 N • Nominal voltage AC/...
Technical data sheet Modulating linear actuator with emergency function for 2-way and 3-way globe valves • Actuating force 800 N • Nominal voltage AC/DC 24 V • Modulating control DC 0 ... 10 V • ������������������ Position feedback DC ������������� 2 ... 10 V • NVF24-MFT(-T) pulling NVF24-MFT-E(-T) pushing • NVF24-MFT(-E) with cable connection NVF24-MFT(-E)-T with terminal connection • Brackets and adapter sets for third-party valves as accessories (UNV-..)
o n ts
Technical data
c u d o r
Electrical data
P
Functional data
Safety
Dimensions / Weight
NVF24-MFT(-E)(-T)
r e g n lo
e l b a l i a v a
Nominal voltage Nominal voltage range Power consumption Operation For wire sizing Connection NVF24-MFT(-E) NVF24-MFT(-E)-T Parallel operation
AC 24 V, 50/60 Hz / DC 24 V AC 19.2 ... 28.8 V / DC 21.6 ... 28.8 V 5.5 W @ nominal force 10 VA Cable 1 m, 5 x 0.75 mm2 Terminal connection Yes (note performance data for supply!)
Actuating force Control Control signal Y Operating range Position feedback (measuring voltage U) Position accuracy Manual override Nominal stroke Running time Motor Spring return Emergency actuating time Sound power level Motor Spring return Position indication
800 N DC 0 … 10 V, input impedance 100 k� DC 2 … 10 V DC 2 … 10 V, max. 0.5 mA ±5% With hexagon socket screw key, temporary 20 mm 150 s 30 s 2 s). The valve is automatically synchronized at the selected closing point the next time it closes, and the LED indicator changes from a red flashing light to a green steady light. Addressing via the control system and operation of the adaptation pushbutton S2 in progress
T6-NVF24-MFT(-E)(-T) • en • v1.0 • 09.2010 • Subject to changes
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Y
NVF24-MFT(-E)(-T)
Modulating linear actuator with emergency function for globe valves, AC/DC 24 V, 800 N
Functions
(Continued)
H
Y
▲ ▼
o n ts
▲
H
c u d o r
OFF U
ON
Y
ON 1)
ON
!
H– H+
Y1
▼
OFF
▲
ON OFF
ON
ON
1) Measuring signal U according to position 2) If relay contact a or b is in switch position
X
X
OFF
0 0 1 0 1 0 1 0 1
1)
Measuring signal max. (e.g. U = 10 V)
0 1 0 1 0 1 0 1 0
Actuator spindle moves
1)
ccw
cw
stops
stops
X 2)
OFF
X 2) X 2)
ON ON
X 2)
ON
X 2)
OFF
X 2)
OFF OFF
X 2) X 2)
ON
1 for longer than the running time (150 s)
0 0 0 0
Measuring signal max. (e.g. U = 10 V)
Closing point down
Closing point up
Signal inverted
Control signal max. (e.g. Y = 10 V)
▼
1 1 1 1
Measuring signal min. (e.g. U = 2 V)
T
Y
S3.1 OFF ON OFF ON
Control signal min. (e.g. Y = 2 V)
▲
Signal direct
Closing point Valve
Direction of stroke
5
H
/5
OFF ON ON
A typical use for 100% override control is in a frost protection circuit. Whether or not the frost thermostat has to interrupt the signal conductor to the controller «d» depends on the make of controller being used (not necessary, if the signal output at the controller is short circuit proof and protected against polarity reversal).
U DC 2 ... 10 V
3
ON
X
Symbols
2
Measuring signal max. (e.g. U = 10 V)
Control signal max. (e.g. Y = 10 V)
X
Measuring signal min. (e.g. U = 2 V)
Closing point down
OFF
ON
▼
H–
1
X X
X
Relay contact (Y2)
OFF
S3.2
Y1
Y2
Y DC 0 ... 10 V
X
Relay contact (Y1)
▲
Closing point up
T
Y2
~
OFF OFF
X
X
U
S3.1 H+
Override control 100%
X
ON
X
X
OFF
ONY1)
X
X
Symbols
5
Note Only works with a nominal voltage of AC 24 V !
X
OFF
cw
The linear actuator must be accordingly parameterized and equipped with a 3-wire connector for 4-point applications.
