Catalogues - global-valves

Catalogue Global Valves

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Wiring diagrams of NVF..

BELI MO

Wiring diagram of NVF24-MFT, NVF24-MFT-E

Symbols

Actuator supplier spindle moves

Emergency control function (optional with feedback U5)

o "5

Connection via safety isolating transformer

1 ~ AC 24 V _- + DC 24 V

3 o

tu a

a: ■g

aï

Y (DC 0...10 V)

from controller

NVF24-MFT(2)-E-T

S3.1

S3.2

NVF24-MFT(2)-T

U₅ (DC 2...10 V)

RETRACTING

EXTENDING

1) The position of the slide switch has no influence on the emergency control direction

k) No measuring voltages can be determined in the deenergized state


Lu	[2 [3 Li]	L5J	NVF24-MFT
1	~ Y/z Y2 +	U	NVF24-MFT-E

The actuator spindle moves to the end stop if the power supply manufacturers is interrupted. In the case of the NVF24-MFT(2)-T type, the actuator spindle retracts into the actuator housing (pulling). In the case of the NVF24-MFT(2)-T type, the actuator spindle extends from the actuator housing (pushing). The valve has either an NO (open when deenergized) or NC (closed when deenergized) function depending on its design (closing point up or down).

Influence of the actuator spindle on different valves (closing point selection)


Valve	Valve closing point	Closing point setting of linear actuator	Actuator spindle retracts	Actuator spindle extends
Valve	Valve closing point	Closing point setting of linear actuator	\|l Nvl ■u ¹	Ii N,\| u
M	Up	A	1 a Valve control path closing *JJ>*— (0% flow)	1 Valve control path _i_ " opening —^_\|_)— (100% flow)
M	Down	V	Valve control path ._L± opening —<_X_^— (100% flow)	Valve control path __t closing (0% flow)
	Up	A	a Valve control path closing *^JyJ—* (0% flow), —\^~/— bypass 100% open	^ Valve control path .--^ opening _>— (100% flow), —^j^-/— bypass 0% closed

c o

ca o

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