NV… Direct Coupled Globe Valve Actuator

NV… Direct Coupled Globe Valve Actuator
70396 Rev. C
®
NV… Direct Coupled Globe Valve Actuator
Non-spring return, on/off, floating point, proportional control
NV24-3 US
NVD24-3 US
NV24-MFT US
NVD24-MFT US
Application
For on/off, floating point and proportional control of globe
valves. Actuator will mate to an integrated adaptor bracket.
Adaptor bracket shown fits valves manufactured by Siebe
Environmental Controls under designations VB7000 and
VB9000.
Functional safety
The actuator is secured against short circuiting and incorrect
polarity. The stroke is adapted automatically and is overloadprotected.
On/Off, Floating Point Control, 24 VAC/DC Power
NV24-3 US, NVD24-3 US
Power consumption:
3W
Transformer sizing:
5 VA (Class 2 power source)
Force:
❏ NV24-3 US: 180 lbf [800N]
❏ NVD24-3 US: 90 lbf [400N]
Proportional Control, 24 VAC/DC Power
Features Multi-Function Technology® (MFT)
NV24-MFT US, NVD24-MFT US
Power consumption:
5W
Transformer sizing:
7 VA (Class 2 power source)
Operating range:
Default: 2 to 10 VDC, 4 to 20 mA
(w/500Ω, 1/4 W resistor)
Input impedance
100kΩ for 2 to 10 VDC
Feedback output ‘U’
Default: 2 to 10 VDC, 2 mA max
Force:
❏ NV24-MFT US: 180 lbf [800N]
❏ NVD24-MFT US: 90 lbf [400N]
Common Data
Power supply:
24 VAC ± 20% 50/60 Hz
24 VDC ±10%
Electrical connection: 3 ft, 18 GA appliance cable,
1/2” conduit fitting
Overload protection:
electronic throughout stroke
Maximum stroke:
3/4” [20 mm]
Position indication:
stroke indicator on bracket
Manual override:
3/16” hex, 5mm hex, phillips head
screwdriver
Running time:
150 secs. independent of stroke
(NV24-MFT US, NVD24-MFT US)
Actuating Time:
50s/.25”, [7.5s/mm]
(NV24-3US, NVD24-3 US)
Run time stability
± 5%
Humidity:
5 to 95% RH, noncondensing
Ambient temperature: -22° F to 122° F [-30° C to 50° C]
Media temperature:
20° F to 250° F [-7° C to 120° C]
Storage temperature: -40° F to 176° F [-40° C to 80° C]
Housing:
NEMA 2 / IP54 with cable entry down
Housing material:
UL 94-5V (flammability rating)
Agency listings:
CE, UL 873, CSA 4813 02
Quality standard:
ISO 9001
Noise level:
max. 35 dB(A)
Servicing:
maintenance free
Weight:
3.3 lb [1.5 kg]
Manual operation
When a 3/16” or 5 mm hex is inserted and turned clockwise,
the actuator plunger pushes out. The actuator plunger retains
the position until the nominal voltage is applied.
Display of function
The stroke is shown mechanically on the adaptor bracket, and
the maximum stroke is set automatically. Under the housing
cover on -MFT models is a two-colored LED status display.
Multi-Function Technology® (MFT)
An integrated microprocessor allows for a variety of
parameters to be easily configured at the factory or in the
field.
Dimensions in inches (numbers in brackets are metric)
1
®
NV… Direct Coupled Globe Valve Actuator
Non-spring return, on/off, floating point, proportional control
24 VAC Transformer
24 VAC
Transformer
Line
Volts
●
●
●
Blk
(1) Common –
Wht
(2) +
Wht
(3) +
extending
retracting
= actuator plunger extending
= actuator plunger retracting
NV24-3 US
NVD24-3 US
●
Line
Volts
(–)
2 to 10 VDC
Control Signal (+)
●
Line
Volts
● ●
●
1
2 to 10 VDC (–)
Feedback Signal (+)
(1) Common –
Red
(2) Hot +
Wht
(3) Y Input
Wht
(5) U Output
Control signal may be pulsed from either the Hot or
Common 24 VAC line.
Pulse width modulation control wiring
Range Available: 20 ms to 50 sec.
Typical: 0.59 to 2.93
0.02 to 5.00
0.10 to 25.5
(With default position of S3.2: 3-way Off, 2-way On.
See page 9.)
Blk
(1) Common
Red
(2) + Hot
●
Wht
(3) Y1 Input, 2 to 10 V
Wht
(5) U Output 2 to 10V
NVD24-MFT US
NV24-MFT US
MFT typical 2 to 10 VDC or 4 to 20 mA wiring (With
default position of S3.2: 3-way Off, 2-way On. See page 9.)
NVD24-MFT US
NV24-MFT US
1
Ω
● 500Ω
(–)
2 to 10 VDC
Feedback Signal (+)
Blk
(3) Y1 Input, 2 to 10 V
●
(–)
4 to 20 mA
Control Signal (+)
24 VAC Transformer
(2) + Hot
Wht
Wht (5) U Output 2 to 10V
NVD24-MFT US
NV24-MFT US
24 VAC
Transformer
Floating point or on/off control (With default position of
S1.2: Off. See page 10.)
(1) Common
Red
●
(–)
2 to 10 VDC
Feedback Signal (+)
Line
Volts
Blk
24 VAC Transformer
●
Line
Volts
Control Signal
1
(–)
(+)
Blk
(1) Common –
Red
(2) Hot +
Wht
Wht
(3) Y Input
(5) U Output
NVD24-MFT US
NV24-MFT US
1
The start point and end point can be adjusted to
sequence multiple actuators from one control signal.
Start point and stop adjustable wiring (With default
position of S3.2: 3-way Off, 2-way On. See page 9.)
2
®
NVF… Direct Coupled Globe Valve Actuator
Spring return fail safe, on/off, floating point, proportional control
NVFD24 US
NVFD24-E US
NVFD24-MFT US
NVFD24-MFT-E US
NVF24-MFT US
NVF24-MFT-E US
Application
For on/off, floating point and proportional control of globe
valves. Actuator will mate to an integrated adaptor bracket.
Adaptor bracket shown fits valves manufactured by Siebe
Environmental Controls under designations VB7000 and
VB9000.
On/Off, 24 VAC/DC Power
NVFD24 US, NVFD24-E US
Force:
90 lbf [400N]
Plunger:
❏ NVFD24 US (spring up)
❏ NVFD24-E US (spring down)
Floating/Proportional Control, 24 VAC/DC Power
Features Multi-Function Technology® (MFT)
NVFD24-MFT US, NVFD24-MFT-E US
Operating range:
2 to 10 VDC,
4 to 20 mA (w/500Ω, 1/4 W resistor)
Input impedance
100kΩ for 2 to 10 VDC
Feedback output ‘U’ 2 to 10 VDC, 2 mA max
Force:
90 lbf [400N]
Plunger:
❏ NVFD24-MFT US (spring up)
❏ NVFD24-MFT-E US (spring down)
NVF24-MFT US, NVF24-MFT-E US
Operating range:
2 to 10 VDC,
4 to 20 mA (w/500Ω, 1/4 W resistor)
Input impedance
100kΩ for 2 to 10 VDC
Feedback output ‘U’ 2 to 10 VDC, 2 mA max
Force:
180 lbf [800N]
Plunger:
❏ NVF24-MFT US (spring up)
❏ NVF24-MFT-E US (spring down)
Common Data
Power supply:
Power consumption:
Transformer sizing:
Electrical connection:
Overload protection:
Maximum stroke:
Position indication:
Manual override:
Running time:
24 VAC ± 20% 50/60 Hz, 24 VDC ±10%
5.5 W
10 VA (Class 2 power source)
3 ft, 18 GA appl. cable, 1/2” conduit fit.
electronic throughout stroke
3/4” [20 mm]
stroke indicator on bracket
3/16” hex, 5mm hex, phillips screwdriver
motor: 150 secs. independent of stroke
spring: 30 secs. at 3/4”[20mm] stroke
Run time stability
± 5%
Humidity:
5 to 95% RH, noncondensing
Ambient temperature: -22° F to 122° F [-30° C to 50° C]
Media temperature: 20° F to 250° F [-7° C to 120° C]
Storage temperature: -40° F to 176° F [-40° C to 80° C]
Housing:
NEMA 2 / IP54 with cable entry down
Housing material:
UL 94-5V (flammability rating)
Agency listings:
CE, UL 873, CSA 4813 02
Quality standard:
ISO 9001
Noise level:
max. 35 dB(A)
Servicing:
maintenance free
Weight:
4 lb [1.8 kg]
Functional safety
The actuator is secure against short circuiting and incorrect
polarity. The stroke is adapted automatically and is overloadprotected. The spring return function in the actuator is pretensioned when delivered. Pressing a 3/16” or 5 mm hex into
the housing cover releases the spring stop.
Manual operation
When a 3/16” or 5 mm hex is inserted, depressed and turned
clockwise, the actuator plunger pushes out. The actuator
plunger retains the position until the nominal voltage is
applied.
Display of function
The stroke is shown mechanically on the adaptor bracket, and
the maximum stroke is set automatically. Under the housing
cover on -MFT models is a two-colored LED display which will
verify that the actuator is set up properly.
Multi-Function Technology® (MFT)
An integrated microprocessor allows for a great variety of
parameters to be easily configured at the factory or in the
field.
Dimensions in inches (numbers in brackets are metric)
3
®
NVF… Direct Coupled Globe Valve Actuator
Spring return fail safe, on/off, floating point, proportional control
24 VAC
Transformer
24 VAC Transformer
Line
Volts
●
● ●
●
Red
(2) Hot +
(3) Y1 Input
● ●
●
1
2 to 10 VDC (–)
Feedback Signal (+)
Blk
(1) Common –
Red
(2) Hot +
Wht
(3) Y Input
Wht
(5) U Output
NVF24-MFT US
NVF24-MFT-E US
NVFD24-MFT US
NVFD24-MFT-E US
1
●
Control signal may be pulsed from either the Hot or
Common 24 VAC line.
(2) + Hot
Wht
(3) Y1 Input, 2 to 10 V
Ω
● 500Ω
Blk
(1) Common
Red
(2) + Hot
Wht
(3) Y1 Input, 2 to 10 V
Wht
(5) U Output 2 to 10V
●
(–)
4 to 20 mA
Control Signal (+)
●
(–)
2 to 10 VDC
Feedback Signal (+)
24 VAC Transformer
(1) Common
Red
Wht (5) U Output 2 to 10V
NVF24-MFT US
NVF24-MFT-E US
NVFD24-MFT US
NVFD24-MFT-E US
24 VAC
Transformer
Line
Volts
Blk
●
(5) U Output 2 to 10V
NVF24-MFT US
NVF24-MFT-E US
NVFD24-MFT US
NVFD24-MFT-E US
Floating point control (With default position of S3.2: 3way Off, 2-way On. See page 9.)
Line
Volts
(–)
2 to 10 VDC
Control Signal (+)
(–)
2 to 10 VDC
Feedback Signal (+)
Wht
Requires diode
●
Line
Volts
1
2 to 10 VDC
Feedback Signal
1
(1) Common –
Wht
● ●
●
Blk
NVF24-MFT US
NVF24-MFT-E US
NVFD24-MFT US
NVFD24-MFT-E US
MFT typical 2 to 10 VDC or 4 to 20 mA wiring (With default
position of S3.2: 3-way Off, 2-way On. See page 9.)
24 VAC Transformer
Line
Volts
●
●
●
Pulse width modulation control wiring (With default
position of S3.2: 3-way Off, 2-way On. See page 9.)
●
●
Blk
(1) Common –
Red
(2) Hot +
Wht
(3) Y1 Input
Wht
(5) (not used)
NVFD24 US
NVFD24-E US
24 VAC Transformer
Line
Volts
1
(–)
Control Signal (+)
(–)
Feedback (+)
●
Blk
(1) Common –
Red
(2) Hot +
Wht
(3) Y Input
Wht
(5) U Output
NVF24-MFT US
NVF24-MFT-E US
NVFD24-MFT US
NVFD24-MFT-E US
1
The start point and end point can be adjusted to
sequence multiple actuators from one control signal.
Start point and stop adjustable wiring (With default
position of S3.2: 3-way Off, 2-way On. See page 9.)
Spring return actuators model designation
NVFD24 US
NVFD24-MFT US
NVF24-MFT US
retracting plunger (spring up)
NVFD24-E US
NVFD24-MFT-E US
NVF24-MFT-E US
extending plunger (spring down)
4
On/off control–using actuator to drive open/close, spring
upon power loss. (With default position of S3.2: 3-way
Off, 2-way On. See page 9.)
24 VAC Transformer
Line
Volts
●
●
●
Blk
(1) Common –
Red
(2) Hot +
Wht
(3) Y1 Input
Wht
(5) (not used)
NVFD24 US
NVFD24-E US
On/off control–using actuator to drive one direction and
spring the opposite direction. Note: A bridge must be
made inside the NVF between terminals 2 and 3.
(With default position of S3.2: 3-way Off, 2-way On.
See page 9.)
®
G2 Series Globe Valve With NV… or NVF… Actuators
G2 Series Two-Way
Application
G2 Series two-way valves control water or steam for 2-position
or modulating control applications. Valves conform to ANSI
class 250 rating for screwed cast bronze bodies.
Actuators
A number of combinations are possible. Both spring return
(NVF…) and non-spring return actuators (NV…) are available.
Piping
The valve should be mounted in a weather-protected area in a
location that is within the ambient limits of the actuator. Allow
sufficient room for valve with actuator and for service. Allow 6”
for cover removal and 12” for complete actuator removal. The
assembly can be mounted with the actuator vertical or horizontal
in relation to the pipe. G2 series two-way “A” port is inlet, “AB”
port is outlet (Do not reverse flow direction).
Specifications
Service
Flow Characteristic
Action
Sizes
Type of End Fitting
Materials:
Body
Seat
Stem
Plug
Packing
Disc
ANSI Class
Leakage
Maximum Inlet
Pressure Steam
Media Temp. Range
Maximum Differential
Pressure
chilled or hot water, 50% glycol,
steam
equal percentage
stem up open A to AB
1/2” to 2”
NPT
bronze
bronze
stainless steel
brass
spring loaded TFE
EPDM
250 (up to 400 psi below 150°F)
Ansi IV Close-off
15 psi [103 kPa]
WARNING
These valves are not for combustible gas applications as leaks
and explosions could result.
Assembly Dimensions in inches
(numbers in brackets are metric)
20°F to 250°F [-7°C to 120°C]
water 35 psi [241 kPa]
steam 15 psi [103 kPa]
Note: The NV/NVF actuator cannot be used for 2-way steam applications above
15 psi inlet pressure. For inlet pressures between 15 psi and 35 psi, call Belimo
for standard G2 Series valve with another Belimo actuator. For steam
applications exceeding 35 psi, stainless steel trim must be used. Call Belimo
for pricing.
2-Way
Pipe Size
1/2” [15]
3/4” [20]
1” (25)
1-1/4” (32)
1-1/2” (40)
2” (50)
A
3-1/16” [78]
3-5/8” [92]
4-5/8” [117]
4-5/8” [117]
5-3/8” [137]
6-1/8” [156]
B
1-1/16” [27]
1-1/16” [27]
1-1/8” [29]
1-3/8” [35]
1-1/2” [38]
1-9/16” [40]
C
9-3/4” [248]
9-3/4” [248]
10-7/16” [265]
10-7/16” [265]
10-1/2” [267]
10-13/16” [275]
5
®
G3 Series Globe Valve With NV… or NVF… Actuators
G3 Series Three-Way (mixing)
Application
G3 Series three-way mixing valves control water for two position
or modulating control applications. Call Belimo for diverting
applications. Valves conform to ANSI class 250 rating for
screwed cast bronze bodies.
Actuators
A number of combinations are possible. Both spring return
(NVF…) and non-spring return actuators (NV…) are available.
Piping
The valve should be mounted in a weather-protected area in a
location that is within the ambient limits of the actuator. Allow
sufficient room for valve with actuator and for service. Allow 6”
for cover removal and 12” for complete actuator removal. The
assembly can be mounted with the actuator vertical or horizontal
in relation to the pipe. G3 series three-way: “A” port is inlet, “B”
port is bypass, “AB” port is outlet. (Do not reverse flow
direction).
WARNING
These valves are not for combustible gas applications as leaks
and explosions could result.
Specifications
Service
Flow Characteristic
Action
Sizes
Type of End Fitting
Materials:
Body
Seat
Stem
Plug
Packing
ANSI Class
Leakage
Media Temp. Range
Maximum Differential
Pressure
chilled or hot water, 50% glycol
linear - mixing only
stem up open port B to AB
1/2” to 2”
NPT
bronze
bronze
stainless steel
brass
spring loaded TFE
250 (up to 400 psi below 150°F)
Ansi III Close-off
20°F to 250°F [-7°C to 120°C]
water 35 psi [241 kPa]
Assembly Dimensions in inches
(numbers in brackets are metric)
3-Way
Pipe Size
1/2” [15]
3/4” [20]
1” (25)
1-1/4” (32)
1-1/2” (40)
2” (50)
6
A
3-1/16” [78]
3-5/8” [92]
4-5/8” [117]
4-5/8” [117]
5-3/8” [137]
6-1/8” [156]
B
1-3/8” [35]
1-11/16” [43]
1-9/16” [40]
1-5/8” [41]
1-5/8” [41]
1-7/8” [48]
C
9-3/4” [248]
9-3/4” [248]
9-13/16” [249]
10-1/16 [256]
9-3/16” [234]
9-1/4” [235]
®
7
Operation, Installation
Operation/Installation UNV-001 Series
Installation instructions for Siebe VB7000 and VB9000
series valves
Subject to change © Belimo Aircontrols (USA), Inc
Preparing the Valve
1. Remove all existing linkage and push stem to down position.
2. Screw lock nut (L) and stem adaptor (I) onto valve stem.
3. With stem pushed down completely adjust stem adaptor (I)
height for corresponding valve. Tighten lock nut (L). (See
Figure 1).
Stem
StemHeight
Height
Adjustment
See
Chart (page 6)
adaptor
Stemstem
Adaptor
(I)
lock-nut
Lock-Nut
(L)
valve
Valve Bonnet
bonnet
nut
Preparing the Actuator and Mounting
the Valve
1. Slide the black coupling lock (C) up
into the unlocked position. (See
Figure 3).
2. Attach it to the end of the actuator
plunger (K). This is done by pushing
the bottom of the coupling apart with
your thumbs while pressing it onto
the actuator plunger. (See Figure 5).
3. Attach bracket (E) onto bottom of NV
actuator (A) with 4 provided screws
(B).
4. Attach stroke indicators (G) above
and below the valve coupling.
5. Screw NV actuator (A) onto valve,
and tighten valve bonnet nut (J).
6. Lower plunger (K) using manual override until stem adaptor (I) meets
Fig. 5
valve coupling. When connected, the
valve stem adaptor will be captured
by the valve coupling.
7. Slide the coupling lock (C) down in to its locked position.
8. Move sliding stroke indicators (G) to sit above and below lip
on valve coupling (H). Stroke indicators are automatically
repositioned to the maximum stroke when power is applied
to actuator.
9. Set actuator switches S3.1, S3.2 to desired settings (See
attached data).
Fig. 1
Front of Actuator
A
B
K
H
G
C
I
E
Front of bracket
J
When disassembling, move the coupling lock (C) up to the
unlocked position and squeeze the sides of the coupling while
pulling the valve away from the coupling.
Fig. 2
Recommended installation location
It is permissible to install the NV actuator upright or horizontally.
However, it is not recommended that the valve stem be installed
facing downward. Allow 12 inches of clearance for removal of
actuator and 6 inches for removal of actuator cover.
H
Initial start-up
The unit must not be started up until the valve and actuator
have been assembled according to instructions. Adaptation
(initialization) will only occur the first time the actuator is powered. To reset, remove housing cover and press adaptation
button S2. (See attached set-up information).
K
Actuator
Plunger
C
Fig. 3
Front of
Actuator
Fig. 4
7
®
Operation, Installation
NV Series
Manual Override NV…Non-spring Return
Turn manual override counter-clockwise:
Actuator plunger retracts.
The valve coupling can be adjusted by inserting a 3/16” or 5 mm hex in the
housing cover. (Fig. 3).
Turn manual override clockwise:
Actuator plunger extends.
If the hex is turned clockwise, the coupling moves down; counterclockwise
turning moves it up. The manual override is protected against overload. The
coupling remains in the manual position as long as the actuator is not
connected to the nominal voltage. With the nominal voltage applied to the
actuator, the coupling follows the positioning signal.
3/16” or
5mm
hex
Fig. 3
Over-torquing manual override will not damage actuator.
Manual Override NVF…Spring Return
The valve coupling can be adjusted by inserting a 3/16” or 5 mm hex in the housing
cover. (Fig. 3).
The spring return function in the actuator is pre-tensioned when delivered.
The manual operating mechanism is overload-proof. The plunger will remain at
the manual setting until the power supply to the actuator is turned on or, the next
time the power supply is interrupted, it moves to whichever end position has been
selected.
NVF… Retracting, Spring Up
1 Disengaging manual operation
Turn the hex clockwise 45° until resistance is encountered. Then lift the key
approx. 1/4” [7 mm] until the black socket for the key is level with the top of the
housing cover. The spring mechanism will now rotate the key counter-clockwise
and the plunger will retract.
2 Manual operation
Turning the hex clockwise causes the plunger to extend to the required position.
3 Locking manual operation
Turn the hex 3/4 turn counter-clockwise and then press it down into the cover of
the housing (the black socket will move inwards approx. 1/4” [7 mm]). Slight
counter-clockwise rotation of the key will then lock the manual operating
mechanism in position.
Note: Do not trigger the spring mechanism and turn the manual operating
mechanism clockwise to the "spring-up" end position at the same time.
NVF…-E Extending, Spring Down
1 Disengaging manual operation
Turn the hex counter-clockwise 45° until resistance is encountered. Then lift the
key approx. 1/4” [7 mm] until the black socket for the key is level with the top of
the housing cover. The spring mechanism will now rotate the key clockwise, the
plunger will extend.
2 Manual operation
Turning the hex counter-clockwise causes the plunger to retract to the required
position.
3 Locking manual operation
Turn the hex back clockwise 3/4 turn and then press it down into the cover of the
housing (the black socket will move inwards approx. 1/4” [7 mm]). Slight clockwise
rotation of the key will then lock the manual operating mechanism in position.
8
NOTE: (For first production series only-through March 2001)
1. Do not override the NVF while power is applied to the actuator.
2. If the actuator is overridden while power is applied, remove
cover and perform manual adaptation function by pressing S2
button.
3. When overriding the actuator turn the hex 3/4 turn and
then press down to lock after the desired position is
found.This prevents the gear from over-tightening into an
end-position which would prevent the override
mechanism from unlocking automatically during power
up. If the manual override does not unlock automatically
during power-up you must unlock the actuator manually
with the hex.
4. Use the NV… MFT in only closed control loops.
NVF24-MFT US
1
3/16”
2
3
2
3
NVF24-MFT-E US
1
3/16”
®
Operation, Installation
NVD24-MFT US, NV24-MFT US, NVF… US
Block diagram: MFT and Spring Return Actuators
H1
S1
S2
Status
Test
Adaptation
S3
Value
On
EEPROM
rd
S3.1
3
ASIC
24V AC/DC (+)
2
MICROPROCESSOR
GND / OV (-)
1
X2
= Direct Acting
DRIVER
5
Signal (Y)
= Reverse Acting
1
µP
Feedback/Communication (U/MP)
2-10 VDC
gr
2
Off
S3.2
MOTOR
General
Beneath the cover of the actuator are
the terminals for the cable
connection, the S1 and S2 buttons,
S3 switch, and the LED status
display H1.
The setting signal is processed in
the microprocessor, and conveyed to
the motor via drivers. By setting the
slide switch S3 or pressing the
buttons S1 and S2, the actuator can
easily be configured on site to the
requirements, if there are changes
from the factory settings.
The NV and NVF actuators are
maintenance-free. The two-color
LED display is located beneath the
cover of the actuator. This display allows immediate recognition
of the functional state of the actuator. In addition, it permits
simple set-up if the factory settings need to be changed.
Operation of Switches/LED
The S1 button makes it simple to check the wiring and overall
functioning of the actuator. The first time voltage is applied,
the stroke is adapted automatically. Independently of this, an
adaptation can be repeated as necessary by pressing button
S2. The stroke direction can be adjusted to be reverse or
direct acting. Under the factory setting, the stroke increases
as the setting signal increases. Depending upon the type of
valve (NO/NC), the closing point (stroke = 0%) can be chosen
with the valve stem retracted or extended.
LED operating display H1
Green steady light
Actuator working properly
Green flashing light
Test run or adaptation with
synchronization in progress
Red steady light
Fault; repeat adaptation
Red flashing light
After power interruption (>2 sec.).
By the next closing movement the
valve will be automatically
synchronized in the chosen
closing point. The LED indicator
will change from a red flashing
into green steady light.
Alternating red/green light Master control system being
addressed and operation of the
adaptation button S2 in progress
Functional description
S1
Test
S2
S3
S3.1
S3.2
The valve performs full stroke at
maximum running time and checks
the adapted stroke.
Adaptation
The stroke effected (between the two
mechanical end-stops of the valve) is
acquired as 100% stroke and stored
in the microprocessor. The control
signal and running time are then
matched to this 100% stroke.
Setting the direction of stroke and selecting the
closing point
Direction of stroke The direction of stroke is inverted
in relation to the control signal
Off position
Control signal = 0%
(Default)
corresponding to 0% stroke
On position
Control signal = 100%
corresponding to 0% stroke
Selecting the
Closing point is with the actuator
closing point
plunger extended or retracted
Off position
Closing point is with the actuator
(3-way Default)
lifting plunger retracted
On position
Closing point is with the actuator
(2-way Default)
plunger extended
Only properly authorized and trained persons may change the settings of switch S3 and buttons S1 and S2.
9
®
Operation, Installation
NVD24-3 US, NV24-3 US
Block diagram: NV24-3 US, NVD24-3 US
NV24-3 US, NVD24-3 US
Beneath the cover of the actuator are
the terminals for the cable connection
and the S1 switch.
Rated voltage: 24 VAC/DC
GND / OV
1
24V AC/DC Y1
24V AC/DC Y2
2
S1 Valve
The floating point signal is processed
in the microprocessor and conveyed to
the motor.
Rectifier
3
S1.1
S1.2
Supply voltage is created by the
rectifier.
ASIC
MOTOR
The stroke direction can be reversed
with the switch S1.2 (On/Off is
indicated on switch). This defines if the
valve closes with the plunger up or
down. The direction of the plunger can
also be inverted by exchanging the
wires Y1 and Y2.
Functional description
S1
Setting the running times and selecting the valve
closing point
S1.1 Actuating time
Off position
50s/.25” [7.5s/mm]
(Default)
On position
Deactivated not used
S1.2 Selecting the
Valve closing point is with the
closing point
actuator plunger extended or
retracted
Off position
Valve closing point is with the
(3-way Default)
actuator lifting plunger retracted
On position
Valve closing point is with the
(2-way Default)
actuator plunger extended
Only properly authorized and trained persons may change the settings of switch S1.
Piping/Mounting Orientation
Assembly can be mounted
horizontally or vertically. Do not
install with actuator below pipe.
Mixing Valve
BV
Supply
B
Coil
Return
AB
A
Allow 6” clearance for
cover removal, 12” for
actuator/adaptor
bracket removal.
Note:
Do not cover adaptor bracket with
insulation material.
10
®
Operation, Installation
NV…MFT US
NVF…MFT US
NV24-3 US
S1.2
H1
S1
S2
S1.1
S3.1
S3.2
11
Notes
12
®
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