Data sheet
Actuator for modulating & 3-point control
AME 685 – without safety function
Description
The actuator is designed to control the valve in
response to the demand of a controller in District
Heating/cooling, Heating, Ventilating and Air
conditioning systems.
The AME 685 can be controlled by electronic
controllers with modulating or 3-point control
output.
Actuator can be used in combination with:
Valve type VF 3 (DN 200-300)
Features:
•
Manual operation mechanical and/or electrical
• Position indication, LED signalization
• Selectable speed 2,7 or 6 s/mm
• Automatic adaptation of stroke to valve’s end
positions that reduces commissioning time
(self stroking)
• Integrated auxiliary switch
• Characteristic optimization
• Adjustable stroke limitation
• Anti-oscillation function
• Pulse or continuous output signal (4 & 5)
• Voltage or current output signal X
• External reset button
• Auto detection of Y signal
• 3-point or modulating control selection
• Galvanic insulation Y & X and output terminal
(4 & 5)
• Thermal and overload protection
• Precise control and fast response in 3-point
mode (0,01 s)
Main data:
• Nominal voltage (AC or DC ):
- 24 V, 50 Hz/60 Hz
- 230 V, 50 Hz/60 Hz
• Control input signal: modulating or 3-point
• Force: 5000 N
• Stroke: 80 mm
• Speed (selectable): 2,7 or 6 s/mm
• Max. medium temperature: 200 °C
Ordering
© Danfoss | 2016.04
Actuator
Picture
Typ e
AME 685
Power supply
(V)
24 082G3500
230 082G3501
Code No.
Accessories - Stem heater
Typ e DN Code No.
Stem heater for VF3 valve 200-300 065Z7021
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Data sheet AME 685
Technical data
Please check power supply
and power consumption
prior connection!
Power supply V 24 or 230; +10 … 15 %; AC or DC
Power consumption VA
Signal mA 10
Frequency Hz 50/60
V 0-10 (2-10) [Ri = 100 k ]
Control input Y
Control output X
Closing force N 5000
Max. stroke mm 80
Speed (selectable) s/mm 2,7 or 6
Max. medium temperature
Ambient temperature 0 … + 55
Storage and transport temperature −40 … +70 (storing for 3 days)
Humidity 5-95%
Protection class II
Grade of enclosure IP 54
Weight kg 7,5
Manual operation Electrical and mechanical
Power failure response Stem remains in last position
- marking in accordance with the
standards
mA 0-20 (4-20) [Ri = 500 ]
3-point (wiring auto-detection)
V 0-10 (2-10) [Ri = 2 k ]
mA 0-20 (4-20) [Ri = 550 ]
°C
Low Voltage Directive 20 06/95/EEC
EMC Directive 2004/108/EEC
35 (24 V)
50 (230 V)
200
Disposal Before disassembly please contact Danfoss
The actuator must be dismantled and the
elements sorted into various material groups
support for disassembly instructions.
before disposal.
Commissioning
Complete the mechanical and electrical
installation (see instructions) and perform the
necessary checks and tests:
- Turn on the power
- Set the appropriate control signal and check
that the valve stem direction is correct for
the application.
The unit is now fully commissioned.
Design
1. Manual operation knob
2. Function buttons
3. Service cover
4. Removable gland support
5. End position indication ring
6. Stem connector
7. Valve connector (yoke)
①
②
③
④
⑤
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⑥
⑦
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Data sheet AME 685
Installation
Wiring
Do not touch anything on the PCB!
Do not remove the ser vice cover
before the power supply is fully
switched off.
Max. allowed current output on
terminals 4 and 5 is 4A .
Min. power is 3W.
Recommended cross-sectional
area of the wiring is 1.5 mm
2
Mechanical
Please check the allowed installation positions
for the valve and actuator. The actuator can be
installed in following positions (see below).
AME 685 wiring for modulating mode
Note: see signal load data at f ix power supply
CONTROLLER
24V
230V
AME 685
DIP 6 OFF (1a, 1b)
DIP 6 ON (2a, 2b)
Use hook spanner NH10 key (not supplied) to
fit the actuator to the valve body. Allow for
necessary clearance for maintenance purposes.
To link valve and actuator stems use a 20 mm
wrench key and 5 mm Allen key (not supplied).
The actuator has position indication rings which
should be pushed together before electrical
connection; after self-stroking they indicate end
positions of the stroke.
Electrical connection
Electrical connections can be accessed by
removing the service cover.
Four cable entries on removable gland support
are provided for M 16×1,5 or M 20×1,5 cable glands.
Note that in order to maintain the enclosure’s IP
rating, appropriate cable glands must be used.
SN 0 V Neutral
SP 24, 230 V AC /DC
4
4, 5 SP(AC)
1
SP
3
GND
0 V Neutral
0(2 )-10 V
Y
0(4) -20 mA
0(2 )-10 V
X
0(4) -20 mA
SP
5
Power
supply
SP output
-max 4A
-min 3W
Input
Input
Output
VD.IR.P2.02
Note: see power consumption
CONTROLLER
AME 685
AME 685 wiring for 3-point floating mode
SN 0 V Neutral
1,3 24, 230 V AC/DC
1
3
24V
230V
4, 5 SP(AC)
1
SP
3
4
5
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Power
supply
SP output
-max 4A
-min 3W
Input
Data sheet AME 685
Actuator operating modes LED operating mode indicator
The three-colour (green/yellow/red) LED function
indicators are located on the actuator cover. They
indicate different operating modes.
RESET button
Actuator have external RESET button which is
located on top cover of the actuator next to LED
indicators. With this button you can enter or exit
Stand-By mode (press once) or Self stroking mode
(press and hold for 5 seconds). See next paragraph
for mode details.
Operating modes
• Self stroking mode
Self stroking mode starts automatically the
first time when power supply is applied to
the actuator. To start self stroking procedure
press and hold RESET button for 5 seconds
until the green light starts flashing. End
positions of the valve are automatically set
and the actuator goes to stationary mode and
starts responding to the control signal.
• Stand-By mode
Press the RESET button for 1 sec. to
enter Stand-By mode. The actuator stops
in current position and stops responding
to any control signal. Red light is constantly
lit. You can manually operate the actuator
with mechanical handle or control buttons.
This mode can be very useful during the
commissioning of other equipment, or for
service purposes. In this mode you can also
set positions of the additional switches. To
exit Stand-By mode press the RESET button
again.
• Positioning mode
The actuator is operating automatically. The
stem is extending or retracting according
to the control signal. When positioning is
finished the actuator goes to stationary
mode. If for one or another reason 3-point
signal (terminals 1 and 3) and Y signal would
be present at the same time, 3-point signal
would prevail.
• Stationary mode
The actuator is operating without errors.
• Error mode
Working temperature is too high - check the
ambient temperature.
Stroke is too short - check the connection
with valve and valve operation, or check if
valve is blocked.
LED signalling
LED Indication type Operating mode
Constantly lit Position ing mode - Actuato r is retracting th e stem
Constantly lit Position ing mode - Actuato r is extending th e stem
Green LED :
Yellow LED:
Red LED:
Red/ Yellow
LED
Flashing
(1 s cycle)
Flashing
(1 s cycle)
Constantly lit
Constantly lit
Flashing
Constantly lit Stand-By mode
Flashing Error Mode
Flashing
(1 s cycle)
Flashing
(1 s cycle)
Self str oking mode - Act uator is retract ing the stem
Self str oking mode - Act uator is extendi ng the stem
Stationa ry mode - Actuat or has reached upp er end
positio n (retracted ste m)
Stationa ry mode - Actuat or has reached bot tom end
position (extended stem)
Stationa ry mode - Single b link when Y signal is p resents
and doubl e blinks when Y si gnal is not connec ted)
Set up str oke limitation (ret racted stem)
Set up str oke limitation (ex tended stem)
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Dark No indication No power su pply
VD.IR.P2.02
Data sheet AME 685
DIP switch setting
The actuator has a selection of DIP switches
(Fig. 1) under the service cover.
DIP1: FAST/SLOW – Speed selection
- FAST; 2,7 s/mm
- SLOW; 6 s/mm
DIP2: DIR/INV – Direct or inverse acting
selector (Fig. 2):
- DIR: The actuator is direct acting to
input signal
- INV: The actuator is inverse (reverse) acting to
control signal
DIP3: 2-10 V / 0-10 V – Input/output
- 2-10 V; the input signal is in the range from
2-10 V (voltage input) or from 4-20 mA
(current input)
- 0-10 V; the input signal is in the range from
0-10 V (voltage input) or from 0-20 mA
(current input)
Signal range selector sets Y and X signal.
DIP4: LIN/MDF – Characteristic modification
function (Fig. 3):
- LIN; Linear correlation between Y
signal and stem position
- MDF (Modified); Enables modified correlation
between Y signal and stem position. Degree
of modification depends on setting of
potentiometer CM.
The function enables to change MCV
(Motorised Control Valve) characteristic (for
example linear to logarithmic and logarithmic
to linear) and works with all combinations of
DIP switch settings.
DIP5: 100%/95% – Stroke limitation (fig.4):
- Set new maximum retracted position of the
actuator
- Set new minimum extended position of the
actuator.
DIP6: C/P – Output signal mode selector
(Fig. 5. see next page) :
- An output signal is present on terminal 4
when the position of the actuator is equal
to or lower than the S4 set point. An output
signal is present on terminal 5 when the
position of the actuator is equal to or higher
than the S5 set point.
- DIP6 C provides a constant output signal on
terminals 4 or 5, regardless of the input signal.
- DIP6 P provides a pulse signal through
parallel or cascade electrical wiring
- Input 1 and 3 dependents from the controller
to output terminals 4 or 5.
Fig. 1
Fig. 2
Q
Y
CM CM CM
Fig. 3
VD.IR.P2.02
Max. retracted
Set new retract
Fig. 4 (For more details see instruc tions document)
Set new extended
Kv
max. extended
© Danfoss | 2016.04 | 5
Data sheet AME 685
S4
S5
DIP switch setting
(continuous)
DIP7: Smart function selector:
- OFF; the actuator does not try to detect
oscillations in the system
- ON; actuator enables special anti-oscillation
algorithm – see section on anti-oscillation
algorithm
DIP8: Uy/Iy –Input signal type selector:
- Uy; input signal Y is set to voltage (V)
- Iy; input signal Y is set to current (mA)
NOTE:
Y detection is disabled if DIP8 is set to ON positions
and DIP3 is set to OFF position.
DIP9: Ux/Ix –Output signal type selector:
- Ux; output signal X is set to voltage (V)
- Ix; output signal X is set to current (mA)
Anti oscillations algorithm
(SW 7 in position ON)
The actuator has special anti oscillations
algorithm. In case control signal Y on certain
point oscillates (Fig. 6) looking from time
perspective, algorithm starts to lower the
amplification of the output to the valve. Instead
of having static characteristics actuator changes
to dynamic characteristics. After the control
signal does not oscillate anymore output to the
valve slowly returns back to static characteristics.
Fig. 5
Valve position X signal (V)
Oscillation
Harmonic oscillations are high frequency
oscillations with low amplitude that vary around
its own equilibrium value and not around
set-point temperature. They can appear in up to
70% of control time, even though the system is
properly commissioned. Harmonic oscillations
have negative influence on control stability, and
lifetime of the valve and actuator.
Fig. 6
Smoothing function
The smoothing function implemented in the
new 2nd generation of anti-oscillation function
reduces harmonic oscillations; the actual
temperature is closer to the set-point (desired
temperature). Smoother operation increases
lifetime of the valve and actuator. This saves
energy and reduces costs in general.
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Data sheet AME 685
Manual operation
Mechanical and electrical operation are
not allowed to be used at the same time!
The actuator can be manually positioned when
in Stand-By mode or when there is no power
supply (mechanically).
B
A
A
B
Mechanical manual operation
The actuator has a knob & crank on the top of the
housing which enables manual positioning of
the actuator.
Use Mechanical manual operation only when
the power is disconnected.
Actuator type
AME 685
Mechanical
operation
Electrical
operation
Electrical manual operation
The actuator has two buttons on the top of
the housing that are used for electrical manual
positioning (up or down) if the actuator is in
Stand-By mode. First press the RESET button
until the actuator goes to Stand-By mode (red
LED is lit). By pressing the upper button the
stem will be extended and by pressing the lower
button the stem will be retracted.
Dimensions
191
493
478
min. 575
186
VD.IR.P2.02
© Danfoss | 2016.04 | 7
Danf
already on order pro
All trademarks in this material are property of the respec
Data sheet AME 685
Actuator – valves
combinations
AME 685
VF3 200-300
oss can accept no responsibility for possible errors in catalogues, brochures and other printed material. Danfoss reserves the right to alter its products without notice. This also applies to products
vided that such alterations can be made without subsequential changes being necessary eady agreed.
8 | © Danfoss | DHS-SRMT/SI | 2016.04
tive companies. Danfoss and the Danfoss logotype are trademarks of Danfoss A/S. All rights reserved.
VD.IR.P2.02
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