Danfoss AME 445 Data sheet

Data sheet
Actuator for modulating control
AME 445 - for industrial applications
Description
AME 445 actuator is used for industrial applications with two and three-way valves type VRB, VRG, VF and VL up to DN 80 diameter.
The actuator has some special features:
• it automatically adapts its stroke to the valve end positions which reduces commissioning time (self stroking)
• valve flow adjustment feature; flow can be variably-adjusted from linear to logarithmic or opposite.
• the advanced design incorporates load related ‘switch-off’ to ensure that actuators and valves are not exposed to overload
Combinations with other valves could be seen under Accessories.
Not appropriate for domestic applications, for hot water servi ce with heat exc hangers and f or applicati ons where higher noise level is not acceptable.
Main data:
• Nominal voltage (AC or DC):
• 24 V, 50/60 Hz
• Control input signal:
• 0(4)-20 mA
• 0(2)-10 V
• Force: 400 N
• Stroke: 20 mm
• Speed: 3 s/mm
• Max. medium temperature: 130 °C
• Self stroking
• LED signalling
• External RESET button with lock option
• Output signal
• Manual operation
Ordering
© Danfoss | 2016.08
Actuator
Typ e
AME 445 24 AC/DC 082H0 053
Power supply
(V)
Accessories - Stem heater
Typ e DN Code No.
Stem heater 15 -80 065Z 0315
Accessories - Adapter
Valves DN
Adapter for old
VRB, VRG, VF, VL
valves
max. Δp
(bar)
15 9
20 4
25 2
32 1
40 0.8
50 0.5
06 5Z0313
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Data sheet Actuator for modulating control AME 445
Technical data
Installation
Power supply V 24 AC/DC; ±10%
Power consumption VA 7.6
Frequency Hz 50/60
Control input Y
Output signal X V 0-10 (2-10); [RL = 650 Ω] (maximal load)
Close of force N 400
Max. stroke mm 20
Speed s/mm 3
Max. medium temperature
Ambient temperature 0 … 55
Storage and transport temperature –40 … 70
Protection class II
Grade of enclosure IP 54
Weight kg 0.45
- marking in accordance with standards
V
mA
°C
Low Voltage Directive (LVD) 2006/95/EC: EN 60730-1, EN 60730-2-14
EMC Directive 2004/108/EC: EN 61000- 6-2, EN 61000 -6-3
0-10 (2-10); [Ri = 95 k Ω]
0-20 (4-20); [Ri = 500 Ω]
130
Mechanical
No tool is required to mount actuator on the valve. Installation of the valve with the actuator is allowed in horizontal position or upwards. Installation downwards is not allowed.
The actuator must not be installed in an
explosive atmosphere, at ambient temperature lower than 0 °C or at ambient temperature higher than 55 °C. It must not be subject to steam jets, water jets or dripping liquid as well.
Note: The actuato r may be rotated up to 360° with respe ct to the valve stem by looseni ng the retaining fixtur e. Once the actuator is placed, retighten the fixture.
Electrical
Electrical connections can be accessed by removing the actuator cover. Two cable gland entries without thread (Ø 16 and combined Ø 16/Ø 20) are prepared for cable glands. From factory one entry is provided by rubber cable gland and the other entry is prepared for opening.
Note: Cable and cable g land used must not compromise the a ctuator’s IP rating, and must e nsure the connectors are ful ly strain relieved. Rubber cabl e gland delivered from fac tory does not compromis e IP rating but it doe s not provide fully strain rel ieve according to LVD directive. Please obser ve local rules and regulatio ns as well.
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Data sheet Actuator for modulating control AME 445
Jumper/DIP switch setting
Jumper
U/I - Input signal type selector
U position; voltage input is selected
I position; current input is selected
DIP switches
SW 1: Not used
SW 2: Input signal range selector
OFF position; the input signal is in the range from 0-10 V (voltage input) or from 0-20 mA (current input)
ON position; the input signal is in the range from 2-10 V (voltage input) or from 4-20 mA (current input)
SW 3: Direct or inverse acting selector
OFF position; the actuator is in direct acting mode (stem extend as voltage increases)
• ON position; the actuator is in inverse acting mode (stem retracts as voltage increases)
SW 4: Not used
SW 5: Not used
SW 6: Not used
INV
2 … 10 V
DIR
0 … 10 V
LOG
SMART
LIN
ACT
SW 7: Linear or equal-percentage flow through valve selector
OFF position; the valve position is linear acc. to the control signal
ON position; the valve position is equal­percentage acc. to the control signal. This relation is adjustable - see Equal-percentage valve-flow adjustment section
SW 8: Smart function selector
OFF position; the actuator does not try to detect oscillations in the system
ON position; the actuator enables special anti oscillations algorithm – see Anti oscillations
algorithm section
Equal-percentage valve-flow adjustment
(SW 7 in position ON)
The actuator has a special valve-flow adjustment feature. Flow can be, by turning the potentiometer clock wise (CW) or counter clockwise (CCW), variably adjusted from linear to logarithmic or opposite. For details see Instructions.
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Data sheet Actuator for modulating control AME 445
Jumper/DIP switch setting
(continued)
Anti oscillations algorithm
(SW 8 in position ON)
The actuator has special anti oscillations algorithm. In case control signal Y on certain point oscillates (Fig. 1) - 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 (Fig. 2) - certain output stroke area changes to new slope (decrease amplification).
Valve position X signal (V)
Functi on OFF Functi on ON
Fig. 1
time (se c)
iMCV 2nd generation
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.
After control signal does not oscillate anymore output to the valve slowly returns back to static characteristics.
Stroke
static characteristic
Point A
linear area
Fig. 2
dynamic characteristic
Smoothening function
Smoothening function implemented in New 2nd generation of anti-oscillation function reduces harmonic oscillations; consequently room temperature is closer to the set-point (desired) temperature. Smoother operation of the MCV increases lifetime of the valve and actuator and saves energy and reduces costs in general.
4 | © Danfoss | 2016.08
temperature
set-point
time (24 h) time (1 h)
temperature
set-point
control signal feedback signal
VD.LF.P3.02
Data sheet Actuator for modulating control AME 445
Commissioning
Complete the mechanical and electrical installation, set jumper and DIP-switches, then perform the necessary checks and tests:
• Apply power Note that the actuator will now perform
automatic self stroking function
• Apply the appropriate control signal and check:
• if the valve stem direction is correct for the
application and
• the actuator drives the valve over the entire
stroke length
The unit is now fully commissioned.
Automatic self stroking feature
The actuator automatically adapts its stroke to the valve end positions:
• when power is applied for the first time or
• afterwards by pressing the STAND-BY/ RESET/LOCK-button button for 6-9 seconds. The function gets active with releasing the button after 2 × green LED blinks. If LOCK MODE is activated (indicated by 1 × red LED blink after 3 sec. and 2 × after 6 sec.) please first unlock the button-functions by pressing the button for 9-12 sec. and releasing it after 3 × green LED blinks. The button-functions are unlocked now and RESET MODE can be activated as mentioned before.
Testing entire valve stroke length
The actuator can be driven to the fully-open or closed positions (depending on valve type) by connecting SN to terminals 1 or 3.
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Data sheet Actuator for modulating control AME 445
LED signalling/ Actuator operating modes
Flashing green LED:
Self stroking mode =
RESET MODE
(period is every second)
Constant green LED:
POSITIONING MODE
Flashing green LED: Setpoint is reached
(period is every
Flashing red LED: STAND-BY MODE
(period is every two
STA ND-B Y/RE SET/
LOCK- butto n
RED / GREEN
LED LIGHT
STAND-BY, RESET and LOCK MODE on actuator AME 445
Starting from NORMAL MODE
STAN D- BY
enabled
1 × Green 2 × Green 3 × Red
RESET
enabled
LED function indicator
LOCK MODE
activatedNoactivation
Starting from LOCK MODE
LOCK MODE is st ill activated
STAND-BY MODE
Pressing the STAND-BY/RESET/LOCK-button The bicolour (green/red) LED function indicator is located on the actuator cover. It indicates the operating modes.
for 3-6 sec. and releasing it after 1 × green LED blink causes the actuator to activate STAND-BY MODE. The actuator will not react on any change of the control signal until it is
External button
switched back again to NORMAL MODE by
pressing the button as mentioned before. Actuator has external STAND-BY/RESET/ LOCK-button which is located next to LED indicator. By pressing, holding and releasing this button for/after specified time periods, different operating modes are initiated:
During STAND-BY MODE, the actuator can be
moved manually or can be switched to RESET
MODE or LOCK MODE by pressing the button
as described in the according operating
modes.
LOCK MODE
Self stroking mode = RESET MODE Pressing the STAND-BY/RESET/LOCK-button
for 6-9 sec. and releasing it after 2 × green LED
blinks causes the actuator to start self stroking procedure: The bicolor LED flashes green at 1 sec.
intervals during calibration procedure, which
begins by extending the stem. When the
maximum force is detected (at the valve
end position), the actuator then retracts the
stem, until the maximum force is once again
detected (on the other valve end position).
The actuator will then enter to NORMAL MODE
Pressing the STAND-BY/RESET/LOCK-button
for 9-12 sec. and releasing it after 3 × red LED blinks causes the actuator to activate LOCK MODE. The actuator can not be brought to STAND-BY MODE or RESET MODE until it was switched back again to NORMAL MODE by pressing the button as mentioned before (releasing the button now after 3 × green LED blinks). During LOCK MODE, the actuator works just as described in NORMAL or POSITIONING MODE, but with partly locked button-functions (shown with 1 × or 2 × red LED blinks).
and respond to the control signal.
REMARK
POSITIONING MODE The bicolour LED is green and stays on during
positioning of the actuator according to the
Pressing the STAND-BY/RESET/LOCK-button
for more than 12 sec., no activation/ deactivation occurs.
control signal
6 seconds)
seconds)
1 × Red 2 × Red
Deactivates LOCK MODE
3 × Green
activat ion /
deactivation
No
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NORMAL MODE When the positioning of the actuator is
finished the LED flashes green every 6
seconds.
VD.LF.P3.02
Data sheet Actuator for modulating control AME 445
Manual override
Wiring
24 V AC/DC only
Manual override is done by means of control knob on actuator housing:
• Disconnect power supply or activate STAND-BY MODE
• Adjust valve position using the control knob (observe the rotation direction)
After manual override is not needed:
• Restore power supply or go to NORMAL MODE again
Remark:
When the manua l override has been used, the o utput signal (X) is not correct unti l the actuator reaches its e nd position.
SP 24 V AC/DC ...... Power supply
power supply
down up
SN 0 V .............. Common
Y 0(2)-10 V ......... Input signal
0(4)-20 mA
X 0(2) -10 V ......... Output signal
1, 3 Override input signal
(can not be used for 3-point control)
Wiring length
0-50 m 0.75 mm
> 50 m 1.5 m m
Recommended cross-sectional
area of the wiring
2
2
Disposal
VD.LF.P3.02
The actuator must be dismantled and the elements sorted into various material groups before disposal.
© Danfoss | 2016.08 | 7
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Data sheet Actuator for modulating control AME 445
Actuator - valve combinations
Dimensions
AME 445 +
VRB 2, VRG 2
147
AME 445 +
VRB 3, VRG 3
AME 445 +
VF 2, VL 2 DN 15- 80
82.5
159. 5
AME 445 +
VF 3, VL 3 DN 15- 80
min . 180
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 | 2016.08
tive companies. Danfoss and the Danfoss logotype are trademarks of Danfoss A/S. All rights reserved.
VD.LF.P3.02
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