Danfoss AME 55, AME 56 Actuators for Modulating Control
Product Overview
Features
- ⚙️ Self-adjustment function
- ? Load-related "Switch off" function to prevent valve or actuator overload
- ? Diagnostic LED
Main Data
- Nominal voltage: 24 Vac, 50/60 Hz
- Control input signal: 0(4)-20 mA, 0(2)-10 Vdc
- Force: 2000 N (AME 55), 1500 N (AME 56)
- Stroke: 40 mm
- Speed: 8 s/mm (AME 55), 4 s/mm (AME 56)
- Max. medium temperature: 200 °C (with insulated valve)
- ? Manual operation available
Valve Compatibility
Actuators are used with valves:
- VFM 2 (DN 65-150) only in combination with AME 55
- VFS 2 (DN 15-50) only in combination with AME 56 (clutch available on special request)
- VFS 2 (DN 65-100)
- VL 2/3 (DN 100)
- VF 2/3 (DN 100-150)
- VL 2/3 & VF 2/3 (DN 65, 80) only in combination with AME 56 and adapter 065Z0312
- AFQM (DN 65-125) and AFQM 6 (DN 40-50)
Ordering Information
Actuators
| Type | Power supply | Code No. |
|---|---|---|
| AME 55 | 24 Vac | 082H3022 |
| AME 56 | 24 Vac | 082H3025 |
Accessories
| Type | Code No. |
|---|---|
| ♨️ Stem heater 24 Vac/dc; 40W (for VF, VL valves DN 65-80) | 065Z0315 |
| ♨️ Stem heater 24 Vac/dc; 20W (for VF, VL valves DN 100 and VFS2 valves DN 15-50) | 065Z7020 |
| ♨️ Stem heater 24 Vac/dc; 40W (for VF valves DN 125, 150 and VFS DN 65-100) | 065Z7022 |
| ? Adapter (for VF, VL valves DN 65-80) | 065Z0312 |
| ⚙️ AME 56 clutch (for VFS 2 DN 15-50) | 065Z7551 |
| ? AM-PBU 25 - Power backup unit | 082H7090 |
Technical Data
| Parameter | AME 55 | AME 56 |
|---|---|---|
| Power supply | 24 Vac; ± 10% | |
| Power consumption | 9 VA | 19.5 VA |
| Duty cycle | S3 60% ED (IEC 60034) | |
| Frequency | 50/60 Hz | |
| Control input Y | 0-10 Vdc (2-10 Vdc) Ri = 24 kΩ; 0-20 mA (4-20 mA) Ri = 500 Ω | |
| Output signal X | 0-10 Vdc (2-10 Vdc) | |
| Closing force | 2000 N | 1500 N |
| Max. stroke | 40 mm | |
| Speed | 8 s/mm | 4 s/mm |
| Max. medium temperature | 200 °C | |
| Ambient temperature | 0...55 °C | |
| Storage and transport temperature | -40 ... 70 °C | |
| Ambient humidity | 95% r.h., non-condensing | |
| Protection class | III | |
| Grade of enclosure | IP 54 | |
| Weight | 3.8 kg | |
| CE-marking in accordance with standards: Low Voltage Directive (LVD) 2014/35/EU: EN 60730-1, EN 60730-2-14; Electromagnetic Compatibility Directive (EMC) 2014/30/EU: EN 61000-6-2, EN 61000-6-3 | ||
Installation
Mechanical Installation
The actuator should be mounted with the valve stem in either a horizontal position or pointing upwards. Use a 4 mm Allen key (not supplied) for the valve stem and an M8/SW13 key (not supplied) to fit the actuator to the valve body. Ensure necessary clearance for maintenance purposes.
The red position indication rings should be pushed together before commissioning. These rings indicate the valve opening degree after self-adjustment.
Arrange proper valve insulation to avoid direct heat transfer to the actuator.
Electrical Installation
Electrical connections are accessed by removing the cover. Two M16 x 1.5 cable entries are provided, each with a rubber grommet for flexible cable. Appropriate cable glands must be used to maintain the enclosure's IP rating.
Wiring Length Recommendations:
| Wiring length | Recommended square of the wiring |
|---|---|
| 0-50 m | 0.75 mm² |
| > 50 m | 1.5 mm² |
DIP Switch Settings
The actuator features DIP switches located under the removable cover for configuration. The switches provide the following functions:
DIP1: U/I - Input Signal Type Selector
OFF: Input signal Y is voltage (V).
ON: Input signal Y is current (mA).
DIP2: 0/2 - Input Signal Range Selector
OFF: Input signal range is 2 V to 10 V (voltage) or 4 mA to 20 mA (current).
ON: Input signal range is 0 V to 10 V (voltage) or 0 mA to 20 mA (current).
DIP3: D/I - Direct or Inverse Acting Selector
OFF: Actuator is direct acting (stem extends with voltage increase).
ON: Actuator is inverse acting (stem retracts with voltage increase).
DIP4: ---/Seq - Normal or Sequential Mode Selector
Allows two actuators to work in parallel with one control signal. When set to SEQUENTIAL, an actuator responds to a split control signal (e.g., 0(2) V ... 5(6) V / 5(6) V ... 10 V). This function requires DIP5 to be configured.
DIP5: 0-5 V/5-10 V - Input Signal Range in Sequential Mode
This function is active only if DIP4 is set to SEQUENTIAL. Otherwise, the actuator uses the full control range (0(2)-10V or 0(4)-20mA).
DIP5 OFF: Actuator matches control signal range:
- 2...6 V (DIP1/DIP2 OFF)
- 0...5 V (DIP1 OFF, DIP2 ON)
- 4...12 mA (DIP1 ON, DIP2 OFF)
- 0...10 mA (DIP1 ON, DIP2 ON)
DIP5 ON: Actuator matches control signal range:
- 6...10 V (DIP1/DIP2 OFF)
- 5...10 V (DIP1 OFF, DIP2 ON)
- 12...20 mA (DIP1 ON, DIP2 OFF)
- 10...20 mA (DIP1 ON, DIP2 ON)
DIP6: Prop./3-pnt - Modulating or 3-point Mode Selector
Modulating Mode (DIP 6 OFF - factory setting): The actuator starts the self-adjustment procedure upon power-up. The indicator LED flashes until complete. The stem moves to its fully extended or retracted position when SN signal is bridged to terminals 1 or 3, remaining in position as long as potential is present. Bridging SP to terminals 1 or 3 is not allowed in this mode.
3-point Mode (DIP 6 ON): Requires careful wiring, especially for controllers with triacs output (ECL) versus relay output. Connect SN (Neutral) and power supply (24Vac) via the controller to terminals 1 or 3. Return signal X depends on DIP 2, 3, and 5 settings and is possible if power supply is connected to SP and SN.
DIP7: LOG/LIN - Flow Characteristic Selector
OFF: Valve characteristic is unchanged (factory setting).
ON: Sets the valve characteristic to linear flow. This is intended for use with valves having an equal percentage characteristic to achieve a linear overall characteristic. This setting affects the motorized valve's characteristic.
DIP8: 100 % Kvs/Reduced Kvs - Flow Reduction Selector
OFF: Flow through the valve is not reduced.
ON: Reduces the flow through the valve by half of the increment standard Kvs values (e.g., for a valve with Kvs 16, setting DIP8 to ON limits maximum flow to Kvs 13).
Note: This setting is intended for use only with valves that have an equal percentage characteristic.
DIP9: Reset
Changing this switch position initiates a self-adjustment procedure for the actuator.
Wiring and Diagnostics
Automatic Self-Adjustment Procedure
Upon initial power connection or reset, the actuator automatically adjusts to the valve stroke. The diagnostic LED flashes during this process, which typically lasts a few minutes. To restart, change the position of the RESET switch (DIP9).
If the supply voltage drops below 80% for more than 0.1 seconds, the current valve position is stored in memory after a power supply cut-out.
Signals on terminals 1 or 3 have priority over the Y input signal.
Diagnostic LED
The red diagnostic LED, located on the PCB under the cover, indicates operational states:
- Constant light: Normal operation
- No light: No operation or no power supply
- Intermittent light (1 Hz): Self-adjusting mode
- Intermittent light (3 Hz): Power supply too low, insufficient valve stroke (<20 s), or end-position cannot be reached.
Wiring Diagrams
DIP 6 = OFF: Wiring for Modulating Mode
This configuration is used for modulating control. It shows connections for a controller with SN, SP, Y, 1, 3, and X terminals, supporting both voltage and current input signals.
DIP 6 = ON: Wiring for 3-point Floating Mode (Controller with Relay Output)
This setup is for 3-point floating control using a controller with a relay output. The actuator requires self-adjustment before setting DIP 6 to ON. Output signal depends on DIP 2, 3, and 5 settings.
DIP 6 = ON: Wiring for 3-point Floating Mode (Controller with Triacs Output ECL)
This configuration is for 3-point floating control using a controller with a triacs output (ECL). The actuator requires self-adjustment before setting DIP 6 to ON. Output signal depends on DIP 2, 3, and 5 settings. Note the use of 2.6 kΩ resistors (*R1, *R2) for triacs output.
Commissioning
Complete mechanical and electrical installation, then perform checks and tests. Isolate control medium (e.g., in steam applications) to prevent hazards during self-adjustment.
Apply power; the actuator will begin its self-adjustment procedure. Apply the appropriate control signal and verify the valve stem direction. Ensure the actuator drives the valve through its full stroke by applying the control signal. This sets the valve stroke length. The unit is now commissioned.
Commissioning / Testing Feature
The actuator can be driven to fully open or closed positions (depending on valve type) by connecting the SN signal to terminals 1 or 3.
Manual Override
Manual override is performed by rotating the 4 mm Allen key (not supplied) to the desired position. Observe the rotation symbol.
Steps: 1. Disconnect power supply. 2. Adjust valve position using the Allen key. 3. Set valve to closed position. 4. Restore power supply.
If manual override was used, the X and Y signals may not be correct until the actuator reaches its end position. If this is unacceptable, reset the actuator or use an accessory active return signal kit.
Usage of an electrical drill machine is not allowed.
Dimensions
The actuator has the following approximate dimensions: Height: 328 mm (min 478 mm), Width: 120 mm, Depth: 55 mm.
Actuator-Valve Combinations
The following diagrams illustrate various combinations of AME actuators with different Danfoss valves, including necessary accessories:
- AME 56 with VL 2, VF 2 (DN 65-80) + adapter 065Z0312
- AME 56 with VL 3, VF 3 (DN 65, 80) + adapter 065Z0312
- AME 56 with VFS 2 (DN 15-50) + clutch 065Z7551
- AME 55, AME 56 with VFS 2 (DN 65-100)
- AME 55 with VFM 2 (DN 65-150)
- AME 55, AME 56 with VL 2 (DN 100)
- AME 55, AME 56 with VF 2 (DN 100-150)
- AME 55, AME 56 with VL 3 (DN 100)
- AME 55, AME 56 with VF 3 (DN 100-150)
- AME 55 with AFQM 2 (DN 65-250), AME 56 with AFQM 2 (DN 65-125)
- AME 55, AME 56 with AFQM (DN 65-125)
- AME 55, AME 56 with AFQM 6 (DN 40-50)
