SM24A-MOD Damper Rotary Actuator, 20 Nm, AC/DC 24 V, 150 s - Belimo

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The Belimo SM24A-MOD is a type of Actuator used in HVAC and ventilation systems.

This kind of Actuator rotates the damper in order to control it.

The force applied by the Torque of the SM24A-MOD is 20 Nm.

This Rotary Actuator needs to be supported by a power supply of 24Vac/Vdc.

Find at IACS the ideal Belimo Actuator compatible with your system at the best price.

If you are unsure about size or installation, refer to the Belimo custom datasheet above or message iacs to receive special instructions and a custom quote.

The Belimo SM24A-MOD is a damper actuator used to modify air dampers in ventilation and air-conditioning systems.

A rotational motion is generated by this sort of actuator.

The SM24A-MOD has a modulating type of control.

The Torque force is 20 Nm.

Mode of operation: The actuator is fitted with an integrated interface for Modbus RTU, it receives the digital positioning signal from the Modbus-Master and returns the current status.

Converter for sensors: Connection option for a sensor (passive or active sensor or switching contact). In this way, the analogue sensor signal can be easily digitised and transferred to Modbus.

Parameterisable actuators: The factory settings cover the most common applications. Single parameters can be modified with the Belimo Service Tools MFT-P or ZTH EU. The Modbus communication parameters (address, baud rate etc.) are set with the ZTH EU. Pressing push-button “Service” on the actuator while connecting the supply voltage resets the communication parameters to the factory setting. Quick addressing: The Modbus address can alternatively be set using push-buttons on the actuator from 1 to 16. The value selected is added to the «Basic address» parameter and results in the effective Modbus address. For example, with a basic address of 140, Modbus addresses between 141 and 156 can be parameterised using quick addressing.

Simple direct mounting: Simple direct mounting on the damper spindle with an universal spindle clamp, supplied with an anti-rotation device to prevent the actuator from rotating.

Manual override: Manual override with push-button possible (the gear is disengaged for as long as the button is pressed or remains locked).

High functional reliability: The actuator is overload protected, requires no limit switches and automatically stops when the end stop is reached.

Adjustable angle of rotation: Adjustable angle of rotation with mechanical end stops.

Home position The first time the supply voltage is switched on, i.e. at the time of commissioning, the actuator carries out a synchronisation. The synchronisation is in the home position (0%). The actuator then moves into the position defined by the positioning signal.

Adaption and synchronisation: An adaption can be triggered manually by pressing the “Adaption” button or with the PC-Tool. Both mechanical end stops are detected during the adaption (entire setting range). Automatic synchronisation after pressing the gearbox disengagement button is configured. The synchronisation is in the home position (0%). The actuator then moves into the position defined by the positioning signal. A range of settings can be adapted using the PC-Tool (see MFT-P documentation)

Electrical data:

• Nominal voltage AC/DC 24 V
• Nominal voltage frequency 50/60 Hz
• Nominal voltage range AC 19.2...28.8 V / DC 21.6...28.8 V
• Power consumption in operation 3.5 W
• Power consumption in rest position 1.4 W
• Power consumption for wire sizing 6 VA
• Connection supply / control Cable 1 m, 6 x 0.75 mm²
• Data bus communication
• Protocol Modbus RTU (RS-485), not galvanically isolated
• Number of nodes Max. 32 (without repeater)
• Transmission formats 1-8-N-2, 1-8-N-1, 1-8-E-1, 1-8-O-1 Default: 1-8-N-2 (start bits, data bits, parity, stop bits)
• Baud rate 9600, 19,200, 38,400, 76,800, 115,200 Bd Default: 38,400 Bd
• Terminating resistor 120 Ohm, can be switched
• Parameterisation with Service Tool ZTH EU Pushbutton-operated fast addressing 1 ... 16 possible

Functional data:

• Torque motor Min. 20 Nm
• Torque variable 25%, 50%, 75% reduced
• Position accuracy ±5%
• Direction of motion motor Selectable with switch 0 / 1
• Direction of motion note Y = 0 V: At switch position 0 (ccw rotation) / 1 (cw rotation)
• Direction of motion variable Electronically reversible
• Manual override Gear disengagement with push-button, can be locked
• Angle of rotation Max. 95°
• Angle of rotation note can be limited on both sides with adjustable mechanical end stops
• Running time motor 150 s / 90°
• Motor running time variable 86...346 s
• Adaption setting range manual
• Adaption setting range variable No action Adaption when switched on Adaption after pushing the gear disengagement button
• Override control, controllable via Modbus MAX (maximum position) = 100%, MIN (minimum position) = 0% and ZS (intermediate position) = 50%
• Override control variable MAX = (MIN + 32%)...100%, MIN = 0%...(MAX – 32%) and ZS = MIN...MAX
• Sound power level motor 45 dB(A)
• Spindle driver Universal spindle clamp reversible 10...20 mm
• Position indication Mechanically, pluggable

Safety:

• Protection class IEC/EN III Safety extra-low voltage
• Protection class UL UL Class 2 Supply
• Degree of protection IEC/EN IP54
• Degree of protection NEMA/UL NEMA 2, UL Enclosure Type 2
• EMC CE according to 2004/108/EC
• Certification IEC/EN IEC/EN 60730-1 and IEC/EN 60730-2-14
• Certification UL cULus according to UL 60730-1A, UL 60730-2-14 and CAN/CSA E60730-1:02
• Mode of operation Type 1
• Rated impulse voltage supply / control 0.8 kV
• Control pollution degree 3
• Ambient temperature -30...50°C
• Non-operating temperature -40...80°C
• Ambient humidity 95% r.h., non-condensing
• Maintenance Maintenance-free

Weight: 1.2 kg