Product Description
Rs485 Communication 2-Way Electric Drive Linear Actuator HVAC Valve Actuator ZEB24DM
The temperature difference communication actuator is an intelligent control actuator driven by a brushless motor. It is mainly used for the temperature difference control of the water supply and return of the fan coil. The PID control function is adopted to ensure the real-time speed and stability of the adjustment.
Even if the communication is interrupted, the user can still maintain the automatic control to ensure the control system's safety.
Suppose the temperature difference does not reach the set temperature. In that case, the actuator can adaptively adjust the opening of the actuator according to the temperature difference and, finally, ensure the constant temperature difference between supply and return water.
Temperature difference setting range 2-10℃ (can be changed by MODBUS protocol)
Use the actuator with high precision and multi-function with the fieldbus function; Fieldbus can set the actuator's parameters, and the actuator's functions can be controlled by fieldbus or analog input.
Technical Specifications
| Actuator model number | ZEB24DM |
| Type | Rs485 communication |
| Power supply | 24V AC/DC |
| Power consumption | 3W |
| Standby power | 0.5W |
| Frequency | 50/60Hz |
| Running time | Min. 25s |
| Pushing force | 100Nm (max. 200N, customized) |
| Stroke | 5mm |
| Protection level | IP54 |
| Cable | 4x0.5mm² white PVC 0.55m |
Wiring Diagram
Below are the type of valves to be used for actuators.
| Valve type | Thread | Kvs | Stroke/mm | Valve body pressure MPa | Closing differential pressure MPa | Medium temperature |
| VB10I20A | Rp 3/4" | 5.2 | 4 | 1.6 | 0.4 | 0°C to 100°C |
| VB12I20A | Rp 3/4" | 4.5 | 4 | 1.6 | 0.4 | 0°C to 100°C |
| DN20-AT2 | G 3/4" | 3.2 | 4 | 1.6 | 0.4 | 0°C to 100°C |
| DN20-AT3 | G 3/4" | 2.2 | 3 | 1.6 | 0.1 | 0°C to 100°C |
| VB17D20A | Rp 3/4" | 3.2 | 3 | 1.6 | 0.4 | 0°C to 100°C |
| VB17D25A | Rp 1" | 3.8 | 3 | 1.6 | 0.4 | 0°C to 100°C |
Installation Guild
Before any service work on the final controlling device is carried out, it is essential to isolate the electric actuator from the power supply (by unplugging the electrical cable if necessary). Any pumps in the part of the piping system must also be switched off and the appropriate slide valves closed (allow all components to cool down first if necessary and consistently reduce the system pressure to ambient pressure level).
The system must not be returned to service until the ball valve and the rotary actuator have been correctly reassembled following the instructions, and the pipeline has been refilled by professionally trained personnel.
FAQ
| Q1: Are you a manufacturer or a trader?
A1: We have been a thermostat manufacturer focused on thermostats and temperature controls in the HVAC market for over 30 years. |
| Q2: How are your product quality and warranty?
A2: All our products are 100% tested and conform to CE standards. Samples are available for quality evaluation. One year warranty, but we will continue to provide you technical service after the warranty period. |
| Q3: Can you make a new design for us? Or can you make thermostats according to the samples we give?
A3: We provide OEM and ODM services. We have our own industrial and packaging designer and professional mechanical and electrical engineers to help customers to develop new products. |
| Q4: How long can I get the sample?
A4: Samples are usually ready in 5-20 days based on different types. |
| Q5: What are the nearest ports of shipment?
A5: We usually export goods from Shanghai or Ningbo port. If there are exceptional cases, we will discuss them. |
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