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Light grey enclosure, blue front label, integrated switch
Light grey enclosure, blue front label, integrated switch
AC fan speed controller with analogue input and TK monitoring -  3 A
AC fan speed controller with analogue input and TK monitoring -  3 A
AC fan speed controller with analogue input and TK monitoring -  3 A
AC fan speed controller with analogue input and TK monitoring -  3 A

AC fan speed controller with analogue input and TK monitoring - 3 A


Product description

This is an AC fan speed controller with analogue input and thermal motor protection. It controls single-phase voltage controllable motors with a maximum current of 3 A. The AC fan speed is regulated by varying the motor voltage via phase angle control - Triac technology. A remote start - stop command can be generated via the digital input. The minimum and maximum speed are adjustable via internal trimmers. The motor voltage is regulated via the analogue input or via Modbus RTU. The input type can be selected via jumpers: 0-10 VDC or 0-20 mA. Kick start or soft start acceleration and different operating modes can be selected via Modbus RTU. The unregulated output is active when the motor is enabled. The motor can be activated or deactivated via the integrated ON-OFF switch. The TK monitoring function deactivates the motor in case of overheating. Eventual motor problems are identified via the alarm output.


Article code EVSS1-30-DM
Category AC fan peed controller for single phase motors with TK
Available
Current stock 2 U.
Factory lead time 5 Day(s)
Documents

Additional specifications and description


- Invertible analogue input signal: 0—10 / 10—0 VDC or 0—20 / 20—0 mA
- Minimum and maximum output voltage setting by trimmers or via Modbus
- Off value setting by trimmer or via Modbus
- Modbus RTU (RS485) communication
- Kick start or soft start
- Remote control input (normal or timer)
- Analog input (normal or logic - only for the timer start)
- 1 regulated output for the motor
- 1 unregulated output (230 VAC / max. 2 A) for 3-wire motor connection or voltage supply
- 1 low voltage supply output (12 VDC / 1 mA) for an external 10 kΩ potentiometer
- Overheating protection
- Alarm output 230 VAC / 1 A
- Green LED operating indication
- Red LED overheating indication
- Illuminated power switch

Click here to visit the Sentera microsite for electronic fan speed controllers.

See this product in the following solutions:

Solution code
Title
Description

Differential pressure control - 0 - 1.000 Pa - AC voltage controllable

This solution controls AC fans with single-phase motor. The maximum motor current is 3 A. The fan speed is controlled in function of the differential pressure. The differential pressure setpoint can be adjusted via Modbus RTU. This solution can also control air volume flow. It compensates clogging air filters or variable demands to guarantee a constant supply of fresh air. If the motor is equipped with thermal contacts (TK), the fan speed controller can detect motor overheating in an early stage and disable the motor to prevent damage.

Differential pressure control - 0 - 2.000 Pa - AC voltage controllable

This solution controls AC fans with single-phase motor. The maximum motor current is 3 A. The fan speed is controlled in function of the differential pressure. The differential pressure setpoint can be adjusted via Modbus RTU. This solution can also control air volume flow. It compensates clogging air filters or variable demands to guarantee a constant supply of fresh air. If the motor is equipped with thermal contacts (TK), the fan speed controller can detect motor overheating in an early stage and disable the motor to prevent damage.

Remote air curtain control, AC voltage controllable motor

Looking for a control solution with separate potentiometer to regulate air velocity? This control solution provides you infinitely variable speed control for air curtains with single phase voltage controllable motor and a maximum motor current of 3 A. The motor speed can be selected via the external potentiometer. At zero position, the motor is stopped. The motor can be enabled by turning the potentiometer clockwise. motor voltage and speed will further increase while the potentiometer is turned further clockwise. In case the motor is equipped with thermal contacts - TK or integrated temperature sensor in the motor windings – they can be monitored on continuous base. As soon as the motor temperature becomes too high, the motor is disabled to protect it from breaking down. The maximum distance between potentiometer and speed controller depends on many factors but should be kept short.

Remote fan speed control - AC voltage controllable motor

This solution controls AC fans with single-phase motor. The maximum motor current is 3 A. Typically, this solution is used to control AC fans or pumps in HVAC applications. The motor speed can be selected via the external potentiometer. At zero position, the motor stops. The TK monitoring function disables the motor in case of overheating. The maximum distance between potentiometer and fan speed controller depends on many factors but should be kept short.

Differential pressure control - 0 - 1.000 Pa - AC voltage controllable

This solution controls AC fans with single-phase motor. The maximum motor current is 3 A. The fan speed is controlled in function of the differential pressure. The differential pressure setpoint can be adjusted via Modbus RTU. This solution can also control air volume flow. It compensates clogging air filters or variable demands to guarantee a constant supply of fresh air. The power supply allows surface mounting. If the motor is equipped with thermal contacts (TK), EVSS1 can detect motor overheating in an early stage and disable the motor to prevent damage.

Differential pressure control - 0 - 2.000 Pa - AC voltage controllable

This solution controls AC fans with single-phase motor. The maximum motor current is 3 A. The fan speed is controlled in function of the differential pressure. The differential pressure setpoint can be adjusted via Modbus RTU. This solution can also control air volume flow. It compensates clogging air filters or variable demands to guarantee a constant supply of fresh air. The power supply allows surface mounting. If the motor is equipped with thermal contacts (TK), EVSS1 can detect motor overheating in an early stage and disable the motor to prevent damage.

Differential pressure control - 0 - 1.000 Pa - AC voltage controllable

This solution controls AC fans with single-phase motor. The maximum motor current is 3 A. The fan speed is controlled in function of the differential pressure. The differential pressure setpoint can be adjusted via Modbus RTU. This solution can also control air volume flow. It compensates clogging air filters or variable demands to guarantee a constant supply of fresh air. The power supply allows DIN-rail mounting. If the motor is equipped with thermal contacts (TK), EVSS1 can detect motor overheating in an early stage and disable the motor to prevent damage.

Differential pressure control - 0 - 2.000 Pa - AC voltage controllable

This solution controls AC fans with single-phase motor. The maximum motor current is 3 A. The fan speed is controlled in function of the differential pressure. The differential pressure setpoint can be adjusted via Modbus RTU. This solution can also control air volume flow. It compensates clogging air filters or variable demands to guarantee a constant supply of fresh air. The power supply allows DIN-rail mounting. If the motor is equipped with thermal contacts (TK), EVSS1 can detect motor overheating in an early stage and disable the motor to prevent damage.

Remote fan speed control - AC voltage controllable motor

This solution controls AC fans with single-phase motor. The maximum motor current is 3 A. Typically, this solution is used to control AC fans or pumps in HVAC applications. The motor speed can be selected via the external potentiometer. At zero position, the motor stops. The TK monitoring function disables the motor in case of overheating. The maximum distance between potentiometer and fan speed controller depends on many factors but should be kept short.

Frequently asked questions

:
Kick start and soft start are two different ways to start up a motor or fan.
The best acceleration method depends on your application. Applications with high inertia might need a higher torque at start up to avoid stalling of the motor.

Kick start — the motor will accelerate immediately from standstill towards maximum speed.
The full motor torque is almost immediately available. After this start-up period (typically 8 – 10 s), the motor will decelerate towards the requested fan speed setpoint. This starting method is often used to avoid motor stalling at low speed. The disadvantage is the mechanical stress at start-up and a high motor start current.

Soft start — the motor will smoothly accelerate from standstill towards the requested fan speed setpoint.
This starting method gives you the advantage of reduced mechanical stress and lower motor starting currents. Due to the reduced motor torque during start up, this acceleration method is not ideal for high inertia applications.
No. A Sentera fan speed controller with a maximum current of 3 A is designed to control a 3 A motor. No need to overdimension a Sentera fan speed controller!
During operation, asynchronous motors heat up due to electric currents flowing through the motor windings. The air flow generated by the motor compensates this heating proces. If the motor speed is not high enough, the excessive heat might cause melting of the isolation of the motor windings and damage the motor. In some extreme cases, a low motor voltage might even cause stalling of the motor: electric currents are flowing through the motor windings while the motor is at standstill (stalled or blocked). To avoid this, the minimum motor speed should be set high enough to avoid excessive heating or stalling of the motor. The minimum required motor voltage depends on the type and brand of the motor.
The unregulated output provides a voltage of 230 VAC (Imax 2 A) as soon as the motor is enabled. The unregulated output can be used to power a 'motor run indicator light' or to power the start up capacitor in case of single phase motors with external start up capacitor.