Sentera uses cookies !
Privacy policy
Logo Sentera
Sentera – your partner in HVAC control solutions
Light grey plastic enclosure, blue label, knob
Light grey plastic enclosure, blue label, knob
Light grey plastic enclosure, blue label, knob
Light grey plastic enclosure, three cable glands
Light grey plastic enclosure, blue label, knob
Light grey plastic enclosure

Fan speed controller | TK monitoring | remote start-stop | 7,5 A


Product description

5-speed transformer fan speed controller for single-phase motors with thermal contacts. The (combined) maximum motor current is 7,5 A. The fan speed can be set via the rotary switch with OFF position. The motor can remotely be enabled or disabled via the digital inputs. The TK monitoring function deactivates the motor in case of overheating. After a power failure, the motor will automatically restart. The alarm output and the unregulated output can control external devices to generate alerts or to confirm normal operation. The enclosure can be surface mounted and offers an IP54 protection against ingress of dirt, dust and moisture. The fan speed is regulated by reducing the motor voltage via autotransformers in 5 steps. This technology generates an output voltage with perfect sinusoidal shape, guaranteeing quiet motor operation.




Article code STRA1-75L22
GTIN 0.540.100.301.588.9
Category Advanced fan speed control - TK monitoring
Available
Current stock 43 U.
Factory lead time 5 Day(s)
Documents

Additional specifications and description

  
How does it work?
One of the five available speeds can be selected via the rotary switch. At position 0, the motor is disabled. Position 1 is low speed and position 5 is high speed.
 
Remote start-stop
Via the input(s), the motor can be remotely enabled or disabled. There is a normally open input and a normally closed input available.
E.g. via a remote switch - connected to the normally open input - the motor is enabled or disabled. A smoke alarm can be connected to the normally closed input. If a smoke alarm occurs, the motor will be disabled - regardless the status of the other input.
  
Unregulated output
The extra, unregulated output (230 VAC) is active when the motor is enabled. It can be used to control an external run-indicator, a damper, etc.
E.g. when the fan is deactivated, the dampers is closed. When the fan is active, the damper is open.
 
Thermal motor protection
This fan speed controller can monitor thermal motor contacts (TK or thermal contacts measure temperature in the motor windings). In case of motor overheating, the TK monitoring function will disable the motor to prevent motor damage. If the motor is not equipped with TK contacts, both TK terminals of the controller must be bridged to simulate normal motor temperature.
 
Alarm output
The alarm output (230 VAC) is activated when motor problems occur. It can be used to generate alerts.
E.g. in case of motor overheating, the alarm output is activated. The TK monitoring function will disable the motor to prevent further damage. The alarm output can control a warning light.
 
Auto reset after power failure
In case of a power failure, this controller will automatically reset itself. When the power is restored, the motor will restart automatically.
 
Solid enclosure
The enclosure is made of high-quality r-ABS plastic. This material is exceptionally heat resistant, very tough and offers good protection against impacts. The enclosure can be surface mounted and offers an IP54 protection against ingress of dirt, dust and moisture.
 

Related articles

Website is not supported on Internet Explorer! Please use Chrome, Firefox, Edge or other browser.