Current-Relay Typ STW1K
The automatic start-up system for woodworking machines is a control unit that has been specially developed for the efficient control of extraction systems. Its main function is to monitor the current flow in the supply lines of several machines and to control the extraction system accordingly.
Detailed description of the functionality:
- Current detection: The automatic start-up system is equipped with current relays that monitor the current flow in the supply lines of the machines. These relays are configured in an OR circuit with up to eight inputs. As soon as a current of more than 1 ampere flows through one of the connected current transformers, the built-in relay picks up and activates the extraction system.
- Automatic control: If at least one machine is switched on and draws current, the extraction system is activated automatically. This ensures that dust and chips are extracted immediately, keeping the working environment clean and safe.
- Delayed switch-off: As soon as all machines are switched off and no more electricity is flowing, the relay drops out with a delay of around 10 seconds. This delay time allows the extraction system to remove any remaining particles from the air before it is switched off.
Typical application:
In a joinery that operates several woodworking machines such as saws, planers and routers, the automatic start-up system is installed centrally in the control cabinet. The current transformers are connected to the supply lines of the individual machines. When the carpenter switches on a machine, the automatic start-up system detects the current flow and activates the central extraction system. This ensures that dust and chips produced during woodworking are extracted immediately. As soon as the work is finished and all machines are switched off, the extraction system remains active for a short time to remove the remaining particles before it switches off automatically. This automation not only improves the efficiency of the extraction system, but also contributes to safety and cleanliness in the workplace.
- 8 inputs
- OR-evaluation
- relay picks up if at least 1 input is activated
- Connection of current transformers STWA1 or STWA1H
- operating value approx. 1 A
- turn-off delay approx. 10 s
- not necessary inputs remain open
Change S225636 -> S227400: Our alternative for the STW1K AC220-240V (S225636) is the new STW1K with wide-range power supply unit AC/DC 24-270V (S227400). Version with spring-loaded terminals RoHS/REACH-compliant. Further information can be found in our customer information: “New terminals for type K devices”. The S227400 is an alternative with minor deviations.
If you have any questions, please contact our sales department: +49 791 504-103, verkauf@ziehl.de
If you have any questions, please contact our sales department: +49 791 504-103, verkauf@ziehl.de