Nahtwahter

Nahtwächter® (seam detector) type NW-i

The Nahtwächter® NW-i (seam detector) is the simplest seam detector in the Nahtwächter range and consists of a control unit in which the output signal is generated.
When a seam is detected, an output signal with a duration of approximately 1 second is generated to activate an acoustic signalling device or a warning lamp.
This version of the seam detectoris recommended for machines equipped with a PLC, which allows for the implementation of a customer-specific control system.

Nahtwächter® (seam detector) type NW-2D

Version NW-2D of the Nahtwächter (seam detector) is equipped with the complete control electronics for generating an output signal coupled to a distance sensing device for raising the calender roll.
The distance sensing device is started as soon as a seam is detected in the web.
The distance for raising and lowering the calender roll can be adjusted simply with two thumbwheel switches at the control unit.

Nahtwächter® (seam detector) type NW-2DKi

Version NW-2DKi of the Nahtwächter (seam detector) is equipped with the complete control electronics for generating an output signal coupled to a distance sensing device for raising (e.g.) a calender roll.
The distance sensing device is started as soon as a seam is detected in the web.
The distance for raising and lowering the calender roll can be adjusted simply with two thumbwheel switches at the control unit.
Compared with the Nahtwächter NW-2D, this version seam detector features an extra output for a web speed signal.

Nahtwächter® (seam detector) type NW-4D and NW-6D

Versions NW-4D and NW-6D of the Nahtwächter (seam detector) is equipped with the complete control electronics for generating two, resp. three output signals coupled to a distance sensing device for raising several calender rolls, cutting cylinders or pressure rolls.
The distance sensing devices are started as soon as a seam is detected in the web.
The distance for raising and lowering the calender rolls can be adjusted simply with four/six thumbwheel switches at the control unit.
This version of the Nahtwächter (seam detector) is used for machines where several rolls need to be operated in a sequence, for example a colour printing press by Stork Boxmeer Holland.

Interested in one of our products? Contact us!