Digi HI-700HS, Service Manual, Page: 60 / 324

HI - 700HS service manual - 2 - component parts
2 - 26 Issue 1 02/2020
Pack sensor
- Optoelectronic retro reflective type sensor. (Wenglor KR87NCT2)
This sensor is mounted across or overhead the infeed and scale conveyors.
The sensors are supplied 24v from the 24v terminal rail inside the control box
This cable connects to the machines cable form changing the wire colours to:
Red (+24v)
Purple (signal for infeed / sens 1)
Green (signal for scale / sens 2)
Black (0v)
Teach mode
The sensor is set up using a teach mode build into the sensor.
To allow the teach mode to operate, the single white & brown wires (teach wire connection as shown
above) needs to be disconnected using the 2 way Molex plug.
Once the teach operation has been completed, the Molex plug can be reconnected, this will prevent any
further adjustment in the teach mode.
Normally, the required mode is already set and the sensor is ready to sense clear packs. If sensing
problems occur with customer pack, follow details in the servicing section to set the sensor.
LED
Teach
button
Inside the electrical cabinet the incoming
Wenglor sensor cable has wires coloured
Brown (+24v)
Black (signal)
Blue (0v)
Inside the electrical cabinet, each of the Sensor Molex connections has an additional connector link to it
which is the teach wire
Teach wire connection