Safety Circuit Wiring

direction may be adjusted with the CLOSE SENSITIVITY preset. (Pic 37)

Pic 37

If it is required to increase the obstruction sensitivity, thus reducing the door edge pressure required to activate the control unit obstruction sensing circuit, which causes the door to stop and re-open during the close fast speed cycle, then the CLOSE SENSITIVITY adjuster should be turned further clockwise. (Pic 38)

Pic 38

Note that this will also increase the possibility of the controller reacting to slight abnormalities or minor damage to the track or misalignment of track sections. This may cause fluctuations in the motor current and may be significant enough to result in the door stopping and re-opening. It is therefore important that the smooth movement of the door is tested by releasing the manual over-ride lever and moving the door by hand in both directions.

Both preset controls are factory set to the 12 o-clock positions. Providing the door runs smoothly by hand in both directions it is unlikely that the presets will require adjustment.

Pic 39

If either of the preset controls is adjusted, the compression of the door edge seal will be affected and thus the position of the fully closed door may be different to the calibrated reference. In which case it may be necessary to complete a new Calibration Reset procedure.

If the door is to be operated without any supplementary safety devices then the STANDARD SAFETY SWITCH, DIP switch No. 2 and the 12 volt Photo-Eye, DIP switch No. 3 should be set to the OFF position.

If a safety device such as a Standard Photo-Beam (Photo-Eye) or Safety Edge is to be fitted then the STANDARD SAFETY switch, DIP Switch No. 2 should be set to the ON position. This provides a Safety STOP and RE-OPEN control of the door if the safety circuit becomes active whilst the door is closing.

If a Photo-Eye with a Normally Closed relay circuit is fitted, then the relay contact wires are connected to the SAFETY terminals at the top right hand side of the panel. (Pic 40)