Knife Does Not Lift - Horizon Fitness APC-61 Manual

2-4 Knife Does Not Lift Part 2
Knife lower limit position sensor does not
operate correctly.
LED
Knife Exchange
Position Sensor
LED
When knife lower limit position sensor is out
of order with its switch off, it does not detect
knife at the detection point and no signal rises.
Therefore, the machine determines knife does
not reach the lower limit point and operates to
continue lowering knife.
WARNING
Turn off the switch of hydraulic pressure
before the following operation. Other-
wise heavy accident will result.
Lower Limit
Position Sensor
When knife is at the upper limit position,
measure the voltage between 4 and 5 of CON1
on the control board (See "7-5 Control Board,
Connector Layout) is 5VDC. Next, in this
situation, approach a ferrous piece within
2mm. If the voltage changes into 0V, the
sensor has no problem. (LED of the sensor
turns on.)
Sensor
If the voltage remains 5VDC though ferrous
piece is approached, the sensor is out of order
with its switch off.
24V
7
6
RED
Output
5
WHT
4
Shield
3
0V
2
1
2-12