Service manual

2 EXTERNAL COVER/CONTROL SECTION
2-8
DUPLO DF-755 86V-M12D0-0
2.1.2 Safety function
a. Configuration
[7] Top cover switch (SW1)
<DC24V, micro switch>
Detects the open/close of the top cover.
“COVER OPEN”;
When the top cover is detected as open, this message appears on the control panel.
[8] First folding plate switch (SW2)
<DC24V, micro switch>
Detects the presence of the first folding plate.
"PRAT-1 SET ERR";
When the first folding plate switch cannot detect the first folding plate, this message
appears on the control panel.
[9] Second folding plate switch (SW3)
<DC24V, micro switch>
Detects the presence of the second folding plate.
"PRAT-2 SET ERR";
When the second folding plate switch cannot detect the second folding plate, this
message appears on the control panel.
b. Operations
1) One of the following switches activate; SW1, SW2, or SW3.
2) The MC unit (PCB1) turns off the interlock relay (K2) on the AC motor drive unit (PCB3).
3) The 24 VA supplied to the AC motor drive from K2 goes off.
4) The AC output from PCB3 goes off and the AC motor (M1) stops.