Mec 3072ES, Service And Parts Manual

Page: 54 / 254

October 2008 "3072ES / 3772ES / 3772ES HD" Service & Parts Manual
Page 2-16
ART_2331
A
B
C
D
E
F
A
B
C
D
E
F
A - B CLOSED
C - D CLOSED
E - F OPEN
A - B OPEN
C - D OPEN
E - F CLOSED
SWITCH RELEASED
SWITCH DEPRESSED
NO NC NC
NO NC NC
Cover
Plunger
Cover
Screw
Check Limit Switch Operation
• Disconnect wires.
• With one probe of ohm meter to common and other probe to open contact, move limit switch
arm. Low resistance should be seen.
• With one probe of ohm meter to common and other probe to closed contact, low resistance
should be seen. Move limit switch arm and no resistance should be seen.
Check Emergency Stop Button
• Disconnect wires.
• Connect one probe of ohm meter each terminal.
• With the button PRESSED there should be no reading.
• With the button RESET there should be a low resistance.
1
1A
ART_2566
Motor Controller
The Petronic GP400 Processor and GP600 Motor Speed Controller are located in the control
module behind the lower controls. The GP400 Matrix Module is located in the upper control box.
Diagnostic information
can be found in Section 4: Troubleshooting. Wiring information can be
found in Section 5: Schematics.