Python 232-835 Manual Do Utilizador

A

F

G

E

D

C

B

"W" Clocked

Amphenol Connector

Viewed from front of connector

Regardless of which gun or feeder used, all MK Products’ push-pull guns 

operate on the same principle.  The slave motor in the feeder runs at a fast, 

constant speed, but has very low torque.  It is always trying to feed more wire 

than the gun motor wants, and when the motor gets all it wants, it slows the 

slave motor, preventing a bird’s nest.  Because of the low torque produced by 

the slave motor, a brake system is used to prevent wire overrun rather than 

tension.  The drag adjustment in the feeder is used simply to keep the wire 

slightly taut, so it will not pull off the spool while feeding wire.
The high torque 24VDC gun motor is controlled by a solid state speed 

control located in the feeder, and a pot located in the gun.  The gun motor, 

potentiometer, and micro switch are connected to the cabinet/control box via 

a control cable and Amphenol connector.  If this cable becomes damaged, a 

variety of symptoms can occur, depending on which wire(s) break.  To test, 

check each wire for continuity and shorts.
Remember, the micro switch in the gun activates both the slave motor and 

gun motor circuits in the cabinet.  Therefore, if the slave motor and brake 

solenoid operate, but the gun does not, look more toward the gun motor’s 

24V circuits, speed control, control cable, or the gun motor.  If nothing 

operates, look more toward the slave motor’s input, micro switch leads, or 

micro switch.

Remove the gun connector from the cabinet.
Using the gun Amphenol connector, check the resistance across pins 

“A” 

and 

“B” (motor leads).  The resistance across the motor should be between 

5 - 10 ohms as the potentiometer is turned.
If an open circuit or short exist, check the motor leads and motor  

independently.
Testing the Potentiometer - “W” Clocked

Using the gun Amphenol connector, check the resistance across pin 

“D” 

(wiper) and pin 

“C”.  The resistance should vary from 0 - 5K ohms as the 

potentiometer is turned.
Check the resistance across pin 

“D” (wiper) and pin “G”.  The resistance 

should vary from 

5K - 0 ohms as the potentiometer is turned.

Using the gun Amphenol connector, check for continuity across pins 

“E” and 

“F” when the trigger is pressed.