Tweco Eliminator Spool Gun User Manual download pdf (Page 18)

5-14

safety and operating instructions

89200011

SECTION 5:

ESG-1 (STOCK NO. 1028-1295)

The ESG-1 is a solid state control for the Tweco Spool gun assembly. It's responsible for the

on/off ﬂow of shielding gas to the gun including pre-ﬂow and post-ﬂow, the on/off ﬂow of the

welding current from the power source, the run-in speed of the ﬁller metal during arc initiation,

and the constant wire feed speed of the ﬁller metal while welding.

Front Panel Controls & Connections

1. Located on the front panel are three (3) potentiometers that allows control of the following

functions;

t-1 - This knob is used to select the amount of pre-ﬂow time desired. The range of pre-

ﬂow time control is 0 - 2.5 seconds.

t-2 - This knob is used to select the amount of post-ﬂow time desired. The range of post-

ﬂow time control is 0 - 2.5 seconds.

O/O - This knob controls the run-in speed of the ﬁller metal towards the workpiece.

2. Spool gun connection (GAS) - the spool gun gas ﬁtting plugs into this connection. Shielding

gas is delivered to the spool gun through this connection.

3. Spool gun connection (CONTROL) - The spool gun control cable plugs into this receptacle.

The ESG-1 and the spool gun communicate with one another through the following pins:

a) Pin A - Motor Voltage (+)

b) Pin B - Motor Voltage (-)

c) Pin C - Gun Switch Output

d) Pin D - Wire Feed Speed Maximum

e) Pin E - Wire Feed Speed Reference

f) Pin F - Wire Feed Speed Minimum

Spool Gun

Connection

(CONTROL)

Spool Gun

Connection

(GAS)

Pre-Flow

Control

(0 - 2.5 sec)

Post-ﬂow

Control

(0 - 2.5 sec)

Run-In

Speed

Control

Figure 5-1: Front Panel Controls and Connection

ESG-1

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