Tweco 186 DC Inverter - Manual (Page 36)

INSTALLATION, OPERATION AND SETUP 3-6 Manual 0-5237
186 AC/DC INVERTER INSTALLATION/SETUP
1. Positive Welding Terminal
Positive Welding Terminal 2" (50mm) dinse. Welding current flows from the Power Source via heavy duty
bayonet type terminals. It is essential, however, that the male plug is inserted and turned securely to achieve
a sound electrical connection.
2. 8 Pin Control Socket
The 8 pin receptacle is used to connect a trigger switch or remote control to the welding Power Source circuitry:
To make connections, align keyway, insert plug, and rotate threaded collar fully clockwise. The socket information
is included in the event the supplied cable is not suitable and it is necessary to wire a plug or cable to interface
with the 8 pin receptacle.
NOTE
When not using a Remote, disconnect any remote control device or it may limit the preview and actual
output current range.
Socket Pin Part Number / Description
1 Not used
2 Trigger Switch Input
3 Trigger Switch Input
4 Not used
5 Remote Control 5k ohm Potentiometers Maximum
6 Remote Control 5k ohm Potentiometers Minimum
7 Remote Control 5k ohm Potentiometer Wiper
8 Not used
Table 3-2: 8 Pin Control Plug Configuration
3. Negative Welding Terminal
Negative Welding Terminal 50 mm dinse. Welding current flows from the Power Source via heavy duty bayonet
type terminals. It is essential, however, that the male plug is inserted and turned securely to achieve a sound
electrical connection
CAUTION
Loose welding terminal connections can cause overheating and result in the male plug being fused in the
terminal.
4. Shielding Gas Outlet
The Shielding Gas Outlet located on the front panel is a 5/8-18 UNF female gas fitting and is utilized for the
connection of a suitable TIG Torch.
5. Power ON Indicator
The POWER ON indicator illuminates when the ON/OFF switch (20) is in the ON position and the correct mains
voltage is present.
6. Fault Indicator (Thermal Overload or Primary Circuit Overcurrent)
The Fault Indicator will illuminate in conjunction with an “Err 001” displayed on the ammeter and voltmeter
digital displays if either of the following two conditions exists
3 4 5
6 7 8
1 2
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