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The standard AC power inlet panel is described in this sec-

tion. 

The IEC AC power inlet connector mounted on the system 

AC power inlet panel requires a properly configured IEC 

compliant power cord, which enables worldwide system 

operation by simply changing the power cord.
Low profile systems are equipped with a 10 amp rated IEC 

inlet connector. The high profile systems include a 16/20 

amp rated IEC inlet connector. 120 VAC and 3600/4800W 

systems include a non-detachable power cord.
An appropriately rated power cord must be securely at-

tached to the welding system’s IEC inlet connector. If the 

correct power cord configuration is not included with the 

system for the local AC power outlet at your location, an 

appropriate IEC power cord should be available from a 

local electrical parts supplier. Note that the system under-

voltage lockout will inhibit system operation if a North 

American power cord configured for 120V is connected to 

the system. A minimum of 200V is required for the system 

to operate.

The power switch/circuit breaker has a rocker type actua-

tor switch that will activate or deactivate the AC power 

to the system. The power ON position is marked with the 

internationally recognized I symbol, the power OFF posi-

tion is marked with the 0 symbol. This power switch also 

integrates an appropriately sized over-current protection 

circuit breaker function in the generator.
If an over-current condition trips the circuit breaker, it will 

automatically switch to the OFF position. If the overload 

current that caused the circuit breaker to trip is due to a 

transient condition, the circuit breaker can be reset by 

switching the actuator back to the ON position. If when 

resetting the circuit breaker after it has tripped, it imme-

diately trips again, there is likely an internal system mal-

function, and the generator will require service.
Do not repeatedly try to reset the circuit breaker. If it trips, 

this will only cause more damage to the generator.

The standard system I/O panel is described in this sec-

tion. 

The 

SYSTEM INPUTS

 connector mounted on the sys-

tem I/O panel includes connections for all of the basic 

system control input signals, that will typically come 

from an automated control system. The cable attached to 

this connector includes all of the available system con-

trol signals, which will be controlled by an output card 

or output port on the automation controller.
The user can determine which signals to use for each 

particular welding application, but there must be at least 

one connection to this connector in order to activate the 

ultrasound output. All of the input signals on this connec-

tor are electrically isolated (signals are NOT referenced 

to chassis ground) and activated when a 24VDC voltage 

source is connected to the signal input pin, referenced 

to the isolated common pin. The electrically isolated in-

put signals can be driven from an automation controller 

output that is either sinking (NPN) or sourcing (PNP), 

depending upon how the isolated common connection 

is terminated. All inputs sink or source 10mA of current 

from a 24VDC power supply. 

The chassis grounding stud is used to attach a protec-

tive earth ground to the generator. This will aid in the 

suppression of electrical interference or radio frequency 

interference (RFI) that is common in a industrial envi-

ronment. The chassis ground stud is 

C

 in Figure 3-7. 

Proper system grounding is discussed on Page 9.

Figure 3-7  

IEC AC Power Inlet Connector

LINE VOLTAGE: 
200-240 Vac 
50/60Hz, 10A

I

0

C