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Pin 9 is a digital active low status output that activates 
whenever any overload condition is tripped. Activation 
of the overload status output signal could be caused by an 
average overload, a positive peak overload or a negative 
peak overload condition. After the overload status output 
activates, it will remain active until the next ultrasound 
activation cycle begins and this output will automatically 
reset. This output will be an open circuit when no overload 
conditions have been detected.

Pin 10 is a digital active low status output that activates 
when the system is in the ON LINE operating mode, which 
enables the activation of the ultrasonic output. This output 
will be an open circuit if the system is switched to the OFF 
LINE operating mode, which will prevent the start of a 
welding cycle or activation of the ultrasound output. Note 
that an automation controlled process can not weld any 
parts, if the system is, accidentally or otherwise, switched 
to the OFF LINE operating mode.

Pin 11 is a digital active low status output that activates 
when the press/thruster head is in the top of stroke posi-
tion. This output will be an open circuit when the press/
thruster head is not at the top of stroke position.

Pin 13 is the signal common (ground) connection for all 
of the analog monitor signals (on Pins 15 and 16). This 
signal common pin is connected to system chassis ground 
and is not isolated from the generator chassis. This is an 
analog signal ground connection. Do not connect anything 
to this ground connection, except the wiring to the inputs 
of the analog instrumentation devices used to measure the 
monitor output signals.

Pin 14 is connected to the system chassis ground.

Pin 15 is an analog output signal used to monitor the power 
output from the welding system. The scaling on this output 
signal is as shown below:
15kHz, 20kHz, 30kHz and 40kHz systems 

 

1 Watt = 0.001 VDC  (1mV per Watt)
50kHz and higher systems 

 

  

 

1 Watt = 0.010 VDC  (10mV per Watt)
Examples: 

20kHz system measures 0.525 VDC on 

Power Monitor Output = 525 Watts
 

 

 

50kHz system measures 0.525 VDC on 

Power Monitor Output = 52.5 Watts

Pin 16 is an analog output signal used to monitor the 
system amplitude setting. The scaling on this output sig-
nal is 100% amplitude = 10.0 VDC, or 0.1 VDC per 1% 
amplitude. This monitor signal output would typically 
be used when a remote control option board is installed 
in the system. The automation control system will adjust 
the system’s amplitude setting remotely, using a 4-20mA 
current loop attached to the input of the remote control 
board. Using this monitor output, the control system can 
verify that the amplitude is set to the expected programmed 
amplitude level.