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Digital output signals (signals to robot)
General The digital outputs have been implemented as relay outputs. This provides for electrical
isolation of the digital output signals.
Pulssynch HIGH TIG-KD connection box:
"Pulssynch High" informs the robot control of the moment at which the welding current is
in the pulsing current phase.
The digital output for the "Pulssynch High" signal is "open collector". For this reason, a "10
kOhm pull-up resistor" must be connected to the 24 V of the robot control for the
"Pulssynch High" signal on the digital output.
Common signal
(Signal common)
TIG-KD connection box:
Pin 34 serves as a common root for the "Current flow signal", "HF on", "Gas on", "Alarm"
and "Reserve" digital output signals (see "Digital output signals").
Current flow sig-
nal (Signal cur-
rent flow)
TIG-KD connection box:
The current flow signal is set as soon as a stable arc is present.
HF on signal (Sig-
nal HF on)
TIG-KD connection box:
The "HF on" signal is active for as long as the high frequency start arc current is enabled,
before ignition of the arc itself.
The "HF on" signal can be used to send commands to an external high frequency genera-
tor, for example.
Gas on signal
(Signal gas on)
TIG-KD connection box:
Plug X3/pin 18 24 V
Plug X3/pin 27 GND
Plug X3/pin 34 24 V
Plug X3/pin 28 24 V
Plug X3/pin 27 GND
Plug X3/pin 29 24 V
Plug X3/pin 27 GND
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