Tweco WC 1 Weld Sequence Controlle - Manual (Page 6)

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INP 3 – SCHED 2/ PARAMETER SELECT - User definable spare input. Under Remote
Schedule Mode this input can be used for weld schedule selection (Bit 2). Under Remote
Control Mode this input is used to select the parameter to Increase/Decrease. When
Cleared the Current is selected. When Asserted the Wire Feed speed parameter is
selected. This option is only active when the optional wire drive and when the Remote
control mode is enabled.
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INP 4 – SCHED 3/ INCREASE PARAMETER – User definable spare input. Under Remote
Schedule Mode this input can be used for weld schedule selection (Bit 3). Under Remote
Control Mode activating this input will increment the selected parameter as specified by
INP3. The maximum increase level can be user defined for each weld schedule.
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INP 5 – SCHED 4/ DECREASE PARAMETER - User definable spare input. Under
Remote Schedule Mode this input can be used for weld schedule selection (Bit 4). Under
Remote Control Mode asserting this input will decrease the selected parameter as
specified by INP3. The minimum decrease level can be user defined for each schedule.
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INP 6 - CYCLE START – This Input, when asserted, will start a weld cycle and must be
active during the complete weld cycle. If the input is reset the cycle will be terminated. If
the Spot Weld mode is enabled, the weld cycle will be terminated by the user defined weld
time. The Cycle start input must be reset before the next weld cycle can be initiated.
1.4 Control Display and Status Indicators
The controller has a 2-line 16-character Alpha Numeric LCD display which is used to program the
weld schedule data and to configure the control options. Three push button switches are used to
select the desired parameters and to increment or decrement the values. A Program/Run key lock
switch is provided to prevent unauthorized access to the WC 1 weld schedule and system
configuration. Eight Status LEDs are used to indicate the weld sequence events and selected
modes. The Program LED is illuminated when the WC 1 is in weld sequence mode. The Pulse
LED is illuminated when the Pulse Weld function is active. During a weld cycle the status LEDs will
be illuminated to indicate weld event sequence being executed. A RS-232-C serial port is provided
and allows the user to program all of the WC 1 schedules and features off-line.