Amada IS-300A - (2) Detailed Description of Welding Current and Sequence in the Event of an Error

IS-300A
8. Timing Chart
8-3
(2) Detailed Description of Welding Current and
Sequence in the Event of an Error
1 When monitored value judgment caution/error occurs
A sample weld sequence is shown, which represents the occasion where CAUTION
or ERROR is produced when a monitored value goes out of the range between the
upper and lower limit set in the MONITOR SET screen.
COOL2
WELD2
DOWN2
WELD1
UP1 COOL1DOWN1 UP2 UP3
WELD3
DOWN3
(Note 1) The CAUTION output is ON until the RESET signal or the next 2ND
STAGE signal is input.
When caution occurs with the off time (OFF) setting, operation is
repeated and the caution output is maintained until the result of the next
welding is obtained.
(Note 2) The ERROR output is ON until the RESET signal is received.
When the off time (OFF) is set, operation is stopped without being
repeated after the ERROR output.
2 When caution/error occurs during welding
A sample weld sequence is shown, which represents the occasion where CAUTION
or ERROR is produced while current is supplied.
HOWE3CO2WE2WE1 CO1SQD SQZ
(Note 1) When caution or error occurs, subsequent welding sequence is not
performed.
2ND STAGE
SQD
SQZ
Welding current
HOLD
END
CAUTION
ERROR
RESET
(Note 2)
Monitored value judgment time
(200 μs max.)
(Note 1)
HEAT1 HEAT2 HEAT3
2ND STAGE
SOL1/SOL2
Welding current
CAUTION
ERROR
(Note 1)