14 Description of Units and Circuit Boards
14.13Universal I/O Signal Assignment
14-71
182582-1CD
182582-1CD
MH900, DX200 Controller
20052
3)
TRANSTHERMO ERROR
Error signal is sent from the transformer in the gun to the robot. This signal is ON
normally (NC) and an alarm occurs when the signal is OFF. The servo power supply
remains ON.
20053
3)
LOW AIR PRESSURE
When air pressure is reduced and this input is turned ON, an alarm occurs. The servo
power supply remains ON.
4)
WELD COMPLETION
This signal indicates that the Power Source completed welding without error. This
signal is used as a confirmation signal for welding instruction execution and manual
spot welding.
After this signal is input, the welding sequence is completed and the next step is
executed when confirmation limit switch is not provided.
4)
WELDING ERROR
This signal indicates an abnormal welding result or Power Source’s error. Alarm
occurs and the manipulator stops if this signal is input during welding.
4)
STICK DETECTION
This signal indicates an abnormal welding result or Power Source’s error. Alarm
occurs and the manipulator stops if this signal is input during welding.
4)
GUN FULL OPEN DETECTION
This signal indicates that the stroke of the double stroke gun is full open.
4)
GUN SHORT OPEN DETECTION
This signal is connected with a single gun open verification limit switch or a double
stroke gun short open verification limit switch to verify the gun open.
4)
GUN PRESSURE DETECTION
This signal indicates that a gun is in pressing status.
4)
TIP REPLACE COMPLETION
When this signal is input after tip replacement, the TIP REPLACE REQUEST signal
turns OFF, and the stored number of welding is cleared.
1 A master job is a job (program) which can be called by CALL MASTER JOB.
Other functions are the same as for normal jobs. Normally, the parent job, which manages the child jobs called
up immediately after the power is turned ON, is set as the master job.
2 See chapter 8.6 “Interference Area” at page 8-57.
3 This signal can be set as “USE” or “NOT USE” by pseudo input signal ”8202x”. If “NOT USE” is selected, this
signal can be used as the universal I/O signal described in parentheses.
4 This signal can be allocated to any universal I/O signal at the I/O allocation display in operation condition.
Table 14-8: Specific Input (Spot Welding) (Sheet 2 of 2)
Logical
Number
Input Name / Function
Timer Cooling Water Error Validating (or IN09)
Gun Cooling Water Error Validating (or IN10)
Transthermo Error Validating (or IN11)
Low Air Pressure Validating (or IN12)
Weld ON/OFF Validating (or OUT09)
7 6 5 4 3 2 1 0
0 0 0 1 1 1 1 1
Pseudo Input
Signal 8202x
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