Chapter 7 Fastening Instructions
PAGE 7-25
7-3 Judgement Functions (Judge Item 1 / Judge Item 2)
The AFC3000 System is user programmable to select and judge the limits for torque, angle and the number
of revolutions.
With the MULTI system, JUDGMENT is made from the internal sequence operation according to the sequence
commands (At the end of steps, the END command and DATA REPORT command) In a Single System setup,
the sequence is automatic and cannot be changed (1,2 or 3 step fastening) and judgment is at the end of cycle.
Judgment
Outputs
Description of Function/Usage
REJECT
This is output under the following conditions.
･
When a fastening result falls outside a judgment limits at on any spindle. (Torque, Angle,
Time, Rundown Revolutions, Rate, etc)
･
When the PLC I/O input signal “BYPASS” is set “ON” during the fastening cycle.
･
When the sequence operation is started with the PLC I/O input signal “BYPASS” of all
Units being set “ON”.
ACCEPT
This is output when the cycle ends with the fastening results (Torque, Angle, Time,
Rundown Revolutions, Rate, etc) being within the judgment limits on ALL spindles
connected.
ABNORMAL
This is output when a system error occurs at the start of the cycle or during the sequence
operation.
STOP
This is output when the PLC I/O input signal “STOP” is set “ON” during cycle.
Specific to a MULTI system: this is output if a sequence calls a parameter that has an error
in it (ie. the parameter is setup as a “1 STEP” fastening and the sequence calls 2
nd
STEP)
RESET STOP
This is output when the PLC I/O input signal “RESET” is set “ON” during the cycle or when
the RESET button on the display of the MASTER Spindle is pressed.
START OFF
This is output when the PLC I/O input signal “START” is set “OFF” during cycle with
“Deadman” being set as the start method in the sequence setup.
(The start method is set at Sequence Setting of the AFC3000 User Console.)
IN CYCLE
This is output anytime a “Data Report” sequence command is used in the sequence
program while in cycle.
BYPASS
Output when the PLC I/O input signal “BYPASS” is turned ON before the fastening cycle or
when the fastening cycle is started and the RUN/BYPASS switch on the MFC unit is
switched in the BYPASS position.
Reject judgment is made when the fastening results fall OUTSIDE of the preset HIGH / LOW limits
programmed in the parameter set.
(Torque, Angle, Time, Rundown Revolutions, Rate, etc)
• High Limit value (REJECT): A value exceeding the High Limit has been detected
• Low Limit value (REJECT): A value less than the Low Limit has been detected
• Values that fall WITHIN the High / Low limit setting are deemed ACCEPTS.
Be careful fastening judgments are performed.
The fastening parameters D-No. 003 “Output Judgment Item 1” and D-
“Output Judgment Item 2” allow the selection of which items are judged.
Make sure the items you wish to judge are selected.
Caution
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