Chapter 6 Fastening Operation
PAGE 6-63
Torque
D-No. 100 Calibration Torque [N･m]
Setting range: 70% ~ 120% of the standard calibration torque of the tool
This sets the calibration torque value of the connected tool. In the case where the tool calibration
needs to be adjusted (due to outside influences such as a sockets, extensions, external offset gear
or workpiece characteristics, the indicated fastening result value differs from the result obtained by
a certified fastening torque tester, etc., the fastening torque can be corrected by this setting.
Changed calibration torque =
Measured torque (tester result) ÷ standard torque × Current calibration torque
Example: In the case of:
D-No. 100 [Calibration Torque] : 294.2N･m
D-No. 103 [Standard Torque] : 200.0N･m
Measured value (test result) : 210.0N･m
210.0N･m ÷ 200.0 N･m × 294.2N･m = 308.9N･m
Therefore, the calibration torque would be changed to 308.9N･m.
If the calibration torque is to be changed, calculate the average value from
multiple fastening results data (as a guideline based on a statistical standpoint,
use (20) as the sample number of the fastening results).
･ When the calibration torque is changed, confirm that other torque-related
parameters are lower than the changed calibration torque. The other
torque-related parameters must be set to values lower than the maximum torque
value of the tool and the calibration torque.
D-No. 101 Peak Torque Low Limit [N･m] Setting range: 0 ~ D-No. 100 [Calibration Torque] × 1.1
D-No. 102 Peak Torque High Limit [N･m] Setting range: 0 ~ D-No. 100 [Calibration Torque] × 1.3
Sets the low and high limit values of the fastening torque.
When the fastening torque exceeds the peak torque high limit or falls below the peak torque low limit,
a REJECT judgment is made.
D-No. 103 Standard Torque [N･m]
Setting range: 0 ~ D-No. 100 [Calibration Torque] × 1.0
The standard torque is the target torque using Torque Control method. (only when D-No. 000
[Fastening Method] is the torque method)
Example: When 10.0 is set, fastening is executed until the torque value becomes 10.0[N･m].
[Caution Regarding Fastening]
Avoid performing fastening at a torque exceeding the maximum fastening torque of a
tool.
Do not use a tool outside the specified duty cycle (ratio of fastening time and
downtime) range, even if the maximum fastening torque is not exceeded.
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