91c_LCD en bedingt.fm, 10.09.2010
P1890E/EN 2010-08
29
LCD display
7
7.3.5
Diagnostics submenu
TQ calibration
This test function cyclically recalibrates the system with the values used immediately before
the start of a rundown. For this, the tool must not be tensioned!
First line: Calibration test and status.
Second line: TQ calibration voltage.
Third line: Offset voltage. If a value lies outside the tolerance range, the corresponding error
is displayed.
TQ measurement
In this test function, after the start button is pressed, the same calibration is carried out as
immediately before the start of a rundown. For this, the tool must not be tensioned!
Then, the tool starts with speed "0". The torque is continuously measured and displayed until
the start button is released.
Second line: Current torque.
Third line: Peak value, highest value since the start button was pressed.
Angle encoder
The start button starts the tool at 30 % of the maximum speed. After one revolution of the
output shaft (nominal angle 360°), measured with the resolver, the tool is stopped. During a
fixed dwell time of 200 ms, any further angle pulses occurring are traced. The total result is
shown as Actual Angle. If the test run is not terminated by a monitoring criterion and the
batch result is greater than or equal to 360 degrees, it is evaluated and displayed as OK.
Monitoring criteria are the torque and a monitoring time.
If the torque exceeds 15 % of the calibration value (even during the dwell time), or if the
monitoring time of 4 seconds expires, the test run is terminated with a
TQ>
or
TMAX
result.
However, you specifically need to check whether the output shaft has actually turned by the
value indicated (e. g. by placing a mark on the spindle). If the angle reached by the output
shaft does not agree with the value displayed, either the angle factor has been entered
incorrectly or the resolver is defective.
Voltages
Second line: Current battery voltage. To ensure high utilization potential, this voltage is
monitored continuously during fastening operation. If the voltage drops below limit, a
warning output on the tool.
Third line: Programmed value.
This can be changed using the control
(under
Tool
)
.
Speed
The start button starts the tool at the maximum speed.
Second line: Current output shaft speed.
Third line: Current torque.
Rotational speed measurement is based on the angle information of the resolver. If you
release the start button, the tool stops. As a safety function the torque is monitored by the
tool transducer. If it exceeds 15 % of its calibrated value, the speed measurement is
terminated.
Cal OK
K 1.11
O 0.00
Value
Rated value
Tolerance
TQ calibration voltage:
1.10 V
± 45 mV
Calibration offset
0 V
± 58 mV
Torque
T 5.57
T 8.23
Angle
A 360
OK
Voltage
V26.40
U19.00
Speed
Rpm466
T 0.02
Содержание 17BP B
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