Using A Measuring Instrument - YASKAWA SGD7S Product Manual

 Adjustment Example
An example of adjusting the output of the motor speed monitor is provided below.
Offset Adjustment
Analog monitor output voltage
Offset adjustment
Item
Offset Adjustment Range
Adjustment Unit
• The adjustment values do not use parameters, so they will not change even if the parame-
Information
ter settings are initialized.
• Adjust the offset with the measuring instrument connected so that the analog monitor out-
put value goes to zero. The following setting example achieves a zero output.
• While power is not supplied to the Servomotor, set the monitor signal to the torque ref-
erence.
• In speed control, set the monitor signal to the position deviation.
 Preparations
Always check the following before you adjust the analog monitor output.
• The parameters must not be write prohibited.
 Applicable Tools
You can use the following tools to adjust analog monitor outputs. The function that is used is
given for each tool.
• Offset Adjustment
Tool
Digital Operator Fn00C
Setup - Analog Monitor Out-
SigmaWin+
put Adjustment
9.3 Monitoring Machine Operation Status and Signal Waveforms
Motor speed
Specification
-2.4 V to 2.4 V Gain Adjustment Range
18.9 mV/LSB Adjustment Unit
The gain adjustment range is made using a 100% out-
put value (gain adjustment of 0) as the reference value
with an adjustment range of 50% to 150%.
A setting example is given below.
• Setting the Adjustment Value to -125
100 + (-125 × 0.4) = 50 [%]
Therefore, the monitor output voltage goes to 50%
of the original value.
• Setting the Adjustment Value to 125
100 + (125 × 0.4) = 150 [%]
Therefore, the monitor output voltage goes to 150%
of the original value.
Function

9.3.3 Using a Measuring Instrument

Gain Adjustment
Analog monitor output voltage
1 [V]
1000 [min -1 ]
Item Specification
100 ±50%
0.4%/LSB
Operating Procedure Reference
Σ-7-Series Digital Operator Operating Manual
(Manual No.: SIEP S800001 33)

Operating Procedure on page 9-12
Gain
adjustment
Motor speed
9
9-11