YASKAWA SGD7S series Product Manual page 449

 Adjustment Example
An example of adjusting the output of the motor speed monitor is provided below.
Offset Adjustment
Analog monitor output voltage
Off et adju tment
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
Panel Operator Fn00C
Digital Operator Fn00C
Setup - Analog Monitor Out-
SigmaWin+
put Adjustment
9.3 Monitoring Machine Operation Status and Signal Waveforms
Motor peed
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
13.4.11 Adjust Analog Monitor Output Offset
(Fn00C) on page 13-20
Σ-7-Series Digital Operator Operating Manual
(Manual No.: SIEP S800001 33)

Operating Procedure on page 9-14
Gain
adju tment
Motor peed
9
9-13