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Power Analyzers
Operation
19
Motor Speed / Torque Channel Configuration
From the Main screen of any view mode:
1. Select
1 (Configure) > 1 (Range) > 5 (Motor).
The Configuration interface of Motor Speed / Torque is as shown in
Table 8.
The Mode is selected by default (the drop-down menu is highlighted in yellow).
2. Push S and use the up and down arrow (K L) keys to select the corresponding option. Then
push S again to confirm the option.
3. Use the up and down arrow (K L) keys to move the cursor to Ratio. Then push S.
4. Enter the correct values on the keyboard by using the up and down arrow (K L) keys and push
S.
5. Use the up and down arrow (K L) keys to highlight the Ok button on the keyboard, then push
S to confirm the input value.
6. For the Ratio option of the torque, repeat step
3 to 5 to configure the torque ratio in V/Nm.
7. Use the arrow (K L M N) keys to move the cursor to the Apply button and push S. The
settings are not saved to the device if you do not select Apply.
8. Push J repeatedly to go back to the main screen.
Table 8. Motor Speed / Torque Channel Configuration
Item Description
Speed
Mode
Speed signal mode options:
• 10V (default): Use for speed sensor for analog voltage output. If the
sensor uses current, frequency or other analog output, it must be
converted to voltage before input.
• A: For encoders with single pulse, only the speed value is measured
and recorded, the direction of rotation is not measured and recorded.
• AB: For encoders with AB double-pulse, both speed value and
direction are measured and recorded.
• ABZ: For ABZ incremental encoder, both speed value and direction are
measured and recorded.
Ratio
Speed sensor ratio.
When Mode is set to 10V, the ratio is in V/rpm, which indicates that how
much voltage (V) it is related to the motor speed (rpm). The formula for the
Analyzer to calculate the actual speed is as follows:
Speed = Voltage/ Ratio
When Mode is set to another option, the unit of the ratio is the number of
pulses per revolution (PPR). The formula for the Analyzer to calculate the
actual speed is as follows:
Speed (rpm) = Pulses per Minute / Ratio
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