
B-65325EN/01 START-UP PROCEDURE FOR βi SVM 4.CONFIRMATION OF THE OPERATION
- 19 -
Setting the output period of motor current data (for the 90B0 series
only)
Output period
Parameter No. 1746 /
Bit 7 of parameter No. 2206
Velocity loop period 0 (default)
Current loop period 1
(Note 3)
NOTE
3 If the current loop period is set up as the motor
current data output period, selecting data number 0,
1, 2, or 4 disables the output of signals (such as a
velocity command) to channels. To observe the
motor current and other signals (such as a velocity
command), specify the output period as 1 ms.
4 For the servo software series 9096, the output
period of the motor current is only 1 msec. The
current loop period cannot be used for output.
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⋅ Setting up the check board
• Set the AXIS digit of the LED display with an axis number from 1
to 8 specified in parameter No. 1023.
• Set the DATA digit of the LED display with a data number from 5
to 6.
- Method for observing the motor current
The voltage corresponding to the motor current is output to a channel
for which 5 or 6 is set as the data number on the servo check board.
The waveform of the motor current can be observed by measuring the
voltage mentioned above with an oscilloscope.
The following table lists the relationships between the observed
voltage and the motor current.
Maximum amplifier
current
SVM type
Motor current/
observed voltage
[A/V]
4A
SVM1-4i
1
20A
SVM1-20i
5
40A
SVM1-40i
10
80A
SVM1-80i
20
For the SVM1-20i, for example, the motor current is 5A (actual value
rather than effective value) if the observed voltage is 1V.