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■ External analog constants
Constants related to external analog input
Pn230
External analog input level
Select the input level of external analog command.
0: 0 V
～
5 V
1: 0 V
～
10 V
Pn231
External analog filter time constant
Set filter time constant of external analog command.
If the input voltage is unstable, the command value can be stabilized by increasing the set value.
1. If set value increases, the tracking of command value slow down.
It also delays the response to the motor.
Pn232
External analog adjustment gain
Set adjustment gain of external analog command.
External analog voltage x External analog adjustment gain = Command voltage
1. Even if set value increases, the maximum analog command (Pn017, Pn039) reaches the upper limit.
A command exceeding the maximum value cannot be entered.
Pn233
External analog adjustment offset
Set adjustment offset of external analog command.
Calculate the command value for offset set value by using the formula
Maximum analog command (Pn017, Pn039) ÷
(External analog input level (10 V) ÷ External analog adjustment offset (Pn233))
Example) In case of Pn017: 2500 and Pn233: 0.100,
2500 ÷ (10 ÷ 0.100) = 25 r/min
If input voltage 0 V is detected, there will be offset for driving at 25 r/min.
1. Set according to the condition of analog input device you want to use.
Notes
Notes
Notes
If external analog adjustment gain (Pn232) is 1, there will be maximum analog command (Pn017, Pn039) by the
maximum input level.
2. If set value is too small, the command reacts even to fine variations such as noise, and also affects motor
operations.
If you enter the voltage equivalent to command more than the maximum value, the value of maximum analog
command will be the command value.
2. Depending on the setting and usage environment, there is a risk of motor driving even if you set the analog
input to OFF.
