Using Intelligent Input Terminals
Oper
ations
a
nd Moni
tor
ing
4–36
The following block diagram shows the torque control operation. If the measured speed
exceeds the speed limit, the motor speed is controlled in proportional control mode.
Clear Cumulative
Power Value
When D015 cumulative power monitoring function is selected, the inverter displays the
cumulative value of electric power input to the inverter. You can also convert the value to other
engineering units by setting the related parameter gain (B079 cumulative input power display
gain setting). The gain can be set within the range of 1 to 1000 (resolution = 1).
There are two ways to clear the cumulative power data:
• Set B078 = 01 and press the STR key on the digital operator.
• Configure an intelligent input for the [KHC] function (option code = 53). Turn ON the input
to clear the cumulative power data.
When B079 cumulative input power display gain setting = 1000, cumulative power data up to
999000 kW/h can be displayed.
Torque command input
Intelligent input
[ATR]
Σ
Torque bias
Σ
+
+
+
+
Torque command
(inverter output)
Σ
+
–
Speed limit
Measured
speed
Speed
comparator
Speed
control
Opt. Code
53
Symbol
[KHC]
Valid for
Inputs
[1] to [8]
Required
Settings
B078, B079
Monitor
Settings
D015
Default
terminal
Requires
config.