If other than “0: 4 to 20 mA Unipolar” is set to Input Terminal [AI2] Operation Selection (AII) (C40), this
function does not operate.
Parameter No. Function name Data
Default da-
ta
Unit
H91
Current Input Wire Break
Detection
0.0: Disable alarm detection
0.1 to 60.0: Issue alarm after set time
0.0 s
7-9-14
Automatic Energy-saving Operation Function
This function automatically adjusts the inverter output power during constant speed operation to the
minimum level. It is suitable for load with reduced torque characteristics, such as fans and pumps.
To perform energy-saving operation using this function, set Energy-saving Operation Function Selec-
tion (E124) to “1: Energy-saving operation.”
When the automatic energy-saving operation is enabled, it is possible to select Enable during running
at constant speed, and Enable during running at constant speed and acceleration/deceleration with
Auto Energy Saving Operation Condition Selection (H67).
Because this function controls the output power to the minimum necessary level, the motor may stall if
the rapid load fluctuation, such as impact load, occurs, which may result in an overcurrent trip.
Parameter No. Function name Data
Default da-
ta
Unit
E124
Energy-saving Operation
Function Selection
0: Disable energy-saving operation
0 -
1: Energy-saving operation
H67
Auto Energy Saving Oper-
ation Condition Selection
0: Enable only at constant speed
0 -
1: Enable in all modes
7-9-15
Commercial Switching (CS)
Commercial operation and inverter operation are switched by the “CS” terminal (15: Commercial
switch).
When switching between commercial operation/inverter operation is performed in an external se-
quence, input the CS allocated to multifunction input in accordance with the operation chart below.
Then, the inverter can be started from the commercial power supply frequency regardless of the set
frequency of the inverter, and the motor during the commercial operation can be smoothly switched to
inverter operation.
This function is enabled when Drive Control Selection (F42/A14) = “0, 1, 3, 4.”
When the power supply frequency is 50 Hz, use “15: CS” and when the power supply frequency is 60
Hz, use “16: SW60.”
Parameter No. Function name Data Default data Unit
F42/A14
1st Drive Control
Selection/2nd Drive Control
Selection
0: IM V/f control
1: IM Dynamic torque vector con-
trol
3: IM V/f control with speed sen-
sor
4: IM Dynamic torque vector con-
trol with speed sensor
- -
7 Other Functions
7-141
M1 Series Standard Type User's Manual (I669)
7-9 Other Operation Functions
7
7-9-14 Automatic Energy-saving Operation Function
To Next Page
Loading...
Need help?
General
