Omron 3G3MX2-A2002-EV2 - Automatic Energy-Saving Operation Function; Commercial Switching (CS)

7 Other Functions
7 - 51
Multi-function Compact Inverter 3G3MX2-EV2 User’s Manual (I666-E1)
7-5-13 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 fan, pump, or other load that reduced torque characteristics.
To perform energy-saving operation using this function, set the Operation Mode Selection (A085) to 01
(Energy-saving operation).
You can adjust the response and accuracy of the function in the Energy-saving Response/Accuracy
Adjustment (A086).
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.
The automatic energy-saving operation function may not work sufficiently when the frequency refer-
ence source is set to Control circuit terminal block (Analog input). In this case, set the Analog Input Fil-
ter (A016) to 31 (500 ms).
Parameter
No.
Function name
Data
Default
data
Unit
A085
Operation Mode
Selection
00: Normal operation
01: Energy-saving operation
00
−
Parameter
No.
Function name
Data
Default
data
Unit
A086
Energy-saving
Response/Accuracy
Adjustment
0.0 to 100.0
(Response: Slow to Fast)
(Accuracy: High to Low)
50.0
%
7-5-14 Commercial Switching (CS)
Use this function to drive a system subject to a large load inertia moment during acceleration and
deceleration with the inverter and during constant speed operation with a commercial power supply,
respectively.
Allocate the Multi-function Input 1 to 7 Selection (C001 to C007) to 14 (CS).
Parameter
No.
Function name
Data
Default
data
Unit
C001 to
C007
Multi-function Input 1
to 7 Selection
14: CS (Commercial switching)
−
−
Related functions
b003, b007
Follow the sequence diagram given below to switch among the terminals MC1 to MC3, FW, and CS.
When the terminal CS turns ON, the inverter shuts off its output and the motor falls in a free-run state.
Follow the sequence diagram given below to switch among the terminals MC1 to MC3 and, with the
RUN command and CS input ON, turn the terminal CS from ON to OFF. Then, when the Restart
Standby Time (b003) elapses, the Inverter will execute frequency pull-in restart from the frequency at
which the Inverter output was shut off.