Omron 3G3M1-A4110-ECT User Manual

6-12
Measures Against Overvoltage
6-12-1
Regenerative Braking Function
• During motor deceleration and elevator descent, regenerative energy sometimes is returned to the
inverter and an overvoltage is detected due to an excessive regenerative amount.
• The regenerative braking function uses the built-in or an external regenerative braking resistor to de-
crease the internal Main Circuit DC Voltage of the inverter by converting the regenerated energy
from the motor into heat via external braking resistors.
• The 3G3M1 Series has a built-in regenerative braking circuit and a regenerative braking function op-
erates at all times regardless of whether the inverter is running or has stopped.
6-12-2
Braking Resistor Electronic Thermal Function
• Either use a braking resistor with thermal contact or use the braking resistor electronic thermal func-
tion for overheat protection of the external braking resistor.
• Use the braking resistor electronic thermal function by setting each of Electronic Thermal for Braking
Resistor Discharging Capacity (3004Hex-33Hex), Electronic Thermal for Braking Resistor Allowable
Average Loss (3004Hex-34Hex) and Braking Resistor Resistance (3004Hex-35Hex). These values
are determined by inverter model and type of braking resistor.
• To use the regenerative braking function, set Anti-regenerative Control Function Selection
(3008Hex-46Hex) to “0: Disable.”
Parameter No. Function name Data Default data Unit
3004Hex-33Hex
Electronic Thermal for Braking
Resistor Discharging Capacity
1 to 9000
32767: Disable
32767 kWs
3004Hex-34Hex
Electronic Thermal for Braking
Resistor Allowable A
verage
Loss
0.001 to 99.99 0.001
kW
3004Hex-35Hex Braking Resistor Resistance 0.01 to 999 0.01 Ω
3017Hex-3EHex
Braking Resistor Thermal
Monitor
0.0 to 100.0 0.0 %
Related function Anti-regenerative Control Function Selection
(3008Hex-46Hex)
• Set the Electronic Thermal for Braking Resistor Discharging Capacity (3004Hex-33Hex) and Elec-
tronic Thermal for Braking Resistor Allowable Average Loss (3004Hex-34Hex) by the following for-
mula depending on how the braking load is applied.
6 Basic Settings
6-67
M1 Series EtherCAT Type User’s Manual (I670)
6-12 Measures Against Overvoltage
6
6-12-1 Regenerative Braking Function

Omron 3G3M1-A4110-ECT Specifications

General

Brand	Omron
Model	3G3M1-A4110-ECT
Category	Inverter
Language	English