OMRON Sysdrive 3G3HV - Detector Cooling Section

• For example, set n048 to 0 and n049 to 0.30 when connecting multifunction
analog output terminals AM and AC to a frequency meter that
operates at 3 V maximum. Refer to the following diagram.
Analog Output
10 V
Default set
Frequency meter
(FS: 1 mA at 3 V)
3 V
Maximum frequency
n050
Carrier Frequency
Setting range 1 to 9 Unit --- Default setting
See note
Note The default-set value of n096 varies with the Inverter model.
Set Values
• Set the switching frequency (carrier frequency) of the output transistor
of the Inverter with n050.
• The noise generation and current leakage of the Inverter will be low if
the carrier frequency is set low, in which case, the motor will generate
a more metallic noise.
Set
Description
value
1 2.5 kHz
2 5.0 kHz
3 8.0 kHz
4 10.0 kHz
5 12.5 kHz
6 15.0 kHz
7 to 9 Varies in proportion to output frequency up to 2.5 kHz. (Refer to the following graphs)
Note
Note
1. The carrier frequency setting range varies depending on the Inverter capacity.
200-V class and 400-V class, 22 kW max.: 15.0 kHz max.
200-V class, 30 to 75 kW; 400-V class, 30 to 160 kW: 10.0 kHz max.
400-V class, 185 to 300 kW: 2.5 kHz max.
2. For a 400-V Inverter, if the carrier frequency is set to a value higher than the default
setting, the Inverter overload “OL2” detection value will decrease in consideration of
an increase in the heat that will be generated by the change in the carrier frequency. If
the Inverter overload “OL2” is detected prior to the motor overload “OL1,” set the carrier
frequency to a lower level by one rank. (The detection value decreases by
approximately 15% for every change to a higher rank.)