5.3 Description of Function Codes
5-99
FUNCTION CODES
Chap 5
F80
Switching between ND,HD,HND and HHD drive modes
ND is the standard mode for specifications other than J (for Japanese) model, therefore, it is possible to alleviate
ambient temperature condition and increase overload capability by switching to HHD/HND/HD modes. However,
rated current (applicable motor capacity) becomes one or two frames lower.
To change the data of function code F80 data, double key operation with “ key + / key” is necessary.
F80 data Drive mode Application Rated current level
Ambient
temperature
Overload
capability
Maximum
output
frequency
0 HHD mode Heavy load
Capable of driving a motor
whose capacity is the same
as the inverter capacity.
50°C
(122°F)
150% 1min,
200% 0.5s
500Hz
1 HND mode Light load
Capable of driving a motor
whose capacity is one rank
higher than the inverter
capacity.
50°C
(122°F)
120% 1 min 500Hz
3 HD mode Medium load
Capable of driving a motor
whose capacity is one rank
higher than the inverter
capacity.
40°C
(104°F)
150% 1 min 500Hz
4 ND mode Light load
Capable of driving a motor
whose capacity is two ranks
higher than the inverter
capacity.
40°C
(104°F)
120% 1 min 120Hz
For the concrete rated current level, refer to Chapter 12 “SPECIFICATIONS.” Factory defaults are 0: HHD for
Japan and 4: ND for other countries.
When, by changing the mode, the motor capacity becomes 75kW or higher, make sure to connect direct
current reactor (DCR) according to the motor capacity. However, it is not necessary when using PWM
converter.
ND, HD, HND, and HHD-mode inverters are subject to restrictions on the function code data setting range and
internal processing as listed below.
Function code Name Remarks
F21 DC braking 1 (Braking level) Upper limit restriction
F26 Motor sound (Carrier frequency) Upper limit restriction
F44 Current limiter (Level) Default setting, setting value
F03 Maximum frequency Allowed output frequency range
A10 DC braking 2 (Braking level) Upper limit
J68 Brake Signal Brake-release current Upper limit
Refer to explanation of each function code and selection guidance in Chapter 10 “10.4.2 Guideline for selecting
inverter drive mode and capacity.”
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