Emheater EM12 Series, User Manual

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5.Description of Function Codes EM12 User's Manual
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value of this parameter.
The output frequency of the EM12 can reach up to 3000 Hz. To take both frequency reference resolution and
frequency input range into consideration, you can set the number of decimal places for frequency reference in b0-11.

If b0-11 is set to 1, the frequency reference resolution is 0.1 Hz. In this case, the setting range of b0-13 is 50.0 to
3000.0 Hz.

If b0-11 is set to 2, the frequency reference resolution is 0.01 Hz. In this case, the setting range of b0-13 is 50.00 to
300.00 Hz.
Note: After the value of b0-11 is modified, the frequency resolution of all frequency related function codes change
accordingly.
b0-14
Record of digital setting frequency of power failure Default 0
Setting
Range
0 Set by (b0-15)
1 AI1
2 AI2
3 AI3
4 Pulse setting (HDI)
5 Communication setting
It is used to set the source of the frequency upper limit, including digital setting (b0-15), AI, pulse setting or
communication setting. If the frequency upper limit is set by means of AI1, AI2, AI3, HDI or communication, the
setting is similar to that of the main frequency source X. For details, see the description of b0-03.
For example, to avoid runaway in torque control mode in winding machine application, you can set the frequency
upper limit by means of analog input. When the frequency inverter reaches the upper limit, it will run at this limited
speed.
b0-15
Frequency upper limit Default 50.00 Hz
Setting Range Frequency lower limit (b0-17)~maximum frequency (b0-13)
This parameter is used to set the frequency upper limit.
b0-16
Frequency upper limit offset
Default
0.00 Hz
Setting Range 0.00 Hz~ maximum frequency(b0-13)
If the source of the frequency upper limit is analog input or pulse setting, the final frequency upper limit is obtained
by adding the offset in this parameter to the frequency upper limit set in b0-14.
b0-17
Frequency lower limit Default 0.00 Hz
Setting Range 0.00 Hz ~frequency upper limit(b0-15)
If the frequency command is lower than the value of b0-17, the frequency inverter can stop, or run at the frequency
lower limit, or run at zero speed. The result can be determined by b2-17(setting frequency lower than frequency
lower limit running mode).
b0-18
Rotation direction
Default
0
Setting
Range
0 Forward direction
1 Reverse direction
You can change the rotation direction of the motor just by modifying this parameter without changing the motor
wiring. Modifying this parameter is equivalent to exchanging any two phase of the motor's U, V, W wires.
Note:
The motor will restore original running direction after parameter initialization (A0-09). Do not use this function in
applications where changing the rotating direction of the motor is prohibited after system commissioning is
complete.
b0-19
Base frequency for UP/ DOWN modification during running Default 0
Setting
Range
0 Running frequency
1 Setting frequency
This parameter is valid only when the frequency source is digital setting.
It is used to set the base frequency to be modified by using keys
▲
and
▼
or the terminal UP/DOWN function. If the