SUNFAR C300 49
C300 series of non-sensor current vector-control inverter manual
motor is always below rated load, if not, you can’t implement the process.
(Reserved)
Self-determination function of synthesis: firstly, inverter implements motor’s static
self-determination, then, it runs the process of starting the dynamic
self-determination and then stop automatically.
(Reserved)
Attention: If motor, with inverter not connecting correctly, the process of
self-determination will stop, while display the signal Fu.30～Fu.33.
(Refer to the seventh chapter: Fault Diagnosis and Countermeasures)
]
Those parameters are used for defining pre-excitation of motor startup.
It need some time to set motor air-gas flux (approximate rotor time). In order to get
enough start torque, it must set air-gas flux beforehand when motor is stop but it
will start.
Those parameters will valid while inverter takes vector control method only.
parameters[F1.21] （set by binary system）
The first part of LED (form right to left): To start Pre-excitation
0：To start Pre-excitation is invalid.
It isn’t needed to set air-gas flux beforehand when motor is from stopping to
starting.
1： To start pre-excitation is valid
To give motor a pre-excitation before it startup, Pre-excitation of starting time is set
by parameter [F1.22].
The second part of LED (form right to left): zero-freq. excitation preparation
0： Prepare pre-excitation is invalid when zero frequency
When inverter’s Instruction is running, but the output freq. is 0, inverter will close
off output power and the stator current of motor is 0.
1：Prepare pre-excitation is valid when zero frequency
F1.21 Selection of starting pre-excitation Setting range： 0000 ~ 0011
F1.22 Pre-excitation of starting time Setting range： 0.10 ~ 2.00 Sec
When capacity of applied motor is equally match inverters, user start function of
Parameters self-determination is not necessary.
If motor isn’t connect with inverter correctly, self-determination will stop and LED
of inverter will show fault Fu.30～Fu.33.
In order to achieve vector control, inverter will forcibly give motor an excitation
current, even parameter F1.21 is set 0.
To Next Page
Loading...
Need help?
General
