Micromaster 440

[dunia]

Hi every body,

Pls help me on How to change speed in micromaster 440 drive.

 

[ojz0r]

you have to give more information then that.
is it running on constant speed or are you using analog input?

 

[cagliostro]

Hi, if you need to increase or decrease the speed of the motor when Speed Set Point is 100%, then you need to change the parameter P1082 (default setting to 50Hz).
The range of P1082 is 0-650Hz.

Anyway I attach the follow picture about the P1082 data sheet for additional information.
It's extracted from the MM440 Parameters List Guide.


Regards

 

[icrazyboy]

hi,
i am new in this forum can any one help me how to increase frequency of seimens micromaster 440

 

[KalleOlsen]

Welcome to the forum.

I find your question a bit vague to be able to give a specific answer.

1: Which speed function is it?
A: Setpoint?
B: The max speed? (see post above from cagliostro)
C: The min speed?
D: The speed scale reference?
E: Other?

2: How do you want to change speed?
A: From the panel front?
B: From the digital inputs?
C: From the analog input?
D: From preselected setpoints?
E: Via USS?
F: Via Profibus?
G: Via Canbus?
H: Other?

Kalle

 

[icrazyboy]

max speed is 60hz, min 0 , in the panel showing 29.99 ..

i want to change through panel front.

 

[icrazyboy]

hi kalle,
i have checked through the panel front and found this reading
p0003=3
p0010=0
p0100=2
p0300=1
p0304=400v
p0305=5.6A
p0307=2.2kw
p0308=0.7pf
p0310=60HZ
p0311=1140rpm
p0700=6
p1000=6
p1080=10HZ
p1082=60HZ
p1120=120s
p1121=120s

please suggest me how can i change the current speed 30 HZ to 50 HZ.

 

[KalleOlsen]

Do you have the parameter manual?

P1000=6 means that the setpoint comes from the communication card, most likely a profibus card.
The speed must be changed from the (profi)bus master.

You can change the P1000 to another setpoint source, BUT THIS COULD BE DANGEROUS.

Kalle

Edit: What kind of machine is it? (conveyor, fan, pump, elevator...)

 

[icrazyboy]

thanks for your information, it is a fan motor, ....
Can u please suggest me how to change through the profibus master.

And please tell me what kind of failure it may happen if i change P1000 to another set point.

 

[bornwild]

Check you program. Which PlC are yo using? I think the speed refrence is coming from the program

 

[KalleOlsen]

thanks for your information, it is a fan motor, ....
Can u please suggest me how to change through the profibus master.

And please tell me what kind of failure it may happen if i change P1000 to another set point.

I agree with bornwild.

Why it can be dangerous? I have to assume that, since I don't know anything about your process.
Perhaps there are some unwanted actions starting if the PLC reads a speed above 30Hz.


If you are certain it will not damage anything, you can do a quick and dirty fix by changing the minium speed in P1080.

Kalle

Edit: Normally I would expect there is a PLC running as bus master, and that the fan is controlled by a PI(D) or by a fixed setpoint coming from an operator via an HMI screen.

If it's controlled from a PI(D), could one imagine that a pressure or temp. transmitter is malfunctioning, and your fan is running at the controllers' minimum speed?

 

[icrazyboy]

thanks kalle and bornwild for your support.

it is there in the HMI screen, i can increase the Frequency from the HMI .