produce maximum from motor

[idoko10]

Hi

i have the QSH4218-51-10-049 motor
this motor suppose to produce 0.49[Nm], in my test I success to produce only 0.28[Nm].
in TMCL I defined max current as 1000[mA] (SAP 6,0,1000) and still get only 60% of the motor power
what else can I do?

thanks
Ido

[Olav Kahlbaum (TRINAMIC)]

The maximum current of a motor is given as RMS value, whereas the maximum current of a motor control module is given as peak value. So please try setting the current to a higher value than 1000 (up to 1500).
Which module are you using?

[idoko10]

I am using TMCM-310, I tried to set it to a greater current than 1000 [mA] but
the motor didn't rotate well.
do you have another suggestion ?

[Olav Kahlbaum (TRINAMIC)]

What do you mean with "didn't rotate well"? It is also a matter of the speed you are using. Please try also switching on mixed decay (by setting axis parameter 203 to -1).

[idoko10]

I set max current to 1500[mA] and mix decay to -1 and it is reach more power but not enough because
the moment according to Trinamic user manual is 0.49[Nm] and I reached only 0.4[Nm]
what else can I do?

[Olav Kahlbaum (TRINAMIC)]

How high is your supply voltage? It should be as high as possible (e.g. 24V).

[idoko10]

it is set to 24V

[TRINAMIC_BD]

The motor torque always is given at stand still and in fullstep position (both coils at identical current). Therefore, you could switch the module to fullstepping mode. If you need maximum stand still torque, you would need to switch stand still current to a 1A RMS, also.

[Olav Kahlbaum (TRINAMIC)]

For switching to fullstep mode (if really needed), please use parameter 211 (fullstep threshold). Please do not set the microstep resolution to 0, as this would give you a kind of microstepping with one microstep per full step, which is not the same as real full stepping operation.

[idoko10]

I am sorry but I can't run the motor on max load as it should be.
can you write for me the exact steps that I need to do (or code) to produce
max torque from my motors?

best regards
ido

[Olav Kahlbaum (TRINAMIC)]

First step: SAP 6, 0, 1500 to set maximum current on motor #0 (SAP 6, 1, 1500 for motor #1 and SAP 6, 2, 1500 for motor #2).
You can try full step operation if this should not be enough torque: SAP 211, 0, 1 for motor #0 (SAP 211, 1, 1 for motor #1 and SAP 211, 2, 1 for motor #2).