static torque

Hello mourad76,

P1610 adjusts the static torque set point by a percentage of the rated motor torque for motor (i.e. r033).

Best Regards,

Deputy

torque=Id*Iq*cos (@) when i increase p1610 which current increase id or iq ?and what is the limit

is p1610 like p1310,p1311,p1312 in effect?

ok i really use SLVC and i have small problem. when i start to raise a load(in limit) the load wants to fall

when i increase p1610 the situation is improved but in low frequency(0 to 100 hz) the problem is still

i try to increase p1610 again but no effect .

as your attached photo if increase p1611 is it affect? i need a solution

if i skip low speed(o to 100 hz) every thing ok but sometimes i need this low speed

With SLVC, it only has effect at low speed when the motor model is not effective (<10% speed).  If you have problems, then I would suspect that your motor parameters are off and that you perform a static measurement, turning measurement again.

If you really need control of torque at very low speed, then you need an encoder.  Sorry.  All manufacturer's vector control fail at very low speeds since the model parameters at low speeds are not valid. 

thank you very much for your reply.

if i change the mode from SLVC to V/F is this benefit and over come the problem?

if yes what are parameters which must be changed?

Since I have no idea what you are trying to accomplish, the answer is I don't know. 

Unless this is a pump or a fan, then SLVC is the best option.  Speed control for SLVC is at best good for 5:1 speed control.  If you need something better, then you need an encoder on the motor.  Looks to me like someone underspecified the control system requirements.