SBL1360 - BLDC MOTOR PROBLEM

Dear all,

I am setting up a testing system using BLDC.
My setting contain:
1. BLDC motor 24VDC - 10A - 2.8Nm
2. SBL1360 driver
3. Autonics 5000 encoder

After setting up, I run Roboteq Unility in Closed Loop Speed Mode to test and see the problem:
- The motor run well at plus speed (velocity > 0)
- But it can not run at minus speed (velocity <0)

I try many times and only at big speed minus value (velocity < -100), the motor can run.
In the range from (-10 to -100), motor can not run although I encrease Kp and Ki.

Hope to receive all comments
Thanks!

Hi all,
It's okey now. 'cos of my mistake in hall sensor wiring connection.

But there is a BIG problem with DRIVER SBL1360 (firmware version 1.4 - 8/2014)
The decellation parameter in CLOSED LOOP COUNT MODE is NOT affect.

I have tried to set many values from 500RPM/s to 8000RPM/s. But nothing change. It's seem to be used predefined DC parameter in the firmware.

Can any technician answer me?

Thanks,

Hi sir,
I have downloaded the latest firmware and updated.
But deceleration time in closed loop position count mode is NOT affected.

I've even reduced the DC - time to 100 RPM/s. But nothing change.
It only can decelerate at DC = 10 or 20 RPM/s.

Please check again and report me!

Thanks a lot!

No, I haven´t. But why do I do that? I think ater updating new firmware all settings is reset to default.

Dear supporter,
I have reset driver after upload new firmware. But nothing change. The motor can only accelerate, it can not decelerate.
Beside, there is another big problem when I use SBL1360 to control Ketterer motor (a BLDC torque motor).
At the velocity from -200RPM to -135RPM, the motor can only run 800-1000 round. After that, it stop emergency and texhe motor current encrase very high (14 amperes)

Can you explain about two errors?

Thanks!

Dear sir,
It only get failure at speed from -200RPM to -135RPM.
At another speed range, it run well.

How to check to find exaclly reason? motor or driver bad at that speed range?

Thanks,