SOLO Communication Manual - UART and USB
www.solomotorcontrollers.com
September 2021 - Revision V_1.0.1 Copyright © 2021, All right Reversed. SOLO motor controllers.
72
Digital sensorless closed-loop speed Control of an AC Induction
Motor
Before sending the following commands you must do the following steps at least once:
1. Turn ON SOLO
2. Put SOLO in closed-loop (using Piano switch on SOLO UNO or Control Mode Switch on SOLO
MINI)
3. Make sure the motor Identification is done.
As long as the piano switch number 5 is DOWN in SOLO UNO or the Control Mode Switch on
SOLO MINI is on C.L, you can send the following commands in order to control the torque of
your brushless Motor. Also after power recycling you don’t need to repeat this part again, just
leave the configurations as mentioned in closed-loop mode as long as your motor and the system
are the same.
1- Set Motor Type (ACIM)
FF FF 00 15 00 00 00 02 00 FE
2- Set the Motor No of Poles at 4
FF FF 00 0F 00 00 00 04 00 FE
3- set the speed Kp gain on 0.008 [Sfxt(32-17)]
FF FF 00 0A 00 00 04 18 00 FE
4- Set the speed ki gain on 0.005 [Sfxt(32-17)]
FF FF 00 0B 00 00 04 18 00 FE
5- Set the Speed Control Mode on sensor-less
FF FF 00 13 00 00 00 00 00 FE
6- Set control Mode on SPEED
FF FF 00 16 00 00 00 00 00 FE
7- Go to digital Mode
FF FF 00 02 00 00 00 01 00 FE
8- Set the Magnetizing current reference (Id) at 1.8A [Sfxt(32-17)]
FF FF 00 1A 00 03 99 99 00 FE
9- Set the speed ref at 1000 rpm (Uint32)
FF FF 00 05 00 00 03 E8 00 FE
- Using the command set in step 9, you can define any arbitrary speed for your motor to
reach and follow in real-time
- The magnetizing Current for AC induction motors set at step 8, is in charge of generating
flux on the stator, so the higher this value the more will be the flux but you need to find a
proper balance based on your Motor.
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