Help with brushless commutation

[sjkdoglvr]

Greetings, I have an older model Sanyo Denki 3.7kW brushless servo motor, M/N 20BM330MXPT4. It has never been used. My goal is to find a new amplifier that can operate this motor. It has a 5000 PPR quadrature encoder attached.

What I didnt realize when I bought the motor is that it has (what I assume) is a circuit board in the motor terminal box for hall effect sensors. Does anyone recognize this board and can you tell me what the terminals on TB1 represent?
They are H, G, A, B, C, F, E, N, M

Can I commutate this motor using only the 5000ppr encoder or must I use the hall sensors?

The second picture, shows the info found on a sticker on the motor, 493 ETG= and 5.93V / 1500RPM. What does this info mean and how would it effect my amp selection? I know the motor is rated 1500RPM

I have not been succesfull in getting info on this from Sanyo Denki because of it's age and it being a proprietary motor made for Toyoda.

Thank you for your knowledge and reply!

[Al_The_Man]

The ETG= 5.93/1500 rpm appears to refer to a feedback device similar to a tach, this is the output per 1500rpm.
Normally a BLDC motor does not have a tach.
Also being a BLDC motor, I would be suprised if it were limited to 1500 rpm, these motors can typically go up to 6000rpm and higher?
If you want a step/dir controller that uses encoder for commutation, Granite devices have a drive that does.
Al.

[sjkdoglvr]

Al, do you think the 5.93V is what I would see produced on the windings if i spun the motor at 1500rpm? Thanks for your reply, Steve

[Al_The_Man]

I am not sure what the ETG stands for other than Electrical/(Electronic) Tach Generator?
If you rotated the armature you would see a generated signal that was approximately proportional to what the applied voltage would be for the same rpm.
Al.