KT48ZWSRM-HY02L - characteristics?

[danielrlee]

There appears to be a bit of misunderstanding about KT controllers in this thread.

SVPR – sine wave
ZWSR – square wave

KT sine wave (SVPR) controllers are only available for sensored motors.

KT square wave (ZWSR) controllers are available for sensored, sensorless and dual-mode (both sensored and sensorless) operation.

 

[PC2017]

Some controller can be dual mode

Yep apologies I get it - I suppose I should practice what I preach about doing extensive research - So one would deduce, if your controller is dual mode(hall sensor and un-sensored) but your motor was hall sensored you would get a hall sensor error if the motor sensors fail as your motor is not a non hall sensored motor it would not operate as one if the sensors did fail... correct me I am wrong

 

[danielrlee]

Yep apologies I get it - I suppose I should practice what I preach about doing extensive research - So one would deduce, if your controller is dual mode(hall sensor and un-sensored) but your motor was hall sensored you would get a hall sensor error if the motor sensors fail as your motor is not a non hall sensored motor it would not operate as one if the sensors did fail... correct me I am wrong

A sensored motor can be paired with any of the above controllers - sensored, sensorless or dual-mode. There is no difference between sensored and sensorless motors, apart from the presence of hall sensors and the associated connector.

In the specific example you give, a dual-mode controller should revert to sensorless operation in the event that your motor's hall sensors fail.

 

[Nealh]

The newer KT software L parameters has a setting should there be no halls or a hall failure. L3/1 is default L3/0 for no hall setting.

End of the day if OP orders/buys the kit he linked to it will work for sure.

 

[Chees]

Thanks all. Agree that if I buy the kit it will work.

At this point I was just checking whether there is optionality for the future. That is, can I switch to a sine wave in future with minimal additional purchase (only a new controller)? From the discussion it looks like is possible but depends on the components I'm supplied. That means that only the seller can confirm for me, and they have shown some tendency to make mistakes with the specs so I don't know if I can trust them to get this right.

In the end it sounds like there isn't much difference between sine/square anyway so I may as well take the plunge, though would gladly check out any referral to a reputable seller that does sell a complete kit including sine wave controller (48v, geared, rear hub, cassette).

 

[manman94]

I have to disagree about all square wave controllers being sensorless. I can find all kinds of square wave controllers on ebay (USA) with Hall connectprs. I understand PSWpower only shows sensorless square wave boxes with torque simulation. Yes, I agree anything with only three motor wires is sensorless. I have a BSMbattery P06 that is sensorless.

In 2017, I built two Q100H bikes using the KT36/48ZWSRD-SL02G 20A controller and also the KT36/48SVPRD 20A controller, square and sine wave, Both featured Hall connectors. I have verified that the square wave model won't run if I break the Hall Sensor connections. It throws an Error 03 which is a Hall Sensor problem.

I also have a KT36ZWSR-LCD from 2016 that is square wave, and sensored.

Yes I agree all my KT. Controller s have 6 wires for HALS and 3 separate phase wires ,but on one controller I have WP connector with 9pins so mine are all sensored and all are square wave.