DC motor drivers wanted (above 10A) kits or assembled

Falls jemand mal günstige DC Motortreiber findet, dann bitte hier posten. Vorrausgesetzt sie sind für mindestens 10A im Dauerbetrieb geeignet.

Ein gutes Beispiel hierfür wäre z.B das Simple-H
http://www.robotpower.com/products/simple-h_info.html

Wer sowas, nur günstiger, findet, dann bitte hier posten. Auch Bausätze!

Gruss
ego

EDIT: Keine Ahnung was die Teile hier kosten? 120 Reichsmark?
http://www.cytron.com.my/listProductCategory.asp?cid=93

ego
RM = Ringgit Malaysia approx $RM 3.40 = $US 1.0

Yes I have the simple-H controller and I can say RobotPower were very quick to send them.

I am also looking at getting this board
http://www.oceancontrols.com.au/motor_c ... ollers.htm

KT-5198 Dual Bidirectional DC Motor Speed Controller
This Motor Speed Controller allows a user to control the speed of up to two DC Motors independently, using an analog 0-5V signal, potentiometers, serial port of a PC or 1-2mS RC Pulse.
The maximum voltage available to run the motor is 50VDC.
Current: The IRFZ44 MOSFET can handle 49A; the IRF4905 can handle 74A. However the PCB tracks that run from the MOSFET pins to the screw terminal block can only handle around 10A.

Hi Evan

What I dont like with the simple-H driver, is that the IC on it, the BTS7960B, seems to be unavailable on the market. Perhaps it isnt sold anymore?

Those controllers are great! Up to 49A, and for this wonderful price! And the option to purchase it assembled or as a kit!

Thank you for this superb link!

The simple-H is not bad, as well, but compared to those of oceancontrols...

regards
ego

@Evan
120RM = 35 Dollar = 25 Euro. That is a good price as well

ego
I have bought parts off them in the past and know they are good people to deal with.
I was deliberating on getting 2 of the boards from Oceancontrol for future 4 axis.
Do you think X-Sim software will work with 1 of these boards as it is? I am not sure how to interface the pot control with it, maybe it is something it is not capable of by itself.
EvanF

hmm, oceancontrols website tells us:

Yes but I have also read elsewhere that it is only the PCB track (rated at 10amp) between the MOSFETs and the terminal block (rated at around 20A). They suggest if you want to make full use of the MOSFET capability to solder heavy duty cable to a new set of terminals and use a cooling fan.

I would like to use the drivers with the DIY hydranite controller. The hydranite has already a PWM output, and everything what is needed to work with X-Sim, because Sirnoname has invented it
BTW, the hydranite has an encoder input channel.

The motor drivers that Thanos uses, the parallay HB-25 controllers have a controlling unit integrated, but this is useless for our purposes with the hydranite.

hmm, they could have made the PCB tracks thicker!?^^

But I like the TO-220 Package of the Mosfets. Do you think that there are no SMD ICs on the back side of the PCB?

I like the sound of this Hydranite controller. The encoder input channel, does this take analogue pot as well as digital?

So my RobotPower boards would be okay to use with Hydranite then? I just thought with the oceancontrol board I may have the serial interface com port convenience.

Afaik the motor driver could be connected directly to the pwm output of the hydranite.
No need for serial port, or usb, or RS323

I'll try to find it out...

Part list for Oceancontrol controller.
...
BC546 NPN Transistor Q9-Q12 4
IRFZ44N N-Channel MOSFET Q1, Q3, Q5, Q7 4
IRF4905 P-Channel MOSFET Q2, Q4, Q6, Q8 4
ATMega168 IC Programmed U1 1
74HC08 U2 1
MAX232 U3 1
...
KT_5198_Dual_Bidirectional_DC_Manual.pdf (208.15 KB)


The Robot Power Simple H uses Infineon Technologies (Siemens AG, Munich Germany) BTS7960B which are automobile grade motordrive powerchips. You shouldn't have a problem sourcing spares in Germany?! :wink:

I've red some guys complaining about the unavailability of those ICs in the roboternetz.de forum. However...

Yes there are a lot of H-Bridge designs out there, and I guess there are cheaper assembled ones you could source from Asia ... like the one you discovered in Malaysia. From experience, if bought from China one would have to question it's reliability, having said that, Malaysia does have higher manufacturing standards! :lol:

Robot Power supply the power-chip for US$12 and openly say you can use their circuit design for private use if you don't want to buy a pre-assembled one.
simple_h_v14_schematic.pdf (177.49 KB)

@Evan

The oceancontrolls KT-5198 driver

I wonder there are no additional diodes in the bridge circuit, as I've read that the diodes, that are built-in in the mosfests, would have a slow switching time, wich causes that motor current, when the motor is in braking or fast direction change sequence, could pass through the mosfets, and destroy or interrupt the circuit behind.
As well I cannot see in the manual, if a braking mode is available.

The simple-h driver

This driver has a braking mode. It is, like his name, very simple, but has all features we need to operate with the hydranite.
But, the downer is, that when operated in full-h-bridge (bi-directional) mode, only one motor can be connect to one board. Unlike the oceancontrols driver.

I dont know which driver is the better one for our purposes, still.

BTW, the malaysian one is not bad as well.

ego

Die würde mir auch zusagen, aber ist afaik leider nicht (mehr) als Bausatz erhältlich.

@ egoexpress

Ocean Controls:
Isn't it just a case of soldering extra diodes across the FETs to prevent back emf? Do you think there is a noticeable difference in switching speed if you did this? I will ask them if braking is a feature of the board.

Simple-H:
Seeing as I already have 3, I am only too happy to trial 2 of them with the Hydranite board :wink:

Us kiwi's are reknown for trial and error and a 'she'll be right!' attitude!

evanF

Zur Not könnte man den Treiber mit nem Peltier Element kühlen.

Nein, das ist keine Science-Fiction

Gibt es z.B. hier:
http://www.peltierelement.de/shop/formular.php

Ich will aber hier jetzt keinen Peltier-Thread starten. Wen es interessiert -> dann in die OT

Mit der Aussicht auf einen Leistungssprung durch Kühlung, wird mir der kleine Treiber recht sympathisch. Der Preis ist auch super.

Aber, für die meisten ist das Löten des VNH* Chips eine recht kniffelige Sache. Nunja, die Chips gibt es auch einzeln zu kaufen, wenn mal was schief geht

Ich weiß auch nicht wie komptibel der hydranite dann letztendlich mit verschiedenen Treibern wäre. Dazu würde ich gerne mal Sirnonames Meinung erfahren.

Also ob es dann egal wäre, ob man nun den simple-h, oder den RN Treiber nimmt, oder ob es eine aufwändige Abstimmung wäre, die Sirnoname nur bei einem einzigen Treiber würde/machen will.

Gruss
ego