Vexta KBL Drives & Motors Info

[john.charles]

For those that would find it uesfull, please find atached a pdf file on the Vexta KBL Drives and motors.

Also copied from other posts on this topic are listed below.

The wire connections are corect as far as I found

Looking at the front of the drive pins are as


14 13 12 11 10 9 8
7 6 5 4 3 2 1

1 motor power
2 n/c
3
4 ground
5 +5v
6 enc open ended
7 enc open ended
8 motor power
9 motor power
10 break
11 break
12 hall
13 hall
14 hall

I found the only way to enable the drive (KBLDE 120) was to connect both (start/stop) and (break/start) to input ground, then connecting / disconecting break start/stop starts and stops the motor.

motor phases must be correct and hall input wires. Trial and error worked fine for me.

This is not perfect by any means but it will get things going and allow other testing

Best wishes to all

John


Below copied from other membes posts

Got a motor on Ebay, opened it up. Here is the motor connector pin number, wire color, and when we follow the wire to its terminal inside the motor we find a label printed on the pcb or terminal board as shown:
# Color Label
1 Yel/Blue Y
2 Red/Blue R
3 White/Blue W
4 Black/Blue K
5 clear (no connect drain wire)
6 no wire
7 White A
8 Blue B
9 Green Z
10 Orange U
11 Yel/Blue Y
12 Yellow V
13 Gray W
14 Black G
15 Red V

The wires with the blue stripes appear to be motor phases, labelled K,W,R.
The red and black wires labelled V and G are power to the Hall/encoder pcb.
My guess is that A,B,Z are encoder A, B, and index signals, and that U,V,W are Hall signals. Also guess that the pair of yellow/blue wires, both labelled Y, are for the brake.

On BLD and KBLD drives, the motor cable goes to a two-row, 14-pin connector, as follows.
# Color name/function
1 Red/Blue phase R
2 Green encoder? Z
3 clear drain
4 Black encoder/Hall power ground
5 Red encoder/Hall power
6 White encoder? A
7 Blue encoder? B
8 White/Blue phase W
9 Black/Blue phase K
10 Yel/Blue brake? Y
11 Yel/Blue brake? Y
12 Orange Hall? U
13 Yellow Hall? V
14 Gray Hall? W



The mating cable connector for the drive is the AMP 770582-1.

Inside the drive, the 14 pin "motor" connector is mounted directly to the pcb. Pins 1,8, and 9 are motor (phase A,B,C) connections from the drive to the motor; the pcb silkscreen labels have oriental figures so I can't tell which is A, which is B, which is C. I don't know if Vexta used a color code for A,B,C, but anyway the jumper wires across the circuitry are Pin 1 = Red, Pin 8 = White, Pin 9 = Blue. Pins 3 and 4 are Ground. Pin 5 is +5V. Pins 6, 7, 12, 13, 14 are inputs from the motor to the controller. Pins 10 and 11 connect to something over in the AC-to-DC power supply section of the circuit board; the cathodes of diodes D7,D8,D9 are tied together and go to pin 10, pin 11 seems to be a current return going back to a thermistor-looking component NR1, the other side of this connects to the anode of D7. I am guessing that pins 10 and 11 provide a current to release the motor brake, or I suppose it could be a back-EMF protection circuit. Pin 2 appears to be unconnected.

The motor literature says these motors have 400 pulse/rev encoder, so it is my guess that the 5 input signals are three single-ended Hall feedback and two single-ended quadrature encoder feedback signals.

All 5 of these input signals (pins 6,7,12,13,14) go to similar termination networks on the pcb. The circuitry from each signal pin consists of a 470 ohm resistor, 220 ohm resistor, and a 1000pF capacitor. The 470 is a pullup to 5V, the input signal connects to the junction of the 470 and 220 resistors. The 1000pF capacitor connects from ground to the other end of the 220 ohm resistor. The node at the junction of the 220 ohm resistor and the 1000pF cap then connects to a pin on a 42-pin DIP which is labelled "Vexta EIC6012", my guess its a custom-coded Zilog microprocessor because in little letters I see "Z80" written on it too. The signal from connector pin 6 goes to this chip at its pin 2, connector pin 7 goes to chip pin 3, connector pin 12 goes to chip pin 4, connector pin 13 goes to chip pin 5, connector pin 14 goes to chip pin 6. This information is useless to me because I can find no specs for this chip, maybe somebody reading this can make use of it.