Question AASD15A direction

I'm trying to control an AASD15A with a 750W AC Servo motor and a 50:1 reduction gear, from a Controllino (an PLC style Arduino Mega clone). I’m struggling with some issues I hope others in the forum have seen before.

In the drive I have reset all setting to default values and set the following:
PN002 = 2 (location mode)
PN098 = 40

My connections in the DB25 connector are:
Pin 3 – pulse signal
Pin 4 – Direction
Pin 5 – GND
Pin 6 – GND (Enable)
Pin 9 – 24V
Pin 10 – GND
Pin 14 - GND

My signal send 6250 pulses and this makes the gear axis turn 180 degrees. 6250 x 40 / 10000 = 25 rotations of the motor and 0,5 rotation of the gear output axis.

The Drive reports the frequency to be 16 kHz (DN006).

1. Direction
The problem is that a few days ago the direction was working fine. I had the motor running both CW and CCW as commanded on the PD+ on pin 4. Over night it stopped. Now I can only run the motor in the same direction regardless of the Direction command.

I have tested that the output is set and reset. I have tested the connection and measured the signal directly on the DB25 connection at the AASD15A. 0V when supposed to go CW and 24V when supposed to go CCW – but the drive continues in the same direction.

2. Sigout - servo enable
The manual I got is in Chinese together with an English translation and sometimes it is rather difficult to understand the meaning.
DN015 can show the output signals Sigout 1-5
Sigout1 (Servo enable) is low all the time – even when I remove the SigIn1 (servo enable) - I can hear the motor stops humming, but the Sigout1 is still low.

Does anyone have any ideas on what I missed?

Hello Juhl,
look at the parameter PN096 "The command pulse input mode". The value should be 0 "Pulse + Direction". If you set this parameter to 1 "Forward/reverse pulse" you get your described behavior.
Best regards
Franky

Hello Juhl,
i take another look in the user manual. I think you have destroyed the opto coupler of input PD+. The inputs PP+ 3, PD+ 4, PD- 5 and PP- 14 are only compatible to drive with 5V differential input voltage!
Best regards
Franky

Hi Franky - I have verified that PN096 = 0,
so you are probably right about the 5V limit. I have now studied the Chinese labels on the connection drawing and found something that indicates 5V on the pin 4.
I will have to see if I can repair the opto coupler in the drive...

It is also possible, that only the 330Ohm resistor in front of the opto coupler is destroyed. You have to check to complete input circuit.

I will check both components and get back to you with the result.