jrbe (Customer) asked a question.
I have a controller driving 2 1hp GS2 drives through the digital inputs. The fault contacts on the GS2's (series loop) interrupts if there is an event. The controller they're plugged into (Odroid XU4) watches for a fault in that loop then reverses the motors. These are moving around food waste.
I enabled the fault detection and have it set to 70% currently both in acceleration and steady state running.
oL1 triggers and the drive stops. I haven't quite worked out how to clear the fault manually. IIRC 6.31 ..32 would show 5 as an overcurrent event.
oL2 shows up occasionally.
I set the number of faults to 10. This seems to just be a buffer to not toggle the fault contact.
What I'm trying to do is to set the GS2 drives to stop if they have an overcurrent event, open the fault contact, and dont move until the direction request changes. Once the direction request has changed it can clear the fault and move in the other direction.
I cant find:
- info on which fault is oL1 and oL2.
- how to have the drive see an overcurrent event, stop driving, automatically clear the overcurrent fault when the direction request changes, then drive in the other direction.
I'm not seeing logic options to do this. Am i missing them?
page 4-7 in manual says ol1=5, ol2=6. External fault reset is DI4, page 2-11 in manual, also this page shows fault relay as R2. both DI4 and R2 would be like that with default programming. I don't know what you have set at 70%, would that be over torque detection? And you have it enabled for which?you said both accel and steady state, but parameter P6.07 page 4-6 says 3 choices disabled, during constant speed running or durning acceleration, does not say both like you mentioned?? You will have to setup logic externally looking at R2 for fault, DI4 to reset and DI2 to reverse, again wiring page 2-11. I don't know for sure if your over torque detection triggers fault relay R2??? Default or normally fault detection is enabled. You said you enabled fault detection enabled and have it set at 70%? So again what is it you have enabled to 70%??
I prefer Yaskawa drives love them. Very new to GS2 but it seems like most drives today all have these same settings and or behavior. Waiting for your answer, Hope this helps.
I am still stuck with this. VFD's Stop when an overcurrent happens. Any way to have them auto reset if the direction is changed?
The overcurrent fault does trigger the relay contact. Problem is that the VFD shuts down after the # of allowable fault events. I havent found a good way to clear the faults. Powering it down works but i wouldn't consider that to be a good way of clearing the faults.
I found the oL1 and oL2.
I adjusted the voltage from 208 up to 240 listed on the motor plate (208-240v.) That seems to have helped with one. The other is overcurrent events.
Any ideas leads on how to auto reset overcurrent faults if the direction is changed?
what about external fault reset DI4-Digital Input 4 is default as fault reset? What do you have set at 70% torque control?
How often does this happen?
Use another DO from your controller to energize the DI4 of the drive to external fault reset. I can't remember, but you may have to reset, then turn on run request. The drive probably needs to see a rising edge on the run after the fault is reset. AFAIK, there is not a way for teh drive to reset itself.
Another thought, if (big if) the drive does not need to see a rising edge on the run after the fault is reset, you could jumper rev direction and fault reset DI together...