Hi I am trying to program a Nidec id300 motor mounted drive so that the Analogue input it uses as reference can be selected as wither 4-20ma or 0-10v via a digital input can anyone give me any pointers with this i can see that the Input type is controlled by setting a number in to a parameter...
so i have a pc which ive been told mutiplexes its i/o i can see that the leds flash in seuence as it scans from card to card but what does this actually mean?
Might be a bit of a general question but can anyone suggest a god general approach to faultfinding with estop/safety relays, reset circuits and double stop loops etc
respectfuly; i am stuch within the system i have got i agree the drives should power down ok, the fact is they dont and despite sending the cards back to manufacturers for repair they tend to do the same again at some later date?
How can these modifications fail. maybe i should have mentioned...
i will simplify my explination:
i intend to interupt the output of the drive before it gets to the motor therefore isolating the motor.lockable. i intend to provide electrical interlocks to prevent the drive being isolated at his point whilst power can be supplied to the motor ie to stop some...
I am working at a plant that after many years of denial is being dragged kicking and screaming into our current heath and safety regime
my problem is that the health and safety department are insisting that full isolations be carried out on our machines before the cleaners, who uptill now have...
good idea, although im not sure the company will meet the expense as it would mean either a plc change or some sort of converter device and there are 48 of these drives around the plant. i really have two options, attempting to offset the reference in th plc to account for the volt drop...
the reference to an inveter drive at work is 0-10v, the reference under general opperating conditions doesnot exceed 2.5v to achive the required speed. The reference comes from a PLC analogue output. before my time there was an issue that when the plc was first switched on it set its output to...
skogsgurra
thanks for your reply. the input was 24vdc i actually disconnected the wire to it. could you explain the cmos bit a little further for me
thanks
anyone have any experienced of inputs being latched on on plcs and suggestions to the possible causes. I have heard that poor neutral faults can cause this but cant really see how
I have noticed that our plant pfc cubiles sometimes show a leading powerfactor for 10min or so as the capacitor banks switch back out after a sudden drop in load, Is this likely to cause any extra charges greater than that if the powerfactor was lagging rather than leading. are there any other...
sorry to hasty again
24vdc supply to an estop loop consisting of both normal stop buttons and contacts from the stop relays of remote units that have their own 24v dc power supplies.
i wish to put indicators along the estop loop to show where the 24v is broken,(this is a hardware stop loop that...
assuming that all the 24v powersupplies in my system have neutrals tied to earth. what are the problems asssociated with using a neutral of one power supply with the live fom another. (the live is passed from one panel to the next in a loop of switches but the neutral is not) current rating of...
