Hello
Trying to check a door limit switch, plugged it into X-11 7-8 (control Krc 2) after the entry pops operator safety / gate open after closing operator safety door / gate open disappears.
X11
-
widelec -
November 27, 2015 at 10:34 AM -
Thread is marked as Resolved.
-
-
what is that you ask help for?
-
Hi.
I'm don't get it too. Explain are You talking about problems with acknowleadge of fence door ?Marek
-
Hello
It otherwise I start to panic mode write what he wants to do, in the beginning I must say that I am green on elekryki I have to only buy things that will be needed and what we print have a connection of all this will take care of someone else. Well, yes there is a fence for fence two robots (control KRC 2) are 3 goals one double at the gate wants to set a limit switches on the corners with individual entrances wants information such tubes screwed at every entrance Off switch awaryny such .I would like to find out what else needs some extra switches relays what would you have offered to buy (I note with ever such installation is not seen) asked me the exact description of these protections, whether you open the door you need to confirm a switch closures door.
-
i still have hard time decoding what you are trying to say but i can tell you this much - stay out of it!, let someone else deal with it. you have no idea what you are getting into, legal implications etc. this is not just 'circuit' it is a 'safety circuit'. there are many things to be considered and correct application is essential.
example (as seen from Canadian perspective, Z-434 standard):
1. why did you place controllers inside the cell? how do you plan on meeting requirements to safely lock controller out, before entering cell and doing any work that requires lockout? have you ever taken close look at Kuka training cells for example?
2. you have more than one robot inside cell, this requires interlocks so that during teaching only one robot can be enabled at a time.
3. i see three entrance gates, each will require E-Stop, door switch etc.
4. all guarding (including door switches) must be 'control reliable' (redundant). switch you posted picture of - is not that. it may have two set of contacts but actuator does not have any mechanical redundancy (single roller/plunger/cam). this means if you are using electromechanical switches you need to double them up. it is much nicer to use sensors that are already redundant (for example PILZ PSen series). also your switch is not even a safety switch. safety switches are built to make defeating challenging if not impossible and - such products are marked accordingly.
5. all safety devices must be monitored by safety controller. not just inputs (buttons, switches) but also outputs (relays). this again means that those relays must be safety relays (special construction and marking) and used correctly (force guided contacts, each safety relay must have NC contact monitored).
6. space around robots needs evaluation, robot travel must be restricted etc,. read safety standard applicable to your country and make sure you understand correct interpretation. standard defines terms/definitions used in standard, if T2 mode is permitted and when, what are minimum clearances in reduced and not reduced velocity, permissible reach, type of guarding (size of opening) etc.just my $0.05
-
Thank you for helping panic mode and helped me a lot for your understanding with my broken English