R-30iB Plus Controller, DSC and external Dead Man Switch

    Hello All,

    We would like to connect an external "Dead Man's Switch" to a Fanuc robot controller (R-30iB Plus) to enable two modes of operation in Automatic mode:

    1. Operation without an operator in the robot’s area, at full speed.
    2. Operation with an operator in the robot’s area, where the operator holds down the external "Dead Man's Switch." In this case, the robot's speed should be limited to 250 mm/sec.

    Could you please inform us which DCS option is necessary for this configuration? Is this option equally applicable to the R-30iB, R-30iB Mate, R-30iB Plus, and R-30iB Mate Plus controllers?

    The DCS Option do the job.

    You have to wire the DeadMan to the DCS Input in DUAL Mode and To make the equation to authorise or not the motion.

    Since you can have Cartersian position check in DCS It's easy for the DCS to know if at this moment you need the deadman input or not.

    I only work with R-30iB Plus but i don't see any problem working with these other cabinet.

    Please don't let me google it for you :winking_face:

    May be DCS will do the job. But it's not that easy as DylanNoel described.

    DCS must check that a safety door is open.

    The signal for safe speed must be used to check low speed.

    The dead man switch has to be pressed (this has to set the low speed input and safety gate input).

    You have to create logic for this. But now you have the task to start process after pressing deadman switch. And how do you think this can be done? I only know of using a mobile panel with deadman switch and hmi to select and start processes.

    One more remark: I personally wouldn't do it, and if someone insist on operation mode like this I wouldn't ever use it while staying in the cell.:away:

    What is going to happened if operator is present in the cell and let off the button? Robot start flying at full speed? Better off use area sensor with two range limit set, first limit (non safety output) will change the speed with dual DCS and second limit (safety output) will get the robot to complete stop.

    Speed limiting is not a safety measure, TP and speed limits could be changed intentionally or on accident, and operator can be hurt badly if expecting slow motion, but in fact faced 100% of the speed.

    Also it is impossible to give a safe advice without knowing the cell details and risk assessment.

    Quote from sborchshev

    Also it is impossible to give a safe advice without knowing the cell details and risk assessment.

    That's correct, but he was just asking for a possibility, not for a risk assessment.

    Haven't reminded correct. So forgot one step. Fanuc hasn't a dedicated input for safe speed control, so one must declare a speed check area for the whole cell. This must be enabed by deadman switch beside the thing with safety door. Other robots have a dedicated signal for checking safe speed overall, Fanuc doesn't.

    Quote from sborchshev

    Speed limiting is not a safety measure,

    You can define a speed check zone in DCS, this is safety rated.

    Quote from sborchshev

    ... With open safety door, you should not have Master Control power...

    This is your opinion (and for sure also mine), but there are other people with other opinions. And even according to EU machinery directive there exist this possibility. We have to realize it in many cells we setup. There we always have a safety rated PLC, where that logic is implemented.

    So I don't know if the logic for bridging safety door, setting signal for activating safe speed zone and make sure that this will not be able when safety door isn't opened even is possible on fanuc robot without safety PMC. But it's worth a try, if someone insists on that silly feature.

Advertising from our partners