Hi all,
I've got an application coming up with a Compact GuardLogix and safety I/O. Seeing as my only option for safety I/O is 1734 point I/O, I'm going to have to have two racks in the MCC - the local 1768/1769 rack, and the 1734 rack. The safety I/O will have to be on the 1734 rack, and the standard I/O could be on either. Just due to my typical drawing and numbering style, having two I/O racks in the same cabinet is a bit of a pain - I mean, it's a real First World Problem, but it got me wondering, is there any reason I shouldn't have ALL my I/O on the 1734 rack? Just have the power supply, ethernet and CPU on the 1768 chassis, and then do both safety and non-safety I/O on the 1734 chassis?
Costwise, it's much the same whether I buy four 1734 8 channel cards or one 1769 32 channel card.
I don't have a massive amount of standard I/O; probably in the ballpark of 50 in and 30 out. Maybe a couple of analog inputs.
There's nothing that's speed critical (well, there is one thing, but its on ethernet anyway).
Safety I/O will have to be on the 1734 chassis anyway, so the concern of "what happens if you lose the link" is moot. Sure, we can't set off a siren or a flashing light, but everything's going to have come to a grinding halt, and there's a HMI to explain the problem.
So I guess, are there any other quirks, differences, or considerations when choosing between 1734 and 1769 I/O that I should think about before making this decision? Will I need any extra power distribution modules etc to power that many 1734 cards?
Appreciate any insight or thoughts
I've got an application coming up with a Compact GuardLogix and safety I/O. Seeing as my only option for safety I/O is 1734 point I/O, I'm going to have to have two racks in the MCC - the local 1768/1769 rack, and the 1734 rack. The safety I/O will have to be on the 1734 rack, and the standard I/O could be on either. Just due to my typical drawing and numbering style, having two I/O racks in the same cabinet is a bit of a pain - I mean, it's a real First World Problem, but it got me wondering, is there any reason I shouldn't have ALL my I/O on the 1734 rack? Just have the power supply, ethernet and CPU on the 1768 chassis, and then do both safety and non-safety I/O on the 1734 chassis?
Costwise, it's much the same whether I buy four 1734 8 channel cards or one 1769 32 channel card.
I don't have a massive amount of standard I/O; probably in the ballpark of 50 in and 30 out. Maybe a couple of analog inputs.
There's nothing that's speed critical (well, there is one thing, but its on ethernet anyway).
Safety I/O will have to be on the 1734 chassis anyway, so the concern of "what happens if you lose the link" is moot. Sure, we can't set off a siren or a flashing light, but everything's going to have come to a grinding halt, and there's a HMI to explain the problem.
So I guess, are there any other quirks, differences, or considerations when choosing between 1734 and 1769 I/O that I should think about before making this decision? Will I need any extra power distribution modules etc to power that many 1734 cards?
Appreciate any insight or thoughts