creativepaper
Lifetime Supporting Member
I have a Point IO safety chasis with some safety IO (1734-OBV2S cards in it). This is controlled by a GuardLogix PLC.
I have two robots that I want to add their safety interlock into. Their diagrams show a standards dual channel safety relay in the schematics.
To me, I cannot use the outputs from 1734-OBV2S cards since they don't use the same 24V as the robot is from a different electrical panel.
Can I have the output from the OBV2S go to a 440R-EM4R2 terminal L12 and wire the robots into this?
I have two robots (both separate breakers), so need a total of four 'dry contacts'
Other alternatives are:
- use a 1734-FPD and another 1734-OBV2S card so the OBV2S sources the robot 24V. Would need 2x 1734-FPD and 2x 1734-OBV2S.
- Use a 440R-D22R2 relay and a 440R-EM4R2 and have the existing OBV2S trigger the DI safety relay. This is the same as what I would like, just an additional relay in the way.
I have two robots that I want to add their safety interlock into. Their diagrams show a standards dual channel safety relay in the schematics.
To me, I cannot use the outputs from 1734-OBV2S cards since they don't use the same 24V as the robot is from a different electrical panel.
Can I have the output from the OBV2S go to a 440R-EM4R2 terminal L12 and wire the robots into this?
I have two robots (both separate breakers), so need a total of four 'dry contacts'
Other alternatives are:
- use a 1734-FPD and another 1734-OBV2S card so the OBV2S sources the robot 24V. Would need 2x 1734-FPD and 2x 1734-OBV2S.
- Use a 440R-D22R2 relay and a 440R-EM4R2 and have the existing OBV2S trigger the DI safety relay. This is the same as what I would like, just an additional relay in the way.