Hi,
I'm trying to understand a couple of things with a feedback signals that are used in a SRP/CS that I'm working with. Quick disclaimer: I'm somewhat of a newbie in this area.
The use case I'm working on is a (servo) motor drive which is interfaced to a safety PLC. The motor drive has (2) STO inputs and (1) output which reports status of the STO function. The output is not a safety output from the servo drive.
My PLr is PLd and the servo drive's STO function can achieve this when the STO status output is connected to and used by the Safety PLC. I believe a CAT 3 architecture would be needed to achieve this
Does the STO status output from the servo drive need to be connected to a safe digital input on the safety PLC or can it be connected to a standard digital input?
I'm trying to understand a couple of things with a feedback signals that are used in a SRP/CS that I'm working with. Quick disclaimer: I'm somewhat of a newbie in this area.
The use case I'm working on is a (servo) motor drive which is interfaced to a safety PLC. The motor drive has (2) STO inputs and (1) output which reports status of the STO function. The output is not a safety output from the servo drive.
My PLr is PLd and the servo drive's STO function can achieve this when the STO status output is connected to and used by the Safety PLC. I believe a CAT 3 architecture would be needed to achieve this
Does the STO status output from the servo drive need to be connected to a safe digital input on the safety PLC or can it be connected to a standard digital input?