Hi,
I don't have hands on experience on PLC hence i would like to have few clarifications on PLC specifications as indicated below.
One of the client PLC specification indicates the following under Input and Output modules description:
a) All input output modules shall have optioncal isolation from logic system(1500 VDC)
b) The I/O field channels shall be elctrically isolated from the I/O module electronics.
I would like to know what is the difference between these point a & b. Also, why it's required.Please clarify.
c) Also i would like to know whether if a PLC specification says relay output then the relay is in-built in the Output card itself or it's external relay.
d) In-built relays are of always Solid-State type?
Thanks in advance for valuable reply.
By
GB
I don't have hands on experience on PLC hence i would like to have few clarifications on PLC specifications as indicated below.
One of the client PLC specification indicates the following under Input and Output modules description:
a) All input output modules shall have optioncal isolation from logic system(1500 VDC)
b) The I/O field channels shall be elctrically isolated from the I/O module electronics.
I would like to know what is the difference between these point a & b. Also, why it's required.Please clarify.
c) Also i would like to know whether if a PLC specification says relay output then the relay is in-built in the Output card itself or it's external relay.
d) In-built relays are of always Solid-State type?
Thanks in advance for valuable reply.
By
GB