8
For redundant 3132 cards that utilize the 3099/18 module, the user application logic shall de-
energize the output when a readback / loopback error on one card is detected. The second
redundant card provides and independent secondary means to de-energize the channel.
Cabling
Adhere to the specified insulation strip length of 0.26 inches (6.5 mm) when you connect field
wiring to the terminal modules; excessive insulation strip lengths causes an electrical hazard. Do
not exceed the specified torque when you secure the wires into the terminal module; maximum
torque is 2.2 inch-pounds (0.25 N-m).
Standard cables to termination modules are minimum 5 feet in length.
You
must
disable (offline) an I/O card before you can hot-swap it. After you replace an I/O card,
you must enable it to return it to operation. It must be also disabled (offline), if making online
changes and removing it from a redundant configuration. While NetArrays is operating in Debug
mode, use the I/O Configuration Form to disable or enable I/O cards. To hot swap an I/O card,
first display the card’s icon in the I/O Configuration Form. If the I/O card’s icon is red, you can
remove it. If the I/O ca
rd’s icon is yellow or green, select the icon and disable it before you
remove the card. After you replace the I/O card, select the card’s icon and re-enable it. The
color of the icon changes to green to indicate the card is online.
Warning!
Dangerous
high voltages may be present at the cards’ terminal blocks during
normal operation. When you service these cards, avoid contact with exposed voltages
on the card while you connect the field cabling. The field cabling terminal block
connectors also may have high voltages when disconnected from the card.
Warning!
Never remove the card from the chassis with the termination cables
connected and the field power applied. Always disconnect the field power and cables
before removing the card from the chassis. Always insert the card into the chassis with
the cables and field power disconnected.
