Control Network Specifications > DeltaV Controller Firewall > DeltaV Firewall IPD Network Examples

DeltaV Controller Firewall with Single Controllers and the Single Port Fiber Switch

Figure: DeltaV Controller Firewall with Single Controllers and the Single Port Fiber Switch


The information in the following table applies to both the primary and secondary connections between all components.

100 m (max) straight-through Category 5e Screened Twisted Pair (ScTP) cable. The shield on the controller's RJ45 connector connects only to a Faraday cage in the controller; not to the controller's DC ground. Therefore, the RJ45 connectors are floating and the single point of ground is made at the switch to which the controller is connected. Build this cable assembly with a shielded, metal-enclosed RJ45 connector on both ends.
100 m (max) straight-through ScTP cable. To prevent ground loops, build this cable assembly with a shielded, metal-enclosed RJ45 connector on one end and an isolated, plastic-enclosed RJ45 connector on the other end. The metal connector end of this cable assembly/link must be placed on the mini-switch and not on the firewall port.
100 m (max) straight-through ScTP cable. To prevent ground loops, build this cable assembly with a shielded, metal-enclosed RJ45 connector on one end and an isolated, plastic-enclosed RJ45 connector on the other end. The metal connector end of this cable assembly/link must be placed on the rack room switch and not on the firewall port.
100 m (max) straight-through ScTP cable. To prevent ground loops, build this cable assembly with a shielded, metal-enclosed RJ45 connector on one end and an isolated, plastic-enclosed RJ45 connector on the other end. The metal connector end of this cable assembly/link must be placed on the rack room switch and not on the workstation.
On the mini-switch, attach a separate ground wire to the terminal block screw that is labeled with the ground symbol and connect this wire to a suitable instrumentation ground.
On the firewall, attach a separate ground wire to the front panel screw that is labeled with the ground symbol and connect this wire to a suitable instrumentation ground.