ABB IRC5P, Product Manual, Page: 83 / 220

5 Installation and Commissioning
Product Manual, Control Cabinet IRC5P 3HNA009834-001 en Rev.06 83
5.5 Cabin Safety System Connections
5.5.6 Process Interlock
General
The process interlock chain is used to disable all paint related functions when the
process interlock switch is activated.
The function may be used in situations where it is required to shut down all
hazardous paint functions such as the valves controlling paint and solvent etc. (same
valves as are closed by the cabin interlock chain), the high voltage supply to the
paint applicator (same function as the high voltage interlock) and functions
controlled by the Safety 2 System Interlock.
The process interlock may be used by the plant’s control system for the cabin e.g. to
close all hazardous functions of the paint system in case of a fire etc.
Connections
To install the Process Interlock switch, install a switch at terminals marked ‘Process
Interlock’ in connector SCB-X3 pin 7-8 as shown in Figure 34 and in principle
diagram in Figure 35 . The switch must be of a Normal Open fail safe type which
will be opened to disable process functions.
The switch must comply with ’Safety System Standards’ on page 65.