ABB IRC5P, Product Manual, Page: 59 / 220

5 Installation and Commissioning
Product Manual, Control Cabinet IRC5P 3HNA009834-001 en Rev.06 59
5.3 System Interconnections
5.3.3 IS-Ground Connection
Description
In an ex-installation using paint equipment, it is important that IS-ground
connections (Intrinsically Safe Ground) are installed. The connections must be
performed according to local standards, and following two examples must be
regarded as guidelines only.
Figure 27 Ground connections, factory PE-ground
For location of rails, see ’Controller Connections Overview’ on page 42.
Alternative A
If a separate IS ground rail, connected to the factory IS-ground is available. Connect
an IS-ground wire of minimum 10 mm² (AWG 6) between:
– Control cabinet IS-ground rail - factory IS-ground rail.
– Purge unit IS-ground screw - factory IS-ground rail
– Manipulator IS-ground screw - factory IS-ground rail.
– Remove connection in control cabinet between PE-ground rail and IS-ground
rail (Yellow/green wire marked blue).
Alternative B
If a separate IS ground rail, connected to the factory IS-ground is not available.
Connect an IS-ground wire of minimum 10 mm² (AWG 6) between IS-ground
screws as follows:
– Manipulator - purge unit - controller.
– Or alternatively, manipulator - controller and purge unit - controller.
Purge unit
Factory IS
ground rail
Hazardous area
Manipulator
Purge unit
Factory IS ground conn.
ALTERNATIVE B
PE-Ground rail
Control cabinet
Hazardous area
Manipulator
Factory mains
ALTERNATIVE A
PE-Ground rail
Control cabinet
IS-Ground rail
Factory
PE ground
Factory
PE ground
Factory mains
IS-Ground rail
External pendant
connection
Alternative
connection
Optional connection
External pendant
connection