Saab TankRadar
®
Pro
iv
Edition 3. Ref. No: 306010E
3 Electrical Installation ............................................ 3-1
Identication of Installed Options .....................................................................3-1
Junction Box .....................................................................................................3-2
External Connections.......................................................................................3-3
Non-Intrinsically Safe Junction Box -EEx e.....................................................3-3
Intrinsically Safe Junction Box - EEx i ............................................................3-4
Alternative Non-intrinsically Safe Junction Box...............................................3-5
Connecting to a TRL/2 Bus Interface..............................................................3-6
Connecting HART devices...............................................................................3-7
Active output (internal loop supply).................................................................3-7
Passive output (external loop supply).............................................................3-7
Intrinsically safe conditions.............................................................................3-8
Non-Intrinsically safe conditions .....................................................................3-8
Connecting the Remote Display Unit (RDU40)...............................................3-9
Temperature measurement ............................................................................ 3-11
Spot elements 3-wire independent ...............................................................3-12
Multiple spot elements 3-wire common return..............................................3-12
Cables ..............................................................................................................3-13
Safety ...............................................................................................................3-13
Power Supply ..................................................................................................3-13
Grounding .......................................................................................................3-13
CENELEC.....................................................................................................3-13
FM ................................................................................................................3-13
System Overview ............................................................................................3-14
Display Panel................................................................................................3-14
Analog Outputs.............................................................................................3-14
Digital Communication..................................................................................3-14
Power Supply................................................................................................3-14
Internal Connections ......................................................................................3-15
Power Supply................................................................................................3-15
Display Panel................................................................................................3-15
Primary Output .............................................................................................3-16
Secondary Output.........................................................................................3-17