ABB MagMaster Instruction Manual page 16

...3 ELECTRICAL INSTALLATION
3.4.5 Current Output – Fig. 3.20 and 3.21
Information.
• Output is fully programmable – see Programming Guide.
• Output is electrically separated from all other MagMaster connections.
• External isolators are not normally required and may significantly limit accuracy if used.
Information. For Multidrop HART installations, remove 'HART Link' and connect HART systems
directly to IC2: this allows the analog output function to be retained.
Receiver No. 2 – Reverse
Receiver No. 1 – Forward
Information. Multidrop HART mode cannot be used with this configuration.
Fig. 3.21 Current Output Connections: Dual Current Option
14
Fig. 3.20 Current Output Connections: Standard
Reverse +ve
HART connections
(where applicable)
MagMaster Transmitter
HART link
IC2
+ve
Common
IC+ IC– IC2 IC–
Alternative
Normal
HART connections
where applicable
+ HART
MagMaster Transmitter
IC2
Forward +ve
Common
IC– IC2
IC+
IC –
IC+
IC –