Instruction Manual
D104239X012
Multiport Flow Selector
January 2019
27
Wiring
All user wiring terminations are made inside the Electrical Enclosure shown in figure 3. Refer to wiring diagram located
at the back of this manual for wiring connections. High voltage power connections are made to the disconnect/circuit
breaker located inside the electrical enclosure. All low voltage connections, including network wiring, are made to the
Termination Board Module (TBM) located inside the electrical enclosure. Use conduit and seals in accordance with
National Electric Code (NEC) and local codes for all wiring entering the electrical enclosure.
Power Wiring
Connect power voltage leads to the circuit breaker located in the main electrical enclosure. Power wires must enter
the electrical enclosure at the conduit entry on the lower right side of the enclosure to prevent water from entering.
The controller provides automatic phase correction in case three-phase power is connected in the wrong phase
rotation.
Network Wiring
If a single bus network connection, such as Foundation Fieldbus, is being made, connect to Network Port A at TBM
terminals 24 (-) and 25 (+). If the cable is shielded, connect shield to TBM terminal 23. If redundant or repeater
network connections such as Bettis E>Net are being made, connect the second network to Network Port B at TBM
terminals 23 (+) and 24 (-). Connect cable shield of Port B to TBM terminal 25. Cable shields are isolated from earth in
the actuator. Connect shields to only one earth ground point in the network, normally the host location.
Monitor Relay Wiring
The Monitor Relay is used for hardwiring an indication of availability of the actuator for remote control. When the
selector switch is placed in the Remote mode and if there are no alarms present that prevent operation, the Monitor
Relay is energized. If an alarm occurs or the selector switch is moved from the Remote position, the relay is
deenergized. The Monitor Relay is a Form C relay with both normally open (N.O.) and normally closed (N.C.) contacts.
Wire to either TBM terminals 31 and 32 if N.O. contacts are desired. Wire to TBM terminals 32 and 33 if N.C. contacts
are desired. The relay is shown on the wiring diagram in the deenergized state, meaning that the actuator is not
available for remote control.
Local ESD Wiring (Emergency Shutdown)
Remove jumper between TBM terminals 27 and 28. Connect Normally Closed (N.C.) dry contacts to terminals 27 and
28. When the contacts open, ESD is activated, causing the actuator to go to Home Port. The actuator will remain at the
Home Port until the ESD contacts are closed and a new command is received from either Local or Remote control. The
ESD circuit is a closed loop failsafe circuit. It the circuit is opened for any reason, broken wire, bad contact, 24VDC
power supply failure, etc., the ESD function is activated. The closed loop circuit is powered by 24VDC from the
actuator.
Optional Remote Display Module (RDM) Wiring
Connect twisted pair RS485 cable from the RDM to TBM terminals 18 (-) and 19 (+). If the RDM is being powered from
the actuator 12VDC supply, wire the power wires from the RDM to TBM terminals 16 (-) and 17 (+). The RDM is polarity
protected, preventing damage, but will not operate if polarity is reversed.
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