36 • Recommended Wiring Diagrams
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5.11 Operating via Communication Links
Notes:
In order to operate via communication, either Modbus, Profibus or DeviceNet optional PCBs must be
installed and wired properly.
In addition, optional Relay PCB must be installed in the control nodule. The optional Relay PCB will
close a contact (terminals 31 & 32) when start signal is initiated via communication. This contact
typically controls the Line Contactor via RS relay. When Line Contactor is closed mains power I
connected to L1, L2 and L3.
Start command to the soft starter (terminal 6) is initiated by an auxiliary contact from the Line
Contactor in series to an auxiliary start relay (RS) thus ensuring that the Line Contactor is closed.
HRVS-DN must be programmed to enable control (not only monitoring). Refer to section
7.8.8 and
7.8.9 page 75 for programming.
Make sure that after programming, Control Supply voltage is disconnected and reconnected so that
the communication settings will take affect.
HRVS-DN will close the start/stop relay via communication commands UNLESS
switches A or B are
opened.
WARNING!
Beware!
HRVS-DN Control Module and Power Section must be grounded at all times.
When testing the HRVS-DN control/communication it is possible to use the
Control Module only without the Power Section.
The Control Module MUST be properly grounded to avoid danger of
electrical shock!!
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