Solcon RVS-DX Series - 4.2 Power wiring scheme for Inside-Delta Connection; 4.3 Wiring Notes

9 • Recommended Wiring Scheme
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4.2 Power wiring scheme for “Inside-Delta” Connection
(Refer to section
4.3.9 on page 12)
Connecting RVS-DX INSIDE DELTA
Reverse speed with RVS-DX connected INSIDE DELTA.
Notes:
When installing the RVS-DX INSIDE DELTA. it is highly recommended to
use a line contactor (C1) or INSIDE DELTA. contactor (C2) in order to avoid
a destruction of the motor in case of a shorted SCR in the RVS-DX.
If a contactor is connected Inside the Delta (C2) only, motor terminals are
“live” (full voltage) even when contactor is open.
4.3 88BWiring Notes
WARNINGS!
When mains voltage is connected to the RVS-DX, even if control voltage is
disconnected, full voltage may appear on the starter load terminals.
Therefore, for isolation purposes, it is necessary to connect an isolating device
before the starter.