24 • Recommended Wiring diagrams
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4.12 External Fault
Note:
Switch E can be used as an
EXTERNAL FAULT input only when
terminal 21 is connected to neutral or
ground and INSULATION TEST
option is not installed.
4.13 Line Contactor
Notes:
• Typical wiring when RVS-DN is retrofitted into an existing system to reduce modifications in
existing installations.
• Start signal is switched on upon closure of the line contactor. The RVS-DN will operate as long
as the line contactor is energized.
• Control Supply obtained from mains must match the RVS-DN Control Supply voltage.
• It is recommended that terminals 1-3 are always connected to Control Supply voltage.
• Soft stop can not be applied for this wiring diagram. If soft stop is required, the line contactor can
be held by the immediate relay contacts because the relay is de-energized only at the end of the
soft stop.
• Verify that N.O. contact C1 closes after the main contactor closes. RVS-DN requires 500 mSec.
delay for the start signal after the line contactor is closed. If it closes prior to that, UNDER
VOLTAGE fault will occur. It is recommended to use a time delay timer to prevent possible
faults.
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