88 • Control Keypad
_____________________________________________________________________________________________
Resetting of all faults, except for UNDER CURRENT protection, (Local, Remote, Serial Link or Auto Reset) is
not possible as long as the START signal exists.
7.8.9 Auto Reset
UNDER VOLTAGE and
PHASE LOSS faults can auto-reset (refer to section
7.7.7 on page 81). The RVS-DN
will reset itself 60 seconds after voltage was fully restored, provided that the START signal is removed.
UNDER CURRENT fault can be set to auto-reset (refer to section
7.7.7 on page 81).
The RVS-DN will reset itself when a programmed time delay has elapsed, even if the START signal is not
removed!
MOTOR INSULATION ALARM auto-resets if the resistance exceeds the INSULATION ALARM level (refer to
section
7.7.7 on page 81).
7.9 Timing Occurrence Table
Active During
Timing And Occurrence
Start Run Stop
Soft
Stop
Too many starts with START INHIBIT period
√
Electronic overload with curve selection
√
O/C shear pin (jam)
RVS-DN protection – trip immediately at I≥850% FLC
√ √
√
Motor protection – trip function
During start – factory set at 850% FLA after O/C DELAY.
√
√
During run – adjustable 200 – 850% FLA after O/C DELAY.
√
Under current adjustable time delay
√
Phase loss √ √
√
Phase sequence √
Under voltage with adjustable time delay. Time delay is
override in case of PHASE LOSS.
√ √
√
Over voltage with adjustable time delay
√ √
√
Long start time (stall protection)
√
Shorted SCR √
√
Wrong connection (load loss)
√
External fault – input from a N.O. contact
√ √ √ √
SCR protection by Metal Oxide Varistors (MOV)
√ √ √ √
RVS-DN over-temperature √ √ √ √
RVS-DN internal test, when the On LED is lit.
√ √ √ √
Motor insulation test (optional) – Two levels for alarm &
trip. When installed, operates when mains voltage is
removed.
√
Motor thermistor (optional) – programmable PTC/NTC,
with adjustable trip level.
√ √ √ √
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