BENSHAW Rsi S Series, Инструкция по эксплуатации

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216
Learning Protection Features
Coden Description
blocked and the motor will free-run due to inertia.
3 Dec If a fault occurs, the motor decelerates and stops.
Pr.21 OL Trip
Level,
Pr.22 OL Trip
Time When the current supplied to the motor is greater than the preset value at the overload
trip level (OL Trip Level) and continues to be supplied during the overload trip time (OL
Trip Time), the inverter output is either blocked or slows to a stop after deceleration
according to the preset mode from Pr. 20.
Note
Overload warnings warn of an overload before an overload fault occurs. The overload warning signal
may not work in an overload fault situation, if the overload warn level (OL Warn Level) and the
overload warn time (OL Warn Time) are set higher than the overload trip level (OL Trip Level) and
overload trip time (OL Trip Time).
Stall Prevention and Flux Braking
The stall prevention function is a protective function that prevents motor stall conditions caused by
overloads. During a stall condition, high currents may cause motor over heating or damage. These
high currents are sensed and the inverter operating frequency is adjusted automatically based on
the below parameter settings. Stall prevention can also be applied during deceleration. The inverter
senses the DC Link voltage to detect regenerative conditions and adjusts the deceleration time to
avoid over voltage trips. Flux braking can also be applied during deceleration to help dissipate the
regenerative energy.
Group Code Name LCD Display Parameter
Setting Setting range Unit
Pr 50 Stall
prevention
and flux
braking Stall Prevent 0000* - bit
51 Stall
frequency 1 Stall Freq 1 60.00 Start frequency–
Stall Freq 1 Hz
52 Stall level 1 Stall Level 1 180 30-250 %
53 Stall
frequency 2 Stall Freq 2 60.00 Stall Freq 1–Stall
Freq 3 Hz
54 Stall level 2 Stall Level 2 180 30-250 %
Pr.18
T : Pr.19
t t
Current
Multi-function output