56 • Control Keypad
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MAIN & PROTECT.
- **** -
Displays in MINIMIZED MODE and MAXIMIZED MODE
Display and Default
Values
Range Description
OVERLOAD CLASS
IEC CLASS 10
IEC CLASS 5/
IEC CLASS 10/
IEC CLASS 15/
IEC CLASS 20/
IEC CLASS 25/
IEC CLASS 30/
NEMA CLASS 5/
NEMA CLASS 10/
NEMA CLASS 15/
NEMA CLASS 20/
NEMA CLASS 25/
NEMA CLASS 30/
Sets OVERLOAD CLASS characteristics
Sets OVERLOAD PROTECT functionality.
The HRVS-DN allows motor protection according to IEC class
5, 10, 15, 20, 25 or 30
or according to NEMA class 5, 10, 15, 20, 25 or 30.
Tripping curves are shown on section
7.8.2.1 page 58.
The OVERLOAD protection incorporates a THERMAL
CAPACITY register that calculates heating minus dissipation of
the motor.
The HRVS-DN trips when the register fills up. (THERMAL
CAPACITY=100%)
The time constant, in seconds, for cool down after overload trip
is:
Class 5 10 15 20 25 30
IEC
160 320 480 640 510 960
NEMA
140 280 420 560 700 840
The overload protection can be set to protect the motor as set
in the OVERLOAD PROTECT parameter:
ENABLE – motor is protected at all time.
ENABLE WHILE RUN – motor is protected only when in Run.
DISABLE – motor is not overload protected by the soft starter.
Note:
In order to restart after OVERLOAD trip, the thermal register
should be 50% or less.
OVERLOAD PROTECT
ENABLE WHILE RUN
DISABLE/
ENABLE
WHILE RUN/
ENABLE
UNBALANCE TRIP
20% OF FLA
10-100%/ OFF
Sets UNBALANCE TRIP level.
Sets UNBALANCE TRIP DELAY.
Trips the HRVS-DN when current unbalance increases above
level that was set for a time longer than UNBALANCE DELAY.
Notes
:
Becomes operational after the start signal.
UNBALANCE DELAY
5 SEC.
1 –60sec.
GND FAULT TRIP
20% OF FLA
10-100%/OFF
Sets GND FAULT TRIP level.
Sets GND FAULT TRIP DELAY.
Trips the HRVS-DN when ground current increases above level
that was set for a time longer than GND FAULT DLY.
Note
:
Becomes operational after the start signal.
GND FAULT DELAY
5 SEC.
1 –60sec.
UNDERVOLT. TRIP
70% OF Vn
50-90% Sets UNDER VOLTAGE TRIP level.
Sets UNDERVOLT TRIP DELAY.
Trips the HRVS-DN when mains voltage drops below the level
that was set for a time longer than UNDERVOLT DELAY.
Notes
:
Becomes operational only after the start signal.
When voltage drops to zero (voltage outage) the HRVS-DN
will trip immediately, thus overriding the delay.
Can be set to AUTO RESET. Refer to section
7.8.6 page
71.
UNDERVOLT. DELAY
5 SEC.
1 –10sec.
OVERVOLT. TRIP
120% OF Vn
110-125% Sets OVER VOLTAGE TRIP.
Sets OVERVOLT TRIP DELAY.
Trips the HRVS-DN when mains voltage increases above the
level that was set for a time longer than OVERVOLT DELAY.
Can not be set lower than the UNDER VOLTAGE setting.
Note
:
Becomes operational only after the start signal.
OVERVOLT. DELAY
2 SEC.
1 –10sec.
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