PARAMETER REFERENCE TABLES
Parameter Descriptions > PROTECTION Menu
130
Parameter Descriptions > PROTECTION Menu
AR = Adjustable while running.
CODE
Mod
Bus AR Display Name
Range
Description
PROT-00 1024 N Decel Method
0_Normal
1_Over Fluxing
2_Traction Energy
0_VFD follows SET-12 Deceleration time
1_VFD prevents DC bus Over voltage by over-fluxing the motor at PROT-
14 voltage. The Decel time can be longer than SET-12 value.
2_VFD prevents DC Bus Over voltage by changing output frequency and
voltage. The Decel time can be longer than SET-12 value.
PROT-01 1025 Y Preheat Level
0 to 100%
Percentage of nominal current applied to the motor as DC voltage to heat
the VFD and motor. Slowly increase the percentage to reach the sufficient
preheating temperature.
PROT-02 1026 Y Preheat Duty
0 to 100%
Sets output current cycle of preheating, which corresponds to 0-10 sec
-
onds.
0% - no output current
50% - 5 seconds OFF and 5 seconds ON
100% - continuous output current
PROT-03 1027 Y LV Level
(Varies with VFD rating)
Sets the Low Voltage (Lv) level. Recommended setting is motor voltage
minus 10%. If incoming power varies too much, the setting may need to be
15% less than motor voltage.
If DC bus voltage drops to Lv level, the VFD stops output to the motor with
motor free run to stop. If fault occurs during acceleration, deceleration,
constant speed, or stop, then fault indication is LvA, Lvd, Lvn, and LvS,
respectively. Manual reset is required.
To enable auto restart after a momentary power loss, consult PROT-37
and PROT-38 for VFD handling of fault. The hysteresis recovery level is
based on VFD frame size and VFD voltage rating.
PROT-04 1028 Y OV Stall level
(Varies with VFD rating)
Set Over-Voltage Stall Level. If braking unit or braking resistor is con
-
nected, set level to 0 to disable.
PROT-05 1029 Y OV Stall Prevent 0_Standard
1_Advanced
Set Over-Voltage Stall Prevention operation.
0:Standard - Frequency maintains during deceleration.
1:Advanced - Frequency increases during acceleration, deceleration, or
constant speed.
PROT-06 1030 Y SW Brake V Lvl
(Variable)
Sets the DC-bus voltage at which the DC Brake is activated. Defaults are
based on VFD Rating.
PROT-07 1031 Y OCA Level
0 to 130%
Set Over-Current during Acceleration level. Value is based on VFD's rated
current and selection of VFD-35 for Light Duty or Normal Duty.
PROT-08 1032 Y OCN Level
0 to 130%
Set Over-Current during Operation level. Value is based on VFD's rated
current and selection of VFD-35 for Light Duty or Normal Duty.
PROT-12 1036 Y OL-2 Type
0_Disable
1_Alarm at Speed
2_Trip at Speed
3_Alarm at Run
4_Trip at Run
Select Overload Detection operation. Setting 1 and 2 protects from Over
-
load once VFD reaches constant speed. Setting 3 and 4 protects from
Overload throughout run of the motor.
PROT-13 1037 Y OL-2 Level
10 to 200%
Set Overload Detection level with respect to the rated current of the VFD.
PROT-14 1038 Y OL-2 Delay
0.0 to 60 Sec
Duration output current exceeds the overload detection level causing an
Overload condition. The hysteresis for the Overload condition is 5% of
detection level.
PROT-16 1040 Y ETH Type
0_Disable
1_Self Cooled
2_Force Cooled
Set type of motor for Electronic Thermal Relay protection. For 1:Self-
Cooled, the motor rated current percentage level is 40% at 0Hz and linear
increases to 100% at motor rated frequency.
PROT-17 1041 Y ETH Delay
30 to 600 Sec
Sets time the output current is higher than 150% before tripping on elec
-
tronic thermal overload. The overload level with respect to time is based
on I
2
t curve.
PROT-18 1042 Y OH Warning
0.0 to 110 °C
Set Heat Sink Over-heat warning level. When temperature exceds 110C,
the drive stops with an IGBT over-heat fault. Cooling fan is activated when
temperature reaches 15C less than value. The cooling fan deactivates for
35C less than value.
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