Allen-Bradley ArmorStart 290E User Manual page 151

ATTENTION: The bus regulator mode function is extremely useful for
preventing nuisance overvoltage faults resulting from aggressive decelerations,
overhauling loads, and eccentric loads. However, it can also cause either of the
following two conditions to occur.
1. Fast positive changes in input voltage or imbalanced input voltages can cause
uncommanded positive speed changes;
2. Actual deceleration times can be longer than commanded deceleration times.
However, a "Stall Fault" is generated if the drive remains in this state for 1 minute.
If this condition is unacceptable, the bus regulator must be disabled.
MotorOLSelect
Drive provides Class 10 motor overload
protection. Sets the derating factor for I
motor overload function.
0 = NoDerating
1 = MinDerating
2 = MaxDerating
Figure 55 - Overload Trip Curves
No Derate
100
80
60
40
20
0
150 175 200
0 25 50 75 100 125
% of Motor Nameplate Hertz (P29)
SWCurrentTrip
Enables/disables a software instantaneous
(within 100 ms) current trip.
For 0.5 Hp units – Min = 0; Max = 3.0; Default = 0
For 1.0 Hp units – Min = 0; Max = 5.0; Default = 0
For 2.0Hp units – Min = 0; Max = 8.4; Default = 0
Rockwell Automation Publication 290E-UM001B-EN-P - June 2012
Bulletin 290E/291E/294E Programmable Parameters
Parameter Number
Related Parameters
2
T
Access Rule
Data Type
Group
Units
Minimum Value
Maximum Value
Default Value
Min. Derate
100
80
60
40
20
0
150 175 200
0 25 50 75 100 125
% of Motor Nameplate Hertz (P29)
Parameter Number
Related Parameter
Access Rule
Data Type
Group
Units
Minimum Value
Maximum Value
Default Value
Chapter 4
82
29, 30
GET/SET
UINT
Advanced Config.
—
0
2
0
Max. Derate
100
80
60
40
20
0
0 25 50 75 100 125 150 175 200
% of Motor Nameplate Hertz (P29)
83
30
GET/SET
UINT
Advanced Config.
x.x Amps
0.0
Hp Dependent
0.0 (Disabled)
151