Rockwell Automation 294E ArmorStart LT EtherNet/IP Version - User Manual - Manual (Page 151)

Rockwell Automation Publication 290E-UM001B-EN-P - June 2012 151
Bulletin 290E/291E/294E Programmable Parameters Chapter 4
Figure 55 - Overload Trip Curves
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
2
T
motor overload function.
0 = NoDerating
1 = MinDerating
2 = MaxDerating
Parameter Number 82
Related Parameters 29, 30
Access Rule GET/SET
Data Type UINT
Group Advanced Config.
Units —
Minimum Value 0
Maximum Value 2
Default Value 0
Min. Derate
0
80
100
60
40
20
% of Motor Overload Current (P30)
No Derate
0
80
100
60
40
20
% of Motor Nameplate Hertz (P29)
% of Motor Overload Current (P30)
% of Motor Nameplate Hertz (P29)
% of Motor Overload Current (P30)
% of Motor Nameplate Hertz (P29)
Max. Derate
0
80
100
60
40
20
0 200 175 150 125 100 75 50 25 0 200 175 150 125 100 75 50 25 0 200 175 150 125 100 75 50 25
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
Parameter Number 83
Related Parameter 30
Access Rule GET/SET
Data Type UINT
Group Advanced Config.
Units x.x Amps
Minimum Value 0.0
Maximum Value Hp Dependent
Default Value 0.0 (Disabled)