Reactive Current (Motor Magnetising Current); Overriding Current Limit; Motor Overload Accumulator; Percentage Load/Load Display Units - Emerson 2202 Advanced User's Manual

Parameter
Menu 4 Introduction
x.00
4.17

Reactive current (motor magnetising current)

Bit SP
Coding
±DRIVE_CURRENT_MAX A
Range
Update rate Background
This parameter is proportional to the length of the vector in the x axis of the reference frame and is equivalent to the reactive current (magnetising
current) in each output phase in amps.
4.18

Overriding current limit

Bit SP
Coding
Range 0 to TORQUE_PROD_CURRENT_MAX %
Update rate Background
This parameter gives an indication of the internal CURRENT_LIMIT_MAX as defined above.
4.19

Motor overload accumulator

Bit SP
Coding
Range 0.0 to 100.0%
Update rate Background
This parameter gives a continuous indication of modelled motor temperature as a percentage of the trip level.
When this parameter reaches 75% (and the load is above 105%), the drive will flash 'OVL.d' on the display to indicate that the motor temperature is
excessive and the motor current should be reduced to stop the drive from tripping on 'It.AC'
When this parameter reaches 100%, the drive will give an 'It.AC' trip or apply a restriction on the current limit (see Pr 4.16 on page 68).
The level of the accumulator is given by:
⎛ 2 -t Pr 4.15
(
Pr 4.01 1 e –
⎜ ------------------------------------------------------------ -
Pr 4.19 =
⎝
( Pr 5.07 × 1.05
Also see Pr 4.15 on page 68.
4.20 Percentage load
Bit SP
Coding
±USER_CURRENT_MAX%
Range
Update rate Background
This parameter indicates the drive loading as a percentage of rated active current, where the 100% rated active current is Pr 5.07 x Pr 5.10.
Therefore:
Motor active current (Pr 4.02)
----------------------------------------------------------------------------------------------------------------------------------------------------
Pr 4.20 =
Motor rated current (Pr 5.07)
A positive value in this parameter indicates motoring load and a negative value indicates a regenerating load.
4.21 Load display units {22}
Bit SP
Coding
Range Ld(0) or A(1)
Default Ld(0)
Update rate Background
0: Ld Value of Pr 4.20 displayed.
1: A Value of Pr 4.01 displayed.
This parameter defines whether the load indication in the display status mode displays percentage load or output current
4.22 to 4.23 Unused parameters
70
Parameter Keypad and
description format display
FI DE Txt VM DP ND
1 1 2 1
FI DE Txt VM DP ND
1 1 1
FI DE Txt VM DP ND
1 1
⁄
⎞
)
⎟ ×
100%
2
⎠
)
FI DE Txt VM DP ND
1 1 1 1
× Power factor (Pr 5.10)
FI DE Txt VM DP ND
1
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Serial CT Modbus PLC Ladder
communications RTU programming
RA NC NV PT US RW BU
1 1
RA NC NV PT US RW BU
1 1
RA NC NV PT US RW BU
1 1
RA NC NV PT US RW BU
1 1
×
100%
RA NC NV PT US RW BU
1 1
Advanced parameter
CTSoft Menu 0
PS
PS
1
PS
1
PS
PS
1
Commander SK Advanced User Guide
Issue Number: 9
descriptions