Emerson SP4403 - Menu 4 Regen Parameter Descriptions; Current Magnitude; Active Current

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102 Unidrive SP Regen Installation Guide
www.controltechniques.com Issue Number: 2
Table 9-4 Menu 4 Regen parameter descriptions
This parameter is the r.m.s. input current to the drive. The phase currents consist of an active component and a reactive component. The three phase
currents can be combined to form a resultant current vector as shown below:
The resultant current magnitude is displayed by this parameter. The active current is the torque producing current for a motor drive and the real
current for a Regen drive. The reactive current is the magnetising or flux producing current for a motor drive.
The active current is the real current in a Regen drive.
The active current is aligned with the y axis of the reference frame. The y axis of the reference frame is aligned with the Regen drive terminal voltage
vector.
Parameter
Range(
Ú) Default(Ö)
Type
4.01 Current magnitude 0 to DRIVE_CURRENT_MAX A RO Uni FI NC PT
4.02 Active current ±DRIVE_CURRENT_MAX A RO Bi FI NC PT
4.04 Current demand ±TORQUE_PROD_CURRENT_MAX % RO Uni FI NC PT
4.05
4.06
4.07 Symmetrical current limit 0 to MOTOR1_CURRENT_LIMIT_MAX % 175.0 RW Uni
4.08 Reactive current reference ±REGEN_REACTIVE_MAX % 0.0 RW Bi US
4.13 Current controller Kp gain 0 to 30,000 90 RW Uni US
4.14 Current controller Ki gain 0 to 30,000 2,000 RW Uni US
4.15 Thermal time constant 0.0 to 400.0 89.0 RW Uni US
4.16 Thermal protection mode 0 to 1 0 RW Uni US
4.17 Reactive current ±DRIVE_CURRENT_MAX A RO Bi FI NC PT
4.18 Overriding current limit 0 to TORQUE_PROD_CURRENT_MAX % RO Uni NC PT
4.19 Overload accumulator 0 to 100.0 % RO Uni NC PT
4.20 Percentage load ±USER_CURRENT_MAX % RO Bi FI NC PT
4.24 User current maximum scaling 0.0 to TORQUE_PROD_CURRENT_MAX % 175.0 RW Uni US
RW Read / Write RO Read only Uni Unipolar Bi Bi-polar Bit Bit parameter Txt Text string
FI Filtered DE Destination NC Not cloned RA Rating dependent PT Protected US User save PS Power down save
4.01 Current magnitude
Drive mode Regen
Coding
Bit SP FI DE Txt VM DP ND RA NC NV PT US RW BU PS
1 121 1 1 1
Range Regen 0 to DRIVE_CURRENT_MAX A
Update rate 4ms
4.02 Active current
Drive mode Regen
Coding
Bit SP FI DE Txt VM DP ND RA NC NV PT US RW BU PS
112111
Range Regen ±DRIVE_CURRENT_MAX A
Update rate 4ms
Direction of active current Power flow
+ From supply
- Into supply
Pr 4.02
Resultant
output current
Pr
4.01
Pr 4.17
y
x