Emerson unidrive sp User Manual page 133

Safety Mechanical
Product
Information information Installation
Maximum
MOTOR1_CURRENT_LIMIT_MAX
[1000.0%]
MOTOR2_CURRENT_LIMIT_MAX
[1000.0%]
TORQUE_PROD_CURRENT_MAX
[1000.0%]
USER_CURRENT_MAX
[1000.0%]
POWER_MAX
[9999.99kW]
The values given in square brackets indicate the absolute maximum value allowed for the variable maximum.
Unidrive SP Free Standing User Guide
Issue Number: 1
Electrical Getting Basic Running the
Installation Started parameters
Maximum current limit settings for motor map 1
This maximum current limit setting is the maximum applied to the current limit parameters in motor map 1.
Open Loop
√[
[
Maximum
= Motor rated current
current limit
Where:
The Maximum current is either (1.5 x K
maximum Heavy Duty current rating given by Pr 11.32, otherwise it is (1.1 x Normal Duty rating).
Motor rated current is given by Pr 5.07
PF is motor rated power factor given by Pr 5.10
Closed Loop vector
√[
[
Maximum
= Motor rated current
current limit
Where:
The Maximum current is either (1.75 x K
maximum Heavy Duty current rating given by Pr 11.32, otherwise it is (1.1 x Normal Duty rating).
Motor rated current is given by Pr 5.07
ϕ = cos-1(PF) - ϕ
. This is measured by the drive during an autotune. See Menu 4 in the Advanced User
1 2
Guide for more information regarding ϕ2.
PF is motor rated power factor given by Pr 5.10
Servo
[
Maximum current
Maximum
=
current limit
Motor rated current
Where:
The Maximum current is either (1.75 x K
maximum Heavy Duty current rating given by Pr 11.32, otherwise it is (1.1 x Normal Duty rating).
Motor rated current is given by Pr 5.07
Maximum current limit settings for motor map 2
This maximum current limit setting is the maximum applied to the current limit parameters in motor map 2.
The formulae for MOTOR2_CURRENT_LIMIT_MAX are the same for MOTOR1_CURRENT_LIMIT_MAX
except that Pr 5.07 is replaced with Pr 21.07 and Pr 5.10 is replaced with Pr 21.10.
Maximum torque producing current
This is used as a maximum for torque and torque producing current parameters. It is
MOTOR1_CURRENT_LIMIT_MAX or MOTOR2_CURRENT_LIMIT_MAX depending on which motor map is
currently active.
Current parameter limit selected by the user
The user can select a maximum for Pr 4.08 (torque reference) and Pr 4.20 (percentage load) to give suitable
scaling for analog I/O with Pr 4.24. This maximum is subject to a limit of MOTOR1_CURRENT_LIMIT_MAX. or
MOTOR2_CURRENT_LIMIT_MAX depending on which motor map is currently active.
USER_CURRENT_MAX = Pr 4.24
Maximum power in kW
The maximum power has been chosen to allow for the maximum power that can be output by the drive with
maximum AC output voltage, maximum controlled current and unity power factor. Therefore:
Software V01.07.01 and earlier: POWER_MAX = √3 x AC_VOLTAGE_MAX x RATED_CURRENT x 1.75
Software V01.08.00 and later: POWER_MAX = √3 x AC_VOLTAGE_MAX x DRIVE_CURRENT_MAX
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SMARTCARD
Optimization
motor operation
Definition
]
Maximum current
2
2
+ PF - 1
PF
) when the motor rated current set in Pr 5.07 is less than or equal to the
C
]
Maximum current
2
+ cos(ϕ
1
cos(ϕ )
1
) when the motor rated current set in Pr 5.07 is less than or equal to the
C
]
x 100%
) when the motor rated current set in Pr 5.07 is less than or equal to the
C
Technical
Onboard Advanced
Diagnostics
PLC parameters Data
]
x 100%
]
2
) - 1
x 100%
UL Listing
Information
133