Parameter Description Format; Software Variable Maximum Term Definitions; Parameter Information - Control Techniques Commander SK Advanced User's Manual

Introduction Parameter x.00
3

Parameter description format

3.1

Software variable maximum term definitions

Table 3-1
Maximum
FREQ_MAX
[1500.0Hz]
RATED_CURRENT_MAX
[999.9A]
DRIVE_CURRENT_MAX
[999.9A]
MOTOR1_CURRENT_LIMIT_MAX
[999.9%]
MOTOR2_CURRENT_LIMIT_MAX
[999.9%]
TORQUE_PROD_CURRENT_MAX
[999.9%]
USER_CURRENT_MAX
[999.9%]
AC_VOLTAGE_SET_MAX
[480V]
AC_VOLTAGE_MAX
[618V]
DC_VOLTAGE_SET_MAX
[800V]
DC_VOLTAGE_MAX
[830V]
POWER_MAX
[999.9kW]
The values given in square brackets indicate the maximum value allowed for the variable maximum. The term 'rated drive current' is the value used
by the software as rated current, which is not always the same as the drive rating specified in Pr 11.32 (see section 9.5 Menu 4: Current control ).
3.2

Parameter information

3.2.1 Parameter x.00
Pr x.00 in every menu is used for storing parameters. The range of this parameter is 4000 and the special codes used are as follows:
1000 Save parameters
1070 Option reset
6
Parameter Keypad and
description format display
Maximum frequency reference
FREQ_MAX = Pr 1.06
(If the second motor map is selected Pr 21.01 is used instead of Pr 1.06)
Maximum motor rated current
RATED_CURRENT_MAX ≤ 1.36 x Rated drive current
On drives that offer dual rating, the rated current can be increased above the rated drive current up to a
level not exceeding 1.36 x drive rated current. The actual level varies from one drive size to another.
Maximum drive current
The maximum drive current is the current at the over current trip level and is given by:
DRIVE_CURRENT_MAX = rated drive current * 2
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. See introduction to section 9.5 Menu 4: Current control for the definition.
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. See introduction to section 9.5 Menu 4: Current control for the definition.
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
CURRENT_LIMIT_MAX.
USER_CURRENT_MAX = Pr 4.24
Maximum output voltage set-point
Defines the maximum motor voltage that can be selected.
200V drives: 240V
400V drives: 480V
Maximum AC output voltage
This maximum has been chosen to allow for maximum AC voltage that can be produced by the drive
including trapizoidal operation:
AC_VOLTAGE_MAX = 0.7446 x DC_VOLTAGE_MAX
200V drives: 309V
400V drives: 618V
Maximum DC voltage set-point
200V rating drive: 0 to 400V
400V rating drive: 0 to 800V
Maximum DC bus voltage
The maximum measurable DC bus voltage.
200V drives: 415V
400V drives: 830V
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 a.c. output voltage, maximum controlled current and unity power factor. Therefore
POWER_MAX = √3 x AC_VOLTAGE_MAX x RATED_CURRENT_MAX x 1.5
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