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126 Powerdrive F300 User Guide
Issue Number: 2
If slip compensation is required this parameter should be set to the value
from the rating plate of the motor, which should give the correct rpm for a
hot machine. Sometimes it will be necessary to adjust this when the
drive is commissioned because the nameplate value may be inaccurate.
Slip compensation will operate correctly both below base speed and
within the field weakening region. Slip compensation is normally used to
correct for the motor speed to prevent speed variation with load. The
rated load rpm can be set higher than synchronous speed to deliberately
introduce speed droop. This can be useful to aid load sharing with
mechanically coupled motors.
RFC-A
Rated load rpm is used with motor rated frequency to determine the full
load slip of the motor which is used by the vector control algorithm.
Incorrect setting of this parameter can result in the following:
• Reduced efficiency of motor operation
• Reduction of maximum torque available from the motor
• Failure to reach maximum speed
• Over-current trips
• Reduced transient performance
• Inaccurate control of absolute torque in torque control modes
The nameplate value is normally the value for a hot machine, however,
some adjustment may be required when the drive is commissioned if the
nameplate value is inaccurate. The rated full load rpm can be optimized
by the drive (For further information, refer to section on page 153).
RFC-S
The rated speed is not used by the motor control algorithms, but is used
by the motor thermal protection system.
Enter the name-plate value for the motor rated current.
Enter the value from the rating plate of the motor.
6.3.8 Operating-mode selection
The settings for Pr 0.48 are as follows:
This parameter defines the drive operating mode. Pr mm.000 must be
set to ‘1253’ (European defaults) or ‘1254’ (USA defaults) before this
parameter can be changed. When the drive is reset to implement any
change in this parameter, the default settings of all parameters will be
set according to the drive operating mode selected and saved in
memory.
6.3.9 Status information
This parameter controls access via the drive keypad as follows:
The keypad can adjust this parameter even when user security is set.
The parameter displays the software version of the drive.
00.046 {05.007} Rated Current
RW Num RA US
OL
Ú
±VM_RATED_CURRENT
Ö
Maximum Rated Current
(11.060)
RFC-A
RFC-S
00.047 {05.006} Rated Frequency
00.047 {05.033} Volts per 1000 rpm
RW Num US
OL
Ú
0.0 to 550.0 Hz
Ö
50 Hz default: 50.0 Hz
60 Hz default: 60.0 Hz
RFC-A
Ú
0.0 to 550.0 Hz
RFC-S
Ú
0 to 10000 V / 1000 rpm
Ö
98 V / 1000 rpm
00.048 {11.031} User Drive Mode
RW Txt ND NC PT US
OL
Ú
Open-loop (1), RFC-A (2),
RFC-S (3)
Ö
Open-loop (1)
RFC-A
Ö
RFC-A (2)
RFC-S
Ö
RFC-S (3)
Setting Operating mode
1 Open-loop
2RFC-A
3RFC-S
00.049 {11.044} User Security Status
RW Txt ND PT
OL
Ú
Menu 0 (0), All Menus (1),
Read-only Menu 0 (2),
Read-only (3),
Status Only (4),
No Access (5)
Ö
Menu 0 (0)
RFC-A
RFC-S
Security
level
Description
0
(Menu 0)
All writable parameters are available to be edited but
only parameters in Menu 0 are visible.
1
(All Menus)
All writable parameters are visible and available to be
edited.
2
(Read-only
Menu 0)
All parameters are read-only. Access is limited to Menu 0
parameters only.
3
(Read-only)
All parameters are read-only however all menus and
parameters are visible.
4
(Status Only)
The keypad remains in status mode and no parameters
can be viewed or edited.
5
(No Access)
The keypad remains in status mode and no parameters
can be viewed or edited. Drive parameters cannot be
accessed via a comms / fieldbus interface in the drive or
any option module.
00.050 {11.029} Software Version
RO Num ND NC PT
OL
Ú
0 to 99999999
Ö
RFC-A
RFC-S
00.051 {10.037} Action On Trip Detection
RW Bin US
OL
Ú
00000 to 11111
Ö
00000RFC-A
RFC-S
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