Emerson E300 Series Design Manual page 130

Advanced elevator drive / dedicated elevator variable speed ac drive for induction and permanent magnet motors
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3: Auto
Setting A03 (N01) = Auto (3) and initiating a drive reset will transfer the parameter data from the drive to a parameter file with file identification number
1 (any existing file will be overwritten). When the action is complete this parameter remains at 3.
If the NV Media Card is removed when this parameter remains at 3, then parameter cloning is set to None (0), which forces the user to change
parameter A03 (N01) back to Auto (3) if auto is still required. The user needs to set parameter A03 (N01) = Auto (3) and initiate a drive reset to write
a complete parameter set to a new NV Media Card.
When a parameter in User menu A is changed via the keypad and A03 (N01) = Auto (3), the parameter is saved both to the drive non volatile memory
and to the parameter file with identification number 1 on the NV Media Card. Only the new value of the modified parameter, and not the value of all
the other drive parameters, is stored each time. If A03 (N01) is not cleared automatically when an NV Media Card is removed, then when a new card
is inserted that contains a parameter file with identification number 1. The modified parameter would be written to the existing file on the new card and
the rest of the parameters in this file may not be the same as those in the drive.
When A03 (N01) = Auto (3) and the drive parameters are saved to non volatile memory, the file on the NV Media Card is updated, therefore this file
becomes a copy of the drive parameters. At power up if A03 (N01) = Auto (3) the drive will save the parameter set to the NV Media Card. This
ensures that if an NV Media Card is inserted when the drive is powered Off, the new NV Media Card has the correct data when the drive is powered
up again.
4: Boot
When A03 (N01) = Boot (4), the drive operates in the same way as with A03 (N01) = Auto (3) and automatically creates a copy of its parameters to
the NV Media Card. The NC (not clonable) attribute for A03 (N01) is 1, and so it does not have a value stored in the parameter file on the NV Media
Card in the normal way. However the value of A03 (N01) is held in the parameter file header. If A03 (N01) = Boot (4) in the parameter file with a file
identification value of 1 on an NV Media Card fitted to a drive at power-up, then the parameters from the parameter file with file identification number
1 are transferred to the drive and saved in non volatile memory. A03 (N01) is then set to None (0) after the data transfer is complete.
It is possible to create a bootable parameter file by setting Pr mm00 = 2001 and initiating a drive reset. This file is created in one operation and is not
updated when further parameter changes are made.
When the drive is powered up, it detects which option modules are installed before loading parameters from an NV Media Card which has been set-
up for boot mode. If a new option module has been installed since the last time the drive was powered up, a Slot1 Different trip is initiated and the
parameters are then transferred from the NV Media Card. If the parameter file includes the parameters for the newly installed option module, then
these are also transferred to the drive and the Slot1 Different trip is reset. If the parameter file does not include the parameters for the newly installed
option module, then the drive does not reset the Slot1 Different trip. Once the transfer is complete, the drive parameters are saved to non volatile
memory and the Slot1 Different trip can be reset either by initiating a drive reset or by powering down and then powering up again.
A04 {J22}
Total Output Current
RO
Num
OL
+ VM_DRIVE_CURRENT_
RFC-A
UNIPOLAR A
RFC-S
A04 (Total Output Current J22)
The total output current is the instantaneous drive output current scaled so that it represents the rms phase current in Amps under steady state
conditions.
A05 {J23}
Percentage Load
RO
Num
OL
RFC-A
+ VM_USER_CURRENT %
RFC-S
A05 (Percentage Load J23)
The percentage load displays Torque Producing Current (J24) as a percentage of the rated torque producing current for the motor. Positive values
indicate motoring and negative values represent regenerating.
130
Electrical
Getting
User Menu
installation
started
A
ND
NC
PT
FI
ND
NC
PT
FI
Advanced
Commissioning
Diagnostics Optimization CT MODBUS RTU Technical Data
Parameters
E300 Design Guide
Issue Number: 1

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