Lenze E94P PositionServo with MVOB - Manual (Page 75)

S94H201E_13426446_EN L 73
Operation
6.3 Parameter Storage and EPM Operation
6.3.1 Parameter Storage
All settable parameters are stored in the drive’s internal non-volatile memory. Parameters are saved
automatically when they are changed. In addition, parameters are copied to the EPM memory module
located on the drive’s front panel. In the unlikely event of drive failure, the EPM can be removed and inserted
into the replacement drive, thus making an exact copy of the drive being replaced. This shortens down time
by eliminating the configuration procedure. The EPM can also be used for replication of the drive’s settings.
6.3.2 EPM Operation
When the drive is powered up, a comparison is made between the drive’s internal memory and the EPM. If
a correctly formatted EPM is inserted, the EPM will over-ride the internal memory with the settings of the
new EPM. This allows the user to replace/clone existing drives. If the drive being cloned is of a lower power
rating than the original drive and the current settings exceed the max settings of the new drive, then the
current settings will default to the max settings.
STOP!
Never install or remove the EPM module while the drive is powered.
Most Lenze-AC Tech products use the EPM for memory storage on the drive. The memory size of the EPM
is denoted by its color and drive format structure. The PositionServo drive uses a white EPM module. When
the drive is powered up it checks the format style of the EPM in the EPM port. If the EPM Port is empty, or
a different color EPM is inserted, the drive will display “
-EP-” ” and no further operation is possible until
a white EPM is inserted. If a white EPM with an older format or a new/blank EPM is inserted, the drive will
display “FEP?” (format EPM). The drive is asking the user if he wants to reformat the EPM. To reformat the
EPM, press the recessed carriage return button [
] on the front of the drive. If you do not wish to reformat,
power down the drive and remove the EPM from the drive.
STOP!
If the EPM contains any data from an existing drive, that data will be overwritten during
this procedure. During the reformatting process, some of the data from the internal
memory will be written to the EPM and some of the settings will be set to default. Check
all parameters.
6.3.3 EPM Fault
If the EPM fails during operation or the EPM is removed from the EPM Port, the drive will generate a fault
and display “
-EP-” ”. The fault is logged to the drive’s fault history. The fault log will list fault code 38, EPM
Failure. Further operation is not possible until the EPM is replaced (inserted) and the drive’s power is cycled.