SF01U 29
13.2 ELECTRONIC PROGRAMMING MODULE (EPM)
Every SCF Series drive has an Electronic Programming Module (EPM) installed on the main
control board. The EPM stores the user’s parameter settings and special OEM default settings
(if programmed). The EPM is removable, allowing it to be installed in another drive for quick
set-up. For example, if a drive is being replaced with a new one, the EPM can be taken out
of the first drive and installed in the new drive. Downtime is minimized because the new drive
does not require programming - it is ready to run when the EPM is installed.
The SCF Series drive contains two or three sets of parameter values, depending on whether
the drive has been programmed with optional OEM default settings. The first set of values
is the factory default settings, which are permanently stored on the main control board and
cannot be changed. The second set of values is the user settings, which are stored in the
EPM. When the drive leaves the factory, the user settings are the same as the factory default
settings, but the user settings can be changed to configure the drive for a particular application.
The optional third set of values is the OEM default settings, which are also stored in the EPM.
OEM default settings are typically used in cases where many drives are used for the same
application, which requires that all of the drives have the same parameter settings. The OEM
default settings cannot be changed without the optional EPM Programmer. The drive can
be programmed to operate according to the user settings or the OEM default settings (see
Parameter 48 in Section 15.0).
NOTE
The drive will not operate without the EPM installed. The drive will display
“F1” if the EPM is missing or damaged.
STOP!
Do not remove the EPM while power is applied to the drive. Damage to the
EPM and/or drive may result.
An EPM Programmer is available as an option from Lenze AC Tech, which has the ability to
quickly and easily program many SC Series drives for the same configuration. Once a “master”
EPM is programmed with the desired parameter settings, the EPM Programmer can copy
those settings to other EPMs, allowing many drives to be configured very quickly. Please
consult the EPM Programmer Instruction Manual or contact the factory for more information.
If the OEM settings in the EPM become corrupted, the drive will operate normally, until an
attempt is made to perform a RESET OEM using Parameter 48 - PROGRAM SELECTION.
The drive will then flash “GF” to indicate that the OEM settings are no longer valid. This will
require that the EPM be re-programmed using the optional EPM Programmer.
If the OEM settings and the user settings are both corrupted, the drive will display “GF”
immediately and the drive will require a RESET 60 or RESET 50 using Parameter 48
- PROGRAM SELECTION. Once the RESET is performed, the parameters can then be
programmed individually to match the OEM default settings. This will allow the drive to
operate as if it were in OEM mode, even though it is actually operating in USER mode. Refer
to Parameter 48 in Section 15.0 - DESCRIPTION OF PARAMETERS.
NOTE
The drive will also display “GF” if a RESET OEM or OPERATE WITH OEM
SETTINGS is attempted when the EPM does not contain OEM defaults.
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