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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.
An EPM Programmer is available as an option from 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then flash “GF” to indicate that the OEM settings are no longer valid.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 drive is not equipped with the OEM default option.
WARNING!
Do not remove the EPM while power is applied to the drive. Damage to the EPM and/or drive may
result.
