WEG CFW-10 EASYDRIVE User Manual page 57

[Factory Setting]
Parameter
P120
Digital Reference
Backup
P121
Frequency
Reference by 0.1Hz (<100Hz);
key and
P122
JOG Reference
0.1Hz (<100Hz);
CHAPTER 6 - DETAILED PARAMETER DESCRIPTION
Range
0 to 2 Defines if the inverter should save or not the last used
[ 1 - active] digital reference. This backup function is only applicable
- to the keypad reference (P12).
If the digital reference backup is inactive (P120=0), the
reference will be equal to the minimum frequency every
time the inverter is enabled, according to P133.
When P120=1, inverter saves automatically the digital
reference value, (independent of the reference source,
keypad, EP).
This occurs always when inverter disable is present,
independent of the present disable condition (ramp or
general), error or undevoltage.
When P120=2, the initial reference will be given by
P121,and saved always the inverter is enabled.
Application example: reference via EP when inverter is
disabled via digital input and decelerates EP (coming to
reference 0).
However at a new enable, it is desired that the inverter
returns to a frequency different from the minimum
frequency, which will be saved at Parameter P121.
P133 to P134 Defines the keypad reference value that can be set by
[ 3.0Hz ] using the keys
or P005 are being displayed on the HMI Display.
1Hz (>99.9Hz) The keys
mode) or P222=0 (in remote mode).The value of P121
is maintained at the last set value, even when inverter is
disabled or turned OFF, provided P120=1 or 2 (backup
active).
Defines the frequency reference (speed) for the JOG
P133 to P134
function.
[ 5.0Hz ]
The JOG function can be activated by using the digital
inputs
1Hz (>99.9Hz)
The inverter must be disabled by ramp (stopped motor)
to operate in the JOG function. Thus if the control source
is via terminal, there must be at least one digital input
programmed as start/stop enabling (otherwise E24 will
be displayed), which must be OFF to enable the JOG
function via digital input. (See P263 to P266).
The direction of rotation is defined by the parameter P231.
Description / Notes
P120
0
1
Active, but always given by P121,
2
independently of the source reference
and
and
Reference Backup
Inactive
Active
when the parameters P002
are enabled if P221=0 (in local
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