User`s guide

93
CHAPTER 6 - DETAILED PARAMETER DESCRIPTION
Range
[Factory Setting]
Parameter
Unit
Description / Notes
P120
0 to 2
Digital Reference
[ 1 ]
Backup
-
It defines if the inverter should save or not the last used
digital reference. This backup function is only applicable
to the keypad reference (P121).
If the digital reference backup is inactive (P120 = 0), the
frequency reference will be equal to the minimum
frequency every time the inverter is enabled, according
to P133.
If P120 = 1, the inverter stores the digital reference value
automatically (for either keypad, EP or serial reference
source) every time the inverter is disabled, either by a
disable condition (Start/Stop or General Enable), error
orundervoltage.
If P120 = 2, then every time the inverter is enabled its
initial reference is given by the value adjusted in the
parameter P120, which remains stored, regardless of
the reference source.
Application example: when the reference is via EP and
the inverter is disabled via the EP Deceleration digital
input, its reference is reduced to 0 (zero). When P120 =
2, then at a new enabling the inverter accelerates to the
value programmed in P121, not to the minimum
reference.
P121
P133 to P134
Keypad
[ 3.00 Hz ]
Reference
0.01 Hz
(

99.99 Hz);
0.1 Hz
(

100.0 Hz)
Allows the setting of the output frequency to the motor
through and keys.
This setting may also be performed while visualizing
parameters P002 and P005.
The ke
ys
and
are enabled if P221 = 0 (in local
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).
P120
0
1
2
Reference Backup
Inactive
Active
Active, but always given by P121,
independently of the sorce reference
Table 6.3 -
Digital reference backup configuration