Programming the Control
Signal Terminals
01/02 AWB8230-1413GB
82
Motor potentiometer functions: accelerate (UP) –
decelerate (DWN) – reset frequency (UDC)
Accelerate (UP) and decelerate (DWN)
If you configure one of the programmable digital inputs as UP or
DWN (or two programmable digital inputs as UP and DWN), an
additional acceleration (with the UP input active) or deceleration
(with the DWN input active) can be carried out, starting with the
specified frequency setpoint.
X
Because the terminal functions UP and DWN can be used only
when the frequency setpoint has been specified with PNU F001
or A020, you need to make sure that PNU A001 contains the
value 02.
X
Then, program one or two of the digital inputs 1 to 5 as UP or
DWN by setting the corresponding PNU (C001 to C005) to 27
or 28.
The UP/DWN function is not available when jog mode has been
activated (with active JOG input) or when the frequency setpoint
definition is made through the analog input terminals.
The output frequency range for UP and DWN ranges from 0 Hz up
to the end frequency specified under PNU A004 (
a
section “End
frequency”, page 108).
The shortest permissible duration during which an UP or DWN
input must be active is 50 ms.
Through the use of the input configured as UP, the frequency
setpoint set under PNU A020 is also increased or, with DWN,
reduced (
a
fig. 74).
Reset frequency (UDC)
If you configure one of the programmable digital inputs as UDC,
you can use this input to reset the frequency set with the motor
potentiometer to 0 Hz. PNU A020 is then reset to 0 Hz.
X
Program one of the digital inputs 1 to 5 as UDC by entering the
value 29 under the corresponding PNU (C001 to C005).
Figure 73:
Digital input FW configured as FWD (start/stop clockwise
operation), 3 as UP (accelerate), 4 as DWN (decelerate)
and 5 as REV (start/stop anti clockwise operation)
DWN
FWD
UP
P24
FW
3
4
REV
5
Figure 74:
Function chart for UP/DWN (acceleration/deceleration –
motor potentiometer)
f
o
: Output frequency
REV
UP
DWN
f
O
PNU
Name
Adjustable in RUN mode
Value
Function
WE
Normal
Extended
A001
Defined
frequency
setpoint
–
–
00
Definition with the potentiometer on the keypad
01
01
Definition through analog input O (0 to 10 V) or OI
(4 to 20 mA)
02
Definition through PNU F001 and/or PNU A020
03
Definition through RS 485
04
Definition through slot 1 for optional module
05
Definition through slot 2 for optional module
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