User`s guide

110
CHAPTER 6 - DETAILED PARAMETER DESCRIPTION
Range
[Factory Setting]
Parameter
Unit
Description / Notes
P231
(3)
0 to 3
Forward/Reverse
[ 2
]
Selection - Local
-
and Remote
Defines the direction of rotation.
Table 6.16
- Programming P231 for direction of
rotation selection
P231
0
1
2
3
Direction of Rotation
Always forward
Always reverse
Commands as defined in
P229 and P230
DIx
P233
0 or 1
AnalogInput
[ 1 ]
Dead Zone
-
Thedead zone removal function is helpful when the user
whishes to operate withonlya restricted range of values,
without losing the analog input resolution.
This parameter works only for analog inputs (AIx)
programmed for frequencyreference.
It defines whether the analog input dead zone is:
Inactive = 0 or Active = 1.
IfP233= 0(Inactive),the signal atthe analoginputsactson
thefrequencyreferencestartingfromtheminimumfrequency
programmed at P133, up to the maximum frequency
programmed at P134, by changing the signal from 0 V/0
mA/4 mA to 10 V/20 mA, according to the figure 6.17.
P134
Reference
0
Alx Signal
P133
0
................
10 V
0
................
20 mA
4 mA
...........
20 mA
Figure 6.17 -
Analog input response with Inactive (P233 = 0)
Dead Zone
If P233 = 1 (Active), the signal at the analog inputs has a
dead zone where the frequency reference remains atthe
minimum reference value (P133), even with thevariation
of the input signal, according to the figure 6.18.
WhenP231 = 3, the DIxprogrammed forspeed direction
in P264,P265, P266,P267 or P268 defines the Forward
speed direction when Inactive, and Reverse whenActive.
This speed direction definition prevails overanyotherthat
maybeprogrammedin theinverter.Opposite tothe option
P231 = 2,which depends on thelocalor remotesituation.