WEG CFW-09 User Manual page 220

CHAPTER 6 - DETAILED PARAMETER DESCRIPTION
The setpoint can be defined:
Keypad: parameter P525.
Analog inputs AI1', AI2', AI3', AI4', (AI1'+ AI2')>0, (AI1'+ AI2'), Multispeed,
Serial, Fieldbus and PLC.
NOTE!
When P203 = 1, do not use the reference via E.P. (P221/P222 = 7).
When the PID function (P203 = 1) is set:
The following parameters are automatically changed: P223 = 0 (always forward),
P225 = 0 (JOG disabled), P226 = 0 (always forward), P228 = 0 (JOG disabled),
P237 = 3 (PID process variable) e P265 = 15 (Manual/Automatic).
The JOG Function and the direction of rotation function remain disabled. The
Enabling and Start/Stop controls are defined in P220, P224 and P227.
The digital input DI3 is programmed automatically for the function Manual/
Automatic (P265 = 15), according to table 6.64.
The change between Manual/Automatic can be realized by one of the digital
inputs DI3 to DI8 (P265 to P270).
Parameter P040 indicates the value of the Process Variable feedback) in the
chosen scale/unit. This parameter can be selected as monitoring variable
(refer to item 4.2.2), provided P205 = 6. To prevent the saturation of the analog
feedback input during the regulation "overshoot", the signal must vary between
0 V to 9.0 V [(0 to 18) mA / (4 to 18) mA]. The adaptation between the
setpoint and the feed back can be realized by changing the gain of the selected
analog input as feedback (P238 for AI2 or P242 for AI3). The Process Variable
can also be displayed at the outputs AO1 to AO4 provided they were
programmed at P251, P253, P255 or P257. The same is valid for the PID
setpoint.
The outputs DO1, DO2 and RL1 to RL3 can be programmed (P275 to P277,
P279 or P280) to the functions of the Process Variable > VPx (P533) and
Process Variable < VPy (P534).
When the setpoint is defined by P525 (P221 or P222 = 0), and if it is changed
from manual to automatic, following setting P525 = P040 is performed
automatically, provided the parameter P536 is active. In this case, the
commutation from manual to automatic is smooth (there is no abrupt speed
oscillation).
In case of function "Stop Logic" is active (P211 = 1) and P224 = 0, P224 is
automatically changed to the option "Digital Input (DIx)" (P224 = 1).
In case of function "Stop Logic" is active (P211 = 1) and P227 = 0, P227 is
automatically changed to the option "Digital Input (DIx)" (P227 = 1).
DIx Operating Mode
0 (0 V) Manual
1 (24 V) Automatic
Table 6.64 - DIx operating mode
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