WEG CFW700, Programming And Troubleshooting Manual

Page: 133 / 223

Digital and Analog Inputs and Outputs
13
CFW700 | 13-3
Description:
The functions of the analog inputs are defined in those parameters.
When the option 0 (Speed Reference) is selected, the analog inputs are able to supply the reference for the
motor, subject to the specified limits (P0133 and P0134) and to the ramp action (P0100 to P0103). Therefore, it is
also necessary to configure the parameters P0221 and/or P0222, selecting the use of the desired analog input.
For more details refer to the description of those parameters in the
section 13.2 - Local and Remote Command ,
and to the figure 13.7 in this manual.
The option 1 (No Ramp Reference – valid only for the vector mode)
is used generally as an additional
reference signal, for instance in applications using a dancer. Refer to the figure 13.7 , option without acceleration
and deceleration ramp.
The option 2 (Maximum Torque Current)
makes it possible that the forward and reverse torque current
limit control be done by means of the selected analog input. In this case P0169 and P0170 are not used.
The adjustment done at the analog input AI1 or AI2 can be monitored via parameters P0018 or P0019
respectively. The value presented at this parameter will be the maximum torque current expressed as a
percentage of the motor rated current (P0401). The indication range will be from 0...200 %. When the analog
input is equal to 10 V (maximum), the corresponding monitoring parameter will show 200 %, and the value of
the maximum forward and reverse torque current will be 200 %. In order that the expressions which determine
the total current and the maximum torque developed by the motor (
section 11.5 - Torque Control , and item
11.8.6 - Torque Current Limitation ) remain valid, replace P0169, P0170 by P0018 or P0019.
The option 3 (SoftPLC)
sets the input to be used by the programming done in the SoftPLC reserved memory
area. Refer to the SoftPLC manual for more details.
The option 4 (PTC)
configures the input for motor temperature monitoring by means of a PTC type sensor, when
it is present in the motor. Therefore it is also necessary to configure one analog output (AO) as a current source
for feeding the PTC. More details of this function are described in the
section 15.2 - Motor Overtemperature
Protection .
The options 5 to 12 (Application Function)
sets the input to be used by the applications. For more details,
refer to chapter 19 - Applications .
P0232 – AI1 Gain
P0237 – AI2 Gain
Adjustable
Range:
0.000 to 9.999 Factory
Setting:
1.000
P0234 – AI1 Offset
P0239 – AI2 Offset
Adjustable
Range:
-100.00 to 100.00 % Factory
Setting:
0.00 %