WEG CFW700 Serie Manual Del Usuario página 50

DIx - Start
Open
24 V
DIx - Stop
Motor speed
Figure 4.7: Operation of the 3-Wire Start/Stop Application
It is necessary to set the parameter P0224 or P0227 to 4 = SoftPLC for the operation of the
3-Wire Start/Stop application.
Definitions:
The Function 1 of the Application at parameters P0263 to P0270 represents the Start
„
command.
The Function 2 of the Application at parameters P0263 to P0270 represents the Stop
„
command.
The Start command is done by one of the digital inputs (DI1 to DI8). It is necessary to set one
of the DI's parameters (P0263 to P0270) to 20 = Function 1 of the Application. If more than one
digital input is set for this function, the logic operation will consider only the command of the
high priority level digital input, where: DI1>DI2>DI3>DI4>DI5>DI6>DI7>DI8. If any digital inputs
is set, the following alarm message will be displayed: "A0750: Set a DI for Function 1 of the
Application (Start)" and the operation of the application will not be enabled.
The Stop command is also done by one of digital inputs (DI1 to DI8). However, it is necessary
to set one the DI's parameters (P0263 to P0270) to 21 = Function 2 of the Application. If more
than one digital input is set for this function, the logic operation will consider only the command
of the high priority level digital input, where: DI1>DI2>DI3>DI4>DI5>DI6>DI7>DI8. If any digital
inputs is set, the following alarm message will be displayed: "A0752: Set a DI for Function 2 of
the Application (Stop)" and the operation of the application will not be enabled.
Both Start and Stop inputs are active when 24 V is applied and inactive when 0 V is applied.
With the inverter enabled in local or remote mode, with no fault, without undervoltage, no A0750
and A0752 alarm, the "General Enable" command is performed in the inverter. In case some
digital input is set to "General Enable" function, the inverter will effectively be enabled when the
two command sources are active.
NOTE!
In case the 3-Wire command application (Start/Stop) has been selected
to operate in local mode and DI1 (P0263) is selected for the Start or Stop
command, the inverter may go to the "configuration (CONF)" status; then it is
necessary to change the default programming of parameter P0227.
Keypad (HMI) and Basic Programming
24 V
Open
Time
Time
Time
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