WEG ECW500, Руководство пользователя

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Functional Description .
38 | ECW500
6.2.7 ENABLE ONLINE Digital Input
The ENABLE ONLINE digital input is used to change the operating mode of the ECW500 for the online MPFC
modes (Mode: Power Factor Controller) or MRPC (Mode: Reactive Power Controller), according to the previous
configuration of the online operating mode. It can be used in a complementary way to the DISABLE ONLINE
digital input in the Maintained Button mode.
For the regulator to pass to the online MPFC or MRPC mode directly from the MTVC or MECC modes, it is
necessary that both ENABLE ONLINE and ENABLE PARALLEL digital inputs be activated simultaneously. If only
the ENABLE ONLINE input is activated, no action will be taken by the ECW500 in these modes. If the regulator
is operating in the parallel mode (MTVC_DROOP), simply activate the ENABLE ONLINE digital input to enter the
online MPFC or MRPC modes.
6.2.8 DISABLE ONLINE Digital Input
The DISABLE ONLINE digital input is used to disable the online MPFC or MRPC operating mode of the
ECW500.
If the ECW500 is operating in the online MPFC or MRPC modes and the DISABLE ONLINE digital input is
activated once, the ECW500 will go first to the parallel MTVC DROOP mode. If this same input is activated for
the second time, the ECW500 will go to the off-line MTVC or MECC mode according to the previous
configuration. The DISABLE ONLINE digital input can be used as in a complementary way to the ENABLE
ONLINE digital input in the "Maintained Button" mode.
6.2.9 INCREMENT Digital Input
The INCREMENT digital input is used to increment the reference in any of the operating modes. The portion to
be increased is the same one set as default reference increment of the selected operating mode on the
ECW500. This increment can be increased by means of a multiplier valid for all modes also configurable on the
configuration screen of the digital inputs (parameter 30204).
For example, if the ECW500 is operating in the MTVC mode, each increment in the voltage reference will be 0.1
V times the multiplier. Each time the ECW500 is disabled or an exchange of operating mode occurs, the internal
variable that controls how much increment is added to the reference of the mode is reset to zero. The increment
value can be set before enabling the ECW500.
For the INCREMENT digital input, the action of the control in the Maintained Button mode is different from the
complementary functions. When operating in this mode, while keeping the voltage applied to the digital input,
the increment in the reference will occur continuously until the voltage applied to the digital input is removed or
until the maximum increment value is reached, which is equal to the rated value of the synchronous machine
configured on the ECW500.
NOTE!
This digital input has no complementary relationship with the DECREMENT digital input.
However, if the INCREMENT digital input is activated simultaneously with the DECREMENT, a fault
warning will be generated and the reference will not suffer modifications.
6.2.10 DECREMENT Digital Input
The DECREMENT digital input is used to decrease the reference in any of the operating modes. The portion to
be decreased is the same one set as the default reference decrement of the selected operating mode on the
ECW500. This decrement can be increased by means of a multiplier valid for all modes also configurable on the
configuration screen of the digital inputs (parameter 30204).
For example, if the ECW500 is operating in the MTVC mode, each decrement in the voltage reference will be
0.1 V times the multiplier. Each time the ECW500 is disabled or an exchange of operating mode occurs, the
internal variable that controls how much decrement is subtracted from the reference of the mode is reset to
zero. The decrement value can be set before enabling the ECW500.
For the DECREMENT digital input, the action of the control in the Maintained Button mode is different from the
complementary functions. When operating in this mode, while keeping the voltage applied to the digital input,