Delta VFD-EL-W Series, Руководство пользователя

Страница: 136 / 197

Chapter 4 Parameters

VFD-EL-W
4-94
10.43 Pump’s Error Treatment
Settings Bit0–Bit2 Default: 1

This parameter is only valid for master pump settings.

Bit0: Determines whether the erroneous pump switches to an alternative pump when an error occurs in the
running pump.
0: All pumps stop.
1: Switch to an alternative pump
Example:
When Bit0=0, and if an error occurs in the running pump, all pumps stop.
When Bit0=1, and if an error occurs in the running pump, switch the erroneous pump to an alternative pump.

Bit1: Determines the erroneous pump to be in a standby or stop status after reset.
0: Set the erroneous pump to be in a standby status after reset (the pump receives the RUN command).
1: Set the erroneous pump to be in a stop status after reset (the pump does not receive the RUN command).
Example:
When Bit1=0, and after resetting the erroneous pump, you can control its running through the controller.
When Bit1=1, and after resetting the erroneous pump, you cannot control its running through the controller
until the master pump gives the STOP command.

Bit2: Determines whether the master pump receives the RUN command or not when an error occurs in the
running pump.
0: When an error occurs in the running pump, the master pump does not receive the RUN command.
1: When an error occurs in the running pump, the master pump can choose to run with an alternative pump,
instead of the erroneous pump.
Example:
When Bit2=0, the master pump does not receive the RUN command when an error occurs in drive #2.
When Bit2=1, the master pump receives the RUN command and choose to run with an alternative pump
when an error occurs in drive #2.
This parameter setting is only valid for AUTO mode.
10.44
Selection of Pump’s Start-up Sequence
Settings 0–1
0: By pump ID#
1: By running time Default: 0

0: By pump ID#, (1  2  3  4  1)

1: By the shortest running time
10.45

Running Time of Multi-pump Under Alternative Operation
Settings 0.0–360.0 sec. Default: 60.0

This parameter is only valid for master pump settings.

Sets the time for switching the master pump and the slave pump.
10.46 Reserved
10.47 Reserved
10. 48 Reserved
10.49

Specify the Setting for Pr.10.12 [PID Deviation Level]
Settings 0–1
0: Use the existing setting (default), and check for any error per the
feedback deviation.
1: Set the low water pressure percentage (%), and check for any error
per the physical quantity feedback. Default: 0

When the pressure sensor is set to 10 kg, Pr.10.49=0 and Pr.10.12=10.0% (that is, deviation=1 kg), and if
the set point=3 kg and feedback < 2 kg, then the AC motor drive follows the setting for Pr.10.20.