52 Program features
Note:
Fault D4B0 cannot be reset until selected DI in parameter
is low.
Dry run protection through minimum load current
The dry run protection through minimum load current (
=
) detects the dry run condition of the pump based on the
minimum load current value defined in the parameter
The drive trips on the fault
whenever the
• actual current of the motor is less than the dry run current limit set in
parameter
,
• actual speed of the motor is greater than the minimum speed set in
parameter
, and
• both the conditions exists for the time set in parameter
You can define the fault reset time with parameter
.
Settings
).
and
detected
detected
goes
OFF before
elapses.
elapses
is still ON and
warning
Drive
and
Pump
ON
Drive
ON
and
Pump
OFF
Scenario 1 - False alarm
Scenario 2 - Actual dry run
Summary of Contents for ACQ80
Page 1: ... ABB DRIVES FOR WATER ACQ80 standard program control Firmware manual ...
Page 2: ... Related documents are listed on page 13 ...
Page 4: ......
Page 10: ...10 Table of contents ...
Page 32: ...32 Startup control with I O and ID run ...
Page 34: ...34 Using the control panel ...
Page 74: ...74 Program features ...
Page 78: ...78 Control macros ...
Page 380: ...380 Fieldbus control through a fieldbus adapter ...
Page 384: ...384 Parameterization with Drive Composer ...
Page 388: ...388 Parameterization with Automation builder drive manager ...