ABB ACQ80, Руководство по прошивке

Страница: 63 / 390

Program features 63
AI supervision (parameters
12.03
…
12.05
)
The parameters select how the drive reacts when an analog input signal moves
out of the minimum and/or maximum limits specified for the input. This can be
due to broken I/O wiring or sensor.
Fan control (
95.200
)
Fan control prevents overheating and dust accumulation in the drive. The user
can set the fan to run continuously in maximum speed (Always On [1]) or can set
to run the fan in a controlled mode (Auto[0]), as per the load speed.
 Automatic fault resets
The default fault reset time can be set in parameter
79.61 Fault reset time
. When
the drive trips due to
• undervoltage fault,
• PV cell maximum voltage fault, or
• when actual speed decreases below the minimum motor speed defined in
the parameter
79.51 Pump minimum speed
,
the drive waits for the defined time and then resets the fault automatically.
WARNING! Before you activate the function, make sure that no dangerous
situations can occur.
The function resets the drive automatically and continues operation after a
fault.
Settings
Parameters
79.51 Pump minimum speed
,
79.61 Fault reset time
(page
231
).

Emergency stop
The emergency stop signal is connected to the input selected with parameter
21.05 Emergency stop source
. An emergency stop can also be generated through
fieldbus (parameter
06.01 Main control word
, bits 0…2).
The emergency stop mode is selected by parameter
21.04 Emergency stop mode
.
The following modes are available:
• Off1: Stop along the standard deceleration ramp defined for the particular
reference type in use
• Off2: Stop by coasting
• Off3: Stop by the emergency sto0p ramp defined by parameter
23.23
Emergency stop time
.