GE Ecomagination AF-600 FP Programming Manual page 128

Parameter Description
AP-21 Low Power Detection
Option: Function:
[0] Disabled
*
[1] Enabled To set the parameters in parameter group AP-3#
for proper operation, carry out the low-power
detection commissioning.
AP-22 Low Speed Detection
Option: Function:
[0] Disabled
*
[1] Enabled Detects when the motor operates with a speed
as set in parameter F-18 Motor Speed Low Limit
[RPM] or parameter F-16 Motor Speed Low Limit
[Hz].
AP-23 No-Flow Function
Common actions for low-power detection and low-speed
detection (individual selections not possible).
Option: Function:
NOTICE
[0] Off
*
Do not set parameter H-04 Auto-Reset
(Times), to [13] Infinite auto reset, when
parameter AP-23 No-Flow Function is set
to [3] Alarm. Doing so causes the
frequency converter to continuously
cycle between running and stopping
when a no-flow condition is detected.
NOTICE
Disable the automatic bypass function
of the bypass if the frequency converter
is equipped with a constant-speed
bypass with an automatic bypass
function starting the bypass if the
frequency converter experiences a
persistent alarm condition, and [3] Alarm
is selected as the no-flow function.
The drive will not respond to a No Flow
condition.
[1] Sleep The frequency converter enters sleep mode
Mode and stops when a no-flow condition is
detected. See parameter group AP-4# for
programming options for sleep mode.
[2] Warning The frequency converter continues to run, but
activates a no-flow warning (warning 92,
NoFlow). A digital output or a serial communi-
cation bus can communicate a warning to
other equipment.
[3] Alarm The frequency converter stops running and
activates a no-flow alarm (alarm 92, NoFlow). A
frequency converter digital output or a serial
DET-620D
AF-600 FP™ Programming Guide
AP-23 No-Flow Function
Common actions for low-power detection and low-speed
detection (individual selections not possible).
Option:
AP-24 No-Flow Delay
Range:
10 s
*
AP-26 Dry Pump Function
Select the action for dry pump operation.
Option:
[0] Off
*
[1] Warning
03/2016 All rights reserved.
Function:
communication bus can communicate an
alarm to other equipment.
Function:
[1 - 600 s] Set the time that low power/low speed must
stay detected to activate signal for actions. If
detection disappears before the timer runs
out, the timer is reset.
Function:
NOTICE
To use dry-pump detection:
1. Enable low-power detection in
parameter AP-21 Low Power
Detection.
2. Commission low-power detection
using either parameter group
AP-3# No Flow Power Tuning, or
parameter AP-20 Low Power Auto
Set-up.
NOTICE
Do not set parameter H-04 Auto-Reset
(Times) to [13] Infinite auto reset, when
parameter AP-26 Dry Pump Function is set
to [2] Alarm. Doing so causes the
frequency converter to continuously cycle
between running and stopping when a
dry pump condition is detected.
NOTICE
For frequency converters with constant-
speed bypass
If an automatic bypass function starts the
bypass at persistent alarm conditions,
disable the automatic bypass function, if
[2] Alarm or [3] Man. Reset Alarm is
selected as the dry pump function.
The frequency converter continues to run, but
activates a dry-pump warning (warning 93, Dry
pump). A frequency converter digital output or a
serial communication bus can communicate a
warning to other equipment.
3 3
127