22-50 End of Curve Function
Option:
Function:
NOTICE
Automatic restart resets the alarm and
restarts the system.
NOTICE
Do not set
parameter 14-20 Reset Mode
,
to
[13] Infinite auto reset
, when
parameter 22-50 End of Curve Function
is
set to
[2] Alarm
. Doing so causes the
frequency converter to continuously cycle
between running and stopping when an
end-of-curve condition is detected.
NOTICE
If the frequency converter is equipped
with a constant speed bypass with an
automatic bypass function that starts the
bypass if the frequency converter
experiences a persistent alarm condition,
be sure to disable the automatic bypass
function, if
[2] Alarm
or
[3] Man. Reset
Alarm
is selected as the end-of-curve
function.
[0]
*
Off
End-of-curve monitoring is not active.
[1]
Warning
The frequency converter continues to run, but
activates an end-of-curve warning
(warning 94,
End of curve)
. A frequency converter digital
output or a serial communication bus can
communicate a warning to other equipment.
[2]
Trip
The frequency converter stops running and
activates an end-of-curve alarm
(alarm 94, End of
curve)
. A frequency converter digital output or a
serial communication bus can communicate an
alarm to other equipment.
[3]
Manual
Reset Trip
The frequency converter stops running and
activates an end-of-curve alarm
(alarm 94, End of
curve)
. A frequency converter digital output or a
fieldbus can communicate an alarm to other
equipment.
[4]
Stop and
Trip
22-51 End of Curve Delay
Range:
Function:
10 s
*
[0 -
600 s]
When an end-of-curve condition is detected, a
timer is activated. When the time set in this
parameter expires, and the end-of-curve
condition is steady during the entire period, the
function set in
22-51 End of Curve Delay
Range:
Function:
is activated. If the condition disappears
before the timer expires, the timer is reset.
3.19.6 22-6* Broken Belt Detection
The broken-belt detection can be used in both closed-loop
systems and open-loop systems for pumps and fans. If the
estimated motor torque is below the broken belt torque
value (
parameter 22-61 Broken Belt Torque
) and the
frequency converter output frequency is above or equal to
15 Hz, the broken-belt function (
) is performed.
22-60 Broken Belt Function
Selects the action to be performed if the broken-belt condition is
detected.
Option:
Function:
NOTICE
Do not set
parameter 14-20 Reset Mode
to
[13] Infinite auto reset
, when
parameter 22-60 Broken Belt Function
is
set to
[2] Trip
. Doing so causes the
frequency converter to continuously
cycle between running and stopping
when a broken-belt 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 bypass’s
automatic bypass function if
[2] Alarm
or
[3] Man. Reset Alarm
is selected as
the broken-belt function.
[0]
*
Off
[1]
Warning
The frequency converter continues to run, but
activates a broken-belt warning
(warning 95,
Broken belt)
. A frequency converter digital
output or a serial communication bus can
communicate a warning to other equipment.
[2]
Trip
The frequency converter stops running and
activates a broken-belt alarm
(alarm 95, Broken
belt)
. A frequency converter digital output or a
serial communication bus can communicate
an alarm to other equipment.
[3]
Stop and
Trip
Parameter Description
VLT
®
AQUA Drive FC 202
186
Danfoss A/S © 05/2018 All rights reserved.
MG20OB02
3
3
Содержание VLT AQUA Drive FC 202
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