Danfoss VLT Refrigeration Drive FC 103 Programming Manual page 156

Parameter Description
22-50 End of Curve Function
Option:
3 3
[0] Off
*
[1] Warning
[2] Alarm
[3] Man.
Reset
Alarm
[4] Stop and
Trip
22-51 End of Curve Delay
Range:
10 s [0 -
*
600 s]
154
VLT
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.
End-of-curve monitoring is not active.
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.
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.
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.
Function:
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 parameter 22-50 End of Curve
Danfoss A/S © 05/2016 All rights reserved.
®
Refrigeration Drive FC 103
22-51 End of Curve Delay
Range:
3.18.6 22-6* Broken Belt Detection
The broken-belt detection can be used in both closed-loop
and open-loop systems for pumps, fans, and compressors.
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 (parameter 22-60 Broken
Belt Function) is performed.
22-60 Broken Belt Function
Selects the action to be performed if the broken-belt condition is
detected.
Option:
[0] Off
*
[1] Warning The frequency converter continues to run, but
[2] Trip
22-61 Broken Belt Torque
Range:
10 % [0 - 100 %] Sets the broken-belt torque as a percentage
*
Function:
Function is activated. If the condition disappears
before the timer expires, the timer is reset.
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.
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.
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.
Function:
of the rated motor torque.
MG16H202