Danfoss VLT DriveMotor FCP 106 Programming Manual page 90

Parameters
22-44 Wake-Up Ref./FB Diff
Range:
10 [0 -
% 100 %]
*
4 4
22-45 Setpoint Boost
Range:
0 % [-100 - 100 %]
*
0.0% [-100.0-100.0%]
*
22-46 Maximum Boost Time
Range:
60 [0 -
s 600 s]
*
22-47 Sleep Speed [Hz]
Range:
0 [ 0 - 400.0 ] Set the speed below which the frequency
*
4.15.3 22-6* Broken Belt Detection
Use Broken Belt Detection in both closed and open loop
systems for pumps and fans. If the estimated motor torque
(current) is below the broken belt torque (current) value
(parameter 22-61 Broken Belt Torque) and the frequency
converter output frequency is above or equal to 15 Hz,
parameter 22-60 Broken Belt Function is performed.
88
Function:
Only to be used if parameter 1-00 Configuration
Mode is set for Closed Loop and the integrated
PI controller is used for controlling the pressure.
Set the pressure drop allowed in percentage of
set point for the pressure (Pset) before
cancelling the Sleep Mode.
Function:
Only to be used if
parameter 1-00 Configuration Mode, is
set for Closed Loop and the integrated
PI controller is used. In systems with e.g.
constant pressure control, it is
advantageous to increase the system
pressure before the motor is stopped.
This extends the time in which the
motor is stopped and help to avoid
frequent start/stop.
Set the desired over pressure/
temperature in percentage of set point
for the pressure (P )/temperature
set
before entering the Sleep Mode.
If setting for 5%, the boost pressure is
P *1.05. The negative values can be
set
used for e.g. cooling tower control
where a negative change is needed.
Function:
Only to be used if parameter 1-00 Configuration
Mode is set for Closed Loop and the integrated PI
controller is used for controlling the pressure.
Set the maximum time for which boost mode is
allowed. If the set time is exceeded, Sleep Mode
will be entered, not waiting for the set boost
pressure to be reached.
Function:
converter goes into Sleep Mode.
®
VLT DriveMotor FCP 106 and FCM 106 Programming Guide
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
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
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
bypass's automatic bypass function, if [2] Trip is selected
as the Broken Belt Function.
22-61 Broken Belt Torque
Range:
10 %
*
22-62 Broken Belt Delay
Range:
10 s
*
s]
MG03N102 - Rev. 2013-12-02
Function:
activate a Broken Belt Warning [W95]. A
frequency converter digital output or a serial
communication bus can communicate a warning
to other equipment.
The frequency converter stops running and
activate a Broken Belt alarm [A 95]. A frequency
converter digital output or a serial communi-
cation bus can communicate an alarm to other
equipment.
Function:
[5 - 100 %] Sets the broken belt torque as a percentage
of the rated motor torque.
Function:
[0 - 600 Sets the time for which the Broken Belt
conditions must be active before carrying out
the action selected in parameter 22-60 Broken
Belt Function.