22-45 Setpoint Boost
Range: Function:
0 %* [-100 - 100 %] Only to be used if par.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 be-
fore the motor is stopped. This will extend 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 (Pset)/temperature before entering the Sleep Mode.
If setting for 5%, the boost pressure will be Pset*1.05. The negative val-
ues can be used for e.g. cooling tower control where a negative change
is needed.
22-46 Maximum Boost Time
Range: Function:
60 s* [0 - 600 s] Only to be used if par.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 will be allowed. If the set
time is exceeded, Sleep Mode will be entered, not waiting for the set
boost pressure to be reached.
22-6* Broken Belt Detection
The Broken Belt Detection can be used in both closed and open loop systems for pumps, fans and compressors.
If the estimated motor torque is below the broken belt torque value (par.22-61
Broken Belt Torque) and the
frequency converter output frequency is above or equal to 15 Hz, the broken belt function (par.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: Function:
[0] * Off
[1] Warning The drive will continue to run, but activate a Broken Belt Warning [W95].
A drive digital output or a serial communication bus can communicate a
warning to other equipment.
[2] Trip The drive will stop running and activate a Broken Belt alarm [A 95]. A
drive digital output or a serial communication bus can communicate an
alarm to other equipment.
NOTICE
Do not set par.14-20 Reset Mode, to [13] Infinite auto reset, when par.22-60 Broken Belt Function is set to [2] Trip.
Doing so will cause the drive to continuously cycle between running and stopping when a broken belt condition is
detected.
NOTICE
If the drive is equipped with a constant speed bypass with an automatic bypass function that starts the bypass if the
drive 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: Function:
10 %* [0 - 100 %] Sets the broken belt torque as a percentage of the rated motor torque.
Parameter Description
TR200 Programming Guide 219
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