22-46 Maximum Boost Time
Range: Function:
60
s
*
[0 -
600 s]
Only to be used if parameter 1-00 Conguration
Mode is set for [3] 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, the frequency
converter enters the sleep mode without waiting
for the set boost pressure to be reached.
22-47 Sleep Speed [Hz]
Range: Function:
0
*
[ 0 - 400.0 ] Set the speed below which the frequency
converter goes into sleep mode.
22-48 Sleep Delay Time
Range: Function:
0 s [0 - 3600 s] Set the delay time that the motor waits before
entering sleep mode when the condition to
entering sleep mode is met.
22-49 Wake-Up Delay Time
Range: Function:
0 s [0 - 3600 s] Set the delay time that the motor waits before
waking up from sleep mode when the
condition for wake-up is met.
3.15.5 22-6* Broken-belt Detection
Use broken-belt detection in both closed-loop systems 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.
22-60 Broken Belt Function
Selects the action to be performed if the broken-belt condition is
detected.
Option: Function:
[0]
*
O
[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.
NOTICE
Do not set parameter 14-20 Reset Mode, to [13] Innite
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 automatic bypass function is enabled, the bypass
starts when the frequency converter experiences a
persistent alarm condition. In this case, disable the
automatic bypass function if [2] Trip is selected as the
broken-belt function.
22-61 Broken Belt Torque
Range: Function:
10 %
*
[5 - 100 %] Set the broken-belt torque as a percentage
of the rated motor torque.
22-62 Broken Belt Delay
Range: Function:
10 s
*
[0 - 600
s]
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.
3.15.6 22-8* Flow Compensation
In certain applications, it is not possible for a pressure
transducer to be placed at a remote point in the system,
and it can only be placed close to the fan/pump outlet.
Flow compensation operates by adjusting the setpoint
according to the output frequency, which is almost propor-
tional to ow. Thus, it compensates for higher losses at
higher ow rates.
H
DESIGN
(required pressure) is the setpoint for closed-loop
(PI) operation of the frequency converter and is set as for
closed-loop operation without ow compensation.
Parameters TR150 and TR170
90 02/2017 All rights reserved. BAS-SVP16B-EN
3
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