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5
PM-22 PUMP MONITOR MANUAL
To check what failure occured, press the LAST FAILURE
button. The last failure will be shown for 3 s and then it
will be erased automatically.
LAST FAILURE
RAPID CYCLING
UNDERLOAD PROTECTION
The PM-22 protects the motor when a loss of suction is
detected. When this happens, the motor uses less
power and the PM-22 shuts down the motor after a 5 s
trip delay.
The underload setup is set at 65 % of the power
consumption during automatic calibration, but it can
also be adjusted manually.
In the unusual event that the system has a wide power
variation and it’s consumption goes below 65% there
will be a false triggering of the underload protection.
In this case underload should be adjusted manually to
a lower value in the setup menu .
OVERLOAD PROTECTION
The PM-22 protects the motor when an overload is
detected, when this happens the motor uses more
power and the PM-22 shuts down the motor after a trip
delay as shown in the graphic below.
100
125
150
175
200
225
250
275
5
10
15
20
25
OVERLOAD %
TRIP
DELA
Y
Sec.
OVER LOAD TRIP DELAY
The overload trip point is set to 125% of the power
consumption during automatic calibration, but it can
also be adjusted manually.
UNDER VOLTAGE PROTECTION
The PM-22 protects the motor if the voltage drops
from normal conditions. It shuts down the motor after
a 5 s trip delay. The under voltage protection is user-
adjustable.
To reset from this fault, the voltage has to increase 2%
above the under voltage value.
OVER VOLTAGE PROTECTION
The PM-22 protects the motor if the voltage is over
from normal conditions. It shuts down the motor after
a 5 s trip delay. The over voltage protection is user-
adjustable.
To reset from this fault, the voltage has to decrease 2%
above the over voltage value.
RAPID CYCLING PROTECTION
Pumps heat up if they are started very frequently. Such
heating could damage the pump even if an overload is
not present.
When the PM-22 detects that the pump starts more
than 4 times per minute, it will shutdown the pump to
prevent any damage.
PM-22 PUMP MONITOR MANUAL ENGLISH 2018
viernes, 4 de octubre de 2019 10:45:10 a. m.
