Special Functions - Lowara ResiBoost MMW Manual De Instalación, Funcionamiento Y Mantenimiento

Table 20: Models MMA and MTA
Parame- Descrip- Range
ter tion
Pr Propor- 2 to 100
tional co-
efficient
of the
PID reg-
ulator (*)
ACCEL- Acceler- 2 to 15
ER. ation
time.
Minimum
time re-
quired
for the
frequen-
cy of the
motor to
go from
minimum
to maxi-
mum fre-
quency.
DECEL- Deceler- 2 to 15
ER. ation
time.
Minimum
time re-
quired
for the
frequen-
cy of the
motor to
go from
minimum
to maxi-
mum fre-
quency.
FREQ.S Selection 4 / 8
W. of the
switching
frequen-
cy of the
power
mod-
ule.**
DE- Select NO/YES -
FAULT YES to
PAR set the
default
values
RESET Select NO/YES -
CONT. YES to
reset the
operation
counters
and the
alarm
log.
SET Set the 0.5 to 10
PRESS required
0.0 to 16
Unit of Default
meas-
urement
- 19
Hz/sec 10
Hz/sec 10
kHz 8
NO
NO
bar 2.5
Parame- Descrip- Range
ter tion
pressure (in rela-
value of tion to
the sys- the full
tem (set scale of
point) the sen-
sor)
MIN.PRE Pressure 0.0 to
SS value of (SET
the sys- PRESS
tem be- -0.4)
low
0.0 =
which
Disabled
the A4
"mini-
mum
pres-
sure"
alarm is
trig-
gered.
When
the alarm
is trig-
gered,
the pump
stops
and the
ART
function
is ena-
bled.
See Spe-
cial func-
tions.
Trigger-
ing of the
alarm is
delayed
by the
length of
time set
in the
MP DE-
LAY pa-
rameter.
(*) these values depend on the type of installation
and are compatible with all the various types of sys-
tem.
(**) The noise level of the motor can be reduced us-
ing a frequency of 8 kHz. Increasing the switching
frequency reduces the capacity of the converter. It is
advisable to use a frequency of 4 kHz when the mo-
tor cable is long, in order to minimize the capacitive
currents in the cable.
WARNING:
Editing the parameters can cause the
converter to malfunction. Contact the as-
sistance service when modifications are
required.

5.4 Special functions

en - Original instructions
Unit of Default
meas-
urement
bar 0.0
37