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I-MAT_Ed6 - Operating Instructions
For detailed program settings see the following
configuration sections.
9.3.1. Proportional pressure mode with single
transducer (differential or absolute)
This configuration uses a feedback given by a
pressure transducer (connected as shown in
section 6.7).
Parameters to programm or check (recommended
sequence):
Par.
Description
Suggested value
AP01
Maximum pump pressure
based on pump type
AP02
Primary transducer supply
data sheet
transducer
AP03
Primary transducer
measuring unit
1 [bar]
AP04
Primary transducer
minimum value
data sheet
transducer
AP05
Primary transducer
maximum value
data sheet
transducer
UP02
Nominal pump current
see motor plate
UP03
Nominal pump frequency
see motor plate
UP05
Operating mode
PP
UP06
Primary set-point
on demand [bar]
PP01
Percentage of the pressure
with zero flow
50 [%]
9.3.2.
Proportional pressure mode with 2
pressure transducers (differential mode).
If it is required to use a differential pressure
feedback, between delivery and suction of the pump
by using 2 transducers it’s necessary to connect
the first transducer and the second transducer as
shown in section 6.7.
Parameters to programm or check (recommended
sequence):
Par.
Description
Suggested value
AP01
Maximum pump pressure
based on pump type
AP02
Primary transducer supply
data sheet
transducer
AP03
Primary transducer
measuring unit
1 [bar]
AP04
Primary transducer
minimum value
data sheet
transducer
AP05
Primary transducer
maximum value
data sheet
transducer
AP06
Secondary transducer
supply
data sheet
transducer
AP07
Secondary transducer
measuring unit
1 [bar]
AP08
Secondary transducer
minimum value
data sheet
transducer
AP09
Secondary transducer
maximum value
data sheet
transducer
AP10
Secondary transducer mode
DiFF
UP02
Nominal pump current
see motor plate
UP03
Nominal pump frequency
see motor plate
UP05
Operating mode
PP
UP06
Primary set-point
on demand [bar]
PP01
Percentage of the pressure
with zero flow
50 [%]
To allow the system to work properly, the
primary transducer (B1-B4 clamps) must be
always connected to the delivery pipe, and the
secondary transducer (B5-B8 clamps) must
be always connected to the suction pipe.
9.3.3. Enabling stop at minimum frequency.
The proportional pressure mode provides that
the pump never stops. If it is required to stop the
pump when it’s working at the minimum operating
frequency (parameter SA03) it’s necessary change
the value of the parameter AP16 from “Off” to “FM”.
The system will restart when the difference between
the set-point pressure and system pressure
becomes lower than the value of parameter PP08.
9.4. Constant temperature operating mode.
Constant temperature operating mode keeps
constant the temperature at a point in the system.
In this operating mode the frequency converter
keeps constant the temperature.
For this operating mode must be defined the type of
system where the frequency converter will operate:
-
Heating systems (HEAt)
: in these systems
an increase of the pump frequency will
correspond to an increase of the temperature
of the transducer.
-
Cooling systems (Cool)
: in these systems
an increase of the pump frequency will
correspond a decrease of the temperature of
the transducer.
It is possible to have different configurations of this
operating mode related with the different types and
number of transducers installed:
-
Constant temperature with 1 temperature
transducer (absolute or differential
transducer).
-
Constant pressure with 2 temperature
transducers in differential mode.
For detailed program settings see the followings
configuration sections.
9.4.1. Constant temperature mode with single
transducer (absolute or differential
transducer).
This configuration uses a feedback given by a
pressure transducer (connected as shown in
section 6.7).
Parameters to programm or check (recommended
sequence):
Par.
Description
Suggested value
AP02
Primary transducer supply
data sheet
transducer
AP03
Primary transducer
measuring unit
4 [°C]
AP04
Primary transducer
minimum value
data sheet
transducer
AP05
Primary transducer
maximum value
data sheet
transducer
UP02
Nominal pump current
see motor plate
UP03
Nominal pump frequency
see motor plate
UP05
Operating mode
tC
UP06
Primary set-point
secondo richiesta [°C]
tC01
System type
HEAt/Cool
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