Calpeda I-MAT Instructions Pour L'utilisation page 40

For detailed program settings see the following
configuration sections.
9.3.1. Proportional pressure mode with single
transducer (differential or absolute)
EN
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
AP01
Maximum pump pressure
AP02
Primary transducer supply
Primary transducer
AP03
measuring unit
Primary transducer
AP04
minimum value
Primary transducer
AP05
maximum value
UP02
Nominal pump current
UP03
Nominal pump frequency
UP05
Operating mode
UP06 Primary set-point
PP01 Percentage of the pressure
with zero flow
9.3.2. Proportional
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
AP01 Maximum pump pressure
AP02
Primary transducer supply
Primary transducer
AP03
measuring unit
Primary transducer
AP04
minimum value
Primary transducer
AP05
maximum value
Secondary transducer
AP06
supply
Secondary transducer
AP07
measuring unit
Secondary transducer
AP08
minimum value
Secondary transducer
AP09
maximum value
AP10
Secondary transducer mode
UP02
Nominal pump current
UP03
Nominal pump frequency
UP05
Operating mode
UP06
Primary set-point
PP01
Percentage of the pressure
with zero flow
Page 40 / 164
Suggested value
based on pump type
data sheet
transducer
1 [bar]
data sheet
transducer
data sheet
transducer
see motor plate
see motor plate
PP
on demand [bar]
50 [%]
pressure mode with
Suggested value
based on pump type
data sheet
transducer
1 [bar]
data sheet
transducer
data sheet
transducer
data sheet
transducer
1 [bar]
data sheet
transducer
data sheet
transducer
DiFF
see motor plate
see motor plate
PP
on demand [bar]
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
2
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
transducer).
- Constant pressure
transducers in differential mode.
For detailed program settings see the followings
configuration sections.
9.4.1. Constant temperature mode with single
transducer
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
AP02
Primary transducer supply
Primary transducer
AP03
measuring unit
Primary transducer
AP04
minimum value
Primary transducer
AP05
maximum value
UP02
Nominal pump current
UP03
Nominal pump frequency
UP05
Operating mode
UP06
Primary set-point
tC01 System type
I-MAT_Ed7 - Operating Instructions
(absolute or differential
with 2 temperature
(absolute or differential
Suggested value
data sheet
transducer
4 [°C]
data sheet
transducer
data sheet
transducer
see motor plate
see motor plate
tC
secondo richiesta [°C]
HEAt/Cool