Cascade Mode Programming - Calpeda I-MAT Serie Instrucciones De Uso

Set the parameter AP39 with the full-scale value of
the output signal.
10.7. Enabling remote set-point.
It's possible to modify the value of the set-point
GB
from a remote source instead from the keyboard.
For electrical connection see section 6.7 (secondary
transducer electrical connection).
Set parameter AP06, to defi ne the supply of the
signal, AP07 on the required measuring unit and
AP09 to the signal full-scale.
Change the value of parameter AP10 to "REM".
In this confi guration the frequency converter uses
the feedback from the primary transducer, but the
set-point value is acquired from the signal of the
secondary transducer.
10.8. Enabling periodical start system.
It's possible to enable a function which allows the
pump working whenever it is in stand-by for a long
time.
To enable this function it is necessary to change
parameter AP25 to the value, in hours, of the
stand-by time after it is required which the pump
starts, AP26 allows to set the working frequency
and parameter AP27 allows to set the working time
expressed in minutes.
To disable this function set parameter AP25 to
"OFF" i.e. "0" value.
10.9. Enabling the systems leakage control.
It's possible to enable a function that checks
the number of starts executed by the frequency
converter.
To enable this function change the value of
parameter AP28 to "On" and set the maximum
number of starts that could be done in 20 minutes
in the parameter AP29.
If the number of starts is more than the expected
the frequency converter will stop with the alarm
"Er12".
10.10. Enable motor heating system.
It's possible to enable a function that allows to
supply the motor even when the pump is stopped
or in stand-by.
Change the value of the parameter AP30 to "On"
and with parameter AP31 set the heating power
that must be provided to the motor.
10.11. Enabling Safe-start
Safe-start function prevent a peak of pressure in
the system pipework. Safe-start function operates
any time there is a supply disconnection of the
frequency converter.
To enable this function it is necessary to set
parameter AP49 to value "On".
At every disconnection of the supply voltage of the
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system, when the supply is restored, the frequency
converter will start at a defi ned frequency
(selectable through the parameter AP52) and it
will operate at this frequency for a time, defi ned in
the parameter AP53. After that time the system will
return to operate in normal mode. If this option is
active in the master pump the safe-start function
will work even in cascade mode.

11. Cascade mode programming

ON
Make sure that the cascade mode expansion
board are properly connected, otherwise
it will be not possible to use the cascade
modes.Boosting set with 2-6 variable speed
pumps
After the electrical connection (see section 7.4),
set parameter AP11 on the value UU for each
frequency converter, defi ne which frequency
converter will work on master mode and for this
frequency converter change the parameter AP12
from SLA (slave) to MAS (master).
For each other frequency converter defi ne the
address through the parameter AP13 ( SLA1,
SLA2, SLA3, SLA4, SLA5).
Boosting set with 1 variable speed pump and 1-5
fi xed speed pumps
After the electrical connection (see section 7.4), set
parameter AP11 on the frequency converter on the
value "UF".
11.1. Enabling twin-pump operation
This operating mode works only with 2 pumps and
works with the followings operating modes:
- Constant pressure mode
- Proportional pressure mode
- Constant temperature mode
- Constant fl ow rate mode
In this operating mode only one pump works and
the other one is for total reserve.
To enable twin-pump mode the parameter AP11
must be set to "dP", defi ne which frequency
converter works as master "MAS" and on this
converter change the parameter AP12 to "MAS".
Only on this frequency converter should be
connected all the transducers and signals.
11.2. Alternating pumps function
Alternating pumps function allows a more uniform
use of the pumps. This function is active by default
(parameter AP48 is set to "On") and it's possible
to change the alternating time, in minutes, through
parameter AP49.
I-MAT_Ed1.indd - Operating Instructions