DAB PWM II 230 D 4.7 Instrucciones De Instalación Y Mantenimiento página 73


the contacts that perform the functions F1, F3, F4 may be connected either with independent contacts for
each inverter, or with only one contact connected in parallel on all the inverters (the function is activated only
on the inverter at which the command arrives).
The parameters for setting the inputs I1, I2, I3, I4 are part of the sensitive parameters, so setting one of these on any
inverter means that they are automatically aligned on all the inverters. As the setting of the inputs not only selects the
function, but also the type of polarity of the contact, the function associated with the same type of contact will perforce
be found on all the inverters. For the above reason, when using independent contacts for each inverter (as is possible
for the functions F1, F3, F4), these must all have the same logic for the various inputs with the same name; that is, for
the same input, either normally open contacts are used for all the inverters or normally closed ones.
4.3 Multi inverter operating parameters
The parameters displayed on the menu, in a multi-inverter configuration, can be classed as follows:

Read-only parameters

Local parameters

Multi inverter system configuration parameters in turn divided as
Sensitive parameters
o
Parameters with optional alignment
o
4.3.1 Parameters related to multi inverter systems
4.3.1.1 Local parameters
These are parameters that can differ from one inverter to another and in some cases actually need to be different. For
these parameters, automatic alignment of inverter configuration is not admitted. In the case of manual assignment of
addresses, these must all be different.
List of local parameters for inverters:
 CT Contrast
 FP Test frequency in manual mode
 RT Direction of rotation
 AD Address
 IC Reserve configuration
 RF Fault and warning reset
4.3.1.2 Sensitive parameters
These are parameters that must be aligned on the entire series for control purposes.
List of sensitive parameters:
 SP Setpoint pressure
 P1 Input 1 auxiliary pressure
 P2 Input 2 auxiliary pressure
 P3 Input 3 auxiliary pressure
 SX Maximum setpoint
 FN Nominal frequency
 RP Pressure drop for restart
 ET Exchange time
 AC Acceleration
 NA Number of active inverters
 NC Number of simultaneous inverters
 CF Carrier frequency
 TB Dry run time
Automatic alignment of sensitive parameters
When a multi inverter system is detected, the unit checks for consistency of the set parameters. If the sensitive
parameters are not aligned on all inverters, the display of each inverter shows a message requesting whether to
transfer the configuration of the specific inverter to the entire system. On acceptance, the sensitive parameters on the
inverter where confirmation is given are distributed to all other inverters in the series.
If there are configurations incompatible with the system, the configuration cannot be aligned from these inverters.
During normal operation, modification of a sensitive parameter on an inverter will cause automatic alignment of the
parameter on all other inverters without any request for confirmation.
Automatic alignment of sensitive parameters has no effect on all other types of parameter .
ENGLISH
 T1 Shutdown time after low pressure signal
 T2 Shutdown time
 GI Integral gain
 GP Proportional gain
 FL Minimum Frequency
 I1 Input 1 setting
 I2 Input 2 setting
 I3 Input 3 setting
 OD Type of system
 PR Remote pressure sensor
 AY Anti cycling
 PW Password Settings
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