Nastec MIDA 207 - Differential Pressure Control Parameters; Alarms; Alarm Identification and Solutions

Menu Parameter Value
Control parameters Compensation This parameter is set other than 0 if you intend to operate a proportional differential
pressure control. Additional energy savings may be achieved through this type of
control.
The pressure difference that you want to keep constant at Max motor frequency is
given by the sum of parameters Set value + Compensation.
The pressure difference that you want to keep constant at Min motor frequency
corresponds to Set value .
The pressure set then varies proportionally between Min motor frequency and Max
motor frequency.
50Hz
Q
∆p
∆p
set
1
2
3
4
40Hz
35Hz
1: Compensation; 2: System curve; 3: Proportional differential pressure; 4: Constant
differential pressure
Control parameters Frequency min control Same as Min motor frequency
Control parameters Stop delay 99 s
Control parameters Start delay AUX In twin circulation systems (two pumps), each controlled by an inverter in COMBO
mode, this parameter should be set to 99 s in order to activate only one pump at a
time while ensuring the alternation of the same.
13. Alarms
WARNING
Immediate remedies must be implemented in case of alarms to safeguard the integrity of the device
itself and of the system in which it is installed.
Alarm Description Possible solutions
LINE<->MOT INV. Reverse the connection of the power
cable and motor cable.
• Correct the connection of the power and motor cables.
MIDA
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