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en – Original instructions
LED bar
On
First LED flashing
Off
6.3.4 COM (communication)
Condition 1
The communication bus protocol is the Modbus RTU protocol; the P50 parameter is set to the
No optional communication module is used.
LED
Off
Green steady
Green flashing
From green steady to off
From green steady to
flashing
Condition 2
The communication bus protocol is the BACnet MS/TP protocol; the P50 parameter is set to
No optional communication module is used.
LED
Off
On steady
Condition 3
The optional communication module is being used.
LED
Off
Flashing
6.3.5 Unit of measurement
LED on
10xRPM
BAR
PSI
28
Status
Motor in operation; the speed corresponds to the percentage step represented by
the LEDs ON in the bar (e.g.: 3 LEDs ON = speed 30%)
Motor in operation; the speed is lower than the absolute minimum, P27
Motor stopped
Modbus value
Status
The unit cannot detect any valid Modbus messages on the terminals provided for the
communication bus
The unit has detected a communication bus on the provided terminals and has
recognised the correct addressing
The unit has detected a communication bus on the provided terminals and has not
been addressed correctly
The unit has not detected a valid Modbus RTU message for at least 5 seconds
The unit has not been addressed correctly for at least 5 seconds
the BACnet value
Status
The unit has received no valid requests from other BACnet MS/TP devices for at least
5 seconds
The unit is exchanging information with another BACnet MS/TP device
Status
RS485 or wireless connection faulty or missing
The unit is exchanging information with the communication module
Measurement active
Impeller rotation speed
Hydraulic head
Notes
The display shows the speed in 10xRPM
The display shows the value of the head in bar
The display shows the value of the head in psi
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