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LED bar
Status
On
Motor in operation; the speed corresponds to the
percentage step represented by the LEDs ON in
the bar (for example, 3 LEDs ON = speed 30%)
First LED flashing
Motor in operation; the speed is lower than the
absolute minimum, P27
Off
Motor stopped
6.4.4 COM (communication)
Condition 1
• The communication bus protocol is the Modbus RTU protocol; the P50 parameter is set
to the Modbus value
• No optional communication module is used.
LED
Status
Off
The unit cannot detect any valid Modbus messages
on the terminals provided for the communication
bus
Green steady
The unit has detected a communication bus on the
provided terminals and has recognized the correct
addressing.
Green flashing
The unit has detected a communication bus on the
provided terminals and has not been addressed
correctly
From green steady to off
The unit has not detected a valid Modbus RTU
message for at least 5 seconds.
From green steady to flashing
The unit has not been addressed correctly for at
least 5 seconds.
Condition 2
• The communication bus protocol is the BACnet MS/TP protocol; the P50 parameter is set
to the BACnet value
• No optional communication module is used.
LED
Status
Off
The unit has received no valid requests from other
BACnet MS/TP devices for at least 5 seconds.
On steady
The unit is exchanging information with another
BACnet MS/TP device.
Condition 3
• A multi-pump control mode is selected (e.g. MSE or MSY)
• No optional communication module is used.
LED
Status
Off
The unit has received no valid requests from other
pumps through the multi-pump BUS for at least 5
seconds
On steady
The unit is exchanging information with another
pump through the multi-pump BUS.
Condition 4
The optional communication module is being used.
6 System Setup and Operation
Smart Pump Range INSTRUCTION MANUAL
27
Summary of Contents for GOULDS e-AB Series
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