Specifications

Note if wording in Modbus box is "NO REPLY FROM

NODE". Check polarity connection of RS485 link at M550

and PC. Check that M550 has auxiliary power by checking

Red LED on front of M550. If LED continually

illuminated power supply o.k. If LED illuminated &

flashing every 10 seconds, power supply ok M550

communicating ok. If LED flashes every second there is no

measuring input voltage signal.

2.9 Displaying parameters being measured.

Once M550 is communicating with your PC you can now

monitor different readings.

ACTION : None

COMMENTS : The 6 boxes

show line to line voltage and

line to neutral voltage for

each phase. Note if unit is 3

phase 3 wire M550-CT4

V1,V2,V3 are the same as

VL1-2, VL2-L3, VL3-1.

ACTION : Click on

button.

COMMENTS : The next six

parameters being monitored

are displayed. e.g I1,I2,I3,

WSum, VA Sum, VAR Sum.

M550MAN.PM5 01/08/101, 12:489