Operating Instructions - ABB IM300-I Operational Manual

2.2.8. Wiring Precautions
 The conductor cross section of the connecting wire to the device should meet the
following requirements: the cross section of current wires is not less than 2.5
mm , the cross section of voltage wires is not less than 1.0 mm
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 Communication lines must be shielded twisted pair, communication line RS485 +,
RS485- can not be reversed.
 The wires of power supply and voltage input must be connected with 2A fuse in
series..
 To reduce the impact of current at startup, it is recommended each power cord
does not exceed 40 devices.
 When the communication connection using the linear connection, respectively
access line should match 100 ~ 120Ω resistor is located between the beginning
and the ending of the communication cable at the RS485 + and RS485- terminals.
 Baud rate is 9600bps, the cable length <1200 meters.
 The maximum load of the analog outputs includes the line resistance. Be careful
when wiring.
3.

Operating Instructions

This chapter details IM300 man-machine interface, including how to read the
data, set parameters, and local operations.
Note: IM300 means depending on each particular model (see Appendix C. ordering), does
not have a corresponding function corresponding to the interface does not display.
AO+ AO- NC
24 25
R
L
u
analog outputs
fig. 2-2-6 DC
11
IM300 Intelligent Power Monitoring Instrument
NC
27
26
wiring diagram
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