INVT Goodrive350 Series Operation Manual page 317

Goodrive350 series high-performance multifunction VFD
120Ω
1 #
A+
B-
Master
Shielded twisted pair
RS232-RS485
Converter
Max. length of the
GND
cable: 15 m
PC
Figure 9-4 Practical application diagram of chrysanthemum connection
Figure 9-5 shows the start connection diagram. When this connection mode is adopted, the two
devices that are farthest away from each other on the line must be connected with a terminal resistor
(in Figure 9-5, the two devices are devices 1# and 15#).
Use shielded cable, if possible, in multi-device connection. The baud rates, data bit check settings,
and other basic parameters of all the devices on the RS485 line must be set consistently, and
2 #
Figure 9-2 On-site chrysanthemum connection diagram
A+ B-
1#
Figure 9-3 Simplified chrysanthemum connection diagram
485 +
485-
Earth
INVT
VFD
Address 1
1#
32#
Figure 9-5 Star connection
3 # 4 #
2# 3#
485+
485 -
Earth
INVT
VFD
Address 2
15#
-308-
Communication
120Ω
32 #
31#
120Ω
485 +
Terminal resistor
485-
Earth
INVT
VFD
Address N