Danfoss iC2, Инструкция по применению

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Table 22: Cable Specifications
Cable Shielded twisted pair (STP)
Impedance [Ω] 120
Cable length [m (ft)] Maximum 1200 (3937) (including drop lines).
Maximum 500 (1640) station-to-station.
6.1.2
Connecting the Drive to the RS485 Network
1.
Connect signal wires to terminal 68 (P+) and terminal 69 (N-) on the main control board of the drive.
61 68 69
N P C
O
M
M
. G
N
D
e3
0b
b
79
5.
10
Figure 52: Network Connection
2.
Connect the cable shield to the cable clamps.
NOTICE
To reduce noise between conductors, use shielded, twisted-pair cables.
6.1.3
Hardware Setup
To terminate the RS485 bus, use the terminator switch on the main control board of the drive. The factory setting for the switch is OFF.
e3
0b
v1
12
.1
0
1
2
1
2
O
N
Figure 53: Terminator Switch Factory Setting
1
RS485 termination switch (ON=RS485 terminated,
OFF=Open)
2
RS485 terminals
6.1.4
Parameter Settings for RS485 Communication
Two communication protocols are internal to the frequency converter.
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Danfoss FC
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Application Guide | iC2-Micro Frequency Converters