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Technical specifications
ABB Control - AC 31
Page 3-5
1SBC 260400 R1001-b
06.99
2. CS 31 bus technical specifications
Type
RS 485 multipoint serial interface
Mode
Half-duplex
Number of connection points
1 single master
max. 31 slaves
Support
- Section
- Twists
- Resistance
- Impedance specification
- Capacity
- Shielding
- Line termination
Shielded twisted pair
0.22...0.8 mm²
> 10 per meter
≤
100
Ω
/ km
100 à 150
Ω
< 150 nF / km
Braiding
Resistance 120
Ω
, ¼ Watt, connected
to each extremity of the bus
Protocol
ABB CS 31 (master/slave)
or MODBUS slave
Transmission control
CRC
Maximum length
up to 500 m without amplifier
up to 2000 m with 3 amplifiers
(NCB or NCBR)
Bus redundancy
yes with NCBR
Isolation
yes by optocoupler
Refresh time
2 ms minimum
typically 12 ms with 31 CS 31 interfaces
Speed
187.5 kBauds
Summary of Contents for AC 31
Page 1: ...Technical Manual Advant Controller 31 40 50 Series 1SBC 260400 R 1001 b ...
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Page 45: ...Technical specifications Page 3 2 ABB Control AC 31 1SBC 260400 R1001 b 06 99 ...
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Page 85: ...Installation Page 4 2 ABB Control AC 31 1SBC 260400 R1001 b 06 99 ...
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Page 130: ...Programming ABB Control AC 31 Page 5 21 1SBC 260400 R1001 b 06 99 ...
Page 182: ...Communication ABB Control AC 31 Page 7 11 1SBC 260400 R1001 b 06 99 ...
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Page 218: ...AC 31 technical documentation ABB Control AC 31 Index Page 1 1SBC 260400 R1001 b 06 99 Index ...