E6580772③
<Specifications of transmission>
Use
Network
Item | |
Number of transmission words | Max. 256W |
Transmission distance | Max. 2Km |
Valid transmission speed | 100ms/256W |
Number of connected station | Max. 256 stations (when 1W/1 unit) |
Inverter side
Item | Specification |
Structure of transmission path | |
Signal transmission method | |
Access method | Poling & selecting method |
Coding method | Base band, NRZ, Positive logic |
Checking method | CRC check |
Communication standard | Complies to EIA RS485. |
Data signal speed | 750kbps (high speed mode) |
Number of transmission words | Max. 12W per one inverter (6W input, 6W output) |
Processing time (note) | Max. 10ms (when only for scan transmission) |
Communication service | Scan transmission, message transmission |
Applicable model | Following functions of master station are possible. |
| z Function for selecting scan/message transmission |
| z Intermittent entering/secession function |
| z Function for selecting input data status at time of error |
| z MS monitoring function |
(Note) Processing time means a cycle that the inverter gets access to the data and not including a transmission time, etc.
Transmission cable specification
Item |
| Specification |
|
Transmission | Shielded twisted pair cable |
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cable |
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Connecting | Connect SL1(L1), SL2(L2) and SG respectively. |
| |
method | Use twisted pair cable for SL1 and SL2. |
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| (Note) Connect terminal resistors (both ends) to the end of the transmission path. | ||
Transmission | Cable type | Cable length | Recommended manufacturer |
cable length | 500m or shorter |
| |
| 1.2mmφ (single core) |
|
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| 400m or shorter | Showa Electric Wire & Cable | |
| 0.75mm2 (stranded wire) |
| Co., Ltd. |
| 200m or shorter |
| |
| 0.5mm2 (stranded wire) |
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Use same type of cable in one system.
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