Service manual

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9 Fitting parts
9.1 Communication subassembly
9.1.1 Long-distance operation key board
Maximum electric distance from local keypad to inverter is 2m.
RS485 communication mode is adopted between inverter and long-distance
keypad，only a four-core cable is needed between them and maximum electric
distance can reach 1000m.They communicate with each other in main-auxiliary
mode, namely take long-distance keypad as main device and inverter as auxiliary
one. Connecting wire end is fixed by common screw which is easy to maintain.
This series of inverter support usage of local keypad and long-distance keypad
at the same time，no priority order，both can operate the inverter synchronously.
Following function can be realized by long-distance keypad:
(1) Can control run, stop, jog, failure restoration, changing set frequency
modifying function parameter and run direction of auxiliary device.
(2)Can identify auxiliary device type and monitor run frequency, set
frequencyoutput voltage, output current, analog closed loop feedback,
analog closed loop setting and exterior counting value of auxiliary device.
EN-KB8
Fig.9-1 long-distance keypad
9.1.2 Communication cable
(1) Long-distance keypad communication cable
Type: EN-LC0030 (3.0m)
Used for connecting between long-distance keypad and inverter.
Remark: 1m, 2m, 3m, 5m, 10m, 15m are standard deployment for our company’s
inverter，it’s needed to subscribe for the cable if it exceeds 15m.
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