Installation; Operation - Larsen & Toubro C*2000 Series User Manual

Chapter 11 Communication

11.3 Installation

1) Connecting the communication line
Connect the RS-485 communication line to the inverter's (S+), (S-) terminals of the control terminals
Check the connection and turn ON the inverter.
If the communication line is connected correctly set the communication-related parameters as the
following:
Relevant functions:
drv [Drive mode]
Frq [Freq. mode]
I 60 [Inverter Number]
I 61 [Baud-rate]
I 62 [Lost Mode]
I 63 [Wait Time for Command Lost]: 1.0 sec
I 59 [Comm. Prot]: 0 – (Modbus-RTU)
2) Computer and inverter connection
* The number of inverter to be connected is up to 16 pcs.
* The specification of length of communication line is max. 1200m. To ensure stable communication, li
mit the length below 700m.

11.4 Operation

11.4 operation
1) Operation steps
Check whether the computer and the inverter are connected correctly.
Turn ON the inverter. But do not connect the load until stable communication between the computer
and the inverter is verified.
Start the operating program for the inverter from the computer (Operate the inverter using the
operating program for the inverter.
Refer to "Troubleshooting" if the communication is not operating normally.
*User program or the "DriveConnect" program supplied from LT Industrial Systems can be used as
11-2
: 3 (Communication run)
: 7 (Communication run)
: 1~250 (Do not repeat, if more than 1 inverters are connected)
: 3 (9,600 bps as Factory default)
: 0 - (continue the frequency run before lost)
System Configuration
Cx2000 AC Drive