Larsen & Toubro C*2000 Series User Manual page 182

2）shown as below, connect I/O PCB to remote keypad by connection cable。
·
Do not use the remote cable other than standard L&T'. Otherwise, malfunction may
occur due to noise input or voltage drop in the keypad.
·
Check for disconnection of the communication cable and/or poor cable connection if
"----" is displayed on the 7-segment display of the Remote keypad.
Cx2000 AC Drive
Chapter 13 Product specifications and options
Attention
13-11