Output Phase Loss Protection; External Trip Signal - Larsen & Toubro C*2000 Series User Manual

Chapter 10 Protective Functions

10.4 Output phase loss protection

Group Code
Function
H19
group 2
 Set H19 value to 3 in the function group 2.
 Output phase loss: Inverter output is shut off at the event of more than one
phase loss among 3 phase output (U, V and W).
Input phase loss: Inverter output is blocked at the event of more than one p

hase loss among R, S and T.
Set H33 [Motor rated current] correctly. If the actual motor rated current and the
value of H33 are different, output phase loss protection function could not be
activated.
H19 Input/Output
phase loss
protection
select

10.5 External trip signal

Group Code Parameter
I/O Group
I17
~
I20
I21
Select a terminal among P1 thru P5 to output external trip signal.

 Set I20 to 18 and I21 to 19 to define P4 and P5 as External A contact and
B contact.
10-5
Parameter
Input/Output phase loss
protection select
Warning
Input loss phase
protection
Bit 1
0
1
2
3
Multi-function input terminal
P1 define
~
Multi-function input terminal
P4 define
Multi-function input terminal
P5 define
Set Value Range
1 0 ~ 3
Output loss phase
protection
Bit 0


Set Value Range
0 ~ 27
18
19
Initial Unit
3


Initial Unit
0
3
4
Cx2000 AC Drive