ABB Ability 800xA Series User Manual page 11

Safety Summary
SPECIFIC
CAUTIONS
2PAA114135-610
Do not combine different module types in redundant pairs, i.e. do
not combine a Linking Device of type LD 810HSE Ex with other types
such as LD 800HSE or LD 800HSE Ex.
When exchanging an LD 810HSE Ex, make sure not to permute the
H1 terminal blocks. See page
See page 48.
47.
11