ABB RELION 670 Series Technical Manual page 1282

Section 22
IED hardware
Table 996: Designations for 3/4 x 19" casing with 1 TRM slot
1MRK002801-AC-3-670-1.2-PG V.3 EN
1MRK002801-AC-3-670-1.2-PG V3 EN-US
1276
Module Rear Positions
PSM X11
BIM, BOM, SOM, IOM or X31 and X32 etc. to
MIM X101 and X102
SLM X301:A, B, C, D
LDCM, IRIG-B or RS485 X302
LDCM or RS485 X303
OEM X311:A, B, C, D
LDCM, RS485 or GTM X312, X313
TRM X401
1MRK 502 066-UUS B
SEMOD111882-4 v6
Technical manual