UR-6HH

The digital I/O module may be in different locations depending on the universal relay type (B30, C30, T60, etc.) and depending on how many digital I/O modules are incorporated within the specific relay. The B30 bus differential system universal relay provides a good example in the B30 Multilin catalogue. This manual uses the following part number as an example on page 275: B30-H00-HCL-F8H-H6H-L8H-N6A-S8H-U6H. Within this part number, one can notice three different digital I/O modules, which can be recognized by a two digit code such as the 6A, 6H, or 6H digital I/O module codes within this part number. The location of these digital I/O modules within the universal relay as a whole will depend on the specific universal relay (B30 in this case) and will depend on which location in the model number that each digital I/O order option falls (ex. a 6H digital I/O module is found in the –H** location and in the –U** location. The corresponding diagram shows that the order for this specific B30 relay is a power supply followed by a CPU, CT module, I/O module, etc.