Watlow Relay Interface Board - Manual (Page 6)

Relay Interface Board Installation Guide
2
System Requirements
Choose which of the controller’s digital inputs and outputs are needed. Refer to
Table 3 and 4
for connections for 24-module I/O boards or Table 5 for connections
for a 32-module I/O board. An 8-module I/O board contains the first eight modules
of the 24-module board, a 16-module board contains the first 16 modules of the 24-
module board, etc.
• 8, 16 and 24-module I/O boards are connected to J2 and J3 on the RIB.
• 32-module boards connect to J4 only.
The system safe and global alarm outputs are available via J2 and TB1 only. To con-
nect to all of the digital inputs and outputs, use two 24-module boards.
A 32-module board connected to J4 provides outputs for 32 heat-only loops or for 16
heat/cool loops.
MLS300 and CLS200 controllers have a 50-pin, SCSI-II, female connector for digi-
tal I/O. You will have to make or obtain from Watlow Anafaze a cable that connects
from SCSI to ribbon cable in order to use the RIB with these controllers.