Allen-Bradley 1756OBV8S ControlLogix 8-Point Safety Output Module

Product overview

The Allen-Bradley 1756-OBV8S is a ControlLogix DC (18…32V) safety bipolar/sourcing output module for the 1756 chassis. It is a safety module with eight outputs that can be used bipolar or sourcing for 24V DC loads, with up to 1 A per channel and per-point short circuit, overload, no-load and overtemperature diagnostics. Rockwell rates it for use up to Cat. 4 / PLe to EN ISO 13849-1 and SIL 3 to IEC 61508, with a safety reaction time of 4.5 ms. It draws 280 mA at 5.1V DC from the backplane. Field wiring goes through a 1756-TBNHS or 1756-TBSHS (safety RTB) removable terminal block, which is ordered separately. ControlLogix I/O modules can sit in any slot of a local ControlLogix chassis or in a remote chassis linked over EtherNet/IP or ControlNet, and their input data and output status can be shared by more than one controller.