Manufacturer: Rockwell Automation
Brand: Alan Bradley
Part number/Catalog number: 1756-OB16IS type
Series: ControlLogix
Module type: ControlLogix I/O
Output: 16 isolated, 8 scheduled
Voltage category: 12/24 VDC irrigation current/power supply
Allen-Bradley's 1756-OB16IS ControLogix output module is an output module located in the slot of the 1756 chassis, which has 16 separate pump/pull out outputs, eight of which are being scheduled. It has a 2A (DC-13SQ) contact rating and 0-30V operating voltage. It has a signal delay time of 1ms OFF to ON and 2ms ON to OFF, consuming 350mA at 5.1V DC and 2.5mA at 24V DC backplane, for a total backplane power consumption of 1.8W. The module has a maximum power consumption of 3.6W at 60 °C and a heat dissipation of 12.28 BTU/hr. The maximum voltage loss in the ON state is 1.2V DC (2A), and the leakage current at each point is 0.5mA. Each point has a nominal current of 1A/2A at 30/60 0C, the module has a maximum current of 8A/4A at 30/60 0C, the module has a 4A surge current lasting 10ms, each output point repeats every 2 seconds, and the minimum current load at each point is 1mA.
It synchronizes eight timing outputs in 16.7 seconds of Coordinated System Time (CST) and has a hold last state, on or OFF failure state, where OFF is the default state. It has 250V isolation between output to backplane and output to output, with basic type insulation, and is routinely tested at 1350V AC for 2 seconds. It is designated to the T4A (North America) and IEC T4 temperature specifications and comes with an open housing. It has a maximum ambient temperature of 60 °C (140 °F) and has been tested to operate under specified performance standards with an operating vibration of 2G and a shock of 30G.
