1756-OB32 | Allen Bradley Digital DC Output Module

Allen-Bradley 1756-OB32 Overview

• Outputs: 32 (16 points/group)
• Voltage category: 12/24V DC source
• Operating voltage range: 10 ... 31.2V DC
• Output delay time:
  Off to On: 60 s nom/1 ms max
  On to Off: 200 s nom/1 ms max
• Current draw @ 5.1V: 300 mA
• Current draw @ 24V: 2 mA
• Total backplane power: 1.58 W
• Power dissipation, max: 4.8 W @ 60ºC (140°F)
• Thermal dissipation: 16.37 BTU/hr
• Off-state leakage current per point, max: 0.5 mA per point
• On-state voltage drop, max: 
  0.5 A @ 50°C (122°F) linear derating
  0.35 A @ 60°C (140°F)
• Current per module, max:
  16 A @ 50°C (122°F) linear derating
  10 A @ 60°C (140°F)
• Surge current per point, max: 1 A for 10 ms per point, repeatable every 2 s @ 60°C (140°F)
• Load current, min: 3 mA per point
• Scheduled outputs: Synchronization within 16.7 s max, reference to the Coordinated System Time
• States in Fault mode per point: Hold last state, On or Off (Off is default)
• States in Program mode per point: Hold last state, On or Off (Off is default)
• Isolation voltage:
  250V (continuous), basic insulation type, outputs-to-backplane, and output group-to-group
  No isolation between individual group outputs
  Routine tested @ 1350V AC for 2 s
• Module keying: Electronic, software configurable
• Fusing: Not protected. A fused IFM can be used to protect outputs
• RTB keying: User-defined mechanical
• Slot width: 1
• Wire category: 1¹
• North American temperature code: T3C
• IEC temperature code: T3
• Enclosure type: None (open-style)