1756-OB32K

General Specifications

• Product type designation: Digital Output Module
• Model: 1756-OB32K
• Description: 32-point digital output module, 12/24V DC source, 16 points/group
• Voltage category: 12/24V DC source
• Operating voltage range: 10…31.2V DC

Output Specifications

• Number of outputs: 32 (16 points/group)
• Off-state leakage current per point, max: 0.5 mA
• On-state voltage drop, max: 200 mV DC @ 0.5 A
• Current per point, max: 0.5 A @ 50 °C (linear derating), 0.35 A @ 60 °C
• Current per module, max: 16 A @ 50 °C (linear derating), 10 A @ 60 °C
• Surge current per point, max: 1 A for 10 ms, repeatable every 2 s @ 60 °C
• Load current, min: 3 mA per point

Output Delay Time

• Off to On: 60 µs nominal / 1 ms max
• On to Off: 200 µs nominal / 1 ms max

Power and Dissipation

• Current draw @ 5.1V: 300 mA
• Current draw @ 24V: 2 mA
• Total backplane power: 1.58 W
• Power dissipation, max: 4.8 W @ 60 °C
• Thermal dissipation: 16.37 BTU/hr

Features and Diagnostics

• Scheduled outputs: Synchronization within 16.7 s max, reference to 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

• Isolation voltage: 250V continuous (basic insulation type, outputs to backplane); 125V continuous (basic insulation type, outputs group to group)
• No isolation between individual outputs

Configuration

• Module keying: Electronic, software configurable

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