1756-OB16EK

Overview

• Product type designation: DC Digital Output Module
• Model: 1756-OB16EK
• Description: 16-point electronically fused digital output module, 12/24V DC source, 8 points/group
• Voltage category: 12/24V DC source
• Operating voltage range: 10…31.2V DC

Output Specifications

• Number of outputs: 16 (electronically fused, 8 points/group)
• Off-state leakage current per point, max: 1 mA
• On-state voltage drop, max: 400 mV DC @ 1 A
• Current per point, max: 1 A @ 60 °C
• Current per module, max: 8 A @ 60 °C
• Surge current per point, typical: 2 A for 10 ms, repeatable every 2 s @ 0 °C, 24V DC
• Load current, min: 3 mA per point

Output Delay Time

• Off to On: 70 µs nominal / 1 ms max
• On to Off: 360 µs nominal / 1 ms max

Power and Dissipation

• Current draw @ 5.1V: 250 mA
• Current draw @ 24V: 2 mA
• Total backplane power: 1.32 W
• Power dissipation, max: 4.1 W @ 60 °C
• Thermal dissipation: 13.98 BTU/hr

Protection and Diagnostics

• Fusing: Electronically fused per group

Features and Configuration

• 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)
• Module keying: Electronic, software configurable

Isolation

• Isolation voltage: 250V continuous (basic insulation type, outputs-to-backplane and output group-to-group)
• No isolation between individual outputs within a group

Physical Specifications

• Removable terminal blocks: 1756-TBNH, 1756-TBSH
• RTB keying: User-defined mechanical

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