Xiamen ZhiCheng Automation Technology Co., Ltd
"Precision Engineered, Globally Trusted – Innovating Automation Control & Modular Excellence."
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The Allen-Bradley 1756-OB16D ControlLogix® Digital Output Module delivers 16-channel industrial-grade control for mission-critical automation systems. Designed for Rockwell Automation's ControlLogix platform, this Class 1 Division 2 (HazLoc) certified module provides 24V DC sourcing outputs with robust isolation (1500V AC backplane-to-field) and 0.5A continuous current per channel. Its solid-state MOSFET switching technology enables ≤100µs response times while supporting direct connection to solenoids, relays, and indicators without external drivers. Housed in a ruggedized chassis (-40°C to +70°C operational range), it features point-per-circuit diagnostics and UL 61010-1/NEMA 4X compliance. Embedded electronic keying prevents configuration mismatches in redundant systems using Studio 5000®.
Key performance parameters:
Safety-critical output control:
Operational superiorities:
Advanced control features:
| Property Category | Specification/Value |
|---|---|
| Manufacturer | Allen-Bradley (Rockwell Automation) |
| Product Line | ControlLogix |
| Model Number | 1756-OB16D |
| Module Type | 16-Channel Diagnostic Sourcing Digital Output |
| Output Channels | 16 (Grouped in 8 with individual commons) |
| Output Type | 24V DC Sourcing (Positive Switching) |
| Load Voltage Range | 19.2V DC – 30V DC (±20%) |
| Continuous Current | 0.5A per point (Maximum 8A per group of 8) |
| Peak Current (Surge) | 1.5A per point (≤ 1 ms) |
| On-State Voltage Drop | ≤ 1.5V DC @ 0.5A (Typical) |
| Off-State Leakage Current | ≤ 100 μA |
| Switching Frequency | ≤ 500 Hz (Standard) PWM Capable: Up to 10 kHz (Selectable per channel) |
| Response Time (On/Off) | On Delay: ≤ 100 μs Off Delay: ≤ 500 μs |
| Diagnostic Features | Per-Point: Short-Circuit, Overload, Open Wire (Load Removal), Power Loss Detection |
| Diagnostics Update | ≤ 1 ms |
| Backplane Current | 5V DC: 150 mA (Typical) 24V DC: 50 mA (Typical) |
| Connection Type | Removable Terminal Block (RTB) - Requires 1756-TBSH |
| Isolation | Field-to-Logic: 250V AC Continuous Field-to-Field: None (Common per group) |
| Status Indicators | Per Point: Green (On), Red (Fault) Module: Green (OK), Red (Fault), Amber (Busy) |
| Diagnostic Resolution | 1 ms Timestamp Accuracy |
| Safety Certifications | SIL 2 (IEC 61508), UL Class I Div 2, ATEX Zone 2, CE, c-UL-us, IECEx |
| Operating Temperature | 0°C to 60°C (32°F to 140°F) |
| Surge Protection | 35V DC (1 min), 48V DC (1 sec) |
| Software Configuration | Studio 5000 Logix Designer® (v20 or later) |
| Module Width | Single Slot |
| Compatibility | ControlLogix Chassis (1756-Ax/Bx/Cx/Dx/Ex/Fx/Gx) |
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Company Information
Xiamen ZhiCheng Automation Technology Co., Ltdit is a leading global supplier of control system components. We specialize in control systems and drives.
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