Product Name: Digital Output Modules
Brand Name: Allen Bradley
Model Number:1746-OBP16
Country of Origin:USA
Warranty: 12 Months
Whatsapp：+86 18159889985
Email：[email protected]
Brand Name: |
Allen Bradley |
Model Number: |
1746-OBP16 |
Country of Origin: |
USA |
Packaging Details: |
Original new Factory Sealed |
Delivery Time: |
Delivery time in stock |
Payment Terms: |
T/T |
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Sales Manager: |
Stella |
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Send an email: |
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The Allen‑Bradley 1746‑OBP16 is a 16‑point high‑current digital DC output module purpose‑built for the SLC 500 programmable controller platform. This 1746‑OBP16 module provides 16 sourcing transistor outputs with a 20.4 – 26.4V DC operating range, delivering 1.5A per point at 30°C and 6.4A total module capacity. The 1746‑OBP16 features an integrated fused common with a dedicated blown‑fuse LED indicator and a configurable JP1 jumper that determines processor behavior upon fuse failure. With 1500V AC isolation, 0.1 ms ON‑delay response, and Class I Division 2 hazardous location certification, the 1746‑OBP16 delivers robust, high‑current output control for demanding industrial automation applications.
High Current Density – 1.5A per point (6.4A per module) at 30°C provides superior drive capability for heavy loads in a compact 16‑point footprint.
Integrated Fused Common – Factory‑installed 10A fuse per common simplifies wiring and reduces external component count, while the blown‑fuse LED enables instant fault identification.
Configurable Fault Response – JP1 jumper lets users choose between continued processor operation or non‑recoverable processor fault upon fuse failure, tailoring behavior to application safety requirements.
Fast Switching Performance – 0.1 ms ON‑delay enables precise control of high‑speed actuators and time‑critical processes.
Hazardous Location Ready – Class I, Division 2, Groups A, B, C, D certification allows deployment in potentially explosive environments without additional barriers.
Proven SLC 500 Integration – Engineered specifically for the SLC 500 platform, ensuring seamless plug‑and‑play compatibility with fixed and modular chassis.
16 Sourcing Transistor Outputs – Independently addressable DC outputs with common return for driving solenoids, relays, indicator lights, and motor starters.
Wide Operating Voltage – 20.4 – 26.4V DC sourcing configuration.
High Current Capacity – 1.5A per point continuous at 30°C; 1.0A per point at 60°C; 6.4A total module capacity.
Fast Response Time – 0.1 ms maximum ON‑delay and 1.0 ms OFF‑delay for rapid switching.
Integrated Fused Common – 10A fuse provides short‑circuit protection for wiring to external loads.
Blown Fuse LED Indicator – Front‑panel red LED illuminates when fuse opens, provided backplane and load power are present.
Configurable JP1 Jumper – Selects processor behavior: continue operation or generate non‑recoverable fault on fuse failure.
1500V AC Isolation – Galvanic isolation between field wiring and backplane logic.
Removable Terminal Block – Screw‑type connector simplifies wiring and maintenance.
Hazardous Area Certification – Class I, Division 2, Groups A, B, C, D approved.
Surge Current Capability – 4A per point for 10 ms; 32A per module for 10 ms.
Fast Turn‑Off for Inductive Loads – Built‑in surge suppressors provide rapid OFF‑delay (47 ms vs. 152 ms for standard modules) when switching inductive loads.
The 1746‑OBP16 serves as a high‑current digital output interface between the SLC 500 processor and field‑connected DC loads. Upon receiving logic‑level control signals from the processor via the 5V DC backplane, the module's internal transistor output circuits switch the external DC supply voltage (20.4 – 26.4V DC) to the corresponding output terminals. The 16 outputs share a common return path protected by a single 10A fuse, which provides short‑circuit protection for field wiring.
When a channel is energized by the processor, the sourcing transistor connects the external DC positive supply to the load terminal, driving current through the connected device to the common return. The module supports continuous current up to 1.5A per point at 30°C (derated to 1.0A at 60°C), with total module capacity of 6.4A. Surge capability extends to 4A per point for 10 ms, accommodating inrush currents from lamps and inductive loads.
The integrated fuse protects against short‑circuit conditions on the field wiring. In the event of a fuse failure, all 16 outputs are de‑energised, and the front‑panel blown‑fuse LED illuminates provided backplane and load power are present. The JP1 jumper defines system‑level behaviour upon fuse failure: in the factory‑default position (pins 1‑2), the processor continues normal operation; when set to pins 2‑3, a blown fuse triggers a non‑recoverable processor fault, halting all outputs and setting the major fault bit. The module draws 250 mA from the 5V backplane and requires no 24V backplane current. Built‑in surge suppressors enable fast OFF‑delay (47 ms) for inductive loads, significantly reducing contact arcing and extending load life compared to standard modules (152 ms).
Q1: What is the Allen‑Bradley 1746‑OBP16 used for?
The 1746‑OBP16 is a 16‑point high‑current digital DC output module for SLC 500 systems, designed to control solenoids, relays, indicator lights, motor starters, and other DC‑powered field devices requiring up to 1.5A per channel in industrial automation applications.
Q2: What is the voltage range of the 1746‑OBP16?
The 1746‑OBP16 operates with a sourcing voltage range of 20.4 to 26.4V DC, with a nominal rating of 24V DC. The module is designed for sourcing configuration.
Q3: How many outputs does the 1746‑OBP16 provide and how are they configured?
The 1746‑OBP16 provides 16 sourcing transistor outputs with a common return path. All 16 points share a single common, protected by an integrated 10A fuse.
Q4: What happens if the fuse blows on the 1746‑OBP16?
When a fuse blows on the 1746‑OBP16, all 16 outputs are de‑energised. The front‑panel blown‑fuse LED illuminates if backplane and load power are present. Processor behaviour depends on the JP1 jumper setting: factory default allows continued operation, while the alternative setting triggers a non‑recoverable processor fault.
Q5: What replacement fuse should be used for the 1746‑OBP16?
The 1746‑OBP16 requires a Littelfuse #322010, 10A or #332010, 10A fuse to maintain UL/CSA rating. The replacement fuse kit is catalog number 1746‑F8, which contains five fuses per kit.
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