Allen-Bradley 1786-TPS Terminator Power Supply | 24V DC, 1.0A, DIN Rail, IP20 Specs

Allen-Bradley 1786-TPS Terminator Power Supply | 24V DC, 1.0A, DIN Rail, IP20 Specs

Allen-Bradley 1786-TPS terminator power supply specifications. 24V DC output, 1.0A capacity, DIN rail mount, IP20 protection. For industrial control and I/O systems.

Product Overview

The Allen-Bradley 1786-TPS​ is a terminator power supply​ designed for industrial control and I/O system applications. This module provides 24V DC output​ with 1.0A current capacity, DIN rail mounting, and IP20 protection. The "1786" designation indicates the Allen-Bradley industrial component series, "TPS" specifies the terminator power supply function. This compact power supply is specifically designed to provide termination power for I/O modules, sensors, and other field devices in automation systems, with built-in protection features for reliable operation in industrial environments.

Technical Specifications

Note: Specifications are based on Allen-Bradley 1786 series technical documentation. The "1786-TPS" model specifically indicates the terminator power supply configuration. Actual specifications may vary slightly depending on production batch.

Model Number Decoding (1786-TPS)

• 1786:​ Series designation (Allen-Bradley industrial component series)

• TPS:​ Product type (TPS = Terminator Power Supply)

Note:​ The "TPS" designation specifically indicates a Terminator Power Supply, which is designed to provide power for termination circuits in I/O systems. This is not a general-purpose power supply but is optimized for providing clean, regulated power to termination points in industrial control systems.

Key Features

• Compact Design:​ Space-efficient DIN rail mounting

• Wide Input Range:​ 85-264V AC auto-ranging input

• Regulated Output:​ 24V DC ±1% regulation

• Overload Protection:​ Current limiting with auto-recovery

• Overvoltage Protection:​ 28-32V clamp protection

• Short Circuit Protection:​ Auto-recovery short circuit protection

• High Efficiency:​ 85% typical efficiency

• Fanless Operation:​ Natural convection cooling for silent operation

• LED Status Indicator:​ Power OK indicator for visual status

• Industrial Grade:​ Designed for harsh industrial environments

• Easy Installation:​ Spring clamp terminals for quick wiring

• International Approvals:​ Certified for global use

Performance Characteristics

Typical Applications

• I/O System Power:​ Termination power for Allen-Bradley I/O modules

• Sensor Power:​ Power supply for proximity sensors, photoelectric sensors

• Field Device Power:​ Power for switches, transmitters, and indicators

• Control Circuit Power:​ Power for relay coils, solenoid valves

• Interface Power:​ Power for signal conditioners and isolators

• Termination Power:​ Power for terminating resistors in network systems

• Machine Control:​ Localized power for machine control circuits

• Process Control:​ Power for process instrumentation

• Panel Power:​ Auxiliary power in control panels

• Safety System Power:​ Power for safety relay circuits

Important Technical Notes

1. Load Capacity:​ Maximum continuous output current is 1.0A. Do not exceed this rating. Derate output current above 40°C ambient temperature.

2. Input Voltage:​ Accepts 85-264V AC, 47-63 Hz input. Ensure proper voltage range for application. Input power should be properly fused per local codes.

3. Mounting:​ Install on 35mm DIN rail with proper orientation (typically vertical). Ensure adequate clearance for ventilation.

4. Wiring:​ Use proper wire size (12-24 AWG) and follow NEC/IEC standards. Tighten terminals to specified torque.

5. Grounding:​ Proper grounding is essential for safety and noise immunity. Connect protective earth ground to designated terminal.

6. Protection Features:​ Built-in protection includes overload, overvoltage, short circuit, and over temperature. These are auto-recovery types that reset when fault condition is removed.

7. Environmental Conditions:​ Install in appropriate enclosure for additional protection. IP20 provides limited protection against dust and moisture.

8. Heat Dissipation:​ Ensure adequate ventilation. Maximum power dissipation is approximately 4W at full load. Do not block ventilation openings.

9. Multiple Units:​ For parallel operation or higher current requirements, use separate power supplies with proper load sharing or consider higher capacity models.

Note: For complete installation guidelines, wiring diagrams, application notes, and detailed technical data, consult the official Allen-Bradley 1786 Series Technical Manual. Always verify the exact model number configuration with the manufacturer, as notation variations may occur.