0-48672 RELIANCE

Reliance 0-48672 Output Module

Brand：RELIANCE Model number：0-48672

Country of origin: United States Product weight：0.55kg

HS code：9032899099

Product Details：

Product Dimensions：

Reliance Electric output modules served as the interface between the logic of a programmable logic controller (PLC) or other control system and the physical actuators in an industrial process. They converted the low-level electrical signals from the control system into the higher power signals required to operate devices like motors, solenoids, lights, and alarms.

Product Details

Functionality:

Reliance output modules primarily functioned to switch electrical power to field devices based on commands from the central control unit.
They provided electrical isolation between the sensitive control electronics and the potentially noisy or high-voltage industrial loads.
Modules would typically include circuitry for overcurrent protection and often status indicators (LEDs) to show the state of each output.

Types:

Relay Output Modules: Utilized electromechanical relays to provide electrically isolated contacts. They were highly versatile, able to switch AC or DC loads of varying voltages and currents. Often offered normally open (NO) and/or normally closed (NC) contacts.
Solid-State Output Modules (Transistor or Triac): Used solid-state components (transistors for DC, triacs for AC) for faster switching speeds, longer life (no moving parts), and often higher switching frequencies. However, they typically had lower current ratings and specific voltage requirements (AC or DC, not both).
Digital Output Modules: Designed to switch discrete (on/off) loads. These could be:
Analog Output Modules: Used to produce variable voltage or current signals (e.g., 0-10V, 4-20mA) to control proportional devices like variable speed drives, proportional valves, or temperature controllers. These modules typically included Digital-to-Analog Converters (DACs).

Physical Characteristics:

Often designed as plug-in modules for specific I/O racks or chassis, facilitating easy installation and replacement.
Terminal blocks for field wiring connections.

Product Parameters (General Examples - Specifics vary greatly by module)

Output Type: Digital (Relay, Transistor, Triac), Analog (Voltage, Current)
Number of Outputs: Typically 4, 8, 16, or 32 channels per module.
Output Voltage Range:

Digital: 24V DC, 48V DC, 120V AC, 240V AC.
Analog: 0-10V DC, +/-10V DC, 0-20mA, 4-20mA.

Maximum Output Current:

Digital: Varies widely, from a few hundred mA to several Amperes per point (e.g., 0.5A, 1A, 2A for solid-state; 5A, 10A for relays).
Analog: Typically very low, in mA range.

Isolation: Often optical or electrical isolation between the logic side and the field side, and sometimes channel-to-channel isolation.
Response Time/Switching Speed:

Digital: Milliseconds for relays (mechanical delay), microseconds for solid-state.
Analog: Conversion time and update rate.

Power Dissipation: Watts per channel/module.
Operating Temperature Range: Standard industrial range, e.g., 0°C to 60°C (32°F to 140°F).
Protection: Short-circuit protection, overcurrent protection, sometimes surge protection.
Indicators: LEDs to indicate output status (ON/OFF) or module health.

Product Advantages (Historically & Generally for Industrial Output Modules)

Robustness: Designed to withstand the harsh conditions of industrial environments (vibration, dust, electrical noise).
Reliability: Built for continuous operation and long lifespan, crucial for minimizing downtime.
Electrical Isolation: Protects the sensitive control system from voltage spikes, noise, and faults in the field wiring.
Flexibility (especially Relay Modules): Relay outputs are versatile and can switch a wide range of AC or DC voltages and currents, making them adaptable to various load types without needing external interface relays for many applications.
Direct Control: Enable direct control of various actuators without additional intermediate devices in many cases.
Diagnostics: Status LEDs often provide quick visual feedback on the operational state of individual outputs.
Modularity: Easy to replace individual modules in case of failure, reducing repair time.

Important Considerations

Load Type: Match the output module type (digital/analog, relay/solid-state) to the characteristics of the load (AC/DC, resistive/inductive, current/voltage). Inductive loads (motors, solenoids) require output modules with appropriate surge suppression (e.g., snubbers for AC, flyback diodes for DC).
Current and Voltage Ratings: Never exceed the specified maximum current or voltage for a channel or the module. Overloading can lead to module failure.
Environmental Conditions: Ensure the module is installed within its specified temperature and humidity limits.
Wiring Practices: Adhere to proper industrial wiring standards, including correct wire sizing, shielding, and grounding, to minimize noise and ensure safety.
Power Supply: Provide a stable and correctly sized power supply for the output modules and the loads they control.
Safety Interlocks: Output modules control physical actions. Implement external hardwired emergency stop circuits and other safety interlocks independent of the PLC logic to ensure personnel and equipment safety.
Legacy Support: If dealing with older Reliance Electric modules, consider the availability of spare parts and technical support, as these are legacy products. Replacement strategies might involve newer, compatible modules from other manufacturers or system upgrades.

Product Applications

Reliance output modules were (and in many legacy systems, still are) widely used across various industrial sectors:

Manufacturing and Assembly:

Controlling motors for conveyors, pumps, fans.
Actuating solenoids for pneumatic or hydraulic cylinders.
Operating indicator lights and alarms.
Controlling robotic end-effectors.

Process Control:

Opening and closing valves in fluid handling systems.
Controlling heating elements.
Regulating motor speeds in conjunction with variable frequency drives (using analog outputs).

Material Handling:

Controlling sortation gates, lifts, and shuttles.

Packaging:

Operating grippers, cutters, and sealing mechanisms.

Building Automation:

Controlling lighting circuits, HVAC dampers, and access control mechanisms (though dedicated building automation systems are more common now).

0-846747-3R RELIANCE

We have the same series of models in stock. If you don't find the model you need, please contact us and we will provide you with an official quotation！