Redundant Power Supply Module Mitsubishi Universal model AJ55TB2-16R
AJ55TB2-16R Description
The AJ55TB2-16R is a high-performance remote relay output module designed for industrial fieldbus distributed control systems. It acts as a network slave station, receiving control commands from the main controller via fieldbus communication, and provides 16-channel mechanical relay contact outputs to drive various industrial actuators, solenoid valves, contactors and indicator devices. Featuring compact structure, built-in isolation circuit and reliable relay switch performance, it is widely applied in decentralized automation scenarios requiring dry contact signal output.
AJ55TB2-16R Key Features
- 16 Independent Relay Output Channels:16 isolated mechanical relay points for flexible multi-path load control.
- Dry Contact Relay Output:Form A normally open contact output, suitable for AC and DC mixed load circuits.
- Built-in Optocoupler Isolation:Complete electrical isolation between internal communication circuit and external relay contacts to suppress interference.
- Fieldbus Network Compatibility:Supports mainstream industrial fieldbus protocols, occupying few network stations to save address resources.
- LED Status Indication:Front panel power, network communication and individual channel status LEDs for quick on-site diagnosis.
- Industrial Grade Relay:Long mechanical and electrical service life, stable switching under rated load for long-term continuous operation.
- Screw Terminal Wiring:Standard screw terminal block for firm wiring, anti-loosening and suitable for vibration environment.
- DIN Rail Mounting:Standard DIN rail installation, easy to assemble, replace and expand in control cabinets.
- Overvoltage & Surge Suppression:Built-in absorption circuit to protect relay contacts and rear-stage loads from voltage impact.
- Wide Environmental Adaptability:Withstands temperature fluctuation, humidity and mechanical vibration in factory workshop conditions.
AJ55TB2-16R Materials & Applications
Materials
- Housing:Flame-retardant high-strength engineering plastic with UL94 V-0 grade, good insulation and impact resistance.
- Circuit Board:High-temperature FR-4 glass epoxy multilayer PCB with SMT industrial components.
- Relay Unit:Industrial electromagnetic relay with alloy contacts, oxidation resistance and stable conduction performance.
- Terminals:Nickel-plated brass screw terminals, corrosion resistant and reliable wire connection.
- Internal Components:Optocoupler isolators, surge absorption elements, voltage regulation chips and filter circuits.
- Indicators:Long-life high-brightness LED lamps for clear status display.
Typical Applications
- Factory Automation:Control of solenoid valves, air cylinders, hydraulic valves, intermediate relays and signal lights.
- Packaging Machinery:Actuator control, sealing and positioning switch signal output.
- Material Handling:Conveyor system start-stop control, sorting mechanism and diverter action output.
- Machine Tools:Cooling system, lubrication system and safety interlock loop control.
- Water Treatment:Water pump, fan and electric valve switch control.
- Textile & Printing Machinery:Action control of transmission mechanism and executive components.
- Building Automation:Air conditioning fan, lighting and pipeline valve remote control.
- General Industrial Control:Dry contact signal switching and interlock control of various automation equipment.
AJ55TB2-16R Important Parameters
| Parameter |
Specification |
| Model Number |
AJ55TB2-16R |
| Product Type |
Fieldbus Remote Relay Output Module |
| Output Channel |
16 channels mechanical relay output |
| Relay Contact Type |
Form A (Normally Open) |
| Rated Switching Voltage |
240V AC / 30V DC |
| Rated Switching Current |
2A per point (resistive load) |
| Min Switching Load |
5V DC, 10mA |
| Mechanical Life |
20,000,000 operations |
| Electrical Life |
100,000 operations (rated load) |
| Isolation Method |
Optocoupler isolation between network and output |
| Communication Mode |
Industrial fieldbus slave station |
| Occupied Station |
1 station |
| Power Supply |
24V DC (19.2~26.4V DC) |
| Internal Current Consumption |
Approx. 60mA @ 24V DC |
| Connection Type |
Screw terminal block |
| Mounting |
Standard DIN rail |
| Operating Temperature |
0°C ~ +55°C |
| Storage Temperature |
-20°C ~ +75°C |
| Operating Humidity |
10%~90% RH (non-condensing) |
| Vibration Resistance |
5~150 Hz, 9.8 m/s² |
| Shock Resistance |
147 m/s², 11ms duration |
| Insulation Resistance |
≥20 MΩ (500V DC) |
| Withstand Voltage |
1500V AC 1 minute |
| Protection Grade |
IP20 |
| Indicators |
Power, Network, Channel status LED |
| Certifications |
CE, UL/cUL, RoHS compliant |
