Model Number Explanation

AS: Modicon Automation System component

B234: Series identifier for 220VAC output modules

501: Standard variant (16-channel, 220VAC, no special coating)

Technical Specifications

Output Type: Digital, 16 channels, 220VAC (50/60Hz)

Output Rating: 2A per channel, 8A common maximum

Isolation: Channel-to-backplane isolation, 1500VAC

Protection: Overcurrent, short-circuit, transient voltage suppression

Operating Voltage: 187–253VAC

Operating Temperature: 0°C to +40°C

Storage Temperature: −40°C to +70°C

Humidity: 5%–80% non-condensing

Altitude: Up to 1000m above sea level

Protection Class: IP20 (dust protected)

Cooling: Natural convection

Dimensions: 125 × 90 × 75mm (W×H×D)

Weight: ≈0.53kg

Interface & Configuration

Backplane: Modicon 984 series I/O bus connector

Output Terminals: Screw terminals (16 outputs + common)

Status Indicators: 16 channel LEDs (ON/OFF), module RUN/FAULT LED

Mounting: Standard 19-inch rack or DIN rail

Wiring: Accepts 0.5–2.5mm² copper wires

Key Features

High-Voltage Output: Directly drives 220VAC loads (relays, contactors, solenoids)

16-Channel Density: Compact design with 16 isolated outputs

Industrial Isolation: 1500VAC isolation for noise immunity and safety

Diagnostic LEDs: Clear status indication for each channel and module health

Robust Protection: Built-in surge and short-circuit protection

Legacy Compatibility: Seamless fit for Modicon 984 series racks and CPUs

Applications

Systems: Modicon 984 series PLC systems

Industries: Manufacturing, process control, power, water treatment

Use Cases: AC motor starters, heater control, lighting panels, valve actuators, pump control

Compatibility

Racks: Modicon 984 series 8/11-slot backplanes

CPUs: AS-9370-001 (984-680), AS-984B-128, PC-E984-685

Software: Concept, ProWORX 32, P190 programming software

Status

Discontinued: Obsolete, no longer manufactured

Availability: Refurbished/used units with 1-year warranty