WAGO 750-333 Module | 2-Ch DO, 24V DC, 0.5A, Transistor, Sourcing, 3-Wire

WAGO 750-333 Module | 2-Ch DO, 24V DC, 0.5A, Transistor, Sourcing, 3-Wire

WAGO 750-333 digital output module specifications. 2-channel, 24V DC, 0.5A, sourcing output, transistor, 3-wire connection. For WAGO-I/O-SYSTEM 750.

Product Overview

The WAGO 750-333​ is a two-channel digital output module​ for the WAGO-I/O-SYSTEM 750. It provides sourcing (P-switching) transistor outputs​ with a nominal voltage of 24V DC​ and a rated current of 0.5A per channel. The module features a 3-wire connection​ per channel (L+, load, ground) and is designed to switch loads such as solenoid valves, contactors, and indicators within a modular fieldbus node.

Technical Specifications

Note: Specifications are based on the WAGO 750-333 data sheet. Always verify with the latest documentation.

Key Features

• Sourcing (PNP) Outputs:​ Switches the positive side of the load; compatible with PLC sinking inputs and 3-wire DC sensors.

• 3-Wire Connection:​ Separate terminals for L+ (supply), load, and ground, providing clear wiring and diagnostics.

• High Switching Capacity:​ 0.5A per channel for driving relays, contactors, solenoid valves, and indicators.

• Integrated Protection:​ Short-circuit, overload, and reverse polarity protection for enhanced reliability.

• Diagnostic Feedback:​ Open-circuit detection and status reporting via fieldbus to the controller.

• Visual Channel Status:​ Green LED per channel indicates output is active (voltage present at load).

• WAGO CAGE CLAMP®:​ Tool-free, maintenance-free, and vibration-proof connection.

• Modular Design:​ Hot-swappable (under voltage, with caution) within the WAGO-I/O-SYSTEM 750.

Pinout and Wiring (Per Channel)

The 750-333 module has 6 connection points arranged in two groups of 3 for the two independent channels.

Important:​ The L+ for each channel is not​ supplied by the WAGO backplane. It must be provided externally via these terminals. The ground terminals are internally isolated from the module's functional ground.

Wiring Configuration Example: Sourcing Output

[External 24V DC Supply +] ------+
                                                    |
              Module 750-333                        |
              Ch1: L+1 (T1) ------------------------+
              Ch1: Out1 (T2) -----> [Load, e.g., Solenoid] -----> [External Supply 0V]
              Ch1: Gnd1 (T3) ------------------------+

• Load Connection:​ Connect one side of the load to the Output (T2/T5)​ terminal.

• Supply Connection:​ Connect the other side of the load to the external 0V/COM.

• Power Supply:​ Connect the external 24V DC+​ to the L+ (T1/T4)​ terminal.

• Ground:​ The Ground (T3/T6)​ terminal is connected internally to the external supply 0V via the load. Always verify the specific wiring diagram in the manual.

Fieldbus Data (Typical)

Note: The exact data format is defined by the fieldbus coupler (e.g., 750-333) and its GSD/GSDML/EDS file.

Diagnostic Functions

Important Technical Notes

1. Sourcing vs. Sinking:​ This is a sourcing (PNP) output module. It provides 24V DC​ to the load. To interface with a sinking PLC input​ (which expects 24V), wire the output to the PLC input, and the PLC input common to 0V.

2. External Power Supply Required:​ The 24V DC for the loads (L+ terminals) must be provided from an external power supply, separate from the WAGO backplane's electronics power (terminals X1/X2 on the power supply module).

3. Load Compatibility:​ Suitable for resistive loads (lamps, heaters) and inductive loads (contactors, solenoids). For highly inductive loads, use a flyback/freewheeling diode.

4. Total Current Limit:​ The module can handle 0.5A per channel, but the total current for all modules on the node is limited by the system's 24V field supply bus (e.g., 750-600 power feed module). Always calculate the total 24V load.

5. Short-Circuit Protection:​ The module has electronic short-circuit protection. It operates in a pulse/pause mode during a fault and automatically recovers when the fault is cleared.

6. Heat Dissipation:​ At full load (0.5A per channel), the module dissipates heat. Ensure adequate spacing and ventilation in the cabinet, especially when using multiple modules at high load.

7. Module Replacement:​ The module can be replaced under voltage (hot-swapping) with caution. Ensure the correct type is installed, as incorrect modules can be damaged.

Typical Applications

• Actuator Control:​ Operating solenoid valves, pneumatic valves, and small motors.

• Indicator Lights:​ Controlling panel lights, stack lights, and beacon strobes.

• Relay/Contactor Coils:​ Switching coils of relays and contactors for higher-power loads.

• Alarm Devices:​ Activating horns, buzzers, and other audible alarms.

Note: This data sheet provides general specifications for the WAGO 750-333 digital output module. For complete system integration, wiring diagrams, fieldbus configuration, and safety instructions, consult the official WAGO-I/O-SYSTEM 750 Manual​ and the module-specific data sheet. Always verify wiring with the terminal diagram for your specific module version.

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