Product Short Description
Product Introduction
The 07-7331-2301 is a 16-channel digital output module designed to safely control various actuators (solenoid valves, contactors, signal transmitters) in explosive-gas and combustible-dust environments. The module communicates with the process control system via PROFIBUS-DP and provides comprehensive diagnostic feedback.
Description
Technical Specifications
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Number of channels: 16 digital outputs (transistor, open-drain)
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Output voltage range: 5–30 V DC
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Max current per channel: 0.5 A; total current ≤ 4 A
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Load types: inductive (relays, solenoid valves) and resistive (LED)
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Short-circuit protection: independent per channel
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Overload protection: automatic output cutoff
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Reverse polarity protection: on input side
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Isolation voltage: 1000 V AC channel-to-channel, 2500 V AC channel-to-bus
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Communication protocol: PROFIBUS DP, 9.6 kbps – 12 Mbps auto-adaptive
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Address setting: rotary coding switch or software configuration (address 1–126)
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Bus power supply: supports bus-powered mode or external 24 V DC
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Diagnostics: per-channel short/open/overload and bus fault diagnostics via LED indicators
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Mechanical: Ex e increased-safety construction
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Emergency shutoff: secondary power terminal (U−/U+) allows forced deactivation of controlled actuators
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Protection rating: IP20 (higher rating with optional protective enclosure)
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Operating temperature: −20 °C to +60 °C
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Storage temperature: −40 °C to +85 °C
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Relative humidity: 5 %–95 % non-condensing
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Dimensions: 45 mm (W) × 115 mm (H) × 100 mm (D)
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Weight: approx. 200 g
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Housing: aluminum with anti-corrosion coating
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Connection: detachable screw terminals (max 1.5 mm² wire)
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Certifications: ATEX, IECEx, CE, UL, cULus, GOST-R
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Compliance: EN 61000-6-2 (immunity), EN 61000-6-4 (emission); IEC 60068-2-6 (vibration), IEC 60068-2-27 (shock)
Function Features
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16 short-circuit-proof digital outputs with 0.5 A capacity each
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Integrated diagnostic module reports channel status (short circuit, voltage failure) through both LEDs and PROFIBUS diagnostic data
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Redundant power input (U−/U+) enables emergency shutdown of driven actuators
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Intrinsic safety design for Zone 1/21 (gas) and Zone 2/22 (dust) hazardous areas
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Compatible with major PLC and DCS systems
Application Scenarios
Oil, gas, chemical, and pharmaceutical plants requiring explosion-protected automation; control of motor starters, solenoid valves, indicator lamps, and other actuators; robot, conveyor, and packaging machine digital signal output; remote I/O expansion where explosion protection is mandatory.
Performance Parameters
Each channel independently drives up to 0.5 A at up to 30 V DC; total module load ≤ 4 A. Switching frequency up to 1 kHz. Full diagnostics available per channel.
Material & Structure
Aluminum housing with anti-corrosion coating; compact DIN-rail mountable body (45 mm wide).
Working Principle
The module receives digital output commands from the PROFIBUS-DP network, decodes the addressed channel instructions, and switches the corresponding transistor outputs. Each channel’s health (short/open/overload) is continuously monitored and reported back to the controller via diagnostic messages and front-panel LEDs.
Installation Requirements
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Install on standard DIN rail inside a suitable cabinet or protective enclosure
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For hazardous-area use, the enclosure must satisfy the required IP and Ex ratings
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Connect 24 V DC (or bus power) to the primary power terminals
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Optionally connect the U−/U+ redundant power terminals for emergency shut-off capability
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Set the PROFIBUS address via the rotary coding switch or software
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Wire field loads to the removable screw terminals (≤ 1.5 mm²)
Usage Notes
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Ensure output voltage and current do not exceed 30 V DC / 0.5 A per channel
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Inductive loads must be protected with flyback diodes to protect output transistors
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Avoid using the non-protected version in high-temperature, high-humidity, or strong EMI environments
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Regularly check LED indicators to detect and address faults promptly
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