Product Overview
This signal control module manages digital and analog I/O for Siemens legacy automation systems. Industrial plants continue operating these proven platforms for decades of reliable service. The 6DS1723-8RU interfaces directly with field devices through screw-type terminal connections. Its modular construction enables easy replacement without disturbing adjacent wiring. Maintenance engineers value the clear labeling and accessible test points on the front panel. The module supports both local and remote configuration through system software.
Technical Specifications
| Parameter | Specification |
|---|---|
| Input Channels | 8 digital inputs (24 VDC) |
| Output Channels | 4 digital outputs (24 VDC, 0.5A) |
| Analog Inputs | 2 channels, 0–10 VDC or 4–20 mA |
| Analog Outputs | 2 channels, 0–10 VDC or 0–20 mA |
| Digital Input Voltage | 24 VDC ±20% (nominal) |
| Digital Output Current | 500 mA per channel (resistive load) |
| Analog Resolution | 12-bit (4096 steps) |
| Analog Accuracy | ±0.2% of full scale |
| Isolation Voltage | 500 VAC (I/O to logic) |
| Power Supply | 24 VDC ±15% |
| Power Consumption | ≤6.5 W |
| Operating Temperature | 0°C to +55°C |
| Storage Temperature | –25°C to +70°C |
| Dimensions (W x H x D) | 45 mm x 230 mm x 140 mm |
| Weight | 0.58 kg |
| Mounting Type | Rack-mount with sliding guides |
| Terminal Type | Screw-clamp (removable) |
I/O Configuration and Signal Routing
The 6DS1723-8RU provides flexible mapping of inputs to outputs via onboard jumpers. Digital inputs feature selectable sink or source wiring configurations. Analog channels include built-in scaling for direct engineering unit conversion. Each output incorporates short-circuit protection with automatic restart after fault removal. The module’s signal routing supports both point-to-point and bus-based architectures.
Analog Signal Processing
Dual analog input channels accept either voltage or current signals without external shunt resistors. The 12-bit ADC provides adequate resolution for most process monitoring applications. Analog outputs drive actuators and recorders with 0.1% linearity across the full range. Zero and span adjustments use precision potentiometers accessible from the front panel. Temperature compensation maintains accuracy across the 0°C to 55°C operating band.
Digital Interface Capabilities
Eight digital inputs feature debounce filtering to reject switch contact chatter. Four digital outputs deliver 500 mA each for direct solenoid or relay actuation. Status LEDs indicate the state of every input and output simultaneously. The module supports both sinking and sourcing output configurations for field compatibility. Diagnostic feedback includes open-load detection on all output channels.
Power Distribution and Energy Efficiency
The module draws a maximum of 6.5 watts from the 24-volt backplane supply. Internal capacitors store 220 µF for brief hold-up during supply transients. Reverse-polarity protection guards against installation errors. Efficient switching regulators minimize internal heat generation. The unit’s low thermal dissipation reduces cabinet cooling requirements.
Mechanical Construction and Installation
A steel housing measures 45 millimeters wide and 230 millimeters tall. The module weighs 580 grams and slides into standard 19-inch rack guides. Removable terminal blocks simplify wiring and maintenance activities. Front-panel test points allow signal verification without removing the module. Clear silk-screening identifies all connection points and jumper settings.
Details
| Weight | 0.58 kg |
|---|---|
| Dimensions | 45 × 230 × 140 mm |
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