AutomationDirect C0-08ND3 Discrete Input Module

The AutomationDirect C0-08ND3 is an 8-point, 12-24 VDC discrete input module designed for use with the CLICK and CLICK PLUS Programmable Logic Controller (PLC) systems. It serves as an interface to connect digital field devices (like sensors, limit switches, pushbuttons) to the PLC, allowing the PLC to monitor their ON/OFF status. This module offers flexibility with sinking/sourcing compatibility and features isolated commons for enhanced wiring options and noise immunity.

Product Detailed Description

• Function: The primary function of the C0-08ND3 is to receive digital (ON/OFF) signals from various field devices. When an input device provides a voltage within the specified "ON" range, the module detects it as an active input, and the corresponding input bit in the PLC's memory is set. Conversely, when the voltage is outside the "ON" range, the input bit is reset. This allows the PLC program to make decisions and control outputs based on the status of these physical inputs.

• Input Type: It is a sinking/sourcing input module, meaning it can be wired to accept signals from both sinking (NPN type) and sourcing (PNP type) field devices. This versatility simplifies wiring and reduces inventory.

• Voltage Range: Designed for 12-24 VDC input signals, making it compatible with a wide range of common industrial sensors and switches.

• Isolation: The module features 2 isolated commons, with 4 points per common. This isolation helps to prevent electrical noise from one common affecting another, and also offers greater flexibility in wiring different voltage sources or ground potentials to groups of inputs.

• Indicators: Each input point has a green LED status indicator on the module's face, providing a visual indication of the input's ON/OFF state, which is useful for troubleshooting. There is also a power indicator.

• Terminal Block: It comes with a removable terminal block, which simplifies wiring and module replacement without re-wiring.

• Compatibility: It is part of the AutomationDirect CLICK PLC family, known for its compact size, ease of programming, and affordability.

Product Parameters

• Inputs per Module: 8 discrete inputs

• Nominal Input Voltage: 12-24 VDC

• Operating Voltage Range: 10.8-26.4 VDC

• Input Current (Typical): 5.5 mA @ 24 VDC

• Maximum Input Current: 7 mA @ 26.4 VDC

• Input Impedance: 4.7 kΩ @ 24 VDC

• ON Voltage Level: > 8.0 VDC (minimum)

• OFF Voltage Level: < 3.0 VDC (maximum)

• Minimum ON Current: 1.4 mA

• Maximum OFF Current: 0.5 mA

• OFF to ON Response Time: Max 3.5 ms, Typ 2 ms

• ON to OFF Response Time: Max 4 ms, Typ 2.5 ms

• Input Type: Sinking/Sourcing

• Commons: 2 isolated commons, 4 points per common

• Status Indicators: Green LEDs for each input point (logic side), Green LED for power

• Bus Power Required (24VDC): Max. 30 mA (All Inputs On)

• Terminal Block: Removable, 11-position (AutomationDirect P/N C0-8TB)

• Weight: Approximately 2.8 oz (80 g)

• Operating Temperature: 0°C to 55°C (32°F to 131°F)

• Storage Temperature: -20°C to 70°C (-4°F to 158°F)

• Ambient Humidity: 30% to 95% relative humidity (non-condensing)

• Agency Approvals: UL508, UL61010-2-201 (File No. E157382), IEC standards for environmental testing.

• Country of Origin: China

Product Advantages

• Cost-Effective: AutomationDirect is known for providing high-value automation products at competitive prices, making the C0-08ND3 an economical choice for input expansion.

• Versatile Sinking/Sourcing: Its ability to handle both sinking and sourcing inputs simplifies sensor selection and wiring configurations.

• Isolated Commons: The two isolated commons offer improved noise immunity and flexibility when connecting inputs from different power sources or ground potentials.

• Compact Design: As a stackable I/O module for the CLICK PLC, it contributes to a small overall footprint, saving space in control panels.

• Easy Installation and Wiring: The removable terminal block allows for quick and easy wiring, and the module simply plugs onto the CLICK PLC CPU or other I/O modules. ZIPLink pre-wired cables are also available for even faster wiring.

• Clear Diagnostics: Individual LED indicators for each input point facilitate quick visual checks and troubleshooting.

• Reliable Performance: Designed for industrial environments, offering reliable operation in typical automation applications.

• User-Friendly Software: Integrates seamlessly with the free, easy-to-use CLICK programming software.

Precautions

• Power Budgeting: Always calculate the total current required by all modules connected to the CLICK PLC's logic side and field side power supplies to ensure adequate power. It's strongly recommended to use separate power sources for logic and field-side power to enhance noise immunity and safety.

• Wiring Standards: Adhere to all applicable local and national electrical codes and wiring practices. Ensure proper grounding of the PLC system.

• Input Voltage Range: Verify that the voltage of your input devices falls within the module's specified operating voltage range (10.8-26.4 VDC).

• Sinking/Sourcing Compatibility: Understand the wiring requirements for sinking (NPN) and sourcing (PNP) sensors/switches to ensure correct connection to the module.

• Environmental Conditions: Operate the module within the specified temperature and humidity ranges. Avoid installing it in areas with excessive vibration, direct sunlight, or corrosive atmospheres.

• Electrostatic Discharge (ESD): Take precautions to prevent ESD when handling the module, as electronic components can be sensitive to static electricity.

• Firmware Compatibility: Ensure the CLICK PLC CPU firmware version is compatible with the C0-08ND3 module (typically v1.00 or later).

• Removable Terminal Block: While convenient, ensure the removable terminal block is securely seated after wiring to prevent intermittent connections.

Product Applications

The AutomationDirect C0-08ND3 discrete input module is a fundamental component in many industrial automation and control systems, typically used in conjunction with a CLICK PLC. Its applications include:

• Machine Control:

• Monitoring the state of limit switches on conveyors, presses, or assembly lines (e.g., product presence, gate position).

• Reading the status of pushbuttons and selector switches on operator control panels.

• Detecting sensor outputs for object detection (e.g., proximity sensors, photoelectric sensors).

• Process Automation:

• Monitoring the open/closed status of valves.

• Detecting liquid levels in tanks using float switches.

• Monitoring alarm contacts from various process instruments.

• Building Automation:

• Monitoring door/window open/closed status.

• Detecting occupancy using motion sensors (providing a discrete signal).

• Status monitoring of HVAC equipment (e.g., fan running/stopped, filter alarms).

• Packaging Machinery:

• Tracking product count on a conveyor line.

• Monitoring safety interlocks on machine guards.

• Material Handling:

• Detecting package presence or position.

• Monitoring equipment states in automated storage and retrieval systems.

Shipping Port: China

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