OMRON CJ1W-ID211 is an expansion digital input module for the CJ1 series PLC (Programmable Logic Controller) of Omron. The specific details are as follows:
It belongs to the expansion digital input module of the Omron CJ1 series PLC, designed to receive external digital signals (such as the on/off status of buttons, proximity switches, etc.).
- Number of Input Points: 16 points, capable of processing 16 channels of digital input signals simultaneously.
- Input Voltage: DC 24V, compatible with standard industrial DC power supplies.
- Input Type: Sink Input, with a typical current range of 3-10mA.
- Response Time: 10ms by default, and can be adjusted to 1ms through settings, adapting to signal detection requirements of different speeds (1ms for high-speed signal scenarios like rapid production line actions; 10ms for general scenarios to enhance anti-interference performance).
- Isolation Method: Optoelectronic isolation is adopted between the input circuit and the internal circuit, which effectively blocks electrical interference between the on-site signal loop and the PLC internal system, improving anti-interference capability.
Exclusively designed for the Omron CJ1 series PLC, it must be used in conjunction with the CPU units of the CJ1 series (such as CJ1H, CJ1M, etc.). It connects to the PLC host via an expansion rack or bus to expand the digital input capacity of the PLC system—for example, when the CPU’s built-in input points are insufficient, this module can be added to increase 16 more input channels.
- Industrial-Grade Design: Features excellent anti-interference performance and stability, enabling stable operation in complex factory environments (resisting electromagnetic interference from equipment such as motors and frequency converters, and adapting to temperature fluctuations in industrial sites).
- LED Indicators for Each Input Point: Each input point is equipped with an independent LED indicator, which intuitively displays the signal status (on when the input signal is active, off when inactive). This allows maintenance personnel to quickly diagnose faults (e.g., identifying disconnected sensors or abnormal signal loops by checking indicator status).
- Hot-Swappable (for Some Models): Some versions of the module support hot swapping—they can be installed or removed without powering off the PLC system, facilitating on-site maintenance and module replacement and reducing system downtime.
- Compact Design: Adopts a compact structure, which saves installation space in the control cabinet and is suitable for control systems with high-density module configurations (e.g., integrating multiple input/output modules in a small cabinet).
Widely used in fields such as manufacturing automated production lines, mechanical equipment, and logistics equipment. It is used to collect the switch status signals of external devices (e.g., detecting whether a workpiece is in place via a proximity switch, or receiving start/stop button signals) and provides input basis for the PLC’s logic control (e.g., triggering the next production process when the "workpiece in place" signal is received).
- During wiring, pay attention to the power polarity and voltage range (strictly following DC 24V specifications). Incorrect polarity or overvoltage (e.g., connecting to AC 220V by mistake) may cause permanent damage to the module.
- The response time should be set correctly according to system requirements: a shorter response time (1ms) is suitable for high-speed signal detection, but may be more sensitive to interference; a longer response time (10ms) enhances anti-interference ability but is not suitable for ultra-fast signal scenarios.
