The DS3820CI2A is a 2-channel digital counter/encoder input module designed for high-speed counting, frequency measurement, and quadrature encoder interfacing in PLC/DCS systems. It accepts 24 V DC signals from incremental encoders, proximity sensors, flowmeters, and high-speed pulse generators. The DS3820CI2A features two independent counter channels, each with 32-bit resolution, programmable count modes (up/down, quadrature x1/x2/x4, frequency, period, and pulse-width measurement), and built-in digital filtering/debouncing. It is the ideal solution for motion control, position feedback, and high-speed event counting applications.
The DS3820C12AK21C is a 12-channel digital input module with 120 V AC/DC wide-range input capability, featuring per-channel fused protection and a spring-clamp terminal block (21-pin configuration per suffix “K21C”). It accepts 80–150 V AC/DC signals from field devices such as limit switches, pushbuttons, proximity sensors, and relay contacts. The DS3820C12AK21C includes individual fuses per channel (2 A typical) for short-circuit protection, LED status indicators, and software-selectable input filtering. The spring-clamp termination distinguishes it from the screw-type version, offering tool-free, vibration-resistant wiring for faster installation and maintenance.
The DS3820C12AH21C is a 12-channel digital input module with 120 V AC/DC wide-range input capability, featuring per-channel fused protection and a specific terminal block type (screw-type with cage-clamp, 21-pin configuration per suffix). It accepts 80–150 V AC/DC signals from field devices such as limit switches, pushbuttons, proximity sensors, and relay contacts. The DS3820C12AH21C includes individual fuses per channel (2 A typical) for short-circuit protection, LED status indicators, and software-selectable input filtering. The fused design makes it the preferred choice for applications with high risk of field wiring faults.
The DS3820C12A is a 12-channel digital input module designed for high-density discrete signal monitoring in PLC/DCS systems. It accepts 120 V AC/DC inputs (wide-range), making it suitable for direct connection to industrial field devices such as limit switches, pushbuttons, proximity sensors, and relay contacts without external interface relays. The DS3820C12A features 12 optically isolated channels, LED status indicators per point, and built-in filter/debounce circuitry for reliable operation in electrically noisy environments.
The DS3820ATMA is an 8-channel analog input with thermocouple (TC) capability and integrated mathematical averaging functions, designed for applications requiring averaged temperature values from multiple sensors. It supports standard thermocouple types (J, K, T, E, R, S, B, N) with built-in cold-junction compensation (CJC), 16-bit resolution, and on-board firmware that calculates channel-group averages, minimum/maximum tracking, and rate-of-change monitoring. The DS3820ATMA offloads calculation tasks from the main PLC/DCS controller, reducing CPU load and simplifying programming for multi-sensor temperature zones.
The DS3820ATEA is an 8-channel analog input with thermocouple (TC) capability and isolated per-channel excitation for active sensors. It supports standard thermocouple types (J, K, T, E, R, S, B, N) with built-in cold-junction compensation (CJC), and provides isolated excitation outputs for powering external transmitters or active temperature sensors. The DS3820ATEA combines TC measurement and sensor power in a single module, 16-bit resolution, per-channel software configuration, and 1500 V isolation (field-to-logic and channel-to-channel for excitation). It is designed for applications requiring both temperature sensing and active sensor powering without external power supplies.
The DS3820ATAE is an 8-channel analog input with thermocouple (TC) and millivolt (mV) capability, featuring enhanced accuracy and extended temperature range for demanding high-precision applications. It supports direct connection to standard thermocouple types (J, K, T, E, R, S, B, N) and low-level mV signals (±10 mV, ±20 mV, ±50 mV, ±100 mV), with 16-bit resolution, built-in cold-junction compensation (CJC), and 1500 V isolation. The DS3820ATAE is designed for environments requiring superior measurement stability and extended ambient operation.
The DS3820ATAD is an 8-channel analog input with thermocouple (TC) and millivolt (mV) capability, specifically designed for direct connection to standard thermocouple types (J, K, T, E, R, S, B, N) and low-level mV signals (±10 mV, ±20 mV, ±50 mV, ±100 mV). It features 16-bit resolution with built-in cold-junction compensation (CJC), per-channel software-configurable sensor type, and 1500 V isolation. The DS3820ATAD eliminates the need for external thermocouple transmitters, making it the ideal solution for temperature monitoring in high-channel-count applications.
The DS3820AISA1A1A is an 8-channel analog input module featuring simultaneous sampling with a factory-fixed input configuration and specific terminal block type. It captures all 8 channels at the exact same instant with 16-bit resolution, 1500 V isolation, and a pre-set input range (4–20 mA or 0–10 V per suffix). The fixed configuration makes it a plug-and-play solution for power monitoring and dynamic process applications requiring time-coherent measurements without software setup.
The DS3820AISA is an 8-channel analog input with simultaneous sampling capability, designed for applications requiring phase-accurate or time-coherent measurements across multiple channels. It features 16-bit resolution, per-channel software-configurable input ranges (4–20 mA, 0–10 V, ±10 V), 1500 V isolation, and a dedicated sample-and-hold circuit per channel to capture all inputs at the exact same instant. The DS3820AISA is the solution for dynamic process monitoring and power quality analysis.
The DS3820AIRE is an 8-channel analog input with RTD/resistance capability, specifically designed for extended temperature range and enhanced EMI protection. It supports direct connection to 2-wire, 3-wire, or 4-wire RTDs (Pt100, Pt1000, Ni100, Ni1000) and resistive sensors, with 16-bit ratiometric resolution, software-configurable excitation current per channel, and 1500 V isolation. The DS3820AIRE is built for harsh environments where temperature extremes and electrical noise are significant concerns.
The DS3820AIRA1A1A is an 8-channel analog input module specifically designed for direct RTD/resistance measurement with a factory-fixed sensor configuration and specific terminal block type. It supports Pt100 (3-wire default, check suffix) with 16-bit ratiometric resolution, 1500 V isolation, and automatic lead compensation. The fixed configuration makes it a plug-and-play solution for temperature monitoring applications requiring minimal setup.
