> ## Documentation Index > Fetch the complete documentation index at: https://docs.industrialpmr.com/llms.txt > Use this file to discover all available pages before exploring further. # Edge Hardware Nodes Overview > Specifications, terminal interfaces, and installation standards for the ipmr223m-v1 and ipmr226 industrial IoT controllers. Industrial PMR edge controllers are purpose-built industrial hardware units designed to operate reliably inside machine electrical control cabinets and harsh factory environments. *** ## Edge Device Models Industrial PMR consists of **strictly two device models**, representing the evolution of our edge monitoring technology: | Device Model | Classification | Power Analyzer | Primary Capabilities & Target Machinery | | :- | :- | :- | :- | | **`ipmr223m-v1`** | **Older, Simpler Production Node** | ❌ **No Power Analyzer** | Dedicated digital cycle and stroke counting. Uses optoisolated limit switch/proximity inputs for piece counts, basic CT current sensing for run/idle state detection, RTC timestamping, and offline flash ring-buffering. | | **`ipmr226`** | **New & Refined Flagship Controller** | ✅ **Integrated 3-Phase Power Analyzer** | Advanced edge controller combining digital stroke/pulse counting with an integrated high-precision 3-phase power analyzer (true RMS line-to-line/neutral voltages, phase currents, active kW, reactive kVAR, power factor, frequency Hz, and cumulative kWh). | > [!NOTE] > > The `ipmr223m-v1` is ideal for machines requiring purely operational cycle counting, stroke timing, and run/idle status. The `ipmr226` is the refined all-in-one standard for heavy machinery (such as injection molding machines, presses, and extruders) where comprehensive 3-phase electrical monitoring and production output must be captured simultaneously in a single unit. *** ## Physical Enclosure & Terminal Interfaces Both models are housed in standard 35mm DIN-rail mountable, flame-retardant industrial enclosures. Below are the physical terminal configurations for each model: ### 1. `ipmr223m-v1` (Older, Simpler Node) Designed for streamlined machine cycle counting with minimal cabinet wiring footprint: | Terminal Header | Label / Pin | Electrical Specification | Field Equipment Connection | | :- | :- | :- | :- | | **Power Input (Top)** | `L, N` | 85–264 VAC, 50/60 Hz | Machine 230 VAC auxiliary control circuit or dedicated 2A fuse. | | **Digital Inputs (Bottom)** | `IN1, GND` | 5–24 VDC Optoisolated (2.5 kV) | Primary mold close limit switch or inductive proximity sensor. | | | `IN2, GND` | 5–24 VDC Optoisolated (2.5 kV) | Part ejection photo-eye or secondary stroke switch. | | **Current Sense (Bottom)** | `CT-RUN, GND` | Analog Split-Core CT Input | Machine motor conductor for run/idle load threshold detection. | *** ### 2. `ipmr226` (New, Refined Controller with Integrated Power Analyzer) Engineered for simultaneous 3-phase energy auditing and comprehensive production monitoring: | Terminal Header | Label / Pin | Electrical Specification | Field Equipment Connection | | :- | :- | :- | :- | | **3-Phase Potential (Top)** | `L1, L2, L3, N` | Up to 480 VAC line-to-line, True RMS | Direct 3-phase potential via dedicated 3-pole 2A/6A MCB. | | **Current Clamps (Bottom)** | `CT-R, CT-Y, CT-B, GND` | Multi-phase split-core CT leads | Non-invasive CTs clamped around main motor phase lines ($R, Y, B$). | | **Digital Inputs (Bottom)** | `IN1, IN2, IN3, GND` | 5–24 VDC Optoisolated (2.5 kV) | Multi-channel machine cycle, ejector stroke, and scrap sensor leads. | | **Auxiliary Output (Bottom)** | `RLY-COM, RLY-NO` | Form-A Dry Contact (250 VAC, 5A) | Automation interlock, andon tower light, or shutdown relay. | *** ## External Wiring Standards ### Digital Machine Pulse & Cycle Inputs (Both Models) * **Sensor Compatibility**: Accepts standard 5V to 24V DC PNP/NPN proximity sensors, optical photo-eyes, or mechanical limit switches. * **Optoisolation**: All digital inputs feature 2.5 kV optical isolation to safeguard internal logic circuitry from factory ground loops and inductive spikes. * **Wiring**: Connect the sensor switched signal lead to `IN1` (or `IN2`) and the sensor reference return to `GND`. ### 3-Phase Power Analyzer Connections (`ipmr226` Exclusively) * **AC Voltage Sensing (`L1, L2, L3, N`)**: * Tap off downstream of the main machine isolator through a dedicated 3-pole 2A or 6A miniature circuit breaker (MCB). * Phase lines $L1 (R)$, $L2 (Y)$, $L3 (B)$, and Neutral ($N$) enable continuous line-to-neutral and line-to-line true RMS voltage monitoring. * **Current Transducers (`CT-R, CT-Y, CT-B`)**: * Clamp split-core CTs around the insulated phase conductors supplying the machine load or main motor. * **Orientation**: Ensure the directional arrow on each CT points toward the load (machine), away from the supply breaker. * Connect the CT secondary leads to the corresponding terminals (`CT-R`, `CT-Y`, `CT-B`) and common `GND`. *** ## Diagnostic LED Status Indicators Both edge controllers feature front-panel multi-color diagnostic LEDs for rapid visual inspection: | LED Label | State | Diagnostic Meaning | Action Required | | :- | :- | :- | :- | | **PWR** | Solid Green | Internal power supply stable (85–264 VAC active). | Normal operation. | | **WIFI** | Rapid Blink Blue | Scanning / connecting to configured plant Wi-Fi SSID. | Awaiting router association. | | | Solid Blue | Wi-Fi connected with valid local IP address. | Normal operation. | | | Slow Blink Amber | Wi-Fi disconnected; local offline flash buffering active. | Check plant access point or RSSI. | | **MQTT** | Solid Green | Secure TLS connection active to `mqtt.industrialpmr.com`. | Normal telemetry streaming. | | | Blink Orange | Broker reconnecting / authentication in progress. | Automatic recovery underway. | | **STATUS** | Toggle Flash | Machine cycle pulse registered on digital input (`IN1`/`IN2`). | Confirms valid stroke counting. | *** ## Physical Installation Guidelines 1. **Power Isolation**: Always de-energize and lock out the machine main electrical panel before opening the cabinet doors. 2. **DIN Rail Placement**: Mount the node on a standard 35mm DIN rail with a minimum 50mm clearance from high-frequency Variable Frequency Drives (VFDs) and heavy contactor coils to prevent inductive electromagnetic interference (EMI). 3. **Antenna Routing**: For steel electrical cabinets, route the external high-gain antenna through an enclosure knockout to ensure strong Wi-Fi signal propagation (-65 dBm or better). 4. **BLE Commissioning**: Follow the [BLE Provisioning Guide](https://docs.industrialpmr.com/hardware/ble-provisioning.md) to configure plant Wi-Fi credentials from a mobile phone or tablet without connecting physical serial cables. 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