| 1 | Machine and Harness Compatibility | Connector layout, pin assignment, output channel arrangement, signal polarity, and cable length. | Select a board whose electrical interface matches the existing machine wiring, or plan a documented harness conversion. | Compare the machine wiring diagram with the board pinout and perform a continuity test before applying power. | Incorrect wiring can cause inactive hooks, unintended actuation, short circuits, or permanent component damage. |
| 2 | Solenoid Capacity and Channel Count | Number of independently controlled hooks or needles, connector grouping, and spare output requirements. | Choose a channel count equal to or greater than the machine’s active actuators, including any required expansion margin. | Confirm the actual hook count and map every output channel to a physical actuator during a low-speed test. | Insufficient channels create missing pattern elements; incorrect channel mapping produces distorted designs. |
| 3 | Electrical Voltage and Current Handling | Required supply voltage, peak coil current, average load, protection against overcurrent, and heat dissipation. | Match the board to the solenoid electrical rating and verify that the power supply can support simultaneous or grouped activation. | Measure the supply under load and compare coil resistance and current requirements with the board specifications. | Voltage mismatch may cause weak actuation, overheating, driver failure, or shortened solenoid life. |
| 4 | Timing and Motion Synchronization | Clock input, encoder or position signal, firing delay, cycle speed, and synchronization with the main shaft. | Prefer adjustable timing and a position-feedback input when the machine operates at variable speed or requires precise shed formation. | Run a test pattern at several speeds and compare the programmed position with the actual fabric repeat. | Timing errors can create skipped picks, pattern displacement, uneven shed opening, or fabric defects. |
| 5 | Pattern Programming Format | Supported pattern file formats, bitmap or matrix structure, repeat size, color or lift coding, and data conversion rules. | Choose a controller that accepts the formats used by the design workflow and preserves the intended hook sequence without manual re-entry. | Import a representative production file and compare its row, column, repeat, and lift information with the source design. | Unsupported or incorrectly converted files may produce reversed, mirrored, truncated, or incomplete patterns. |
| 6 | Pattern Memory and Data Management | Internal memory, removable storage, maximum pattern size, file naming, backup, and recovery functions. | Allow enough capacity for the largest repeat and retain backup space for production recipes and revisions. | Load the largest planned pattern, save multiple revisions, and verify that data remains intact after restart. | Limited memory can force pattern segmentation, while poor data protection increases the risk of lost production settings. |
| 7 | Communication with the Main Controller | Communication interface, data rate, handshaking, start/stop signals, fault feedback, and electrical isolation. | Use an interface supported by the machine controller and confirm whether real-time synchronization or only pattern transfer is required. | Test start, stop, reset, fault, and data-transfer commands under normal and interrupted communication conditions. | Communication failure may stop production, desynchronize the pattern, or prevent the machine from responding safely. |
| 8 | Diagnostics and Fault Monitoring | Channel indicators, error codes, open-coil detection, short-circuit protection, event logs, and test mode. | Prioritize clear channel-level diagnostics when rapid troubleshooting and reduced downtime are important. | Disconnect one actuator at a time and confirm that the board identifies the correct channel and fault condition. | Poor diagnostics increase troubleshooting time and may allow repeated faults to damage drivers or solenoids. |
| 9 | Operating Environment and Reliability | Permitted temperature and humidity, vibration resistance, dust protection, cooling, grounding, and electrical noise tolerance. | Select an enclosure and installation method suited to the loom area, with adequate airflow and protection from lint, moisture, and vibration. | Review environmental ratings and monitor board temperature during a continuous production trial. | Heat, dust, moisture, or electromagnetic interference can cause intermittent outputs and premature electronic failure. |
| 10 | Safety, Maintenance, and Lifecycle Support | Emergency-stop behavior, safe restart, isolation, replaceable modules, firmware update process, documentation, and spare availability. | Choose a board with documented fail-safe behavior, accessible maintenance procedures, and support for the expected service period. | Test emergency stop, power recovery, fault reset, firmware backup, and replacement-board configuration before production use. | Unsafe restart or unavailable spare parts can increase injury risk, downtime, and total ownership cost. |
