A: The most critical factor is not screen size or price, but whether the supplier can truly integrate Kanban data with ESD electrostatic monitoring. Many factories discover after purchase that the Kanban only displays output volume while ESD wristband alarms still rely on manual shouting, rendering the installation ineffective.
1. Common Misconception: Treating the Kanban as a "Large Monitor"
Focusing solely on brightness, screen size, and lowest cost. In reality, the core of a production line Kanban lies in data acquisition and linkage capabilities; the screen is merely the output interface. Ignoring this will cause bottlenecks when connecting to MES or ESD access control systems later.
2. Real Pitfalls: Closed Interfaces and ESD Data Silos
Some suppliers use proprietary protocols for their Kanbans, while ESD monitoring hosts come from different vendors, resulting in mismatched data. A hypothetical electronics factory encountered a situation where an ESD instrument triggered an alarm, yet the Kanban continued to display "Normal Production," causing the anomaly to be missed. Additionally, some Kanbans do not support real-time refresh, relying instead on scheduled polling. This creates alarm delays of dozens of seconds, which is practically useless for ESD protection scenarios.
3. Avoidance Strategy: Verify Three Hard Indicators First
1. Does it support standard protocol integration with the ESD monitoring system, ensuring alarms are pushed to the Kanban within seconds accompanied by audio-visual alerts?
2. Does the Kanban possess local edge computing capabilities to record ESD anomaly events even when the network connection is lost?
3. Does the supplier have practical ESD site experience and understand how to integrate monitoring points such as wrist straps, anti-static mats, and ionizing blowers?
4. Best Practice: Validate with Small-Scale Pilots
It is recommended to first conduct a pilot on a single production line, running ESD alarms, workstation status, and output volume data on the same screen for one week. Choosing a supplier willing to participate in the pilot is more reliable than selecting one based on attractive technical parameters alone.