M91-t4-r6-zk1 Manual May 2026

| Output Type | Qty | Max Load (Resistive) | Max Load (Inductive) | Protection | |-------------|-----|---------------------|----------------------|-------------| | Relay (r6) | 6 | [e.g., 5A @ 250V AC]| [e.g., 2A] | None (external varistor) | | Transistor (t4) | 4 | [e.g., 0.5A @ 24V DC]| [e.g., 0.2A] | Short-circuit / overtemp |

The M91-t4-r6-zk1 is not a dumb I/O module; it contains a programmable logic engine. The manual dedicates 30+ pages to the proprietary ladder logic environment, M91-Logic Studio. M91-t4-r6-zk1 Manual

The manual warns of a rare issue: if the Earth Ground terminal (pin 3) is floating, the t4 inputs may drift by ±5°C. Always verify ground continuity with a multimeter. | Output Type | Qty | Max Load