Always disconnect power before wiring. If you are controlling high-power heaters, do not pass the high current directly through the controller terminals (Terminals 3 & 4 usually max out at 3 Amps). Use the controller to switch a larger external Contactor or Solid State Relay (SSR) instead.

Secure the instrument in your control panel using the included mounting brackets.

Auto-tuning. Set this to "1" to let the controller automatically calculate the best PID values for your system. 💡 Troubleshooting Common Issues

For a stable start-up, set your temperature to 90% of your target first. Let the system stabilize through a few heating cycles before bumping it up to your final desired value. Reading the Lights: Green Light: Heating is active. Red Light: Target temperature reached; heating stopped. Why Professionals Choose the XMTD-2201

Standard terminals for the XMTD-2201 typically follow this layout (check the sticker on the side of your specific unit to confirm):

The XMTD-2201 utilizes a simple interface to manage temperature targets.

| Terminal # | Signal | Wire Color / Note | | :--- | :--- | :--- | | 1 & 2 | Power (100-240VAC) | Brown (Live), Blue (Neutral) | | 3 & 4 | Alarm 1 Relay (NO) | Normally Open (3-4 close on alarm) | | 4 & 5 | Alarm 2 Relay (NO) | Share common terminal 4 | | 6 & 7 | Sensor Input (- / +) | Thermocouple: Red (-), Yellow (+) | | 7 & 8 | Sensor Input for RTD | For Pt100: 7 & 8 shorted via one lead | | 9 & 10 | Control Output | SSR: 12VDC (polarity sensitive) OR Relay |

Even with a proper , errors occur. Here is the official error code table:

Connect your thermocouple to the input terminals.