The QZD series microcomputer controller (11-type water treatment) features intelligent control, power-off protection, alarm protection, and lock function.
This document describes the functions and features of the QZD micro‑computer controller, including power‑up memory retention, alarm protection, and flexible station selection. It also outlines the technical specifications such as input impedance, relay capacity, power consumption and environmental limits.
Detailed installation guidelines specify vibration‑free, non‑corrosive, dry locations with temperature between 0 °C and 50 °C. Operation instructions cover power‑on/off, reset procedures, station time setting, external valve wiring, and alarm handling. Wiring diagrams and connector color codes are provided for motor, valve, pump, and sensor interfaces. This manual is written in Chinese.
| Input switch impedance | Conductive < 500Ω, Open > 50kΩ |
|---|---|
| Relay capacity | AC 250 V 10 A |
| Power supply current | < 2 A |
| Time setting range | 0 ~ 999 minutes |
| Motor delay protection time | 20 seconds |
| High water level delay protection time | 20 seconds |
| Working power supply | AC 220 V 50 Hz |
| Operating temperature range | 0 ~ 50 °C |
| Relative humidity range | 35 % ~ 90 % |
| Dimensions | 280 mm × 234 mm × 120 mm |
| Weight | ≈ 2.5 kg |
Press and hold the Reset key until the display shows "RST"; all station times are set to 1 minute and the controller starts from the first station.