The manual provides overview, specifications, wiring, operation steps and troubleshooting for the LDFD/S fire door monitor by Lida Yingjie.
The LDFD/S fire door monitor is an intelligent two‑bus controller designed to meet GB29364‑2012 fire‑door monitoring requirements. It connects to LDFD‑TB, LDFD‑TK modules and magnetic or motorized door devices, and can be linked with fire alarm systems.
The document includes product overview, technical parameters, structural features, wiring instructions, interface description, operation procedures, fault analysis, safety precautions, transport/storage guidelines, contact information and appendices for expansion boxes and system wiring diagrams. This manual is written in Chinese.
| Main power voltage / power | AC187V‑242V 50Hz 40W |
|---|---|
| Backup power source | DC12V‑7AH (2 cells series) |
| Backup protection / recovery voltage | 21V±0.5V / 23V±0.5V |
| Display and operation | 8‑inch LCD touch screen |
| System capacity | 1‑4 circuits, up to 4×200 modules |
| Communication bus voltage | DC15V‑20V (effective) |
| Circuit current | <300 mA |
| Operating environment | 0 °C–40 °C, humidity ≤95 %, altitude ≤4500 m |
| Dimensions | H550 mm × W430 mm × D150 mm |
| Protection rating | IP30 |
| Installation method | Wall‑mount |
The initial password is 1111.
It supports 1‑4 circuits, each able to connect up to 200 modules, for a total of up to 800 modules.
Connect AC220 V to the power terminal; the power cable must be at least 1.5 mm² BV wire.