MeloAuto-Trusted PLC & DCS Parts Supplier
General Information
- Model: F 8652
- Application: Used in PES H41q-MS, HS, HRS systems
- Safety Class: AK 1 – 6 (Safety-related applications)
- Construction:
- Two Intel 386EX microprocessors (32-bit)
- Two PCBs in European standard format
- One additional PCB for diagnostic display circuits
- Operating Voltage: 5V DC, 2000 mA
Technical Specifications
| Specification | Details |
|---|---|
| Microprocessors | 2 × INTEL 386EX, 32-bit |
| Clock Frequency | 25 MHz |
| Operating System Memory | 1 MB Flash-EPROM |
| User Program Memory | 512 KB Flash-EPROM |
| Data Storage | 256 KB SRAM |
| Interfaces | 2 × RS 485 serial interfaces |
| Fail-Safe Watchdog | 24V DC output, 500mA load, short-circuit proof |
| Space Requirement | 8 TE |
Diagnostic Display
- 4-digit alphanumeric display for system status and errors
- 2 LEDs:
- CPU (Central module errors)
- I/O (Testable I/O module errors)
- 3 push buttons:
- “<>” and “↵” for navigating diagnostic information
- ACK button to reset error indications or restart the system
Pin Allocation for RS 485 Interface
| Pin | RS 485 Signal | Description |
|---|---|---|
| 1 | – | Not used |
| 2 | RP | 5V, diode decoupled |
| 3 | A/A RxD/TxD-A | Receive/Transmit Data A |
| 4 | CNTR-A | Control Signal A |
| 5 | C/C DGND | Data Ground |
| 6 | VP | 5V Power Supply Positive Pole |
| 7 | – | Not used |
| 8 | B/B RxD/TxD-B | Receive/Transmit Data B |
| 9 | CNTR-B | Control Signal B |
Maintenance & Battery Information
- Buffer Battery Lifespan:
- 2500 days (6.8 years) at 25°C
- 100 days at 60°C
- Recommended Replacement: Every 4 years
- Battery Type: CR 2477N (HIMA Part No. 44 0000018)
- Startup Configuration:
- Check bus station number and transmission rate at Switch S1