Technical Specifications
| Parameter Name | Parameter Value |
|---|---|
| Product Model | BCU06-ETH C3 |
| Order Number | 1SAP140100R1170 |
| Manufacturer | ABB |
| Product Series | AC500 |
| Product Type | PLC CPU Module (with LCD and keys) |
| Processor | 32-bit |
| User Program Memory | 256 KB |
| Ethernet Interface | 1 × 10/100 Mbps, Modbus TCP support |
| Serial Interfaces | 2 × RS232/RS485 (switchable), Modbus RTU support |
| Local I/O Expansion | Up to 10 S500 I/O modules |
| Storage Expansion | SD card slot (program backup / firmware update) |
| Supply Voltage | 24 VDC (±10%) |
| Programming Standard | IEC 61131-3 (LD, FBD, ST, etc.) |
| Protection Rating | IP20 |
| Mounting | DIN rail |
| Operating Temperature | +5°C to +55°C (some sources cite 0–60°C; refer to original manual) |
Main Features and Advantages
Integrated LCD and Keypad for On-Site Commissioning: The BCU06-ETH C3 features an LCD display and RUN, DIAG, CFG, and VAL function keys on the front panel, allowing engineers to read module status, diagnostic error codes, and adjust basic parameters directly at the control cabinet. For unmanned distributed sites such as pumping stations and fan rooms across a plant, this design reduces dependence on portable computers and noticeably improves the efficiency of routine inspection and initial fault diagnosis.
Dual Serial Ports Plus Ethernet Communication Configuration: One Ethernet port connects to SCADA or a programming computer, while two switchable serial ports handle tasks such as sending speed commands to variable frequency drives and exchanging HMI data. The communication resource allocation of the BCU06-ETH C3 is relatively generous among comparable compact CPUs, covering the common “supervisory system + VFD + touchscreen” combination without additional communication modules.
SD Card Program Backup and Rapid Recovery: The BCU06-ETH C3 supports user program and firmware backup via SD card. When replacing a CPU on site, inserting the backup card into the new module and powering up allows the program to be restored automatically, avoiding the full process of reconnecting a programming computer, locating source programs, downloading, and debugging. This feature has practical value for maintenance teams facing long spare parts turnaround cycles and limited on-site technical resources.
Mature AC500 Ecosystem Compatibility: As a member of the AC500 platform, the BCU06-ETH C3 can directly expand with S500 series digital, analog, and special function modules and can be programmed and maintained using Control Builder AC500 or Automation Builder. For factories already using ABB AC500 systems, spare part replacement and system expansion with this module require no introduction of a new engineering toolchain.
