Description
Application Scenarios
In a water treatment plant, the legacy ABB AC31 control system manages pump stations, valve actuators, and flow monitoring equipment scattered across a large site. The plant needs to integrate modern Modbus-enabled variable frequency drives and smart flow transmitters, but the existing AC31 CPU lacks sufficient communication ports and processing headroom to handle additional serial protocol tasks without impacting scan times.
The ABB 07KP93 solves this by acting as a dedicated Modbus master, polling downstream VFDs and instruments on COM3 while simultaneously serving as a Modbus slave to the plant’s SCADA system on COM4. This dual-role capability allows the AC31 controller to concentrate on pump sequencing and interlock logic while the 07KP93 manages all serial data traffic independently. For facilities maintaining legacy AC31 infrastructure, the 07KP93 extends the system’s useful life by bridging the gap between proven ABB control technology and modern Modbus-based instrumentation.
Parameter
| Main Parameters | Value/Description |
|---|---|
| Product Model | 07KP93 |
| Ordering Code | GJR5253200R1161 |
| Manufacturer | ABB |
| Product Category | Modbus Communication Processor / Coupler |
| Compatible System | ABB Advant Controller 31 (AC31) Series 90 basic units |
| Serial Interfaces | 2 independent ports (COM3, COM4) |
| Physical Layer | RS-232 or RS-485 (selectable per port) |
| Protocol Support | Modbus RTU |
| Operating Modes | COM3/COM4: Master/Slave, Slave/Master, or Slave/Slave (Master-Master not supported) |
| Supply Voltage | 24 V DC |
| Power Consumption | Typical 2.5 W, Maximum 5 W |
| Electrical Isolation | COM3, COM4, and internal electronics mutually isolated |
| Operating Temperature | 0°C to +60°C |
| Protection Rating | IP20 |
| Mounting | DIN rail (EN 50022-35) with snap-on connection to AC31 base unit |
| Physical Dimensions | Approximately 140 × 120 × 85 mm |
| Weight | Approximately 0.45 kg |
