Tutto sui PLC: la CPU
A practical engineering guide to PLC CPU operation, from deterministic scan cycles and I/O image tables to memory, communications, diagnostics, redundancy, processor sizing, and reliable system...
Control and regulation of three-phase asynchronous motor speeds is handled efficiently by the VFD185E43A variable frequency drive, a core component of the modular Delta Electronics VFD-E Series. Engineered for low-horsepower, high-performance industrial applications, this drive delivers a maximum applicable motor output of 18.5 kW (25 HP). Its physical architecture features a highly adaptable modular design that supports standard extension cards for I/O functions and fieldbus communications, allowing integration into diverse distributed control topologies.
The unit features built-in PLC functionality, allowing users to write and execute basic ladder logic programs directly within the drive. With an integrated RS-485 interface supporting the Modbus protocol, the VFD185E43A establishes robust communication links with PLC systems, HMIs, and supervisory networks. The physical chassis is designed with forced fan cooling and an IP20 protection rating to withstand industrial control panel environments.
| Manufacturer | Delta Electronics |
| Model / Part Number | VFD185E43A |
| Series | VFD-E |
| Max. Applicable Motor Output | 18.5 kW (25 HP) |
| Mains Input Voltage | Three-phase 460V AC (380V to 480V AC, 50/60 Hz) |
| Cooling Method | Forced Fan Cooling |
| Control Method | V/f Control, Sensorless Vector Control (SVC) |
| Communication Interface | RS-485 (Modbus ASCII/RTU protocol) |
| Enclosure Rating | IP20 |
| Net Weight | 7.47 kg |
| Terminal Group | Terminal Label | Function Description |
|---|---|---|
| Main Power Terminals | R/L1, S/L2, T/L3 | AC line voltage inputs (3-phase) |
| U/T1, V/T2, W/T3 | Variable frequency AC output to motor | |
| PE | Protective Earth / Ground connection | |
| Analog I/O | +10V, AVI, ACM | Analog voltage input (0 to 10V DC) for speed reference |
| ACI, ACM | Analog current input (4 to 20mA DC) for speed reference | |
| Digital Inputs | MI1 to MI6 | Multi-function digital inputs (programmable) |
| DCM | Common digital signal reference ground | |
| Outputs & Communication | RA, RB, RC | Multi-function relay output (SPDT contact) |
| SG+, SG- | RS-485 serial communication terminals |
Global Express Shipping
Returns & Warranty

Control and regulation of three-phase asynchronous motor speeds is handled efficiently by the VFD185E43A variable frequency drive, a core component of the modular Delta Electronics VFD-E Series. Engineered for low-horsepower, high-performance industrial applications, this drive delivers a maximum applicable motor output of 18.5 kW (25 HP). Its physical architecture features a highly adaptable modular design that supports standard extension cards for I/O functions and fieldbus communications, allowing integration into diverse distributed control topologies.
The unit features built-in PLC functionality, allowing users to write and execute basic ladder logic programs directly within the drive. With an integrated RS-485 interface supporting the Modbus protocol, the VFD185E43A establishes robust communication links with PLC systems, HMIs, and supervisory networks. The physical chassis is designed with forced fan cooling and an IP20 protection rating to withstand industrial control panel environments.
| Manufacturer | Delta Electronics |
| Model / Part Number | VFD185E43A |
| Series | VFD-E |
| Max. Applicable Motor Output | 18.5 kW (25 HP) |
| Mains Input Voltage | Three-phase 460V AC (380V to 480V AC, 50/60 Hz) |
| Cooling Method | Forced Fan Cooling |
| Control Method | V/f Control, Sensorless Vector Control (SVC) |
| Communication Interface | RS-485 (Modbus ASCII/RTU protocol) |
| Enclosure Rating | IP20 |
| Net Weight | 7.47 kg |
| Terminal Group | Terminal Label | Function Description |
|---|---|---|
| Main Power Terminals | R/L1, S/L2, T/L3 | AC line voltage inputs (3-phase) |
| U/T1, V/T2, W/T3 | Variable frequency AC output to motor | |
| PE | Protective Earth / Ground connection | |
| Analog I/O | +10V, AVI, ACM | Analog voltage input (0 to 10V DC) for speed reference |
| ACI, ACM | Analog current input (4 to 20mA DC) for speed reference | |
| Digital Inputs | MI1 to MI6 | Multi-function digital inputs (programmable) |
| DCM | Common digital signal reference ground | |
| Outputs & Communication | RA, RB, RC | Multi-function relay output (SPDT contact) |
| SG+, SG- | RS-485 serial communication terminals |
Global Express Shipping
Returns & Warranty
Orders are processed and delivered Monday-Friday (excluding public holidays).
For full eligibility, restocking fees, and international return details, please view our official Refund & Return Policy .
| Country of origin |
United States
|