A customer wanted to replace an expensive European-made drive controlling a convection oven's stirring fan with an American-made alternative. The oven received unique serial commands from its PLC to provide cooking recipes. KB Electronics engineered a solution using their low-cost KBVF drive and reprogrammed its standard communications module to interpret the proprietary protocol, satisfying the customer's needs at a lower cost.

1. Variable Frequency Drive (VFD) for a Commercial Convection Oven
Application:
A convection oven utilizes a stirring fan to circulate heated air which substantially reduces cooking time. The customer was
purchasing an expensive drive manufactured in Europe which they desired to replace with a low cost drive manufactured in the USA.
In the application, the drive receives serial communication commands from a PLC that provides the user with various cooking
recipes. A standard drive could not be used because the communication protocol, although similar to Modbus, was unique and
proprietary.
KB Solution:
The low cost KBVF Series VFD, with the DIDF Serial Communications Module, was chosen for this application. KB engineers were
able to decode the proprietary serial communications protocol and reprogram the standard DIDF Communications Module.
The result was exactly what the customer desired-a low cost VFD assembled in the USA with proprietary serial communications.
KB Electronics, Inc. (954)346-4900 • Fax (954) 346-3377 • info@kbelectronics.com • www.kbelectronics.com