Variable Frequency Drive (VFD) for a Commercial Convection Oven

Variable Frequency Drive (VFD) for a Commercial Convection Oven


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.

What the World Would be Like if Palletizer Machines Didn’t Exist

Hello Automation, Goodbye Manual Palletizing


Palletizer machines have become an essential part of automation, replacing human error and injury in manufacturing with efficiency and speed. In addition to such benefits, palletizers can handle environments that would otherwise be injurious to workers. Instead of requiring the hire of more laborers to do this work, many companies have adopted palletizers into their workplace environments in order to get the job done more quickly, effectively and safely.

Read more

Nippon Pulse receives international standards certifications

April 4th, 2016

RADFORD, Va. – Nippon Pulse America Inc. (NPA) is pleased to announce that its Virginia-based sales office has been approved for ISO 9001:2008 and 14001:2004 certifications by BSI America.

BSI certified NPA for both Quality Management and Environmental Management under ISO’s international standards. NPA joins over 1 million companies and organizations worldwide to be certified under the 9001 standard for Quality Management, which allows companies to ensure consistency and continual improvement in products and services. The 14001 standard allows NPA to measure and improve its impact on the environment through the creation of a certified Environmental Management system.

Many of NPA’s products are manufactured in Nippon Pulse factories located in Japan and China, all of which have previously received both the ISO 9001:2008 and 14001:2004 certifications. As a sales-based office, NPA chose to work toward the certification as a commitment to providing customers with the highest quality service, and to reducing its impact on the environment.iso_certification_congrats

Tech Tip – Force Tube Parallel Motor Mount Assembly

The Exlar® FT Series actuators combined with a parallel motor mounting configuration use a polymer reinforced belt drive system. The drive train does not require any lubrication and any oil or dirt contamination within the belt drive system will decrease belt effectiveness and life. The belt and pulley system should be inspected periodically for excessive wear and proper tensioning.

Do not remove the belt cover while the actuator is operating. Always remove power from the attached motor before removing the belt cover to service any component of the drive train (i.e. belts, pulleys, bushings, inline couplings, gears, etc). Failure to do so can result in damage to the actuator or cause serious injury to the operator.

The following picture is only an example of a typical belt and pulley drive train in an FT Series actuator.

Proper-Belt-Tension Belt-Tension-Diagram

These belt drives do not require as much tension as other belt drives that depend on friction to transmit the load. The installation procedure should begin by installing the belt with a snug fit, neither too tight nor too loose. Now, measure the belt span, (t), as shown in the picture above. With one pulley free to rotate, use a spring scale to apply a perpendicular force to the center of the belt width at the mid-point of the belt span. For belts wider than 2”, it is suggested that a strip of keystock, or something similar be placed across the belt under the point of force to prevent distortion. Measure the deflection of the belt at the mid-point. While applying the correct force, there should be 1/64” of deflection for each inch of belt span. For example, the total deflection for a 32” belt span is 32”*1/64” = ½”. The appropriate amount of force for each belt is shown on the customer approval drawing, or you may contact our application engineer team for assistance.