Electrical Control Packages
PWM Signal from ECPM03 Troubleshooting - TELCO Motors
Some products are equipped with Electrically Commutated Motors (ECM), which are variable speed motors. These motors are controlled by a Pulse Width Modulated (PWM) signal. That signal can originate from a speed controller within a fan or make up air ...
Temperature Sensor Configuration for Fan Cycling by Temperature
International Mechanical Code (IMC) requires that all Type-1 Commercial Cooking operations have fans which activate automatically when the cooking process begins. To achieve compliance with code, numerous manufacturers install temperature sensors ...
VFD Fault Codes and Troubleshooting - AC Tech Lenze SMV Series
Drive Display Description Cause Troubleshooting Procedure Stop or XX.X No fault Normal operation Normal operation F_OF Output Fault: Transistor Fault This can be caused by several issues: The drive output could be short circuited There could be a ...