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 ...
MUA Interlock Fault
MUA Interlock Fault Summary This guide is intended for contractors and licensed personnel. Lock out Tag Out procedures and all other safety standards should be followed before working on any electrical equipment. Reference the product manual (OIM) ...
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 ...
VFD Videos
The following videos are applicable for SMV Variable Frequency Drives utilizing the 571 programming file. They do not apply to the new i500 series products or older AC-Tech/Lenze products Programming VFDs ...