Safety Requirements
The manufacturer’s specifications and instructions provided in the documentation should be strictly followed during the installation of variable frequency drives and commissioning. Before starting the installation, carefully read the operating instructions and adhere to them.
Use of the Frequency Converter
In the PL there are electrical components of the drive designed for installation at industrial enterprises or electric motors. Commissioning and starting operation are not permitted until it is ensured that the mechanism complies with the requirements of the EU Directive 2006/42/EC and EN 60204. According to the CE marking, the VFD complies with the Low Voltage Equipment Directive 2006/95/EC as well as EN 61800-5-1. Drive users are responsible for verifying compliance with the requirements of the Electromagnetic Compatibility Directive 2004/108/EC.
The VFDs are available through specialized dealers and are intended exclusively for professional use in accordance with EN 61000-3-2. Use of the VFD for purposes other than intended may result in the loss of warranty. The VFDs also have a UL mark according to UL508C, confirming their compliance with the CSA C222-No 14-95 standard. Technical data, connection specifications, and information about external conditions specified on the nameplate and in the manual must be strictly adhered to.
Anyone involved in any work on a variable speed drive must carefully read and understand the manual before starting the work.
Main Information
The DC circuit diagram of the VFD is subject to voltage during operation, so there is always a risk of contact with high voltage. The VFDs are used to drive moving parts and may heat up on the surface during operation.
Any unauthorized removal of necessary covers from the variable frequency drive, improper use, installation or operation may lead to serious injury or material damage. Only qualified personnel may perform transportation, installation, commissioning, setting up, or maintenance work. The term "qualified personnel" includes anyone who is familiar with the installation, assembly, commissioning, and VFD operations, as well as the potential hazards and has the appropriate qualifications to perform the work.
Individuals who are unfamiliar with VFD operations, as well as children, should not have access to the variable frequency drive.
Transportation and Storage
During transportation and storage, the variable frequency drives must remain in their original packaging. VFDs may only be stored in dry rooms, protected from dust and moisture. Variable frequencies can only be subjected to small temperature variations. Follow the conditions in accordance with EN 60721-3-1 for storage, EN 60721-3-2 for transportation, and labeling on the packaging. The duration of storage without connection to the allowable rated voltage should not exceed one year.
Transportation and Installation
Damaged or destroyed components should not be put into operation, as they may be hazardous to health. Do not bend components or alter the insulating distances of drives. Do not touch electronic components or terminals. The variable frequencies are equipped with components that are sensitive to electrostatic energy and may be damaged with improper handling. The use of damaged or destroyed components should be considered a violation of applicable standards. Removal of sealing marks may lead to loss of warranty. Do not remove warning signs from the variable frequency drive.
Electrical Installation
Before any assembly or connection work, discharge the VFD. Ensure that the VFD is fully discharged. Do not touch the terminals, as capacitors may remain charged. Follow the information provided in the operating manual and on the VFD label.
Rules for working on electrical installation:
- Isolate the installation from all possible sources of electrical energy.
- Be cautious when reconnecting and only allow qualified persons to do it.
- Ensure there is no electricity.
- First connect the grounding wires, and then the short circuit.
- Protect from surrounding power sources and define the working area.
When working on the VFD, follow appropriate regulations on accident prevention, applicable standards, regulations governing work on systems with hazardous voltage (e.g., EN 50178), as well as directives for electrical and mechanical equipment.
Follow the installation instructions for the electrical connections provided in the manual, as well as applicable directives. The responsibility for compliance and expertise regarding the limit values for EMC standard EN 61800-3 for variable speed drive systems lies with the manufacturer of the industrial plant or machine. The documentation contains information about EMC.
Cables connected to the VFD must not be subjected to high-voltage insulation testing unless appropriate circuit measures have been previously taken.
Usage Information
The VFD can be connected to a power source every 60 seconds. This should be taken into account when working with the network contactor in Jog mode. For commissioning or after an emergency stop, a one-time direct restart is permissible.
After a power failure and restoration, the motor may start unexpectedly if the automatic start function is enabled. If personnel are at risk, restarting the motor must be prevented by means of external circuits.
Before commissioning and starting operation, ensure that all covers are in good condition and check the terminals.
Maintenance and Service
Unauthorized opening and improper intervention in the operation of variable speed drives can lead to injury or material damage. Repair work on the VFD can only be carried out by the manufacturer or authorized persons. Regularly check the protective equipment. Any repairs must be performed by qualified specialists.
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