Frequency Inverter ST600 Series High-Performance Multifunction VFD Precautions for Quick
Application
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2. Check whether ambient temperature of the VFD during actual application is below -10°C, if yes,
install a heating facility.
Note: For a cabinet-type VFD, its ambient temperature is the air temperature inside the cabinet.
3. Check whether the altitude of the application site exceeds 1000m. When the installation site altitude
exceeds 1000m, derate 1% for every increase of 100m; when the installation site altitude exceeds
3000m, consult the local Sourcetronic seller or office.
4. Check whether the humidity of the application site exceeds 90%, if yes, check whether condensation
occurred, if condensation does exist, take additional protective measures.
5. Check whether there is direct sunlight or the possibility of animal intrusion at the application site, if
yes, take additional protective measures.
6. Check whether there is dust, explosive or combustible gases at the application site, if yes, take
additional protective measures.
2.5 Installation confirmation
After the VFD is installed properly, check the installation condition of the VFD.
1. Check whether the input power cable and current-carrying capacity of the motor cable fulfill actual
load requirements.
2. Check whether peripheral accessories (including input reactors, input filters, output reactors, output
filters, DC reactors, brake units and brake resistors) of the VFD are all of the correct type and installed
properly; check whether the installation cables fulfill the requirements on current-carrying capacity.
3. Check whether the VFD is installed on fire-retardant materials; check whether the hot parts (reactors,
brake resistors, etc.) are kept away from combustible materials.
4. Check whether all the control cables are routed separately from power cables based on EMC
requirement.
5. Check whether all the grounding systems are grounded properly according to VFD requirements.
6. Check whether installation spacing of the VFD complies with the requirements in the operation
manual.
7. Check whether installation mode of the VFD complies with the requirements in the operation manual.
Vertical installation should be adopted whenever possible.
8. Check whether external connecting terminals of the VFD are firm and tight enough, and whether the
moment is up to the requirement.
9. Check whether there are redundant screws, cables or other conductive objects inside the VFD, if
yes, take them out.
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