Install the Hope65 VFD indoors, vertically, on a flame-retardant surface or inside a suitable electrical cabinet. Keep it away from direct sunlight, dust, corrosive gas, flammable gas, oil mist, water vapor, dripping water, salt, conductive particles, and strong vibration.
The normal operating ambient temperature is -10°C to +40°C. From 40°C to 50°C, derate the VFD output capacity by 1% for every 1°C increase. Do not use the VFD above 50°C unless the installation has been reviewed and approved.
If the VFD is installed inside a closed cabinet, the relevant ambient temperature is the air temperature inside the cabinet, not the room temperature. Use a cooling fan, filtered ventilation, or cabinet air conditioner if the internal cabinet temperature can exceed the limit.
Only trained and qualified electrical personnel should install, mount, wire, inspect, or commission the Hope65 VFD.
During installation, all power sources connected to the VFD must be disconnected. If power was previously applied, wait at least 10 minutes before resuming installation or wiring work.
Do not install the VFD on flammable materials. Do not allow screws, cable strands, washers, metal chips, dust, or other conductive objects to fall into the VFD.
This article explains how to select the correct installation site, mount the Hope65 Series Smart AC Drive / VFD correctly, prevent overheating, apply temperature and altitude derating, protect the drive from dust and moisture, verify cabinet ventilation, and complete installation checks before power ON.
Use this guide before installing a new Hope65 drive, replacing a VFD inside a panel, diagnosing repeated overheat faults, preparing a machine panel, installing in a dusty factory area, or commissioning a system at higher altitude or higher temperature.
01 Select SiteChoose an indoor, clean, dry, cool, vibration-controlled location free from corrosive or flammable gas. | 02 Mount CorrectlyInstall vertically using wall mount, cabinet mount, or eligible DIN rail mounting method. | 03 Control HeatCheck airflow, cabinet temperature, fan, filters, derating, and heat-generating accessories. |
| Product Series | Slanvert Hope65 Series Smart AC Drive / VFD |
| Power Range | 0.75 kW to 22 kW Hope65 models |
| Mounting Types | Wall mount, cabinet mount, seamless side-by-side style installation, and DIN rail for eligible models |
| Typical Users | Panel builder, electrical technician, machine OEM, maintenance engineer, automation engineer, service engineer, and commissioning team |
The installation environment directly affects the VFD’s life, thermal performance, nuisance fault rate, and safety. A VFD installed in a hot, dusty, wet, corrosive, or poorly ventilated location may fail early even when wiring and parameters are correct.
Suitable
| Needs Protection
| Avoid
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| Main rule: The VFD is an IP20 electrical device. If the site has dust, moisture, oil mist, dripping water, salt, or accidental touch risk, use a suitable electrical enclosure and cabinet protection design. | ||
| Environment Item | Requirement | Why It Matters |
|---|---|---|
| Site | Indoor installation, free from direct sunlight, dust, corrosive gas, flammable gas, oil mist, water vapor, dripping water, and salt. | Prevents insulation failure, corrosion, short circuit, fire risk, and premature electronic failure. |
| Altitude | Below 1000 m without derating. Apply derating above 1000 m. | Air density decreases with altitude, reducing heat dissipation and insulation margin. |
| Ambient temperature | -10°C to +40°C normal use. Use derating from 40°C to 50°C. | High temperature reduces output capacity and component life. |
| Humidity | Lower than 95% RH with no condensation. | Condensation can cause short circuit, leakage, corrosion, and control-board failure. |
| Vibration | Less than 5.9 m/s² or 0.6 g. | Reduces risk of terminal loosening, solder-joint stress, fan damage, and mechanical failure. |
| Storage temperature | -20°C to +60°C. | Protects internal capacitors, plastic parts, and PCBA from storage damage. |
| IP rating | IP20. | The drive requires an enclosure in environments with touch risk, dust, water, oil mist, or contaminants. |
| Distribution system | TN or TT system. | Ensures compatible grounding and distribution design. |
Temperature is one of the most important factors in VFD reliability. High temperature increases electronic stress, accelerates capacitor aging, increases fan duty, and can cause overheat protection.
≤ 40°C Normal UseUse the VFD within rated condition if all other installation requirements are satisfied. | 40°C~50°C Derated UseDerate output capacity by 1% for every 1°C above 40°C. | > 50°C Do Not UseImprove cabinet cooling or relocate the VFD before operation. |
| Cabinet note: When the VFD is installed inside a cabinet, measure the air temperature inside the cabinet near the VFD. Room temperature alone is not enough. | ||
| Measured Cabinet Temperature | Derating Rule | Example Output Capacity Allowance |
|---|---|---|
| 40°C | No temperature derating required. | 100% of rated output capacity. |
| 45°C | Derate by 5%. | 95% of rated output capacity. |
| 50°C | Derate by 10%. | 90% of rated output capacity. |
| Above 50°C | Not recommended. | Improve cooling before operation. |
When the Hope65 VFD is installed inside a cabinet, the cabinet must remove the heat generated by the VFD, reactor, braking resistor, contactors, transformer, PLC, power supply, and other devices. A cabinet that is closed, dusty, or tightly packed can trap heat and cause overheat faults.
Cool Air In Use filtered lower intake or cabinet cooling path. Prevent dust and oil mist entry. | VFD Vertical Mount Install vertically so natural heat flow and fan cooling direction are not blocked. | Hot Air Out Use upper exhaust, fan, heat exchanger, or air conditioner when heat load is high. |
| Heat-source rule: Keep braking resistors, reactors, transformers, and other heat-generating accessories away from the VFD and away from flammable material. | ||
At higher altitude, cooling performance and insulation margin decrease. Apply derating and additional protection based on installation altitude.
| Installation Altitude | Requirement | Practical Action |
|---|---|---|
| Below 1000 m | Normal installation condition. | No altitude derating required if other requirements are met. |
| 1000 m to 3000 m | Derate capacity by 1% for every 100 m increase above 1000 m. | Calculate derating and confirm motor current remains below allowed VFD output capacity. |
| Above 2000 m | Use input isolation transformer according to manual guidance. | Review panel design before commissioning. |
| 3000 m to 5000 m | Consult technical support for advice. | Do not commission without review. |
| Above 5000 m | Not recommended. | Use alternative design or consult before selection. |
Moisture and contamination are major causes of VFD failure. The Hope65 VFD must not be exposed to condensation, dripping water, salt, oil mist, corrosive gas, flammable gas, or conductive dust.
| Condition | Risk | Protection Method |
|---|---|---|
| Humidity above limit | Leakage current, corrosion, insulation failure. | Use sealed cabinet, heater, dehumidifier, or air conditioner as required. |
| Condensation | Short circuit and control-board damage. | Prevent rapid temperature changes and add cabinet heater if needed. |
| Dust or conductive particles | Short circuit, blocked cooling duct, overheating. | Use filtered enclosure and scheduled cleaning. |
| Oil mist or chemical vapor | Corrosion, insulation damage, fan contamination. | Relocate panel or use protected enclosure with clean-air cooling. |
| Flammable gas | Fire or explosion risk. | Do not install in the area unless the complete system is designed for hazardous location requirements. |
The Hope65 VFD must be installed vertically. Vertical installation supports correct airflow, heat dissipation, wiring access, keypad visibility, and mechanical stability.
✓ CorrectKEYPAD Vertical mounting on wall or inside cabinet. | ✕ WrongSIDE MOUNT Do not install sideways, upside down, or flat unless approved by engineering. | ! Check AirflowCOOL AIR ↑ HOT AIR Do not block inlet, outlet, fan, or side ventilation area. |
| Mounting Method | Allowed Use | Important Note |
|---|---|---|
| Wall mount | Standard mounting method for Hope65 models. | Use actual installation hole positions for the specific model. |
| Cabinet mount | Recommended for industrial panel installations. | Maintain airflow, cooling, cable separation, grounding, and panel protection. |
| DIN rail | Only for models below 7.5 kW except HOPE65GS2 4.0–5.5 kW. | Confirm model eligibility and mechanical retention before wiring. |
| Seamless / side-by-side style installation | Used where model and thermal design allow close mounting. | Confirm cooling and derating. Do not assume close mounting is safe in hot cabinets. |
Use the table below for panel planning. Always confirm the physical drive and latest drawing before drilling, because model grouping and mechanical revisions can vary.
| Model Group | Mounting A mm | Mounting B mm | Height H mm | Width W mm | Depth D mm | Hole / Position mm | Weight kg |
|---|---|---|---|---|---|---|---|
| Hope65G0.75S2B / Hope65G1.5S2B | 62 | 152 | 165 | 78 | 117 | 5.5 | 0.7 |
| Hope65G2.2S2B / Hope65G0.75-P1.5T4B / Hope65G1.5-P2.2T4B / Hope65G2.2-P4T4B | 67.3 | 157.5 | 170.2 | 84.6 | 138.1 | 5.2 | 1 |
| Hope65G4-P5.5T4B / Hope65G5.5-P7.5T4B | 85 | 184 | 194 | 97 | 153.3 | 4.8 | 1.5 |
| Hope65G4S2B / Hope65G5.5S2B / Hope65G7.5-P11T4B / Hope65G11-P15T4B | 106 | 233 | 245 | 124 | 181.3 | 5 | 2.5 |
| Hope65G15-P18.5T4B / Hope65G18.5-P22T4B / Hope65G22-P30T4B | 147 | 298 | 310 | 164.8 | 195.2 | 5.5 | 5.5 |
Complete this checklist after mounting and before power wiring or commissioning.
| No. | Check Item | Pass Condition |
|---|---|---|
| 1 | Installation location | Indoor, clean, dry, and free from direct sunlight, corrosive gas, flammable gas, oil mist, dripping water, and salt. |
| 2 | Mounting surface | Strong, flat, flame-retardant, and mechanically stable. |
| 3 | Mounting direction | VFD installed vertically. |
| 4 | Ambient temperature | Inside cabinet temperature remains within allowed range with derating if above 40°C. |
| 5 | Cooling path | Air inlet, exhaust, fan, and ventilation path are not blocked. |
| 6 | Humidity and condensation | Humidity is below limit and no condensation occurs. |
| 7 | Vibration | No strong vibration source is transmitted to the VFD body or terminals. |
| 8 | Accessories | Input reactor, input filter, output reactor, output filter, and braking resistor are selected and installed correctly if used. |
| 9 | Cable routing plan | Power, motor, control, analog, and communication cables are planned separately. |
| 10 | Foreign objects | No screws, washers, cable strands, metal pieces, or conductive objects remain inside the VFD or cabinet. |
| Mistake | Possible Effect | Correct Action |
|---|---|---|
| Mounting the VFD sideways or upside down | Poor cooling, heat accumulation, reduced reliability. | Install vertically. |
| Installing inside hot sealed cabinet | Overheat fault, reduced output capacity, shorter component life. | Add cabinet fan, filtered ventilation, heat exchanger, or air conditioner. |
| Mounting near braking resistor or reactor | Extra heat exposure and insulation stress. | Keep heat-generating parts away from VFD and flammable materials. |
| Dusty panel without filter | Blocked cooling path, conductive contamination, short circuit risk. | Use filtered enclosure and scheduled cleaning. |
| Moisture or condensation in cabinet | Control board failure, ground leakage, corrosion. | Use cabinet heater, dehumidifier, air conditioner, and sealed enclosure. |
| No derating at high temperature or altitude | Overload, overheat, nuisance trips, reduced service life. | Apply temperature and altitude derating before selecting motor/load rating. |
| Symptom | Possible Installation Cause | Check First |
|---|---|---|
| VFD overheat fault | Cabinet temperature too high, blocked fan, blocked duct, poor spacing, heat source nearby. | Measure internal cabinet temperature and inspect fan/ventilation path. |
| Frequent random faults | Dust, moisture, loose terminals due to vibration, poor grounding, or cable routing. | Inspect cabinet cleanliness, humidity, grounding, and vibration source. |
| Analog speed unstable | Control cable routed with power/motor cable or EMI due to poor cabinet design. | Check cable separation and shielding. |
| RS485 communication fails during motor run | Communication cable exposed to motor cable noise or poor panel grounding. | Separate RS485 cable from U/V/W and improve shielding/grounding. |
| Fan noise or reduced cooling | Dust buildup, high ambient temperature, blocked duct, aging cooling fan. | Clean fan/duct and check cooling fan condition. |
Even after correct installation, the cabinet environment can change over time. Dust can collect, filters can block, fans can weaken, terminals can loosen, and heat-generating devices can raise internal temperature.
To reduce troubleshooting time, share the following information:
Smidnya technical support can help review your cabinet layout, mounting direction, airflow, temperature, derating, altitude, humidity protection, wiring clearance, accessory placement, and pre-power-on installation checklist.