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3.2.2 Mounting and cooling the MicroFlex e100
Ensure you have read and understood the Mechanical installation and location requirements in section 3.2. Mount the MicroFlex e100 vertically on its rear side, the side opposite the front panel. M5 bolts or screws should be used to mount the MicroFlex e100. Detailed dimensions are shown in section 3.2.1.
For effective cooling, the MicroFlex e100 must be mounted upright on a smooth vertical metal surface. The MicroFlex e100 is designed to operate in an ambient temperature of 0°C to 45°C (32°F to 113°F). Output current must be derated between 45°C (113°F) and the absolute maximum ambient temperature of 55°C (131°F). Within the ambient temperature range:
The 3A model is designed to operate without any additional cooling methods.
The 6A and 9A models require a forced air flow, passing vertically from the bottom to the top of the MicroFlex e100 case, to allow full rated current at 45°C (113°F).
Temperature derating characteristics are shown in sections 3.2.3 to 3.2.5.
Note: Failure to meet cooling air flow requirements will result in reduced product lifetime and/or drive overtemperature trips. It is recommended to check periodically the operation of the cooling equipment. Optional fan tray
3.2.2.1Effects of mounting surface and proximity
The proximity of the MicroFlex e100 to other components could affect cooling efficiency. If the MicroFlex e100 is mounted beside another MicroFlex e100 (or other obstruction), there should be a minimum space of 15mm to maintain effective cooling.
If the MicroFlex e100 is mounted above or below another MicroFlex e100 (or other obstruction), there should be a minimum space of 90mm to maintain effective cooling. Remember that when a MicroFlex e100 is mounted above another MicroFlex e100 or heat source, it will be receiving air that has been already heated by the device(s) below it. Multiple MicroFlex e100 units mounted above each other should be aligned, not offset, to promote air flow across the heatsinks.
The derating characteristics assume the MicroFlex e100 is mounted on 3mm thick (or less) metal plate. If the MicroFlex e100 is mounted on 10mm plate then the current characteristics shown in sections 3.2.3 to 3.2.5 may be increased by up to 7% if there is no forced air cooling, or 15% if forced air cooling is present.
It is recommended to allow approximately 60mm at the front to accommodate wiring and connectors.
Metal backplane
Hot
15mm
| 90mm | Warm |
|
| |
|
| 15mm |
Forced air flow |
| Cool |
FanFan
Figure 2 - Cooling and proximity
MN1942 | Basic Installation |
