Baldor mn1854 manual Section Receiving and Installation, Receiving & Inspection, Power Dissipation

Section 3

Receiving and Installation

Receiving & Inspection

Baldor Drivers are thoroughly tested at the factory and carefully packaged for shipment. When you receive your driver, there are several things you should do immediately.

1.Observe the condition of the shipping container and report any damage immediately to the commercial carrier that delivered your driver.

2.Remove the driver from the shipping container and remove all packing materials. The container and packing materials may be retained for future shipment.

3.Verify that the part number you received is the same as the part number listed on your purchase order.

4.Inspect for external physical damage that may have been sustained during shipment and report any damage immediately to the commercial carrier that delivered your driver.

5.If the driver is to be stored for several weeks before use, be sure that it is stored in a location that conforms to published storage humidity and temperature specifications stated in this manual.

Location Considerations The location of the driver is important. Installation should be in an area that is protected from direct sunlight, corrosives, harmful gases or liquids, dust, metallic particles, and vibration. Exposure to these can reduce the operating life and degrade performance of the driver.

Several other factors should be carefully evaluated when selecting a location for installation:

1.For effective cooling and maintenance, the driver should be mounted on a smooth, non-flammable vertical surface.

2.At least 3 inches (75mm) top and bottom clearance must be provided for air flow. Between drivers (each side), allow at least 0.1 inch (2.5mm).

3.Altitude derating. Up to 3300 feet (1000 meters) no derating required. Derate the continuous and peak output current by 1.1% for each 330 (100) above 3300 feet. Maximum altitude is 8300 (2540m).

4.Temperature derating. From 0° C to 40° C ambient no derating required. Above 40° C, derate the continuous and peak output current by 2.5% per ° C above 40° C. Maximum ambient is 50° C.

Power Dissipation

Cooling requirements can be determined if you know the maximum (or continuous) current output from the microstepping driver, ID. Calculate heat dissipation, WDiss as follows:

WDiss = 5 + 3.4ID +0.15ID2

Mechanical Installation

Mount the driver to the mounting surface. The driver must be securely fastened to the mounting surface by the driver mounting holes. The location of the mounting holes is shown in Section 8 of this manual. Use #8 (M4) cap screws.

MN1854 Receiving & Installation 3-1