Applied Motion BLuDC4-Q - Manual (Page 27)

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Mounting the Drive
BLUDC4-Q and BLUDC4-S
These compact, low cost drives consist of a single printed circuit board with a mounting hole in
each corner. We include four plastic spacers with the drive. These spacers snap into the holes in
the BLU100 drive and can be secured to a panel with #6-32 self tapping screws. The hole pattern
and drive outline are shown on page 28.
BLUDC4-SE & -QE
These drives have two pc boards fixed together. Plastic mounting feet which accept #4-40 screws
are built-in. The hole pattern and drive outline are shown on page 28.
BLUDC9 (all models)
These drives can be mounted on the narrow (1.48 x 5.35) side or the wide (2.9 x 5.35) side. Either
way, you’ll need two #6 screws to secure the drive using the 0.17” mounting slots. The hole pattern
and drive outline are shown on page 28
• Never use your drive in a space where there is no air flow or where other devices
cause the surrounding air to be more than 40°C.
• Never put the drive where it can get wet or where metal particles can get on it.
• Always provide air flow around the drive. The BLUDC4 can only eliminate excess
heat by convection , so make sure it has air flow above and below the circuit
board.
Other People's Motors
If you want to use a motor other than those recommended here, it must be a three phase motor with
120° commutation timing. The motor must also have an incremental encoder (index signal is not
required) with no fewer than 100 lines and no greater than 12,500 lines. The halls and encoder
must operate from +5VDC, 200 mA max (supplied by the BLU drive). The hall signals may be
single-ended or differential. We strongly recommend that the encoder have differential line driver
outputs, but single-ended may be acceptable if you use a shielded cable.
The BLU servo drives feature sine commutation, which makes motors run more smoothly than
trapezoidal drives.
If you choose a low cost motor with internal hall effect devices instead of a
quality motor with precision commutation tracks on the encoder disk, your performance may suffer.