LEESON SCR Thyristor Motor Control - Manual (Page 16)

10 SPEEDMASTER™ OPERATION MANUAL
Chassis (uncased) drive installation
Mounting
• Drive components are sensitive to electrostatic fields. Avoid
contact with the circuit board directly. Hold drive by the
chassis only.
• Protect the drive from dirt, moisture, and accidental contact.
• Provide sufficient room for access to the terminal block and
calibration trimpots.
• Mount the drive away from other heat sources. Operate the
drive within the specified ambient operating temperature
range.
• Prevent loose connections by avoiding excessive vibration
of the drive.
• Mount drive with its board in either a horizontal or vertical
plane. Six 0.19 in. (5 mm) wide slots in the chassis accept
#8 pan head screws. Fasten either the large base or the
narrow flange of the chassis to the subplate.
• The chassis does not have to be earth grounded. If you
choose to ground the chassis, use a star washer beneath
the head of at least one of the mounting screws to
penetrate the anodized chassis surface and to reach bare
metal.
Installation