LEESON SCR Thyristor Motor Control - Manual (Page 3)

i SPEEDMASTER™ OPERATION MANUAL
Safety Warnings
• This symbol
ƽ
denotes an important safety tip or
warning. Please read these instructions carefully before
performing any of the procedures contained in this manual.
• DO NOT INSTALL, REMOVE, OR REWIRE THIS
EQUIPMENT WITH POWER APPLIED. Have a qualified
electrical technician install, adjust and service this
equipment. Follow the National Electrical Code and all other
applicable electrical and safety codes, including the
provisions of the Occupational Safety and Health Act
(OSHA), when installing equipment.
• Reduce the chance of an electrical fire, shock, or explosion
by proper grounding, over-current protection, thermal
protection, and enclosure. Follow sound maintenance
procedures.
Warning
It is possible for a drive to run at full speed as a result
of a component failure. Leeson strongly recommends the
installation of a master switch in the main power input to
stop the drive in an emergency.
Circuit potentials are at 115 VAC or 230 VAC above earth
ground. Avoid direct contact with the printed circuit board or
with circuit elements to prevent the risk of serious injury or
fatality. Use a non-metallic screwdriver for adjusting the
calibration trimpots. Use insulated tools if working on this
drive with power applied.
ƽ
SHOCK
HAZARD
AVOID
HEAT
KEE
DR
OID
ATION