Installation
2-2 Manual # 42-02-1P21
Safety Precautions
Certain fundamental warnings must be kept in mind at all times to help avoid severe personal
injury or equipment damage.
Personal Safety
• Motion 2000 Controllers should only be installed by qualified, licensed, trained elevator
personnel familiar with the operation of microprocessor-based elevator controls.
• Verify that all safety devices (limits, hoistway locks, car gate, etc.) are fully functional
before attempting to run the elevator. Never operate Motion 2000 controls with any safety
device inoperative.
• The user is responsible for complying with the current National Electrical Code with
respect to the overall installation of equipment and for proper sizing of electrical conduc-
tors connected to the controls.
• The user is responsible for understanding and applying all current local, state, provincial,
and federal codes that govern practices such as controller placement, applicability, wiring
protection, disconnections, over current protection, and grounding procedures.
• Controller equipment is at line voltage when AC power is connected.
• After AC power has been removed, internal capacitors can remain charged for up to 5 min-
utes. Wait at least 5 minutes after power down before touching any internal components.
• To prevent the risk of shock, all equipment should be securely grounded to earth ground
with a minimum of #8 AWG wire as outlined in the National Electrical Code. Failure to
obtain an actual earth ground may result in electrical shock to personnel and/or improper
operation of the equipment.
• When using test equipment (oscilloscopes, etc.) with a power cord that electrically ties
probe common to earth ground, an isolation transformer should be used to isolate the
instrument common from earth ground.
• Remain clear of all rotating equipment while working on the controls.
Equipment Safety
• All equipment should be securely grounded to earth ground with a minimum of #8 AWG
wire as outlined in the National Electrical Code. Failure to obtain a true earth ground may
result in electrical shock. Improper grounding is the most common cause of electrical
component failure and noise-induced problems.
• Replace components only with main line power off. Damage to equipment or unexpected
operation of the elevator may occur if this precaution is not observed.
• Substitution of parts or unauthorized modifications should not be attempted before first
contacting Motion Control Engineering to ensure all safety features are maintained. MCE
will not be held responsible for circuit modifications made in the field unless they are
approved in writing by MCE.
• Circuit boards believed to be defective must be sent to MCE for repair and testing. Field
repair may leave the board with undetected problems.
• Care should be taken when using test leads and jumpers to avoid shorting high voltage or
ground to low voltage microprocessor circuits.
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