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Application Safety
When applying a motor drive in a manufacturing process, one must understand that the
motor drive merely provides the energy for a motor to turn and it will do so without
regard upon activation and command. There could be failure modes in any external
interface equipment and/or the Focus drive itself that could cause the motor to turn
suddenly at any speed or cause it to fail to stop on command without warning. When
considering Operator safety the Installer must include and employ additional
equipment to provide safeguards to insure Operator safety.
Consult all NEC and OSHA machine safety recommendations and guidelines.
These safeguards are the sole responsibility of the Installer. For these reasons, the
Installer must envision all, implement all and test or simulate all failure methods. The
Installer is responsible for his/her resulting implementation to insure safe and reliable
operation of the installation.
In addition, the Installer should provide the End User of his Installed system with a
System User’s Manual and instruct the User/Operator on correct/safe operation.
Instruction should include the demonstration and purpose of safety features that you the
Installer has included and the importance of periodic testing to insure they do indeed
operate as designed. The Installer should instruct, inform and warn his End User
customer against bypassing the safety permissives the Installer has provided.
NOTE: Without the use of the Contactor option, P/N 2400-9001 (or the Reversing
Contactor option, P/N 2400-9002, if reverse is required) potential motor movement in the
event of a power line disturbance (causing an SCR (power device) to misfire) can occur
since the motor is connected directly to the power circuit even when the drive is
disabled. It is highly recommended that one of these contactor kits be used to guard
against such occurrences.
When making any wiring or jumper changes, the incoming AC power must be turned of
and locked out. Hazardous voltages will be present until the AC power is turned off. The
drive contactor ( if used ) does not remove hazardous voltages when opened.
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