Filter
Top Products
4 Rockwell Automation Publication 150-QS003D-EN-P - November 2013
Chapter 1 Introduction
General Precautions
WARNING:
• Only personnel familiar with the controller and associated machinery should
plan or implement the installation, startup, and subsequent maintenance of
the system. Failure to do this may result in personal injury and/or equipment
damage.
• Hazardous voltage is present in the motor circuit even when the SMC-50
controller is off. To avoid shock hazard, disconnect the main power before
working on the controller, motor, and control devices such as Start-Stop push
buttons. Procedures that require parts of the equipment to be energized
during troubleshooting, testing, etc., must be performed by properly qualified
personnel, using appropriate local safety work practices and precautionary
measures.
• Failure of solid-state power switching components can cause overheating
due to a single-phase condition in the motor. To prevent injury or equipment
damage, the use of an isolation contactor or shunt trip type circuit breaker on
the line side of the SMC is recommended. This device should be capable of
interrupting the motor’s lock rotor current.
• Hazardous voltages that can cause shock, burn, or death are present on L1,
L2, L3,T1, T2, and T3. Power terminal covers for units rated 90…180 Amps
can be installed to prevent inadvertent contact with terminals. Disconnect
the main power before servicing the motor controller, motor, or associated
wiring.
ATTENTION:
• Static control precautions are required when installing, testing, servicing, or
repairing the assembly. The controller contains electrostatic discharge
sensitive parts and assemblies. Component damage may result if ESD control
procedures are not followed. If you are not familiar with static control
procedures, See applicable ESD protection handbooks.
• Stopping modes, such as braking, are not intended to be used as an
emergency stop. The user is responsible for determining which stopping
mode is best suited to the application. See the applicable standards for
emergency stop requirements.
• Pump and linear deceleration stopping modes may cause motor heating.
Depending upon the mechanical dynamics of the system, select the lowest
stopping time setting that will satisfactorily stop the motor.
• Slow speed running is not intended for continuous operation. This is due to
reduced motor cooling.
• Two peripheral devices can be connected to the direct programming interface
(DPI) port located in the control module. The maximum output current through
the DPI port is 560 mA.
NOTE: A HIM located in the control module HIM port/bezel (See Figure 12
)
also draws power from the DPI port.
• Disconnect the controller from the power source when installing or
inspecting protective modules. The protective module should be inspected
periodically for damage or discoloration. Replace module if it is damaged or
the clear sealant or MOV are discolored.