Allen-Bradley SMC-50, User Manual

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80 Rockwell Automation Publication 1560F-UM001A-EN-P - June 2019
Chapter 3 Commissioning Procedure
12. Open the switch SW2 on the interface board (see Figure 37 ) before
returning the unit to service. Ensure the red LED is off.
13. Check that all plugs and connectors are secure. Retrieve all hardware and
tools from the equipment. Replace and secure any barriers removed during
servicing and close all doors before applying power.
Control Function Tests
1. Apply rated control voltage to the control circuit.
2. Using the control schematic, apply control signals to cause relays and
contactors to energize, to verify operation.
3. Remove any jumpers used in the test and restore all circuits to normal
when finished.
Resistance Checks
To ensure that resistors and connections have not been damaged during shipment
and installation, the following resistance tests should be performed before
energizing the starter.
1. Remove all power from the equipment.
2. Measure DC resistance per the following chart:
ATTENTION: If the SW2 switch is not in the open position when the SMC is
energized, the motor will start in an uncontrolled manner and may cause severe
damage.
ATTENTION:
Servicing energized industrial control equipment can be
hazardous. Severe injury or death can result from electrical shock, burn, or
unintended actuation of controlled equipment. Recommended practice is to
disconnect and lock out control equipment from power sources, and allow any
stored energy in capacitors to dissipate. The safety related work practices of
NFPA 70E, Electrical Safety Requirements for Employee Workplaces, must be
followed if it is necessary to work in the vicinity of energized equipment.
ATTENTION:
Verify that all circuits are voltage free using a hot stick or
appropriate voltage measuring device. Severe injury or death can result
from electrical shock, burn, or unintended actuation of controlled
equipment.