192 Rockwell Automation Publication 1560F-UM001A-EN-P - June 2019
Chapter 10 Maintenance
PM Starts Protection—Fault and Alarm
PM Starts Fault (Code 51) and Alarm
You can configure the SMC-50 control module to provide a Fault and/or Alarm
to indicate that PM should be performed after a pre-defined number of starts
have occurred, Fault Code 51. Do this by using the PM Starts, Parameter 127,
Starts to PM, Parameter 22, and Meter Reset, Parameter 16.
The Starts to PM parameter indicates the number of starts before preventive
maintenance needs to be performed. This value counts down by one for each
start initiated, even if the start is not completed. When the Starts to PM value
reaches zero, the configured Fault and/or Alarm condition activates and the
counter stops counting.
After the preventive maintenance is complete, you can reset the Fault and/or
Alarm. You must reload the Starts to PM to the value configured and stored in
the PM Starts parameter through the Meter Reset, Parameter 16 via a HIM or
network communications.
The PM Starts Alarm function is enabled using the PM Starts bit in the Motor
Fault Enable, Parameter 230. The Alarm is enabled using the PM Starts bit in the
Motor Alarm Enable, Parameter 231.
Table 65 - Starts Protection Parameter List
Safety and Preventative
Maintenance
The Maintenance Technician should become familiar with the layout and be
aware of the basic system parameters. Only qualified technicians should be
allowed to work with this equipment under competent supervision.
General housekeeping is the key to maintaining power electronic and electrical
equipment. They are to be kept as dust free as possible. A scheduled program of
inspection will reduce the possibility of problems.
Parameter
Number
Parameter Name
(1)
(1) As displayed on the HIM or Connected Components Workbench configuration tools.
Minimum/Maximum
Value
Default
Value
Access Units
127 PM Starts 1…50000 100 R/W
22 Starts to PM 0…50000 0 R
16 Meter Reset
Ready, Elapsed Time, Energy,
Time to PM, Starts to PM
Ready R/W
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
disconnnect and lock out control equipment from power sources, and allow any
stored energy in capacitors to dissipate. If it is necessary to work in the vicinity
of energized equipment, the safety related work practices of NFPA 70E,
Electrical Safety Requirements for Employee Workplaces, must be followed.
To Next Page
Loading...
Need help?
General
