Rockwell Automation Publication 1560F-UM001A-EN-P - June 2019 209
Parameter Information Appendix A
125 THD I A Dly Secs 0.1/99 0.1 The time period that the average THD on the phase current
exceeds the THD I A Lvl to signal an alarm. The THD I bit in the
Motor Alarm En parameter must be set to signal an alarm.
R/W
126 PM Hours Hrs 1/10000 10000 This is a counter the user can set to generate an alarm or fault to
signal a need for preventive maintenance. The Hours to PM
parameter is initialized to this value and counts down when the
motor is running.
R/W
127 PM Starts 1/50000 100 This is a counter the user can set to generate an alarm or fault to
signal a need for preventive maintenance. The Starts to PM
parameter is initialized to this value and counts down each time
the motor is started.
R/W
128 Starts per Hour 1/10 10 The user can program the maximum number of starts within a
sliding one-hour window. Once the number of starts per hour is
reached any additional starts will cause a fault.
R/W
129 Freq High F Lvl Hz 45/66 63 The highest line voltage frequency that can be applied to the
SMC-50 before causing a Freq High F Lvl fault. The Freq High bit
in the Starter Fault En parameter must be set to signal a fault.
R/W
130 Freq Low F Lvl Hz 45/66 47 The lowest line voltage frequency that can be applied to the
SMC-50 before causing a Freq Low F Lvl fault.The Freq Low bit in
the Starter Fault En parameter must be set to signal a fault.
R/W
131 Freq High A Lvl Hz 45/66 63 The highest line voltage frequency that can be applied to the
SMC-50 before causing a Freq High F Lvl alarm. The Freq High
bit in the Starter Alarm parameter must be set to signal an
alarm.
R/W
132 Freq Low A Lvl Hz 45/66 47 The lowest line voltage frequency that can be applied to the
SMC-50 before causing a Freq Low F Lvl alarm. The Freq Low bit
in the Starter Alarm parameter must be set to signal an alarm.
R/W
133 Restart Attempts 0/5 0 Allows the user to enable the SMC-50 to auto-restart for up-to
five attempts after a thyristor has failed to fire and results in an
open gate fault trip.
R/W
134 Restart Dly Secs 0/60 0 Provides a delay time prior to the SMC-50’s attempt to restart
the motor after a fault.
R/W
135 Starts Restart En Bit Value 0/1 0
Future
Volt Unbal
Overvoltage
Undervoltage
Phase Rev
Line Loss
Open Gate
Config Change
Freq
THD V
Future
Allows the user to select which type of fault that the SMC-50
can try to restart from once the restart delay period has expired.
To enable a restart from a fault, the function must be selected
(1). Restart Attempts, Parameter 133, and Restart Delay,
Parameter 134, must be configured.
R/W
Table 66 - SMC -50 Parameter List (Continued)
Number Name Unit Min/Max Default Enum Text Description R/W
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