CONTREX ML-Drive - Manual (Page 63)

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Alarms
The Control Parameters for Alarms are identical for both the Master and the Follower
modes of operations. By entering values in the Control Parameters for the Alarms, you
can establish circumstances under which the ML-Drive will alert you to potential
operating problems.
Use Alarm Format (CP-10) to establish the circumstances under which the ML-Drive
will alert you to potential operating problems. The alarm can be wired to activate a
warning light, a warning sound, or to shut down the system under specified conditions,
as listed below:
0 = No Alarm 8 = Scaled Error
1 = Low Alarm 9 = Low Alarm or Scaled Error
2 = High Alarm 10 = High Alarm or Scaled Error
3 = Low Alarm or High Alarm 11 = Low Alarm or High Alarm or Scaled Error
4 = Ramped Error 12 = Ramped Error or Scaled Error
5 = Low Alarm or Ramped Error 13 = Low Alarm or Ramped Error or Scaled Error
6 = High Alarm or Ramped Error 14 = High Alarm or Ramped Error or Scaled Error
7 = Low Alarm or High Alarm 15 = Low Alarm or High Alarm or Ramped Error or
or Ramped Error Scaled Error
Alarm Format (CP-10) determines which alarm conditions will activate the Alarm output,
using the values that you enter in Low Alarm (CP-12), High Alarm (CP-13), Ramped
Error Alarm (CP-14) and Scaled Error Alarm (CP-15). In Low Alarm (CP-12), enter the
RPMs at or below which you want the Alarm Output to activate. In High Alarm (CP-13),
enter the RPMs at or above which you want Alarm output to activate. In Ramped Error
Alarm (CP-14) enter the RPM deviation between the ramped setpoint and the feedback
that will activate the Alarm output (at or above). In Scaled Error Alarm (CP-15) enter
the RPM deviation between the scaled setpoint and the feedback that will activate the
Alarm output (at or above).
The ML-Drive comes factory pre-loaded with default Control Parameters for Alarms.
These default parameter values are set for widely generic conditions that generally will
not activate the alarm. This allows you to either operate your system unfettered by the
alarm or design your own alarm conditions that are unique to your system. The factory
default Control Parameters for the Alarms are found in Table 3-23 To modify these
default parameters, refer to Table 3-24. If you are uncertain how to enter a Control
Parameter, review the
Operations: Keypad section, page 3-3.