Minimum acceptable level, below which current is considered to be zero
for motor not running alarm (as percentage of nominal)
Used by the phase ordering algorithm to set the loading threshold. If the
ratio of actual current to nominal current is more than the value of the
Load threshold (in %) then the motor is considered to be working under
load and the appropriate phase ordering selected. Otherwise, the motor
is assumed to be unloaded.
The number of data acquisition iterations required for a LEARN period. A
value between 3000 – 4000 is recommended.
The number of data acquisition iterations required for the IMPROVE
phase. A value between 8000 – 10000 is recommended.
The number of data acquisition iterations required for an UPDATE phase.
A value between 1000 - 2000 is recommended.
eMCM does not update the flash with new values at each iteration, as
this could shorten the flash lifetime. On the other hand, the longer data
are stored in volatile memory, the greater the potential for data loss if
power fails. As a compromise, the user can set a suitable time (measured
in complete iterations) after which all outstanding data are automatically
saved to flash.
When this setting is on, passwords have to be supplied in order to start or
quit a Check Motor or Monitor mode. Its purpose is to prevent any
unauthorized tampering with eMCM. Remote commands over the serial
line are unaffected.
Set the fault level for activating the output relay in MONITOR mode. If
set, the relay is triggered by a change from a lower to a higher fault level
any time the level is equal to or above the set level.
When obtaining data, eMCM requires relatively unchanging current
signals. If the variation in the amplitude of the current exceeds this
threshold, MCM will reject the data. The alarm UNSTABLE LINE is often
seen when the current stability is set too low.
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