Diagnostics Optimization CT MODBUS RTU Technical Data
392
E300 Design Guide
Issue Number: 1
If phase loss or imbalance is detected that would initiate a phase loss trip with sub-trip 0, i.e. Phase Loss.000, then
Phase Loss
(
L20
) is set to one.
Either the motor will be stopped and the drive tripped or the drive will continue to operate normally until the user stops the motor and the drive trips
(see
Action On Trip Detection
(
H45
)). In either case
Phase Loss
(
L20
) is set to one when the phase loss condition is detected and remains set until
the drive trips.
Motor Overload Alarm
(
L21
) is set if the drive output current is higher than the level that will eventually cause a Motor Too Hot trip and the
Motor
Protection Accumulator
(
J26
) is higher than 75.0 %. See
Motor Thermal Time Constant 1
(
B20
) for more details.
Drive Over Temperature Alarm
(
L22
) is set if
Percentage Of Drive Thermal Trip Level
(
J79
) is greater than 90 %.
This gives an indication of whether the elevator motor thermistor has reached the thermal trip threshold. When set to Off (0) the motor thermistor
indicates that the temperature is healthy. When set to On (1) the temperature is not healthy.
L20
Phase Loss
Mode
Open-Loop, RFC-A, RFC-S
Minimum
0
Maximum
1
Default
Units
Type
1 Bit Volatile
Update Rate
Background write
Display Format
Standard
Decimal Places
0
Coding
RO, ND, NC, PT
L21
Motor Overload Alarm
Mode
Open-Loop, RFC-A, RFC-S
Minimum
0
Maximum
1
Default
Units
Type
1 Bit Volatile
Update Rate
Background write
Display Format
Standard
Decimal Places
0
Coding
RO, ND, NC, PT
L22
Drive Over Temperature Alarm
Mode
Open-Loop, RFC-A, RFC-S
Minimum
0
Maximum
1
Default
Units
Type
1 Bit Volatile
Update Rate
Background write
Display Format
Standard
Decimal Places
0
Coding
RO, ND, NC, PT
L23
Motor Thermistor Over Temperature Indication
Mode
Open-Loop, RFC-A, RFC-S
Minimum
0
Maximum
1
Default
Units
Type
1 Bit Volatile
Update Rate
Background write
Display Format
Standard
Decimal Places
0
Coding
RO, ND, NC, PT
L24
Active Alarm
Mode
Open-Loop, RFC-A, RFC-S
Minimum
0
Maximum
12
Default
Units
Type
8 Bit Volatile
Update Rate
Background write
Display Format
Standard
Decimal Places
0
Coding
RO, TE, ND, NC, PT, BU
Содержание 03200106
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