Yaskawa CIMR-PU2A0081 — настройки защиты двигателя от перегрузки и перегрева [227/548]

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Yaskawa CIMR-PU2A0004 [227/548] Sets the detection time of motor overheat due to overload this setting rarely requires adjustment but should correlate with the motor overload tolerance protection time for performing a hot start
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L1-02: Motor Overload Protection Time
Sets the detection time of motor overheat due to overload. This setting rarely requires adjustment, but should correlate with
the motor overload tolerance protection time for performing a hot start.
No. Name Setting Range Default
L1-02 Motor Overload Protection Time 0.1 to 5.0 minutes 1.0 minutes
Defaulted to operate with an allowance of 150% overload operation for one minute in a hot start.
Figure 5.66 illustrates an example of the electrothermal protection
operation time using a general-purpose motor operating at
the value of E1-06, Motor Base Speed, with L1-02 set to one minute.
During normal operation, motor overload protection operates in the area between a cold start and a hot start.
Cold start: Motor protection operation time in response to an overload situation that was suddenly reached when starting a
stationary motor.
Hot start: Motor protection operation time in response to an overload situation that occurred during sustained operation at
rated current.
Operation time (minutes)
Cold start
Hot start
Motor current (%)
E2-01 = 100% motor current
10
7
3
1
0.4
0.1
0 100 150 200
Figure 5.66 Motor Protection Operation Time
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Motor Protection Using a Positive Temperature Coefficient (PTC) Thermistor
Connect a motor PTC can to an analog input of the drive for motor overheat protection.
The motor overheat alarm level triggers an oH3 alarm and the drive continues the operation selected in L1-03. The overheat
fault
level
triggers
an
oH4
fault,
outputs
a
fault signal, and the drive stops the motor using the stop method selected in L1-04.
Connect the PTC between terminals AC and A3 and set jumper S4 on the terminal board to “PTC” as shown in Figure 5.67.
Set H3-05 to 0 and H3-06 to E.
Drive
Multi-function input
PTC
thermistor
MA
Fault output
Multi-function
digital outputs
MB
MC
A3 (0-10 V)
AC
M1
M2
PTC
AI
DIP Switch S4
M3
M4
M5
M6
Figure 5.67 Connection of a Motor PTC
5.8 L: Protection Functions
YASKAWA SIEP YAIP1U 01A AC Drive - P1000 Technical Manual
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Parameter Details

Содержание

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Узнайте о настройках времени защиты двигателя от перегрузки и перегрева. Оптимизация работы и безопасность вашего оборудования с помощью правильных параметров.