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Trip
OHt dc bus
Value
27
Short description
This trip indicates a DC bus component over temperature based on a firmware thermal model. The drive includes a thermal protection system to protect the DC bus
components within the drive. This includes the effects of the output current and DC bus ripple. The estimated temperature is displayed as a percentage of the trip
level in
Percentage Of d.c. Link Thermal Trip Level
(07.035). If this parameter reaches 100% then an
OHt dc bus
trip with sub-trip 200 is initiated. The drive will
attempt to stop the motor before tripping. If the motor does not stop in 10 seconds then the drive trips immediately.
Source
xx
y
zz
Control
system
00
2
00: D.c. link thermal model gives {OHt dc bus} trip with sub-trip 0.
It is also possible in a multi-power module system for d.c. link over-temperature to be detected from within the power stage. From this source the estimated
temperature as a percentage of trip is not available and the trip is indicated as follows:
Source
xx
y
zz
Control
system
01
0
00: Power stage gives {OHt dc bus} trip with sub-trip 0.
Recommended actions:
Check the AC supply voltage balance and levels.
Check the DC bus ripple level.
Reduce duty cycle.
Reduce motor load.
Check output current stability. If unstable;
Check the motor map settings with motor nameplate (
Rated Frequency
(05.006),
Rated Current
(05.007),
Rated Speed
(05.008),
Rated Voltage
(05.009),
Rated Power Factor
(05.010) and
Number Of Motor Poles
(05.011)) - (All modes).
Disable slip compensation (
Enable Slip Compensation
(05.027) = Off (0)) - (Open-loop).
Disable dynamic V to F operation (
Dynamic V To F Select
(05.013) = Off (0)) - (Open-loop).
Select fixed boost (
Open-loop Control Mode
(05.014) = Fixed (2)) - (Open-loop).
Select high stability space vector modulation (
High Stability Space Vector Modulation
(05.019) = On (1)) - (Open-loop).
Disconnect the load and complete a rotating auto-tune (
Auto-tune
(05.012) = 2) - (RFC-A and RFC-S).
Auto-tune the rated speed value (
Rated Speed Optimisation Select
(05.016) = 1) - (RFC-A and RFC-S).
Reduce speed loop gains (
Speed Controller Proportional Gain Kp1
(03.010),
Speed Controller Integral Gain Ki1
(03.011) and
Speed Controller Differential Feedback Gain Kd1
(03.012)) - (RFC-A and RFC-S).
Add a speed feedback filter value (
P1 Feedback Filter
(03.042)) - (RFC-A and RFC-S).
Add a current demand filter (
Current Reference Filter 1 Time Constant
(04.012)) - (RFC-A and RFC-S).
Check encoder signals for noise with an oscilloscope - (RFC-A and RFC-S).
Check encoder mechanical coupling - (RFC-A and RFC-S).
Trip
OHt Inverter
Value
21
Short description
This trip indicates that an IGBT junction over-temperature has been detected based on a firmware thermal model. The sub-trip indicates which model has initiated
the trip in the form xxyzz as given below.
Source
xx
y
zz
Control
system
00
1
00: Inverter thermal model
Control
system
00
3
00: Braking IGBT thermal model
Recommended actions with sub-trip 100:
Reduce the selected drive switching frequency.
Ensure
Auto-switching Frequency Change
(05.035) is set to Off.
Reduce duty cycle.
Decrease acceleration / deceleration rates.
Reduce motor load.
Check DC bus ripple.
Ensure all three input phases are present and balanced.
Recommended actions with sub-trip 300:
Reduce the braking load.
Trip
OHt Power
Value
22
Short description
Powerdrive F300 Parameter Reference Guide
Issue: 01.15.00
313
Содержание Powerdrive F300
Страница 1: ...Parameter Reference Guide Powerdrive F300 Open Loop Mode Issue 01 15 00 ...
Страница 20: ...Menu 1 Frequency References Mode Open Loop 20 Powerdrive F300 Parameter Reference Guide Issue 01 15 00 ...
Страница 21: ...Powerdrive F300 Parameter Reference Guide Issue 01 15 00 21 ...
Страница 36: ...Menu 2 Frequency Ramps Mode Open Loop 36 Powerdrive F300 Parameter Reference Guide Issue 01 15 00 ...
Страница 108: ...Menu 7 Single Line Descriptions Analog I O Mode Open Loop 108 Powerdrive F300 Parameter Reference Guide Issue 01 15 00 ...
Страница 112: ...112 Powerdrive F300 Parameter Reference Guide Issue 01 15 00 ...
Страница 144: ...144 Powerdrive F300 Parameter Reference Guide Issue 01 15 00 ...
Страница 168: ...Menu 10 Status and Trips Mode Open Loop 168 Powerdrive F300 Parameter Reference Guide Issue 01 15 00 ...
Страница 231: ...Powerdrive F300 Parameter Reference Guide Issue 01 15 00 231 ...
Страница 232: ...232 Powerdrive F300 Parameter Reference Guide Issue 01 15 00 ...