![Emerson unidrive m200 Скачать руководство пользователя страница 59](http://html.mh-extra.com/html/emerson/unidrive-m200/unidrive-m200_parameter-reference-manual_102553059.webp)
2.
Motor Rated Current
(05.007) is modified when
Select Motor 2 Parameters
(11.045) = 0, or
M2 Motor Rated Current
(21.007) is modified when
Select Motor 2 Parameters
(11.045) = 1.
Motor Protection Accumulator Warning
If Percentage Losses > 100% then eventually the
Motor Protection Accumulator
(04.019) will reach 100% causing the drive to trip or the current limits to
be reduced. If this is the case and
Motor Protection Accumulator
(04.019) > 75.00% then a Motor Overload alarm indication is given and
Motor Overload Alarm
(10.017) is set to one.
Parameter
04.016
Thermal Protection Mode
Short description
Set to the require thermal protection mode
Mode
Open
‑
loop
Minimum
0
(Display: 00)
Maximum
3
(Display: 11)
Default
0
(Display: 00)
Units
Type
8 Bit User Save
Update Rate
Background read
Display Format
Binary
Decimal Places
0
Coding
RW
Thermal Protection Mode
(04.016) defines the action taken by the drive when
Motor Protection Accumulator
(04.019) reaches 100% and/or the drive
thermal monitoring parameters approach their trip levels. The bits in Thermal
Thermal Protection Mode
(04.016) are defined as follows:
Bit Function
0
0 =
Motor Too Hot
trip is initiated when
Motor Protection Accumulator
(04.019) reaches 100%
1 =
Motor Too Hot
trip is disabled and current limiting on motor overload is active as described below
1
0 = Drive thermal monitoring current limiting is disabled
1 = Drive thermal monitoring current limiting is described is active
Because of the limited number of segments on drives with an LED display, these drives will indicate the parameter value as a decimal value rather than
a binary value.
The required current limit is derived from the current limit parameters (
Motoring Current Limit
(04.005) to
Symmetrical Current Limit
(04.007) or 21.027
to 21.029) depending on the set-up and conditions. The current limit can be further limited by current limit on motor overload and/or drive temperature
monitoring as shown below to give the
Final Current Limit
(04.018).
Current limiting on motor overload
When the
Motor Protection Accumulator
(04.019) reaches 100.0% the current limit is limited to (K - 0.05) x 100.0%. This limitation is removed when the
Motor Protection Accumulator
(04.019) falls below 95.0%.
Drive thermal monitoring current limiting
If any of the drive temperature monitoring parameters (
Stack Temperature
(07.004) and
Auxiliary Temperature
(07.005)) are above their trip threshold
minus 10°C the one that is closest to its trip threshold is used to modify the current limits as follows:
Final Current Limit
(04.018) = Current limit x (Trip threshold - T) / (Trip threshold - 10°C)
where T is the drive temperature monitoring parameter value.
If the
Percentage Of Drive Thermal Trip Level
(07.036) is above 90% then the final current limit is modified as follows:
Final Current Limit
(04.018) = Current limit x (100% -
Percentage Of Drive Thermal Trip Level
(07.036)) / 10%
If both of the above attempt to reduce the final current limit the lowest calculated value of current limit is used. This system has the effect of reducing the
current limit to zero at the point where the drive should be tripped because its thermal monitoring has reached a trip threshold. This is intended to limit
the load on the drive to prevent it from tripping when supplying a load that increases with frequency and does not include rapid transients (i.e. a fan).
Unidrive M200 Parameter Reference Guide
Issue: 01.05.00.10
59
Содержание unidrive m200
Страница 1: ...Parameter Reference Guide Unidrive M200 Open loop Mode Issue 01 05 00 10 ...
Страница 29: ...Menu 2 Frequency Ramps Mode Open loop Unidrive M200 Parameter Reference Guide Issue 01 05 00 10 29 ...
Страница 30: ...30 Unidrive M200 Parameter Reference Guide Issue 01 05 00 10 ...
Страница 83: ...Enable logic Unidrive M200 Parameter Reference Guide Issue 01 05 00 10 83 ...
Страница 100: ...Menu 7 Analog I O Mode Open loop 100 Unidrive M200 Parameter Reference Guide Issue 01 05 00 10 ...
Страница 113: ...Menu 8 Digital I O Mode Open loop Unidrive M200 Parameter Reference Guide Issue 01 05 00 10 113 ...
Страница 125: ...Unidrive M200 Parameter Reference Guide Issue 01 05 00 10 125 ...
Страница 144: ...Menu 10 Status and Trips Mode Open loop 144 Unidrive M200 Parameter Reference Guide Issue 01 05 00 10 ...
Страница 145: ...Unidrive M200 Parameter Reference Guide Issue 01 05 00 10 145 ...
Страница 204: ...204 Unidrive M200 Parameter Reference Guide Issue 01 05 00 10 ...