Parameters 277
43.07 Brake chopper
runtime enable
Selects the source for quick brake chopper on/off control.
0 = Brake chopper IGBT pulses are cut off
1 = Normal brake chopper IGBT modulation.
This parameter can be used to program the chopper
control to function only when the supply is missing from a
drive with a regenerative supply unit.
On
Off 0. 0
On 1. 1
Other [bit] Source selection (see Terms and abbreviations on
page 101).
-
43.08 Brake resistor
thermal tc
Defines the thermal time constant of the brake resistor for
overload protection.
0 s
0…10000 s Brake resistor thermal time constant. 1 = 1 s
43.09 Brake resistor Pmax
cont
Defines the maximum continuous braking power of the
resistor (in kW) which will raise the resistor temperature to
the maximum allowed value. The value is used in the
overload protection.
0.00 kW
0.00…10000.00 kW Maximum continuous braking power. 1 = 1 kW
43.10 Brake resistance Defines the resistance value of the brake resistor. The
value is used for brake chopper protection.
0.0 ohm
0.0…1000.0 ohm Brake resistor resistance value. 1 = 1 ohm
43.11 Brake resistor fault
limit
Selects the fault limit for the brake resistor temperature
protection function. When the limit is exceeded, the drive
trips on fault 7183 BR excess temperature.
The value is given in percent of the temperature the
resistor reaches when loaded with the power defined by
parameter 43.09 Brake resistor Pmax cont.
105%
0…150% Brake resistor temperature fault limit. 1 = 1%
43.12 Brake resistor
warning limit
Selects the warning limit for the brake resistor temperature
protection function. When the limit is exceeded, the drive
generates a A793 BR excess temperature warning.
The value is given in percent of the temperature the
resistor reaches when loaded with the power defined by
parameter 43.09 Brake resistor Pmax cont.
95%
0…150% Brake resistor temperature warning limit. 1 = 1%
45
45 Energy efficiency
Settings for the energy saving calculators.
See also section Energy savings calculator (page 90).
45.01 Saved GW hours Displays the energy saved in GWh compared to direct-on-
line motor connection. This parameter is incremented
when 45.02 Saved MW hours rolls over.
This parameter is read-only (see parameter 45.21 Energy
calculations reset).
-
0…65535 GWh Energy savings in GWh. 1 = 1 GWh
No. Name/Value Description Def/
FbEq16
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