COSMOS DRIVER SERIES 3000 - USE AND MAINTENANCE MANUAL
1.7.3
ACC RAMP [Hz/s]
3
Frequency ramps acceleration value
1.7.4
DEC RAMP [Hz/s]
3
Frequency ramps deceleration value
1.7.5
FREQ REF [Hz]
3
It allows you to set the speed reference within a
range from -128,0 to +128,0 Hz.
1.7.6
FREQ OUT [Hz]
-
It displays the voltage frequency actually generated
by the driver.
1.7.7
SPEED [rpm]
-
If present, the encoder displays the motor rotation
speed expressed in revolutions per minute.
1.7.8
DIRECTION
3
Motor rotation direction. This parameter allows you
to adjust the motor rotation direction to the pre-set
reference.
Options=Normal, Inverted.
7.2.11 External brake menu
The external brake menu is present only if the model is equipped with the dynamic brake output.
7.2.11.1 Models for brushless motor and for Sercos II Cosmos
Menu
Entry
Lev
.
Description
1.8
>E-BRAKE
-
This section includes the parameters for the external
brake resistor.
1.8.1
RESISTANCE[Ω]
3
This is the value expressed in ohm of the resistor
connected externally. This parameter is set by the
supplier.
Min=+30Ω, Max=+500Ω
1.8.2
RTH [°C/W]
3
Thermal coefficient of the external resistance. It
represents the temperature increase, expressed in
°C, depending on the power that the resistor must
dissipate, expressed in W.
The best dissipation conditions are possible with low
values of this constant.
This datum is set by the supplier.
Min=+0.1°C/W, Max +10.0°C/W
1.8.3
ENV TEMP [°C]
3
Average ambient temperature at which the external
resistor is situated.
Min=0°C, Max=+500°C
1.8.4
POWER NOM [W]
3
Rated power that can be dissipated by the external
resistor. This datum is set by the supplier.
Min=0W, Max=+20000W
1.8.5
TEMP MAX [°C]
3
Maximum temperature that can be reached by the
external resistor. If this limit is overtaken, the error
“Brake resistance temperature too high” is
displayed. This datum is set by the supplier.
Min=0°C, Max=+350°C
7.2.11.2 Models for asynchronous motor
Menu
Entry
Lev
.
Description
1.8
>E-BRAKE
-
This section includes the parameters for the external
brake resistor.
1.8.1
USE EXT BRAKE
3
This parameter allows you to select the external
brake resistance, in order for the driver to be able to
apply the correct thermal model for measuring the
temperature of the external brake resistance
according to parameters [1.6.2] and [1.6.4].
Ver. 1.07
Pag. 76