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CHAPTER 4 - Start-up and adjustment of the drive
4.5.3.3 Acceleration and deceleration ramps
Acceleration and deceleration ramps can be set through the parameters P6,P7,P8 and P9: it
is acceleration and deceleration in both directions, within a range 10ms min
30s max. They
÷
can be enabled globally through the flag F3, Ramp enable, that can be set with the keyboard,
via serial interface or with one of the configurable inputs.
4.5.4 Torque mode or torque analog limit
To drive the convertor directly with a torque signal use the input for current reference
(terminal RIF2, J1/15). This signal, with a voltage range of ±10V, is referred to ØD (J1/9 or
J1/12). The full scale of reference signal depends on the maximum current set with the
parameter P5, I_MAX, that represents a percentage of the drive rated current. After setting
the parameter P5, it is necessary to set the flag F6, Torque reference.
In speed mode, the torque limit (in addition to P5) can be set in an analog way through the
input for the current reference RIF2, previously considered, but with a unipolar signal
+10V. For torque analog limit it is necessary to set the flag F16, Analog current limit,
0V
÷
too.
4.6 Rules for start up
At the moment of installation and start-up of the drive, You will have to observe the following
rules, in this order:
a ) Make sure that all connections have been carried out according to what prescribed: check
that all the terminals are tightened, in particular the power connections. Check that the
resolver cable is connected to connector J4 and to the motor.
b ) Make sure that the four digital inputs (terminals UE,J1/2, RE,J1/3, SE,J1/4, TE,J1/5) have
all been disabled. Set current and speed references, if enabled, to a zero value.
c ) Supply the drive: on the 7-segment display a blinking '0' appears,
while on
the
alphanumerical display, the following words appear: ABB SERVOMOTORS, followed by BRS
223/224 DIG on the first line and by the complete software version and the date on the
second line. The last information is given in this way: VERx.x.x, followed by the month and the
year of introduction. Take down the version number, that will have to be reported in case of
service requests.
d) When starting the machine, the last used parameters (memorized into EEPROM) will be
loaded. lf this is the start-up or if no modifications have been made to configuration and
parameters, the default configuration will appear. In the default configuration, the speed
reference is digital, i.e. it can be set by keyboard or serial interface.
MANIU04.9607 GB 03/97
Page 4.17
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