Control Techniques Commander SE Advanced User's Manual page 81

Trip Code
cL
SCL
EEF
PH
rS
trxx
F.bus
C.Err
C.dat
C.Acc
C.rtg
O.Ld2
O.cL††
* The Enable/Reset terminal will not reset an O.Ld1 trip. Use the Stop/Reset key.
** These trips cannot be reset for 10 seconds.
Commander SE Size 4 temperature exceeds
†
See information under terminal 5 in section 4.2 Control terminal connections.
††
The UU trip is only stored in the drive's trip log if the drive trips on UU while running.
10.30
0.0 ~ 400.0
This parameter defines the time period that the braking resistor fitted can stand full braking volts (780V or 390V) without
damage. The setting of this parameter is used in determining the braking overload trip time.
10.31
0.0 ~ 25.0
This parameter defines the time period which must elapse between consecutive braking periods of maximum braking power
as defined by parameter 10.30. The setting of this parameter is used in determining the thermal time constant of the resistor
fitted. If this parameter is set to 0 then no braking resistor protection is implemented.
Braking resistor protection
The characteristics of a braking resistor are that its temperature rises in proportion to the amount of power being put into it,
and falls in proportion to the temperature difference between itself and ambient. This is an exponential characteristic which
the drive models to protect the resistor against overload, two parameters have been provided for the user to enter the resistor
data. Once a resistor has been chosen for the requirement of a particular application, parameters 10.30 and 10.31 should be
set up according to the resistor data.
Parameter 10.30 should be set up with the time that the resistor can withstand 780V (or 390V) across it (short time overload).
This is the time for the resistor to reach maximum operating temperature from the expected maximum ambient given the
power input at the braking voltage level.
Parameter 10.31 should be set to the time period required before a second short time overload can be applied without
damage.
Parameter 10.31 defines the time for the resistor to fall to ambient temperature but this does not mean that this amount of
time is required between braking. The actual period between braking will depend on the amount of energy put into the
resistor during a braking period, since the braking resistor accumulator must remain below 100% to prevent a trip (dotted
line).
Commander SE Advanced User Guide
Issue Number: 4
Trip
Condition
Number
28 Current loop loss on terminal 5
User serial communications watchdog
30
failure
31 Failure of internal EEPROM
32 Phase loss
33 Stator resistance measurement failure
User trips where xx is the user trip
40-99
number
180 Field bus disconnection whilst in use
182 Quickey memory corrupt
183 Quickey with no data
185 Quickey write fail
186 Quickey voltage rating change
+28V serial communications power
188
supply overload
189 Current loop input overload
Motor runs unstable
Max full power braking time
0
Max full power braking period
0
Input current less than 3mA when 4-20 or 20-4
modes used
Failure of serial communications between drive and
master
Possible loss of parameter values
Corruption due to severe electrical noise
Set default parameters (see parameter 11.43)
One of the input phases has become disconnected
from the drive. (This applies to 200V/400V three
phase units only, not dual rated units).
Motor cable disconnected during measurement
Motor too small for drive
See parameter 5.12 for more details
Bad connection or memory corrupt
New / empty Quickey being read
Quickey / drive software compatibility issue
Bad connection or faulty Quickey
Already programmed Quickey read by drive of
different rating
Overload of more than 110 mA or short circuit on
+28V serial communications power supply
Input current exceeded 25mA
Motor or motor connections changed. Check motor
connections and re-autotune drive to motor (see
parameter 5.12)
100°C (212°F)
s RW Uni
min RW Uni
Possible Cause
81