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Extended functions of group B
Most of the functions of group B serve safety purposes or are used to protect the inverter from damages.
Function
Display
WARNING On occurance of a trip condition this function causes an automatic inverter
restart if a running command is being active at the same time. Additional
precautions must be taken for personnell not to get endangered in case of a
motor restart.
In standard setting any inverter failure will cause a trip condition. An automatic motor restart following an inverter
trip is possible with:
Overcurrent ( E 01 – E 04 , with a maximum of 4 retries within 10 minutes, after 4 retries the inverter trips)
Overvoltage ( E 07 , E 15 , with a maximum of 3 retries within 10 minutes, after 3 retries the inverter trips)
Undervoltage ( E 09 , with a maximum of 16 retries within 10 minutes, after 16 retries the inverter trips)
Restart mode
b 01
Allowable under-
b 02
voltage failure time
Waiting time
b 03
until retry
Function
Display
The L100IP series inverters have an electronic facility that is able to monitor the driven motor's thermal load. This
electronic thermal motor protection facility is matched to the motor's rated current using function b 12 . However,
the motor temperature can not be monitored if values are entered that are above the rated current of the motor. In this
case you will have to install PTC thermistors or thermo contacts into the motor windings.
Electronic thermal
b 12
protection current
Electronic thermal
b 13
characteristic
)
Function description / parameter setting range
*
Automatic restart after inverter trip
Here the inverter reaction to trips E 01 through E 04 , E 07 , E 09 , and
E 15 is selected:
00: Trip messages are displayed on occurrence of the above trips
(retry is not active).
01: Restart with start frequency after the time set under b 03 has
elapsed.
N
02: After the time set under b 03 has elapsed the inverter synchroni-
zes to the motor's current speed and the motor is accelerated using
the configured acceleration time.
03: After the time set under b 03 has elapsed the inverter synchroni-
zes to the motor's current speed and the motor is decelerated using
the configured deceleration time. Afterwards the corresponding
trip will be displayed.
Here the time is entered during which the undervoltage condition
is met while the corresponding trip E 09 is not being displayed.
N
Setting range: 0.3s–25s.
Here the time is entered that must elapse following one of the above
mentioned trip conditions before automatic retry is initiated. During the
N
waiting time the message
Setting range: 0.3s–100s.
)
Function description / parameter setting range
*
Electronic motor protection
The setting range lies between 0.5 times and 1.2 times of the inverter
N
rated current (i.e. the entered value has a unit of A).
Output
current
Constant motor
protection (01)
100%
80%
N
Increased motor
60%
protection (00)
5
20
50 Hz
8-10
Chapter 8 – Using the digital operator
is displayed on the LED display.
For a better electronic protection
of the motor at lower motor speeds
the electronic thermal protection
can be intensified when low fre-
quencies are used.
00: Increased motor protection
01: Constant motor protection
f
100
Standard
setting
00
1.0
1.0
Standard
setting
Inverter
rated
current
01
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