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104
Functional Description
CG Drives & Automation, 01-5326-01r5
11.4.5 Motor Protection [230]
This function protects the motor against overload based on
the standard IEC 60947-4-2.
Motor I
2
t Type [231]
The motor protection function makes it possible to protect
the motor from overload as published in the standard IEC
60947-4-2. It does this using “Motor I2t Current [232]” as a
reference. The “Motor I2t Time [233]” is used to define the
time behaviour of the function. The current set in [232] can
be delivered infinite in time. If for instance in [233] a time
of 1000 s is chosen the upper curve of Fig. 95 is valid. The
value on the x-axis is the multiple of the current chosen in
[232]. The time [233] is the time that an overloaded motor
is switched off or is reduced in power at 1.2 times the
current set in [232].
Communication information
Motor I
2
t Current [232]
Sets the current limit for the motor I
2
t protection in percent
of I
MOT
.
Communication information
Motor I
2
Sets the time of the I
2
t function. After this time the limit for
the
I
2
t is reached if operating with 120% of the I
2
t current
value. Valid when start from 0 rpm.
Communication information
231
Mot I
2
t Type
Default:
Trip
Off
0
I
2
t motor protection is not active.
Trip
1
When the I
2
t time is exceeded, the AC
drive will trip on “Motor I
2
t”.
Limit
2
This mode helps to keep the inverter
running when the Motor I2t function is just
before tripping the AC drive. The trip is
replaced by current limiting with a
maximum current level set by the value
out of the menu [232]. In this way, if the
reduced current can drive the load, the
AC drive continues running. If there is no
reduction in thermal load, the drive will
trip.
Modbus Instance no/DeviceNet no:
43061
Profibus slot/index
168/220
EtherCAT and CANopen index (hex)
4bf5
Profinet IO index
19445
Fieldbus format
UInt
Modbus format
UInt
NOTE: When Mot I2t Type=Limit, the AC drive can
control the speed < MinSpeed to reduce the motor
current.
232
Mot I
2
t Curr
Default:
100% of I
MOT
Range:
0–150% of I
MOT
(set in menu [224])
Modbus Instance no/DeviceNet no:
43062
Profibus slot/index
168/221
EtherCAT and CANopen index (hex)
4bf6
Profinet IO index
19446
Fieldbus format
Long, 1=1%
Modbus format
EInt
NOTE: When the selection Limit is set in menu [231],
the value must be above the no-load current of the
motor.
NOTE: Not the time constant of the motor.
233
Mot I
2
t Time
Default:
60 s
Range:
60–1200 s
Modbus Instance no/DeviceNet no:
43063
Profibus slot/index
168/222
EtherCAT and CANopen index (hex)
4bf7
Profinet IO index
19447
Fieldbus format
Long, 1=1 s
Modbus format
EInt
Содержание Emotron VFX Series
Страница 1: ...Emotron VFX 2 0 AC drive Instruction manual English Valid from software version 4 42...
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Страница 10: ...6 CG Drives Automation 01 5326 01r5...
Страница 50: ...46 Installation CG Drives Automation 01 5326 01r5...
Страница 62: ...58 Getting Started CG Drives Automation 01 5326 03r5...
Страница 74: ...70 EMC and standards CG Drives Automation 01 5326 01r5...
Страница 90: ...86 Operation via the Control Panel CG Drives Automation 01 5326 01r5...
Страница 218: ...216 CG Drives Automation 01 5326 01r5...
Страница 226: ...224 Troubleshooting Diagnoses and Maintenance CG Drives Automation 01 5326 01r5...
Страница 236: ...234 Options CG Drives Automation 01 5326 01r5...
Страница 256: ...254 Technical Data CG Drives Automation 01 5326 01r5...
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