Lenze i510 - Device Overload Monitoring (I*T)

Parameter Name / value range / [default seng] Info
0x2000:012
(PAR 190/012)
Power unit - bootloader v
ersion
(PU bootlder ver.)
•
Read only
0x2000:013
(PAR 190/013)
Power unit - bootloader type
(PU bootlder type)
•
Read only
0x2001
(PAR 191)
Device name
(Device name
)
["My Device"]
Any device name (e.g. "Wheel drive") can be set in this object for the
purpose of device idencaon.
5.3.8 Device overload monitoring (i*t)
The inverter calculates the i*t ulisaon in order to prot
ect itself against thermal overload. In
simple terms: a higher current or an overcurrent that connues for a longer me causes a
higher i*t ulisaon.
DANGER!
Uncontrolled motor movements by pulse inhibit.
When the device overload monitoring funcon is
acvated, pulse inhibit is set and the motor
becomes torqueless. A load that is connected to motors without a holding brake may there-
fore cause uncontrolled movements! Without a load, the motor will coast.
▶
Only operate the inverter under permissible load condions.
Details
The device overload monitoring funcon primarily oers protecon to the power secon.
Indirectly
, also other components such as lter chokes, circuit-board conductors, and termi-
nals are protected against overheang. Short-me overload currents followed by recovery
periods (mes of smaller current ulisaon) are permissible. The monitoring funcon during
operaon checks whether these condions are met, taking into consideraon that higher
switching frequencies and lower stator frequencies as well as higher DC voltages cause a
greater device ulisaon.
•
If the device ulisaon exceeds the warning threshold set in 0x2D40:002 (Lenze seng:
95 %), the inverter outputs a warning. The user can ulise this status as a trigger to acvate
specic funcons.
•
If the device ulisaon exceeds the xed error threshold 100 %, the inverter changes to the
"Trouble" device state. Further operaon of the inverter is prevented by controller inhibit.
Controlled standsll can only be executed by the use of a mechanical brake.
Device overload monitoring enables operaon of the inverter under the following load condi-
ons:
•
Connuous current load with up to 100 % rated current.
•
3-minute cycle: 150 % rated current for 60 s, recovery phase 120 s with 75 % rated current.
•
15-second cycle: 200 % rated current for 3 s, recovery phase 12 s with 75 % rated current.
Parameter Name / value range / [default seng] Info
0x2D40:002 Device ulisaon (i*t): Warning threshold
0 ... [95] ... 101 %
If the device ulisaon exceeds the threshold set, the inverter outputs a
warning.
•
With the seng 0 % or 101 %, the warning is
deacvated.
0x2D40:004
(PAR 135/004)
Device ulisaon (i*t): Actual ulisaon
(Device ulisaon: Ixt ulisaon)
•
Read only: x %
Display of the current device ulisaon.
0x2D40:005
(PAR 135/005)
Device ulisaon (i*t): Err
or response
(Device ulisaon: Error response)
Selecon of the response to be executed when the device overload
monitoring funcon is triggered.
2 Trouble
3 Error
0x2DDF:001 Axis informaon: Rated current
•
Read only: x.xx A
•
Def
ault seng depending on the size.
Diagnoscs and fault eliminaon
Diagnoscs
Device overload monitoring (i*t)
61
Phone: 800.894.0412 - Fax: 888.723.4773 - Web: www.actechdrives.com - Email: info@actechdrives.com