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Option Name
Description
[4]
ETR trip 1
Calculates the load when set-up 1 is active and stops (trips) the drive when the motor is overloa-
ded. Program a warning signal via 1 of the digital outputs. The signal appears in the event of a
warning and if the drive trips (thermal warning).
[5]
ETR warning 2
[6]
ETR trip 2
[7]
ETR warning 3
[8]
ETR trip 3
[9]
ETR warning 4
[10]
ETR trip 4
[20]
ATEX ETR
Activates the thermal monitoring function for Ex-e motors for ATEX. Enables
parameter 1-94 ATEX
ETR cur.lim. speed reduction
,
parameter 1-98 ATEX ETR interpol. points freq.
, and
parameter 1-99
ATEX ETR interpol points current
.
[21]
Advanced ETR
N O T I C E
If
[20] ATEX ETR
is selected, follow the instructions in the dedicated chapter of the design guide and the instructions provided by
the motor manufacturer.
N O T I C E
If
[20] ATEX ETR
is selected, set
parameter 4-18 Current Limit
to 150%.
Parameter 1-91 Motor External Fan
Table 137: Parameter 1-91 Motor External Fan
1-91 Motor External Fan
Default value: Size related
Parameter type: Option
Setup: All setups
Conversion index: –
Data type: Uint8
Change during operation: True
Option Name Description
[0]
No
No external fan is required, that is the motor is derated at low speed.
[1]
Yes
Applies an external motor fan (external ventilation), so no derating of the motor is required at low speed. The
upper curve in
(f
out
= 1 x f
M,N
) is followed if the motor current is lower than nominal motor cur-
rent (see
parameter 1-24 Motor Current
). If the motor current exceeds nominal current, the operation time still
decreases as if no fan was installed.
Parameter 1-93 Thermistor Resource
Table 138: Parameter 1-93 Thermistor Resource
1-93 Thermistor Resource
Default value: [0] None
Parameter type: Option
Setup: All setups
Conversion index: –
Data type: Uint8
Change during operation: True
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Parameter Descriptions
VLT AutomationDrive FC 301/302
Programming Guide
Summary of Contents for VLT AutomationDrive FC 301
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