Parameters: 4-** Limits/Warnings - Danfoss VLT Refrigeration Drive FC 103 Programming Manual

Parameter Description

3.6 Parameters: 4-** Limits/Warnings

3.6.1 4-1* Motor Limits
Define torque, current, and speed limits for the motor, and
the reaction of the frequency converter when the limits are
exceeded.
A limit may generate a message in the display. A warning
always generates a message in the display or on the
fieldbus. A monitoring function may initiate a warning or a
trip, after which the frequency converter stops and
generates an alarm message.
4-10 Motor Speed Direction
Option: Function:
NOTICE
The setting in parameter 4-10 Motor
Speed Direction has impact on the
flying start in parameter 1-73 Flying
Start.
Selects the motor speed direction required.
Use this parameter to prevent unwanted
reversing.
[0] Clockwise Only operation in clockwise direction is
*
allowed.
[2] Both Operation in both clockwise and counter-
directions clockwise direction is allowed.
4-11 Motor Speed Low Limit [RPM]
Range: Function:
Size [ 0 - par. Enter the minimum limit for motor speed
related 4-13 in RPM. The motor speed low limit can be
*
RPM] set to correspond to the minimum motor
speed recommended by the manufacturer.
The motor speed low limit must not
exceed the setting in
parameter 4-13 Motor Speed High Limit
[RPM].
4-12 Motor Speed Low Limit [Hz]
Range: Function:
Size [ 0 - Enter the minimum limit for motor speed
related par. 4-14 in Hz. The motor speed low limit can be
*
Hz] set to correspond to the minimum output
frequency of the motor shaft. The speed
low limit must not exceed the setting in
parameter 4-14 Motor Speed High Limit [Hz].
MG16H202
Programming Guide
4-13 Motor Speed High Limit [RPM]
Range:
Size
related
*
4-14 Motor Speed High Limit [Hz]
Range:
Size
related
*
Danfoss A/S © 05/2016 All rights reserved.
Function:
NOTICE
[ par.
4-11 -
Any changes in parameter 4-13 Motor
60000
Speed High Limit [RPM] reset the value
RPM]
in parameter 4-53 Warning Speed High
to the value set in
parameter 4-13 Motor Speed High Limit
[RPM].
NOTICE
Maximum output frequency cannot
exceed 10% of the inverter switching
frequency (parameter 14-01 Switching
Frequency).
Enter the maximum limit for motor speed in
RPM. The motor speed high limit can be set
to correspond to the manufacturer's
maximum rated motor. The motor speed
high limit must exceed the setting in
parameter 4-11 Motor Speed Low Limit [RPM].
The parameter name appears as either
parameter 4-11 Motor Speed Low Limit [RPM]
or parameter 4-12 Motor Speed Low Limit [Hz],
depending on:
•
The settings of other parameters in
the Main Menu.
•
Default settings based on
geographical location.
Function:
[ par. Enter the maximum limit for motor speed in
4-12 - Hz. Parameter 4-14 Motor Speed High Limit
par. [Hz] can be set to correspond to the
4-19 Hz] manufacturer's recommended maximum
motor speed. The motor speed high limit
must exceed the value in
parameter 4-12 Motor Speed Low Limit [Hz].
The output frequency must not exceed 10%
of the switching frequency
(parameter 14-01 Switching Frequency).
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