Danfoss VLT AutomationDrive FC 301 Programming Manual page 145

Parameter Descriptions
3.14.2 13-1* Comparators
Comparators are used for comparing continuous variables
(that is output frequency, output current, analog input, and
so on.) to fixed preset values.
Par. 13-11
Comparator Operator
Par. 13-10
Comparator Operand
=
TRUE longer than.
Par. 13-12
. . .
Comparator Value
. . .
Illustration 3.52 Comparators
There are digital values that are compared to fixed time
values. See explanation in parameter 13-10 Comparator
Operand. Comparators are evaluated once in each scan
interval. Use the result (true or false) directly. All
parameters in this parameter group are array parameters
with index 0–5. Select index 0 to program comparator 0,
select index 1 to program comparator 1, and so on.
13-10 Comparator Operand
Option: Function:
Options [1] Reference % to [31] Counter B
are variables which are compared based
on their values. Options [50] FALSE to
[186] Drive in auto mode are digital values
(true/false) where the comparison is
based on the amount of time during
which they are set to true or false. See
parameter 13-11 Comparator Operator.
Select the variable to be monitored by
the comparator.
[0] DISABLED The comparator is disabled.
[1] Reference % The resulting remote reference in
percent.
[2] Feedback % [RPM] or [Hz], as set in
parameter 0-02 Motor Speed Unit.
[3] Motor speed [RPM] or [Hz], as set in
parameter 0-02 Motor Speed Unit.
[4] Motor Current
[5] Motor torque
[6] Motor power
[7] Motor voltage
[8] DC-link voltage
[9] Motor Thermal Value is in percent.
[10] Drive thermal Value is in percent.
[11] Heat sink temp. Value is in percent.
[12] Analog input Value is in percent.
AI53
MG33ML02
Programming Guide
13-10 Comparator Operand
Option:
[13] Analog input
AI54
[14] Analog input
AIFB10
[15] Analog input
AIS24V
[17] Analog input
AICCT
[18] Pulse input FI29 Value is in percent.
[19] Pulse input FI33 Value is in percent.
[20] Alarm number
[21] Warning
number
[22] Analog input
x30 11
[23] Analog input
x30 12
[26] Actual Position
[30] Counter A
[31] Counter B
[34] Analog Input
x48/2
[35] Temp Input
x48/4
[36] Temp Input
x48/7
[37] Temp Input
x48/10
[50] FALSE
[51] TRUE
[52] Control ready
[53] Drive ready
[54] Running
[55] Reversing
[56] In range
[60] On reference
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Function:
Value is in percent.
AIFB10 is internal 10 V supply.
AIS24V is a 24 V switch mode power
supply.
Value is in [°]. AICCT is control card
temperature.
The number or registered alarms.
The actual position in position units
defined in parameter group 17-7* Position
Scaling.
Use to enter the fixed value of false in
the comparator.
Use to enter the fixed value of true in
the comparator.
Use to enter the control board receives
supply voltage.
The frequency converter is ready for
operation and applies a signal on the
control board.
The motor runs.
The output is active when the frequency
converter runs counterclockwise (the
logical product of the status bits running
AND reverse).
The motor runs within the programmed
current and speed ranges set in
parameter 4-50 Warning Current Low to
parameter 4-53 Warning Speed High.
The motor runs on reference.
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