Danfoss VLT AutomationDrive FC 302 Programming Manual page 130

Parameter Descriptions
3.14.3 13-1* Comparators
Comparators are used for comparing continuous variables
(i.e. output frequency, output current, analog input etc.) to
fixed preset values.
3 3
Par. 13-10
Comparator Operand
Par. 13-12
Comparator Value
Illustration 3.49 Comparators
In addition, 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 to 5. Select index 0 to
programme Comparator 0, select index 1 to programme
Comparator 1, and so on.
13-10 Comparator Operand
Array [6]
Option:
[0] DISABLED
[1] Reference %
[2] Feedback %
[3] Motor speed
[4] Motor Current
[5] Motor torque
[6] Motor power
[7] Motor voltage
[8] DC-link voltage
[9] Motor Thermal
[10] Drive thermal
128
®
VLT AutomationDrive FC 301/302 Programming Guide
Par. 13-11
Comparator Operator
=
TRUE longer than.
. . .
. . .
Function:
Options [1] to [31] are variables which
are compared based on their values.
Options [50] to [186] are digital values
(TRUE/FALSE) where the comparison is
based on the amount of time during
which they are set to TRUE or FALSE,
respectively. See
parameter 13-11 Comparator Operator.
Select the variable to be monitored by
the comparator.
The comparator is disabled.
The resulting remote reference (not local)
as a percentage.
[RPM] or [Hz], as set in parameter
0-02 Motor Speed Unit.
[RPM] or [Hz], as set in parameter
0-02 Motor Speed Unit.
[A]
[Nm]
[kW] or [hp]
[V]
[V]
Expressed as a percentage.
Expressed as a percentage.
MG33MI02 - Rev. 2013-11-20
13-10 Comparator Operand
Array [6]
Option: Function:
[11] Heat sink temp. Expressed as a percentage.
[12] Analog input Expressed as a percentage.
AI53
[13] Analog input Expressed as a percentage.
AI54
[14] Analog input [V]. AIFB10 is internal 10 V supply.
AIFB10
[15] Analog input [V] Analog input AICCT [17] [°]. AIS24V is
AIS24V switch mode power supply: SMPS 24V.
[17] Analog input [°]. AICCT is control card temperature.
AICCT
[18] Pulse input Expressed as a percentage.
FI29
[19] Pulse input Expressed as a percentage.
FI33
[20] Alarm number The error number.
[21] Warning
number
[22] Analog input
x30 11
[23] Analog input
x30 12
[30] Counter A Number of counts.
[31] Counter B Number of counts.
[32] Process PID Value of the PID Error
Error (parameter 18-90 Process PID Error)
[33] Process PID Value of the PID Output
Output (parameter 18-91 Process PID Output)
[50] FALSE Enters the fixed value of false in the
comparator.
[51] TRUE Enters the fixed value of true in the
comparator.
[52] Control ready The control board receives supply
voltage.
[53] Drive ready The frequency converter is ready for
operation and applies a supply signal on
the control board.
[54] Running The motor is running.
[55] Reversing The output is high when the frequency
converter is running counter clockwise
(the logical product of the status bits
"running" AND "reverse").
[56] In range The motor is running within the
programmed current and speed ranges
set in parameter 4-50 Warning Current
Low to parameter 4-53 Warning Speed
High.