3.13.3 13-1* Comparators
Comparators are used for comparing continuous variables
(that is output frequency, output current, analog input, and
so on) to xed preset values.
Par. 13-11
Comparator Operator
=
TRUE longer than.
. . .
. . .
Par. 13-10
Comparator Operand
Par. 13-12
Comparator Value
130BB672.10
Illustration 3.36 Comparators
There are digital values that are compared to xed time
values. See the 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 0–9. Select index 0 to program comparator 0,
select index 1 to program comparator 1, and so on.
13-10 Comparator Operand
Array [6]
Option: Function:
Select the variable to be monitored
by the comparator.
[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
[11] Heat sink
temp.
[12] Analog input
AI53
[13] Analog input
AI54
[14] Analog input
AIFB10
[15] Analog input
AIS24V
[17] Analog input
AICCT
[18] Pulse input
FI29
13-10 Comparator Operand
Array [6]
Option: Function:
[19] Pulse input
FI33
[20] Alarm number
[21] Warning
number
[22] Analog input
x30 11
[23] Analog input
x30 12
[24] Sensorless
Flow
[25] Sensorless
Pressure
[29] Number Of
Pump Running
[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
[40] Analog input
x42/1
[41] Analog input
x42/3
[42] Analog input
x42/5
[43] Analog input
X49/1
[44] Analog input
X49/3
[45] Analog input
X49/5
[50] FALSE
[51] TRUE
[52] Control ready
[53] Drive ready
[54] Running
[55] Reversing
[56] In range
[60] On reference
[61] Below
reference, low
[62] Above ref,
high
[65] Torque limit
[66] Current Limit
Parameter Descriptions
VLT
®
HVAC Drive FC 102
130 Danfoss A/S © 10/2019 All rights reserved. M0010001
33
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