Franklin Electric CERUS X-DRIVE CXD-003A-4V, Инструкция по установке и эксплуатации

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OPERATION
Protection Features
91
ACI Input Sel [IO-00] or AVI1 Input Sel [IO-05]: In the appropriate parameter (ACI or AVI1), set to 3
_PTC.
AFM1 Out Select [IO-59] or AFM2 Out Select [IO-61] : In the appropriate parameter (AFM1 or AFM2), set to
9_Constant Output
.
AFM1 mA Select [IO-63] or AFM2 mA Select [IO-64] : In the appropriate parameter (AFM1 or AFM2), set to
0_0-20 mA
.
Set the PTC Curve
The PTC manufacturer’s specifications and PTC Curve must be used
for the following. An example PTC Curve is shown for explanation.
Choose the highest temperature on the curve that the sensor will
detect, based off of the intended motor application.
NOTE: R
HIGH
must be larger than 500 ohms and less than
100,000 ohms
T
HIGH
=Highest temperature
R
HIGH
=Highest resistance
Locate the “knee” or bend of the curve and determine the corre -
sponding temperature and resistance.
T
MID
=Mid temperature
R
MID
=Mid resistance
Choose the lowest temperature on the curve that the sensor will
detect.
T
LOW
=Lowest temperature
R
LOW
=Lowest resistance
Use the below calculations to set analog input PTC curve parameters:
NOTE: I
DC
= R
HIGH
/10 V
AFM1 DC Lvl [ADV2-06]
or
AFM2 DC Lvl [ADV2-07]:
In the appropriate parameter (AFM1 or AFM2), set the
maximum current for the sensor. To determine the maximum current, perform the following calculation:
I
DC
/ 0.020 A * 100%
I
DC
= R
HIGH
/10 V
0.020 A is the high amperage from the analog output DIP switch setting (0-20 mA)
The calculation multiplies by 100% to convert to a percentage; the VFD reads DC Lvl as a percent -
age.
PTC Level [PROT-20]: Set the PTC Level as determined by the following calculation:
T
LEVEL
/T
HIGH
* 100%
T
LEVEL
=Trip Level temperature
PTC/PT100 Level [PROT-19]: Select the VFD’s response to the PTC trip level temperature (consult “Param -
eter Descriptions > Protection Menu” on page 220 ).
ACI Input AVI1 Input Calculation
ACI Low % [ADV2-16] AVI1 Low % [ADV2-10]
T
LOW
/ T
HIGH
* 100%
ACI Mid % [ADV2-18] AVI1 Mid % [ADV2-12]
T
MID
/ T
HIGH
* 100%
ACI High % [ADV2-20] AVI1 High % [ADV2-14] 100%
ACI Low Value [ADV2-15] AVI1 Low Value [ADV2-09]
R
LOW
* I
DC
ACI Mid Value [ADV2-17] AVI1 Mid Value [ADV2-11]
R
MID
* I
DC
ACI High Value [ADV2-19] AVI1 High Value [ADV2-13]
R
HIGH
* I
DC
RLEVEL
T LEVEL
“Knee” or Bend
of the Curve
LOW
T
MID
T
HIGH
T
LOW
R
MID
R
HIGH
R
Trip Area
Re
si
st
an
ce
(o
hm
)
Temperature (°C)
PTC (RTD) Curve