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EKC347 PDF 데이터시트 : 부품 기능 및 핀배열

부품번호 EKC347
기능 Liquid Level Controller
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EKC347 데이터시트, 핀배열, 회로
REFRIGERATION AND
AIR CONDITIONING
EKC 347
Liquid Level Controller
Manual




EKC347 pdf, 반도체, 판매, 대치품
Manual
EKC 347 Liquid Level Controller
Operating the EKC 347
The Display
The EKC 347 has a three character digital display. Four status LEDs
(Light Emitting Diodes) are to the left of the numerals. To the right of
the display are two push buttons.
By default, the display normally shows the liquid level %, but user
programming allows the valve’s opening degree to be selected
as the normal display. At any given time, depressing the lower
pushbutton will change from the normal display to the other value
(liquid level % or valve opening %), which will be displayed for 5
seconds.
The Front Panel LEDs
The upper LED indicates that a signal is being sent to open a pulse-
width modulated valve type AKV/A or a solenoid valve that is
being controlled for on-off applications. The upper LED will has no
function when using the EKC 347 with a motorized valve type ICM/
ICAD.
The three lower LEDs are used to indicate an alarm or an error in
regulation. The diagram to the right shows the meanings of the
symbols. If, for example, alarm A3 is detected, or there is an error
in regulation, all three LEDs will flash. In this situation, pushing the
upper button for 1 second will cause “A3” or the error code to be
displayed. If both an alarm and an error occur simultaneously, only
the error code will be displayed.
When an alarm code is displayed by pushing the upper button, the
alarm relay A3 will be cut out.
Front panel LED's
All
Opening signal to valve
Indication of upper level limit
Indication of lower level limit
Indication of alarm level
The error (prefix E), alarm (prefix A), and status (prefix S) codes
that can be displayed are given in the table below, along with the
meaning of each code.
Code
E1
E12
E21
E22
A1
A2
A3
S10
S12
Description
Errors in the controller
Analog input value on terminals 19 & 21 or 20 & 21 is out of range
No signal from the liquid level sensor, or the signal value is out of range*
Valve position feedback on terminals 17 & 18 is out of range
High level alarm A1 has been detected
Low level alarm A2 has been detected
Additional level alarm A3 has been detected
Level regulation stopped by internal (parameter r12) or external (terminals 1 &2) start-stop
High or low level alarm has been detected when not using alarm A3 as a common alarm
* If the signal is lost from the liquid level sensor, the controller will force the valve to the fully closed
position if parameter n35 is 0 or, the controller will force the valve fully open if parameter n35 is 1. But
if a maximum or minimum valve opening degree (parameters n32 and n33, respectively) has been set,
then the valve will be forced to the set limits, not beyond.
4
USCO.PS.G00.A1.22 / 521U0079
© Danfoss A/S (USCO/HMR_MKS), 10 - 2007

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EKC347 전자부품, 판매, 대치품
Manual
EKC 347 Liquid Level Controller
Level control settings
The parameter list in this technical leaflet is valid for software versions 1.1x .
Description of setting
Parameter Minimum Maximum
Factory
setting
Liquid level setpoint
This setting is not changed by entering the parameter list, but by pushing both
buttons simultaneously, then using the buttons individually to adjust the setpoint up
and down. (see the section “Operating the EKC 347.”
-
0 (%)
100 (%)
50 (%)
Displacement of liquid level setpoint with an analog input to the EKC 347 from a
PLC or other device
With an analog input from a PLC or other device, the liquid level setpoint will be offset
by this set percentage when the input is at its maximum. (See also parameter o10)
r06
-100 (%) 100 (%)
0%
Start-Stop regulation
This parameter allows you to stop the controller from regulating. When turned off, the
controller will close the valve.
This parameter works in series with the switch function on terminals 1 & 2 (see wiring
section). Regulation is stopped if either there is no connection between terminals 1 &
2 or r12 is OFF.
r12
0 11
(OFF) (ON) (ON)
Alarm parameters
High level alarm relay A1
This relay (terminals 9 and 10) will be cut in when the liquid level is higher than this
parameter for the time set as parameter A03. This relay will always be cut out during
power interruption.
Low level alarm relay A2
This relay (terminals 8 and 10) can be set to cut in or cut out when liquid level is lower
than this parameter for the time set as parameter A15. Parameter A18 determines
whether the relay is cut in or cut out. This relay will always be cut out during power
interruption.
Time delay for high level alarm relay A1
Time delay for low level alarm relay A2
Additional alarm relay A3
This relay (terminals 12 and 13) can be used as an additional high (or low) level alarm
that will cut in when the level is higher (or lower) than this parameter for the time set
as parameter A17. Parameter A18 determines whether the alarm is for high or low
level.
By using parameter A19, this alarm can also be set to cut in with an A1 or A2 alarm (as
a common alarm).
This relay will always be cut in during power interruption, or if the controller loses the
power signal from the level sensor.
Time delay for additional alarm A3
Defining the switching functions of alarms A2 and A3
Setting 0:
A2 will cut in under alarm conditions
A3 will be a high liquid level alarm
Setting 1:
A2 will cut in under alarm conditions
A3 will be a low liquid level alarm
Setting 2:
A2 will cut out under alarm conditions
A3 will be a high liquid level alarm
Setting 3:
A2 will cut out under alarm conditions
A3 will be a low liquid level alarm
Additional alarm A3 used as a common alarm
Setting 0:
Alarm relay A3 is also a common alarm that will be cut in if an A1, A2, or A3 alarm
occurs.
Setting 1:
Alarm relay A3 is cut in only when an A3 alarm occurs.
7 USCO.PS.G00.A1.22 / 521U0079
A01
A02
A03
A15
A16
A17
A18
A19
0 (%)
100 (%)
85 (%)
0 (%)
100 (%)
15 (%)
0 (sec)
0 (sec)
999 (sec)
999 (sec)
10 (sec)
20 (sec)
0 (%)
100 (%)
50(%)
0 (sec) 999 (sec) 0 (sec)
0 30
0 10
© Danfoss A/S (USCO/HMR_MKS), 10 - 2007

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관련 데이터시트

부품번호상세설명 및 기능제조사
EKC347

Liquid Level Controller

Danfoss
Danfoss

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