Danfoss EIM 336 Manual Download Page 14

Setup 

(continued)

14 

DKRCC.PS.RQ0.B5.02 / 520H8256 

© Danfoss A/S (AC-MCI / sw), 2014-11

Manual 

Superheat Controller EIM 336

Group

PNU

Parameter

Symbolic name

Min.

Max.

Default Units

e2

W

*10

Description

Regfrigerant

2551

o30

Refrigerant

0

31

23

ü

ü

1 = R12 

2 = R22 

3 = R134a 

4 = R502 

5 = R717

6 = R13 

7 = R13b1 

8 = R23 

9 = R500 

10 = R503 

11 = R114 

12 = R142b

13 = User

defined

14 = R32 

15 = R227 

16 = R401A 

17 = R507 

18 = R402A 

19 = R404A 

20 = R407C 

21 = R407A 

22 = R407B 

23 = R410A 

24 = R170

25 = R290 

26 = R600 

27 = R600a

28 = R744 

29 = R1270 

30 = R417A 

31 = R422A

32=R413A

33=R422D

34=427A

35=R438A

36=Opteon

XP10

37 =R407F

2548

RF1

Rfg. fac. A1

8000

12000

10428

ü

ü

Adiabatic constant A1

2549

RF2

Rfg. fac. A2

-4000

-1000

-2255

ü

ü

Adiabatic constant A2

2550

RF3

Rfg. fac. A3

1000

3000

2557

ü  ü

Adiabatic constant A3

Sensors

113

r09

Adjust S2

-10

0

0

K

ü

ü

ü

S2 Offset adjustment to correct the 

sensor signal due to long wires etc.

2033

o21

Max. transducer 

pressure

1

200

16

bar 

(abs.)

ü

ü

ü

Maximum transducer pressure (in bar 

absolute * 10)

2034

o20

Min. transducer 

pressure

0

1

0

bar 

(abs.)

ü

ü

ü

Minimum transducer pressure (in bar 

absolute * 10)

System

50020

-

Avg KT0 time

10

3600

180

ü

ü

Average time for KT0 used as filtervalue 
for the average opening degree calcula-
tion when calculating the KT0

50021

-

Avg OD 3 hours

0

1000

100

per 

mill

ü

ü

ü

Average OD, updated every 3 hours

50051

-

Sampling time

1

10

1

sec.

ü

ü

Algorithm sampling time

64200

LBO

Limited list

0

1

0

ü

ü

Modbus translation table for limited list 

of sequential registers

64100

HWM

HW main switch

0

1

0

ü

ü

1 = S4 input is HW Main Switch

64309

-

Manual OD as 

steps

0

1

0

ü

ü

Enable the manual OD in o45 to be 

entered as halfsteps. Readouts are still in 

percent

Service

Alarm

2046

RAL

Reset alarm

0

1

0

ü

1 = clear alarm

20001

-

EKC Error

0

1

0

Common error flag. EKC Error is SET if any 

other Error Alarm  is ON.

20002

-

S2 Error

0

1

0

S2 sensor error. If the sensor error 

occurs, the valve OD will be set to 80% 

of the Avg. opening (PNU 50021)  - see 

troubleshooting.

20005

-

Pe inp.error

0

1

0

AKS 32R out of range. If the sensor error 

occurs, the valve OD will be set to 80% 

of the Avg. opening (PNU 50021)  - see 

troubleshooting.

20006

-

No Rfg. Sel.

0

1

0

Refrigerant not selected

50006

-

LOC Alarm

0

1

0

Loss of charge alarm. No action will be 

performed except setting the alarm.

Readout

2531

u16

S4  air temp

-200

200

0

°C

ü

S4 temperature in °C measured with PT 

1000 sensor connected to KM2

2535

u22

Superheat Ref

0

100

0

K

ü

Current superheat reference

2536

u21

Superheat

0

100

0

K

ü

Current superheat (S2 - evaporator 

temperature)

2537

u20

S2 Temp

-200

200

0

°C

ü

S2 temperature in °C measured with a PT 

1000 sensor connected to KM1.

2542

u24

opening %

0

100

0

%

Actual opening degree

2543

u25

Evap Press P

e

-200

200

0

bar 

(abs.)

ü

Evaporator pressure measured with 

ratiometric pressure transmitter at KM6.

2544

u26

Evap Temp T

e

-200

200

0

°C

ü

Evaporator temperature (converted from 

evaporator pressure)

3101

-

Closed valve T

0

2000

0

Closed valve timer

3102

-

LOC Tmr

0

2000

0

Loss Of Charge time

50033

-

Avg opening

0

100

0

%

Average opening degree. If it has never 
run before it will give the value of PNU 
50021 at start up.

64306

-

SWVer shdw

x

x

x

Copy of 2003. This displays the version 

number in a non-EKC format. For 

example 123 means vers 1.23

Summary of Contents for EIM 336

Page 1: ...ess noise The EIM 336 is the superheat controller that can be used to control the opening degree of a valve based on the superheat of the evaporator This is applicable in applications such as air cond...

Page 2: ...allation sensors 17 Warnings 17 Acronyms and abbreviations used in this manual LOC Loss of charge indication SH Superheat MOP Maximum operating pressure MSS Minimum stable superheat Te Saturated sucti...

Page 3: ...densed Superheat close When the superheat is below a set minimum value the valve will close faster in order to protect the compressor from the risk of getting liquid in the suction line Manual control...

Page 4: ...S2 PT1000 S4 PT1000 or digital input from external contact EEV driver Max current 150 mA EEV Uni or bipolar coil Data communication RS485 Modbus RTU Environment Storage 34 C to 71 C 30 F to 160 F Ope...

Page 5: ...odbus address stored in PNU no 40041 default 165 Jumper not mounted Outdoor unit condenser Modbus address stored in PNU no 40042 default 164 Com KM5 1 Drain D 2 RS485 TxD RxD 3 RS485 TxD RxD 4 Not Use...

Page 6: ...trol mode does not depend on the r12 Main Switch and will set the opening degree regardless of its setting Setting o18 Manual ctrl to 0 again the controller will assume normal control and will open or...

Page 7: ...secondary address is 164 Note Changes to these parameters will become active immediately This means that a modbus tool or controller that changes these settings will loose connection to the EIM 336 an...

Page 8: ...e controller is powered the valve will first be closed fully so that the controller starts from a known opening degree 0 In order to make sure that it is fully closed the valve will be closed 100 plus...

Page 9: ...sensor value will be used 5 Configuring the superheat control The superheat control algorithm will attempt to regulate the superheat down to the lowest stable value between the minimum superheat sett...

Page 10: ...um operation pressure If Pe goes above this value the controller will control on Pe and not on superheat Kp MOP 3113 Kp proportional gain while in MOP control mode Tn MOP 3114 Tn integration time whil...

Page 11: ...05 Timer to trigger LOC alarm LOC Alarm 50006 Loss of charge alarm flag 0 no alarm 1 LOC alarm LOC SH Trig 50007 SH error trigger level for LOC alarm LOC Tmr 3102 Loss Of Charge time readout displays...

Page 12: ...t regulation response Very low value give the risk of unstable regulation For Danfoss only 3105 SHL SH Low 3 20 6 K Superheat low setting for non linear control 3106 SHH SH High 8 40 16 K Superheat hi...

Page 13: ...ext S2 temp 200 200 0 C External S2 This value can be used instead of a sensor This register must be written at least every 5 seconds otherwise the sensor value will be used 2646 TS4 ext S4 Air temp 2...

Page 14: ...ain Switch 64309 Manual OD as steps 0 1 0 Enable the manual OD in o45 to be entered as halfsteps Readouts are still in percent Service Alarm 2046 RAL Reset alarm 0 1 0 1 clear alarm 20001 EKC Error 0...

Page 15: ...troller will go to either the low or high boundary de pending on the error The highest value will be shown if the signal is above the maximum value The lowest value will be shown if the signal is belo...

Page 16: ...it 3 Bit 2 Bit 1 Bit 0 Unused MOP Active Close Timer active Sensor Errors Control state Variables parameters CTRLstatus bit 0 3 Controlstate 0 closed 1 Error 2 Inject 3 De humidify 4 Force OD 5 Defros...

Page 17: ...ght after the evaporator If the measured value is 1 2 K lower than the actual value of Pe right after the evaporator it may cause the evaporator to flood This is the case when the pressure transmitter...

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