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User Guide

Intelligent Purging System (IPS 8) for Ammonia - Technical data, installation and use

22 | BC306932151284en-000201

Register Parameter Name

Description

User

Level

Min Value

Max Value

Default

Value

Unit/

Type

Read/

Write

Modbus

Function

Code

Modbus

Data Type

Persistent

Yes/No

UNIT CONFIG >

LIMITS SETTINGS

3027

Advanced Setting -
TempSensMin

Recommend default
setting only - Limit for
min temperature

-100,0

130,0

-50

°C

R/W

3/6

Short

Yes

3028

Advanced Setting -
TempSensMax

Recommend default
setting only - Limit for
max temperature

-100,0

130,0

120

°C

R/W

3/6

Short

Yes

3029

Advanced Setting -
BPLMin

Recommend default
setting only - Limit for
min pressure (ref )

-1,0

25,0

0.1

bar

R/W

3/6

Short

Yes

3030

Advanced Setting -
BPLMax

Recommend default
setting only - Limit for
max pressure (ref )

-1,0

25,0

bar

R/W

3/6

Short

Yes

3031

Advanced Setting -
BPHMin

Recommend default
setting only - Limit
for min pressure
(ammonia)

-1,0

59,0

bar

R/W

3/6

Short

Yes

3032

Advanced Setting -
BPHMax

Recommend default
setting only - Limit
for max pressure
(ammonia)

-1,0

59,0

bar

R/W

3/6

Short

Yes

3033

Comp Diff

Differential pressure -
start/stop

0,0

5,0

0.5

bar

R/W

3/6

Short

Yes

3034

Setpoint

Pressure threshhold
for compressor

0,0

12,0

6.5

bar

R/W

3/6

Short

Yes

3035

Tsh

Setpoint for superheat

5,0

40,0

°C

R/W

3/6

Short

Yes

UNIT CONFIG >

MANUAL START

3036

Advanced Setting -
Man Start

Recommend default
setting only - This
engages 14 relays
on the unit - only for
factory
0: NO
1: YES

Enum 2

R/W

3/6

Short

Yes

STATUS VAR > MCX

DESIGN HOTSPOTS

1859

Reset Alarms

Reset alarm

N/A

R/W

3/6

Short

Yes

8101

SystemOnOff

Feedback from the
main switch

-32768

32767

Enum 1

Read

only

Short

8102

ValveStatus

Feedback from the
purge valve - open/
closed

-32768

32767

Enum 1

Read

only

Short

8103

CompressorStatus

Feedback from the
compressor - on/off

-32768

32767

Enum 1

R/W

3/6

Short

Yes

8104

ALARActive

Any alarm active
indicator

-32768

32767

Enum 2

Read

only

Short

8105

PressTotemp

Suction temperature
(calculated from
pressure on suction)

-327,7

327,7

°C

Read

only

Short

8106

ValveCount

The amount of purge
valve activations

-2147483648

2147483647

N/A

Read

only

Long

8108

ComprTime

Remaining time for
compressor pull-down
for the actual purge
pointr cycle

-2147483648

2147483647

Minutes

Read

only

Long

8110

COmprStartAfter

The delay between
the purging cycles

-2147483648

2147483647

Minutes

Read

only

Long

9901

Advanced Setting -
ResetMem

Recommend default
setting only - All
logged values are
reset
0: NO
1: YES

Enum 2

R/W

3/6

Short

Yes

8112

ValveHour

The amount of hours
that the main purge
valve has been active

-214748364,8 214748364,7

Hours

Read

only

Long

8114

StatusKL

Status of KL01 relay
(compressor and
crankcase heater)

-32768

32767

Enum 2

Read

only

Short

8115

WaringCompr

Indicates problem
with compressor
status

-32768

32767

Enum 2

Read

only

Short

Summary of Contents for 084H5001

Page 1: ...ir danfoss com 148R9645 User Guide Intelligent Purging System IPS 8 for Ammonia Technical data installation and use ir danfoss com 148R9645 ...

Page 2: ...01 Legal notice 3 Technical data 4 Ordering 4 Introduction 5 Features 5 Working principle 6 Working cycle 7 Air traps 8 Connection locations 9 Connection points 11 Installation 12 Electrical wiring 14 Light Indicators 16 Quick Startup 17 General display 17 Configuring using the LCD 18 Modbus RTU 20 Maintenance Service Disposal 27 Contents ...

Page 3: ...ong Ho Title Lead Design Engineer Signature Name Behzad Parastar Title Product Manager Danfoss only vouches for the correctness of the English version of this declaration In the event of the declaration being translated into any other language the translator concerned shall be liable for the correctness of the translation ID No 084R9456 This doc is managed by 500B0577 Revision No AA Page 1 of Danf...

Page 4: ...programmed MCX 15 x 084H5052 Pressure transmitter evaporator soldered AKS 32R x 060G3552 Compressor including Start relay box and Start and Run Capacitor x 123F2126 Compressor Hi temp sensor x 084N2003 Expansion valve R452A x 068U3881 Sight glass x 014 0191 Pressure transmitter R717 Threaded AKS2050 x 060G5750 Thermostat for crankcase heater control x 060L111166 Temperature sensor R717 AKS 21M x 0...

Page 5: ...e through e g a water bath Through the flanged opening the purger unit has access to the parameters from the ammonia plant required for full electronic control The unit runs automatically in 24 hour cycles checking for the presence of NC gases and if present removes the NC gases To regain and retain the design capacity of the main ammonia system and prevent future air accumulation it is highly rec...

Page 6: ...rough a continuous process As the NC gas concentration in the heat exchanger 12 increases the R452A heat exchanger pressure and temperature will simultaneously decrease The controller continuously monitors the R452A heat exchanger pressure as well as ammonia pressure and temperature When the R452A pressure reaches a predefined pressure difference when compared with the ammonia pressure temperature...

Page 7: ...e The purge valve will stay open until sufficient condensing ammonia is present to lift the R452A evaporating temperature above the upper threshold The compressor will continue running and if the temperature again decreases below the lower threshold a new purge will be performed This process will be repeated until the R452A heat exchanger temperature stays above the lower threshold for 45 minutes ...

Page 8: ...qualizing line makes the pressure in the receiver the same as in the compressor discharge line The pressure in the condenser outlet is lower due to the pressure loss in the condenser Since the condenser outlet pressure is lower than in the receiver it is therefore necessary to mount the condenser higher than the receiver and allow for a higher liquid level in the piping between the condenser and t...

Page 9: ...ust have its own liquid return drop leg c connected in parallel with the condenser s drop legs b When the purger is connected to the receiver i e solenoid px open the liquid level in the air purgers drop leg c will be equal to the receiver liquid level 3 when the purger is connected to the condenser outlet i e solenoid py open the liquid level will be equal to the liquid level in the condenser dro...

Page 10: ...a condensed in it Otherwise the air purger can flood and potentially purge ammonia liquid The purger liquid return leg c must always be mounted vertically or at minimum with a downward slope The solenoid valves at the connection points must never be activated at the same time Finalize purging at one location before switching to the next General Fig 8 Purger connections pv Drain Piping c must be ve...

Page 11: ...ts connected needs to be setup in the MCX controller after power up Both power and control wiring of the installed solenoid valves coils should take place prior to first power up Multi point purging NEVER HAVE MORE THAN 1 PURGE POINT OPEN AT A TIME Always close one purge valve before opening the next This is done by turning the purger unit power on label y02 and entering the number of actual purge...

Page 12: ...ting eyes and suitable lifting gear during installation unit weight 100 kg 220 lbs Install the unit on an even horizontal base 0 05 to 1 1 meter 2 to 43 in above a service platform with sufficient support and allowing the purger subframe to be bolted to the support see example in Fig 12 Maintain recommended distances in all directions Fig 12 to allow fan cooling and servicing Always leave the unit...

Page 13: ...with local or national regulations Note Prior to replacing the water in the water tank ensure that the purger is switched off and the shut off valve at the flanged purger inlet is closed Leave the unit in this condition for a period to allow the remaining gas in the piping to be dissolved released Watch out for bubbles Establish a procedure for regular checking the pH level and bubble pattern If c...

Page 14: ...ical hazards Authorized personnel only WARNING ON OFF Switch STANDBY RUN ERROR PURGING Key Lock COM AI1 AI2 ANALOG INPIT 1 6 COM AI7 AI8 AI9 AI10 5V ANALOG INPUT 7 10 DI 2H DI 2 COM DIGITAL INPUT 2 CAN CAN RJ MCX DI 3H DI 3 COM DIGITAL INPUT 3 DI 4H DI 4 COM DIGITAL INPUT 4 AO5 COM ANALOG OUTPUT 5 6 DIGITAL OUTPUT 15 AI3 5V 12V 5V AI4 AI5 L N POWER DI 17 DI 18 COM COM DIGITAL INPUT 17 18 DI 13 DI ...

Page 15: ...ction air fan Crankcase heater 24V DC 0V DC Power supply MCX15B Power supply Solenoid valves Condenser Fan 230V AC QS1 QM1 QM2 GD1 GD2 QM3 KL1 KL1 TR RC NO 1 C 1 NO 2 C 2 NO 3 C 3 NO 4 C 4 NO 5 C 5 N 1 L 1 NO 6 C 6 NO 7 C 7 NO 8 C 8 NO 9 C 9 NC 15 C 15 NO 15 NC 14 C 14 NO 14 NC 13 C 13 NO 13 NC 12 C 12 NO 12 NC 11 C 11 NO 11 NC 10 C 10 NO 10 9 8 1 2 3 4 5 6 7 10 11 12 13 14 17 18 15 16 Solenoid va...

Page 16: ... when alarm occurs Electrical wiring continued Fig 19 Controller MCX15B Inputs Light Indicators 21 22 23 19 20 5V DI COM DI 1 COM DI 1H DI 5 DI 6 DI 7 DI 8 12V AI 4 AI 1 AI 2 AO 1 AO 2 AO 3 D GND D CAN H R120 CAN L CAN GND CAN H ID CAN L CAN GND DI 9 DI 10 DI 11 DI 12 DI 13 DI 14 DI 15 DI 16 COM DI 17 DI 18 DI 2 DI 2H DI 3 DI 3H DI COM DI 4 DI 4H DI COM D GND D AO 4 L1 N 1 AI 5 AI 6 COM AO 5 COM A...

Page 17: ...n Enter R717 low Pres limit Actual R717 Pres Actual R452A Pres Upper Threshold for Purge Valve Lower Threshold for Purge Valve Actual R452A Temp Compressor on Not Used P717On _ bar Psat717 _ bar Psat452 _ bar VClseT _ C VOpenT _ C Tsat452 _ C P717On 6 5 bar Psat717 9 0 bar Psat452 8 7 bar VClseT 25 0 C VOpenT 30 0 C Tsat452 11 9 C P717On Psat717 Psat452 VClseT VOpenT Tsat452 6 5 9 0 8 0 25 0 30 0 ...

Page 18: ...isted by arrow up down Reset alarms Reset all actual alarms Log history View log history Clear log history Clear log history Login Password 200 N A Start Turn On Main swith ON Turn Off Main swith OFF Parameters Unit config Compressor 0 sec 100 sec 20 sec SDT Compressor start delay CM2 5 min 2000 min 45 min PDT Pull down time CM3 180 min 2000 min 1440 min CST Cycle time CM4 24 hours 768 hours 160 h...

Page 19: ...ment of the R717 line is out of range Compare pressure with another pressure reading and replace pressure transmitter if needed E04 Low temperature Indicates too low ambient temperature 10 C Too low ambient temperature Move the IPS to a higher ambient temperature E05 High temperature Indicates too high ambient temperature 120 C Too high ambient temperature Move the IPS to a lower ambient temperatu...

Page 20: ...Modbus Function Code Modbus Data Type Persistent Yes No GENERAL SETUP 3001 ON OFF 0 Main switch off 1 Main switch on 2 0 1 1 Enum 1 RW 3 6 Short Yes 3002 Activate Multipurger Switch on off multipurging functionality 0 No 1 Yes switch on multipurging functionality 2 0 1 1 Enum 2 RW 3 6 Short Yes 3003 Restore default parameters 0 No 1 Yes restore default parameters 2 0 1 0 Enum 2 RW 3 6 Short Yes GE...

Page 21: ...rging unit 0 NO 1 R12 2 R22 3 R134a 4 R502 5 R717 6 R13 7 R131b1 8 R23 9 R500 10 R503 11 R114 12 R142b 13 Invalid 14 R32 15 R227ea 16 R401A 17 R507A 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 R427A 35 R438A 36 R513A 37 R407F 38 R1234ze 39 R1234yf 40 R448A 41 R449A 42 R452A 3 0 42 42 Enum 5 RW 3 6 Sh...

Page 22: ...etting Man Start Recommend default setting only This engages 14 relays on the unit only for factory 0 NO 1 YES 3 0 1 0 Enum 2 R W 3 6 Short Yes STATUS VAR MCX DESIGN HOTSPOTS 1859 Reset Alarms Reset alarm 0 0 2 0 N A R W 3 6 Short Yes 8101 SystemOnOff Feedback from the main switch 0 32768 32767 0 Enum 1 Read only 3 Short No 8102 ValveStatus Feedback from the purge valve open closed 0 32768 32767 0...

Page 23: ...76 7 0 Minutes Read only 3 Long No 8129 Event6 Purge cycle event counts the accumative minutes that the purge valve has been open on a finished cycle 0 3276 8 3276 7 0 Minutes Read only 3 Long No 8131 Event7 Purge cycle event counts the accumative minutes that the purge valve has been open on a finished cycle 0 3276 8 3276 7 0 Minutes Read only 3 Long No 8133 PP1 The time percentage for this purge...

Page 24: ...AI3 Leads to shut down of IPS 8 0 0 1 0 AUTO R Read only 3 Long No 1901 09 Temp Sensor Fault Indicates no signal from temperature R452A sensor 0 0 1 0 AUTO R Read only 3 Long No 1901 10 BPL Sensor Fault Indicates no signal from pressure sensor R452a 0 0 1 0 AUTO R Read only 3 Long No 1901 11 BPH Sensor Fault Indicates no signal from pressure sensor R717 0 0 1 0 AUTO R Read only 3 Long No 1901 12 L...

Page 25: ... N A N A N A 1012 Not used N A 0 100 N A NO Read only N A N A N A 1013 Not used N A 0 100 N A NO Read only N A N A N A 1014 Not used N A 0 100 N A NO Read only N A N A N A DIGITAL INPUTS 1001 08 Status KL1 Compressor status KL01 0 Compressor off 1 Compressor on 2 0 1 1 N O Read only 3 Short No 1001 09 On Off Main switch input 0 Main switch off 1 Main switch on 2 0 1 1 N O Read only 3 Short No 1001...

Page 26: ... purge valve relay 2 0 1 N A N O Read only 3 Long No 1003 10 Green Status LED 2 0 1 N A N O Read only 3 Long No 1003 11 Yellow Status LED 2 0 1 N A N O Read only 3 Long No 1003 12 DO_Red Status LED 2 0 1 N A N O Read only 3 Long No 1003 13 ICFD_Valve ICFD relay solenoid valve 2 0 1 N A N O Read only 3 Long No 1003 14 Valve1 Purge point valve relay 2 0 1 N A N O Read only 3 Long No 1003 15 Valve2 P...

Page 27: ... Multipoint Single point purging from receiver 1 Close all supply lines from the purge points of the ammonia system Do not close any stop valve between IPS 8 and float valve Restart the controller to force pump down 2 Restart the controller to force pump down Wait 20 minutes 3 Wait 20 minutes 4 Stop the compressor by turning the compressor switch QM1 to the off position Stop the compressor by turn...

Page 28: ...28 BC306932151284en 000201 Danfoss DCS ms 2020 01 ...

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