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User Guide

Intelligent Purging System (IPS 8) Ammonia

BC344024774466en-000401 | 21

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 >

VALVE SETTINGS

3022

Max_PP

Used amount of purge
points - part of initial
setup

N/A

3/6

Short

Yes

UNIT CONFIG >

LIMITS SETTINGS

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

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

8116

ValveSetpoint

Temperature
threshhold for the
opening of the main
purge valve

-2147483648

2147483647

°C

Read

only

Short

8117

ValveClose

Temperature
threshhold for the
closing of the main
purge valve

-2147483648

2147483647

°C

Read

only

Long

8119

Event1

Purge cycle event -
counts the minutes
that the purge valve
has been open on a
finished cycle

-3276,8

3276,7

Minutes

Read

only

Long

8121

Event2

Purge cycle event -
counts the accumative
minutes that the
purge valve has been
open on a finished
cycle

-3276,8

3276,7

Minutes

Read

only

Long

Содержание 084H5002

Страница 1: ...danfoss com User Guide Intelligent Purging System IPS 8 Ammonia ir danfoss com 148R9653 Info for UK customers only Danfoss Ltd Oxford Road UB9 4LH Denham UK 230 V AC 60 Hz Other IPS 8 User Guide languages ...

Страница 2: ...chnical 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 ...

Страница 3: ...sign 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 Danfoss A S 6430 Nordbor...

Страница 4: ...smitter evaporator soldered AKS 32R x 060G3552 Compressor including Start relay box and Start and Run Capacitor x 123B2156 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 084N2003 Pressure switch for Fan x Contact ...

Страница 5: ...r 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 recommended to install ...

Страница 6: ...rocess 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 it prepares to purg...

Страница 7: ...ll 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 following the previo...

Страница 8: ... 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 the receiver b The li...

Страница 9: ...uid 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 drop leg b Fig 6 Purger...

Страница 10: ...herwise 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 vertical downward slop...

Страница 11: ...o 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 points in the progr...

Страница 12: ...all 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 off for at least 12 hours from finished installation to first time power up It is impo...

Страница 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 ...

Страница 14: ...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 14 DI 16 COM DIGITAL INPUT 13 16 DI 15 ...

Страница 15: ...ase 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 valve System running S...

Страница 16: ...lectrical 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 AO 6 COM COM AI 7 AI ...

Страница 17: ...rameters 4 Choose Unit Config 5 Choose Valve Settings 6 Enter the amount of purge solenoid valves connected to the IPS 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 Error Alarm Purge valve open Purge point 1 8 Main screen current informa on on IPS status Status of purging process and purging co...

Страница 18: ...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 hours PLT Endles...

Страница 19: ...4 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 temperature E05 High temperature Low R452a charge because of possible leak Locate and repair leak Evacuate Move the IPS to a lower ambient ...

Страница 20: ...on User Level Min Value Max Value Default Value Unit Type Read Write 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 N...

Страница 21: ...urge valve activations 0 2147483648 2147483647 0 N A Read only 3 Long No 8108 ComprTime Remaining time for compressor pull down for the actual purge pointr cycle 0 2147483648 2147483647 0 Minutes Read only 3 Long No 8110 COmprStartAfter The delay between the purging cycles 0 2147483648 2147483647 0 Minutes Read only 3 Long No 9901 Advanced Setting ResetMem Recommend default setting only All logged...

Страница 22: ...32767 0 Read only 3 Long No 8139 PP4 The time percentage for this purge point 0 32768 32767 0 Read only 3 Long No 8141 PP5 The time percentage for this purge point 0 32768 32767 0 Read only 3 Long No 8143 PP6 The time percentage for this purge point 0 32768 32767 0 Read only 3 Long No 8145 PP7 The time percentage for this purge point 0 32768 32767 0 Read only 3 Long No 8147 PP8 The time percentage...

Страница 23: ... 1 0 AUTO R Read only 3 Long No 1901 13 Hi temperature Indicates too high ambient temperature 120 C 0 0 1 0 AUTO R Read only 3 Long No 1901 14 Low pressure BPL Indicates too low R452a pressure 0 0 1 0 AUTO R Read only 3 Long No 1901 15 Hi pressure BPL Indicates too high R452a pressure 0 0 1 0 AUTO R Read only 3 Long No 1901 00 Low pressure BPH Indicates too low R717 pressure 0 0 1 0 AUTO R Read on...

Страница 24: ...larm General Alarm input 2 0 1 0 N O Read only 3 Short No 1001 11 LiquidAlarm Liquid Alarm input 2 0 1 0 N O Read only 3 Short No DIGITAL OUTPUTS 0 OFF 1 ON 1003 08 Compressor Compressor relay 2 0 1 N A N O Read only 3 Long No 1003 09 Valve Main 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 Rea...

Страница 25: ...oint 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 turning the compressor s...

Страница 26: ...26 BC344024774466en 000401 Danfoss DCS ms 2021 04 ...

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