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Fridgewatch 2100 Controller Mk4

Publication 3-58

Section 3

Page 108 of 152

Issue 1.1 : 01/08

If motor current display is used (S67 enabled) but current limiting is not
required, set S69 to a higher value than S67.

S70 P5 (0 to 1 V/4 to 20 mA signal analogue input 2 on 3MIO2 card)

for compressor 3: unused/current transformer ratio/motor line
current at 20 mA signal

Measured point P5 can be used to display motor current and provide the
current limiting function (internal current limiting). There are two different
methods:

0 to 1 V ac signal from a motor current transformer (CT).

Use a 1 Amp CT with a 1

Ω

(1 R 0) resistor connected across its

terminals, thus producing 1 volt across the Fridgewatch 2100 input
at the CT maximum rating. Set S70 = motor line current at 1 V ac
(equal to the CT ratio). Fridgewatch 2100 now displays motor
current as P5 and takes care of current limiting internally using the
current limits defined by S71 and S72.

4 to 20 mA signal from a motor soft-starter or inverter.

Fit a 50

Ω

shunt resistor across the Fridgewatch 2100 input and

set S70 = -1 x motor line current (not phase current) corresponding
to the 20 mA signal. The negative (-) sign instructs Fridgewatch to
scale motor current between 0 Amp when the signal is 4 mA to
ABS (S70) when the signal is 20 mA.

Set S70 = 0 if motor current display is not used. If current limiting is still
required this must be done via digital inputs from a remote contact
ammeter.

S71 P5 (compressor 3 current limit 1): inhibit loading (units: Amp)

With S70 enabled, S71 defines the motor current limit above which
compressor loading is inhibited.

NOTE: the value assigned to S71 Inhibit Loading must
normally be smaller than S72 Force Unload.

If motor current display is used (S70 enabled) but current limiting is not
required, set S72 to a higher value than S71.

S72 P5 (compressor 3 current limit 2): force unload (units: Amp)

With S70 enabled, S72 defines the motor current limit above which
Fridgewatch 2100 sends continuous unload pulses until the motor current
falls below this limit; this overrides the output from the PID algorithm or
external load/unload signals.

NOTE: the value assigned to S72 Force Unload must
normally be larger than S71 Inhibit Loading.

If motor current display is used (S70 enabled) but current limiting is not
required, set S72 to a higher value than S71.

S73 Maximum number of compressors that can run at any one

time

This setting enables the maximum number of compressors on a package
unit that are permitted to run simultaneously to be less than the number
of compressor physically installed on the unit. This provides a standby
facility should one compressor fail. S73 = 0 or equal to the actual
number of compressors on the unit allows all compressors to run at the
same time.

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Содержание Fridgewatch 2100

Страница 1: ...ewatch 2100 Controller Mk4 This publication is applicable to the following J E Hall International Compressors and Packages HallScrew 2000 Series Compressors HS 2018 HS 2024 HallScrew 2100 Series Compr...

Страница 2: ...oduced or transmitted in any form or by any means electronic or mechanical including photocopying recording or by any information storage or retrieval system without permission in writing from the cop...

Страница 3: ...remain connected to permit functional testing fault diagnosis and repair should only be undertaken by persons who are aware of the hazard and who have taken adequate precautions to avoid direct conta...

Страница 4: ...Starting and Stopping Compressors 25 5 4 Set Point Deviation 25 5 5 Master Slave Operation 26 5 5 1 Starting the Master Compressor 26 5 5 2 Starting and Stopping the Slave Compressor 27 5 5 3 Master...

Страница 5: ...essor Manual Control Only 68 8 9 Supervisor Keyswitch 68 9 Commissioning 70 9 1 Authority to Use the Supervisor Key 70 9 2 Checks to be Made Prior to Supplying Power to Fridgewatch 2000 70 9 3 Transdu...

Страница 6: ...thium Back up Battery 128 12 8 Maintenance Check List 128 13 Spares 129 13 1 Fuses for Mains Input 129 13 2 Fuse for Panel Anti condensation Heater if fitted Error Bookmark not defined 13 3 Fuses for...

Страница 7: ...Run Enable Signal 44 Fig 16 FCPS1 Power Supply Card and Wiring Connections 45 Fig 17 3SCOP1 Relay Outputs Card 46 Fig 18 Wiring Connections to 3SCOP1 Relay Outputs Card for Compressor 1 47 Fig 19 Wir...

Страница 8: ...Operating Mode Indication Using Setting S19 92 Table 9 Initial Load Values on Starting 96 Table 10 Transducer Transmitter Types and Ranges 99 Table 11 Swept Volumes of HallScrew Compressors 101 Table...

Страница 9: ...n immediate hazard with a high likelihood of personal injury or death if instructions including recommended precautions are not followed There is also a potential risk of damage to the product process...

Страница 10: ...handling electronic cards must be earthed in accordance with BS EN 100015 Part 1 1991 to the earth terminal on the Fridgewatch Controller or other suitable earthing point WARNING The earth bonding dev...

Страница 11: ...tection from the elements must be provided coverings should be selected and arranged to reduce the risk of condensation Fridgewatch contains programmed integrated circuits memory chips which are sensi...

Страница 12: ...detection does not rely on the program running in the microprocessor In common with conventional relay based control panels the signal to stop the compressor is derived from the electrical contacts o...

Страница 13: ...Fig 1 Multiple Compressors With Common or Individual Oil Separator Reservoirs 4 1 Construction The Fridgewatch 2100 Controller enclosure to IP43 IP55 available as an option is divided into two complet...

Страница 14: ...sor After restarting Fridgewatch returns to the previous mode of control If this was an auto start stop mode and there is a demand for duty Fridgewatch restarts the compressor subject to normal starti...

Страница 15: ...Fridgewatch 2100 Controller Mk4 Section 3 Publication 3 58 Issue 1 1 01 08 Page 15 of 152 Fig 2 Fridgewatch 2100 Mk4 Controller Mains Isolator 1 S 0 Supervisor Keyswitch...

Страница 16: ...REVIOUS MENU Return to previous menu level STOP COMPRESSORS ALL MODES Stop compressor ENTER Select the active menu item NAVIGATION BUTTONS In manual control mode start and load unload the compressor S...

Страница 17: ...g 4 Internal Layout of Fridgewatch 2100 Panel 3SCOP1 Cards refer to Fig 17 Earth Connecting Block FCPS1 Card refer to Fig 16 MCB Mains Isolator Thermistor Optor Sensor Conditioning Unit s Mounting Boa...

Страница 18: ...01 08 Fig 4 continued Internal Layout of Fridgewatch 2100 Panel Door Mounted Items Door to Lower Half of Enclosure Door to Upper Half of Enclosure RAMP4 Processor Card refer to Fig 20 ANP8 Display Ca...

Страница 19: ...imensions and Details of Cable Entries 360 mm 390 mm 420 mm Gland Plate 335 mm x 110 mm 40 mm Gland Plate 230 mm x 110 mm Mounting Hole 8 mm Diameter 5 mm 150 mm 187 mm 35 mm 1 Hole 20 mm Diameter Inc...

Страница 20: ...the compressor Solenoid valves in the pipe lines supplying and venting oil to either side of the capacity control piston are energised opened or de energised closed by Fridgewatch 2100 for a timed per...

Страница 21: ...g on the contact differential of the LVDT minimum and maximum slide valve position switches The relative size of load bands LOW and HIGH depends on the setting of the LVDT intermediate slide valve pos...

Страница 22: ...mode is selected The PID control algorithm allows Fridgewatch 2100 to be tuned to suit any type of control situation Each component of the PID algorithm makes a specific and variable contribution tow...

Страница 23: ...um Corrective Control Action Fridgewatch 2100 Applies Maximum Corrective Control Action Fridgewatch 2100 Applies Corrective Action in Proportion to the Size of the Error Set Point Measured Value Stead...

Страница 24: ...ional control alone If integral action time is too short hunting around the set point occurs Setting integral action time to its maximum value reduces integral action to such an extent that it has vir...

Страница 25: ...om loading On falling demand for duty Fridgewatch 2100 permits the modulated compressor to unload to minimum before stopping it and transferring capacity modulation to the compressor previously held a...

Страница 26: ...s already running the S8 Next Compressor Start Delay timer starts and expires as before However another compressor still cannot start until the measured value exceeds the set point start value by more...

Страница 27: ...er Slave Operation With a Fridgewatch 2100 Controller Controlling More than One Compressor Operator settings S12 Set Point Deviation to Start Next Compressor and S13 Set Point Deviation to Stop Next C...

Страница 28: ...ompressor starts Using this method the Fridgewatch 2100 monitors the chosen input and if it sees a rate of increase which exceeds early start value S15 it will start the compressor regardless of wheth...

Страница 29: ...ls below the stop value If a run enable signal has been implemented refer to Table 7 removing the run enable signal will stop the compressor Remote Auto Fridgewatch 2100 Proportional Integral and Deri...

Страница 30: ...lication when the controlled compressor reaches maximum capacity a further press of the button starts the next compressor in the running order Conversely on unloading when the controlled compressor re...

Страница 31: ...used to prevent overcooling the cooled medium Condenser pressure limiting can be used to avoid HP cut out trips by restricting compressor capacity when direct head pressure control methods such as co...

Страница 32: ...more takes priority for loading until it reaches maximum capacity after which capacity modulation reverts to the slave compressor In a multi compressor application when the limiting conditions pass th...

Страница 33: ...tlet line wired to the LVDT analogue input on the compressor 3MIO1 or 3MIO2 card Setting S63 must be set to 2 to indicate other analogue and settings S84 and S85 set to define the transmitter range Se...

Страница 34: ...1B CL2 Current Limiting for Compressor 2 CL2A CL2B Apply to Individual Compressors CL3 Current Limiting for Compressor 3 CL3A CL2B CLT Current Limiting Total for all Compressors CLT1 CLT2 CP Discharge...

Страница 35: ...logue inputs 1 and 2 located on the 3MIO1 input output card The standard Fridgewatch 2100 Controller permits temperature and or pressure transducers to be used though certain combinations are not poss...

Страница 36: ...3 6 1 2 Digital Outputs Fig 18 and Fig 19 illustrate the usual application for each digital output However if any digital output is NOT used for the purpose illustrated it may be used for a different...

Страница 37: ...Fitting 6 mm Compression Fitting Framework Gauge Valve 6 mm Gauge Line Tee Suction Pressure Gauge Wire to Fridgewatch Pocket Apply Heat Conductive Paste Inside Pocket Temperature Transducer Pipeline...

Страница 38: ...is derived from a transformer the common side of the secondary winding must be earthed NOTE centre tapped earthed type transformers MUST NOT be used with the standard Fridgewatch 2100 panel contact J...

Страница 39: ...compressors as displayed on the front panel Fig 4 shows the relative position of the cards In the wiring connection illustrations the terminal numbers are prefixed according to the position of the car...

Страница 40: ...rgise open when compressor capacity 50 de energise close when compressor capacity 50 x 1 for compressor 1 x 2 for compressor 2 x 3 for compressor 3 Wire economiser solenoid valves to 3SCOP1 relay outp...

Страница 41: ...LCC2 card to avoid interference caused by earth loops R R T Compressor 4 Fridgewatch 2000 or 2100 Controller LCC3 Module T R R T Compressor 3 Fridgewatch 2000 or 2100 Controller LCC3 Module T R R T C...

Страница 42: ...mode or off when the Supervisor Key is turned to the Locked position d Master mode is selected by switching the RAMP4 card digital input 4 closed Slave mode is selected by switching the RAMP4 card di...

Страница 43: ...44 138 145 139 146 143 237 142 238 144 239 147 137 137 147 2 and 5 Pair 0 5 mm 2 Screened Cable Compressor B Master Compressor A Slave RAMP RAMP 4 RAMP RAMP 4 Compressor A Master Compressor B Slave Ch...

Страница 44: ...239 5 Pair 0 5 mm 2 Screened Cable Compressor B Master Compressor A Slave RAMP RAMP 4 RAMP RAMP 4 141 140 140 141 137 147 147 137 Compressor A Master Compressor B Slave Changeover Switch 135 135 136...

Страница 45: ...for digital inputs and trip circuit FS3 protects mains input FUNCTION TERMINALS REMARKS Alarm Sounder o o K K 110 V or 240 V ac according to power supply NOTE when handling electronic cards the preca...

Страница 46: ...sue 1 1 01 08 7 2 3SCOP1 Relay Outputs Card Bottom entry to enclosure NOTE when handling electronic cards the precautions detailed in 2 1 Anti Static Precautions must be taken Fig 17 3SCOP1 Relay Outp...

Страница 47: ...the liquid line before the regulator feeding the economiser refer to Fig 12 Energise open when compressor capacity 50 de energise close when capacity 50 When using an LVDT for slide valve position S6...

Страница 48: ...Fig 12 Energise open when compressor capacity 50 de energise close when capacity 50 When using an LVDT for slide valve position S63 3 or 4 refer to S116 and S117 descriptions Capacity Control Solenoi...

Страница 49: ...V 24V J2 Display Connector on back of card 24V Tab Connectors For Power Supplies 0V 0V J1 Connector For I O System 1 Set jumpers as shown NOTE when handling electronic cards the precautions detailed i...

Страница 50: ...1 01 08 ANP8 Display Card For display details refer to Fig 3 Display NOTE when handling electronic cards the precautions detailed in 2 1 Anti Static Precautions must be taken Fig 21 ANP8 Display Card...

Страница 51: ...silences alarm sounder only does not reset alarm Not available DO NOT use this terminal Off contacts open On contacts closed Terminal Port RS232 9600 baud 8 bit no parity 1 stop bit o o o CC CI CO CC...

Страница 52: ...1 GA Temperature ZB 1 P2 Analogue Input 2 GB Pressure or Temperature ZC 1 P4 Analogue Input 3 4 to GC 20 mA for Slide Valve LVDT ZD 1 P5 Analogue Input 4 GD Compressor Motor Current After connecting t...

Страница 53: ...starters or inverters which provide a 4 to 20 mA signal corresponding to motor current fit a suitable 50 50R shunt resistor across Fridgewatch 2100 input and set S64 1 x motor line current not phase c...

Страница 54: ...ays a trip event code E4 Low Oil Level in Separator Reservoir Oil Differential Pressure Switch ODPS or Oil Flow Switch o o 121 122 Switch contacts open on fault condition internally timed by Fridgewat...

Страница 55: ...ital Inputs From Other Control Device S19 0 Volt free contacts o o o o o o 135 136 137 138 139 140 137 with operator setting S14 Run Enable Signal Required 1 becomes a run enable signal contacts close...

Страница 56: ...atch 2100 or 2000 Controller in Master Slave Configuration Digital Outputs to Another Fridgewatch 2100 or 2000 Controller in Master Slave Configuration S19 1 o o o o o o o 141 142 143 144 145 146 147...

Страница 57: ...tput Card for Compressors 2 and 3 J10 J12 J14 J16 J18 J20 Connect jumpers J10 J12 J14 J16 J18 J20 and J25 as shown J25 0 1 ZA 1 P4 Analogue Input 1 4 to GA 20 mA for Slide Valve LVDT ZB 1 P5 Analogue...

Страница 58: ...essor 1 are marked 260 and 261 and for compressor 3 marked 360 and 361 Check jumper connection J10 on the 3MIO2 card refer to Fig 25 Thermistor trips relay contacts open on fault condition Fridgewatch...

Страница 59: ...als x19 and x20 Opto sensor interface unit oil level switch contacts open on fault condition internally timed by Fridgewatch 2100 to prevent nuisance tripping Fridgewatch 2100 displays a trip event co...

Страница 60: ...and x28 Slide Valve Position Switches on HallScrew 2100 or 2000 Series Compressors 24 V dc o o o o x29 x30 x31 x32 Slide valve position switches on HallScrew 2100 series compressors Can also be used...

Страница 61: ...evice x41 242 342 243 343 248 249 250 Link to terminal 249 if driving relays One or more compressors at maximum load Two or more compressors at maximum load Two or more compressors running Three compr...

Страница 62: ...pressure the actual set point value and the current operating mode Compressor number Fridgewatch 2100 displays 1 2 or 3 compressors derived from the value assigned to S42 Status waiting available sta...

Страница 63: ...Config Settings Info Measured Points Points Comp 1 Comp 2 Comp 3 P01 Temp C 5 50 P02 Press bar g 10 00 P03 Hrs Run x10 27 Operator Settings Operator Settings current date and time S01 Set Point bar g...

Страница 64: ...nts which can be displayed 8 4 Operator Settings and Configuration Settings These settings pages are accessed via the Contents page Use the and navigation buttons to scroll down and across to select t...

Страница 65: ...nguish the TRIP indicator and clear the event code from the Home page display 8 8 Operator Input Buttons There are ten input buttons located below the display refer to Fig 3 Display Details When alloc...

Страница 66: ...on the master Fridgewatch Controller stops both the master and slave compressors Pressing this button on the slave Fridgewatch Controller only stops the slave compressor After pressing the STOP COMPR...

Страница 67: ...a short delay before the compressor is seen or heard to start On the Home page display the message Starting appears next to the Status heading With manual capacity control selected after S52 Oil Inje...

Страница 68: ...rder reaches minimum capacity a further press of the button stops the slave compressor and transfers control to the master compressor Lower Setting Value The other function of the button is to lower t...

Страница 69: ...implications of their actions make the plant vulnerable to damage with the associated risk of injury to personnel The Supervisor Keyswitch safeguards against this eventuality Changes to settings canno...

Страница 70: ...r starting the plant for the first time and for the initial period of operation Changing Configuration and Operator Settings and the Operating Mode are governed by use of the Supervisor Key 9 1 Author...

Страница 71: ...ttons will operate The panel is unlocked by changing the value of Configuration Setting S41 to a non zero value CAUTION In unlocking the Fridgewatch 2100 panel the commissioning engineer must take res...

Страница 72: ...ly Use the and buttons to view the appropriate setting s In common with the Contents page each individual list is arranged as a loop You can scroll upwards back through the list as well as downwards f...

Страница 73: ...displayed even though they may contain zero values The least significant integer or decimal space is now flashing raises value 2 5 0 0 0 moves to the next digit on the left lowers value moves to the n...

Страница 74: ...efer to Fig 29 Looking at or Changing Operator Settings The exception to this rule is setting S19 Master Slave Connected which can only be changed when Fridgewatch 2100 is in off mode a In order to ch...

Страница 75: ...scroll upwards back through the list as well as downwards forward through the list Insert the key into the Supervisor Keyswitch and turn to the Unlocked position Operator Settings current date and ti...

Страница 76: ...7 Changing the Operating Mode Follow the steps described in Fig 30 Changing the Operating Mode If this is the first start for reasons of safety start the plant in manual start stop manual capacity con...

Страница 77: ...in the top line of the display Press the HOME PAGE button Note that the selected operating mode appears in the display Fig 30 Changing the Operating Mode c Restart the plant in the required operating...

Страница 78: ...to clear the display If more than one information only event is present at the same time the Home page shows them in turn If a trip occurs while there was an event present the display cycles showing t...

Страница 79: ...load during the start sequence Start aborted Comp 1 E08 Compressor Failed to Unload SP 3 50 bar or C Act 8 87 bar or C Mode AA E08 Compressor Failed to Unload appears in the Home Page display alterna...

Страница 80: ...dged Fig 31 continued Identifying and Clearing Trip Events Reason for Normal Stop Reason for Trip 10 3 Event Codes Description This part of the manual provides a full description of each event code wh...

Страница 81: ...enish if necessary Check the operation of the oil low level opto sensor refer to the plant instruction manual For low stage booster applications that do not monitor oil level check that terminals 119...

Страница 82: ...ode is implemented for all applications Cause The Fridgewatch 2100 Controller has tried and failed to return the compressor slide valves to minimum load i e the minimum position switch contacts are op...

Страница 83: ...ture Trip Compressor Healthy Off Manual Reset This event code is implemented if P4 is enabled for limiting and trips by setting Configuration Setting S86 to a non zero value E14 is prefixed by a lette...

Страница 84: ...ations Cause 1 The compressor provides Fridgewatch 2100 with a running signal to indicate that it is operating If the running signal disappears other than when Fridgewatch signals the compressor to st...

Страница 85: ...off manual reset if P2 is being used for a control limiting or trip function Cause Failure of the transducer or faulty field wiring Remarks Check the calibration of the transducer check field wiring...

Страница 86: ...he calibration of the transducer check field wiring connections E47 P5 Motor Current Input Over range or Failed This event code is implemented when a current transformer with shunt resistor or 4 to 20...

Страница 87: ...r Settings should be recorded in 16 Appendix 3 Settings Record Before making alterations to S5 Proportional Band S6 Integral Action Time or S7 Derivative Action Time it is essential to have read and u...

Страница 88: ...to the compressor Using too small a proportional band setting will cause instability as small changes in the measured value give rise to large changes in compressor capacity On the other hand making...

Страница 89: ...onds that the currently controlled compressor i e the compressor whose capacity is being modulated must run continuously at maximum load before the next lag compressor in the running order priority is...

Страница 90: ...mpressor and prevents restarting until the signal is restored NOTE values of 4 to 7 for setting S14 are for special applications only but are described here for completeness S14 4 the run enable signa...

Страница 91: ...lected Fridgewatch 2100 will ignore this compressor and prevent it flagging unnecessary trips for example while the compressor is being worked on WARNING Note however that for safety reasons this is N...

Страница 92: ...e can be used as the controlling parameter or a combination of both types for example start on temperature stop on pressure control on temperature However different parameters cannot be used for the s...

Страница 93: ...e set point stop value set is in force Either P1 or P2 can be used for automatic start control refer to S47 description Whichever point is chosen applies to both the No 1 and No 2 start values refer t...

Страница 94: ...and S3 display the current value set created by interpolation between the No 1 and No 2 value sets In this condition changes to the No 1 and No 2 value sets can only be made by directly changing the v...

Страница 95: ...day to Friday inclusive or if the changeover between No 1 and No 2 sets is switched externally through digin 3 on the RAMP4 processor card S29 is only used when two different start value set point sto...

Страница 96: ...attached directly to Fridgewatch 2100 and printed output is required or it is required to print a list of settings values or download the list to a laptop PC refer to c Restart the plant in the requi...

Страница 97: ...tic information output reason for current trip or if no current trip the last trip S39 displays the number of the Event Code of the most recent trip refer to 10 Event Codes The value of S39 includes t...

Страница 98: ...y set to 1 but in the event of more than one package unit other inputs are permitted For example for two package units each with three compressors S42 for the first unit would be set to 1 to display c...

Страница 99: ...2 to RANGE 2 symmetrical about zero With a 5 shunt resistor fitted across the terminals 2 Fridgewatch 2100 displays RANGE 2 0 0 RANGE 2 at 0 mA at 10 mA at 20 mA 0 mV across Fridgewatch 2100 terminal...

Страница 100: ...liaries to start and provide a running signal to Fridgewatch 2100 If an auxiliaries running signal is not provided before S50 seconds expire Fridgewatch terminates the start sequence and displays a tr...

Страница 101: ...53 S56 Set hours run on compressor 1 units hours run x 10 Should the battery back up fail for some reason or it is necessary to replace the RAMP4 Processor Card it will be necessary to re enter the ho...

Страница 102: ...ridgewatch Highway Two communication protocols are supported the proprietary Fridgewatch protocol or Modbus RTU protocol If the value of S61 is positive or zero the Fridgewatch 2100 Controller configu...

Страница 103: ...Calibration of P4 is done in Fridgewatch software i e Fridgewatch 2100 needs to be told when the 4 to 20 mA signal corresponds to minimum and maximum slide valve position This facility is provided by...

Страница 104: ...EPARATE SOLENOID VALVES 2 OFF 1 NC S62 0 CAPACITY CONTROL ACTION 3 SOLENOID A X90 X91 3 SOLENOID B X92 X93 Load compressor Energise De energise Unload compressor De energise Energise 3100 New Series H...

Страница 105: ...i Not fitted 3100 New Series HS 3118 to HS 3122 3200 Series HS 3216 to HS 3220 4200 Series HS 4221 to HS 4223 4 to 20 mA signal from HB Linear Variable Displacement Transducer HBLVDT Not fitted SLIDE...

Страница 106: ...s on other compressors to provide these contacts 2 For multiple compressors connected to one Fridgewatch 2100 panel using LVDT 4 to 20 mA signals on P4 for slide valve position if ONE compressor has n...

Страница 107: ...h 2100 input at the CT maximum rating Set S67 motor line current at 1 V ac equal to the CT ratio Fridgewatch 2100 now displays motor current as P5 and takes care of current limiting internally using t...

Страница 108: ...mA Set S70 0 if motor current display is not used If current limiting is still required this must be done via digital inputs from a remote contact ammeter S71 P5 compressor 3 current limit 1 inhibit...

Страница 109: ...y of the month Day of the month as a numerical value 1 to 31 S77 Month Calendar month as a numeric value 1 January 5 May 9 September 2 February 6 June 10 October 3 March 7 July 11 November 4 April 8 A...

Страница 110: ...when the compressor starts Other circuits are brought into operation as the demand for refrigeration increases when the compressor loads to 50 say or for a multi compressor application when the second...

Страница 111: ...put of 20 mA Configuration Settings S86 to S89 Limiting and Trips on P4 3MIO1 and 3MIO2 Cards 4 to 20 mA Channels S86 P4 limiting trip unused defined This setting defines whether the P4 analogue input...

Страница 112: ...fined by S84 S85 With S86 enabled S87 defines the temperature or pressure limit beyond which compressor loading is inhibited this overrides the output from the PID algorithm or external load unload si...

Страница 113: ...t countdown continues if the latter expires before limiting clears the next compressor is started During commissioning It is important to set the value of S86 appropriately for the system If too many...

Страница 114: ...unload limit threshold value has been crossed This is to prevent too severe unloading occurring if there is a delay between unload pulses being sent and the actual measured value responding For examp...

Страница 115: ...n practice Configuration Settings S94 to S97 Limiting and Trips on P2 3MIO1 Card Analogue Input 2 Pressure Channel NOTE S94 S95 S96 and S97 may be used to provide Low Limits only i e when the measured...

Страница 116: ...current being applied to this channel which would otherwise provide limiting unless the package unit is in manual start stop manual capacity control mode Fridgewatch 2100 will trip the compressor In...

Страница 117: ...e standing pressure at the transducer will not exceed 10 bar g when the compressor is to start should this occur a 10 bar transducer would cause a trip event code E42 P2 Pressure Input on 3MIO1 Card O...

Страница 118: ...values of the Load Pulse Duration S101 or S103 or S105 as appropriate so that when running under normal operating suction and discharge gauge conditions a reasonable number of pulses are required to m...

Страница 119: ...s for example flow switches can momentarily break under normal no fault situations S100 is designed to prevent these fleeting breaks from stopping the plant If S100 is set from 1 to 10 seconds this ti...

Страница 120: ...a value of 3 or 7 The compressor cannot run unless the enable signal is available i e interlock 137 140 closed If the operator changes S14 to 0 1 or 2 when the Supervisor Key is returned to the Locked...

Страница 121: ...cted across terminal x88 x89 switches ON at the S116 value switches OFF at the S117 value NOTE the value assigned to S116 switch ON value must be larger than the S117 switch OFF value otherwise the ec...

Страница 122: ...controllable pressure source Necessary pipes and couplings Potentiometer trimmer or instrument screwdriver Refer to the 3MIO1 and3MIO2 input output card illustrations in Fig 23 and Fig 25 Calibrate th...

Страница 123: ...even temperature throughout the mixture Avoid contaminating the mixture with salts as this will alter the temperature at which the ice melts Container filled with clean warm water at approximately 40...

Страница 124: ...the transducer or interconnecting wiring is probably defective i Record calibration details on a record sheet 12 3 Calibration of Motor Current a Set Fridgewatch 2100 to commissioning mode S36 1 b St...

Страница 125: ...ew series 3200 and 4200 series compressors may be fitted with an HBLVDT that has no 4 to 20 mA signal calibration on the LVDT For these applications S63 is set to 4 If this is the case use the procedu...

Страница 126: ...d Fridgewatch automatically returns S36 0 when the minimum calibration is fixed CALIBRATION Max SVP 4011 Supervisor Mode to Start Calibration Turn Key to Normal to Save Calibration Change Operator Set...

Страница 127: ...plant Turn off the power supply to the Fridgewatch 2100 by turning the main isolator on the lower control panel door to the off position CAUTION Never remove or replace an electronic card with the Fri...

Страница 128: ...output voltage against the values in Table 1 If the voltage is within the limit check the battery voltage every year until it needs replacing Fit a new battery as follows a Carry out steps a to e in...

Страница 129: ...E HALL PART NUMBER RAMP4 E50 Processor card with FLASH EPROM memory Fig 20 7876 328 ANP8 E51 Display card Fig 21 7876 329 1 3MIO1 E61 Compressor 1 I O card Fig 23 7876 331 3MIO2 C40 Compressor 2 and...

Страница 130: ...trip on P1 E12 S90 to S93 inclusive 3MIO1 Anin 1 101 104 Read display and scale S44 and S45 Define P2 as the Set Point and or Start Value and or Stop Value S46 to S48 inclusive Set Point Start Value S...

Страница 131: ...essor lost running signal E34 Aux Cond Pump Lost Running Auxiliaries condenser cooling water pump lost running signal E35 to E40 Not used E41 P1 Temp 3MIO1 OR Fail P1 temperature input on 3MIO1 card o...

Страница 132: ...3MIO1 Anin 3 151 154 E14 Trip Manual S63 and S84 S89 3MIO2 Anin 1 x01 x04 E15 to E23 Not used E24 Trip Manual 111 112 E25 to E29 Not used E30 Trip Manual S50 E31 and E32 Not used E33 E34 Trip Manual...

Страница 133: ...s values should be noted There should be no need to make changes to Configuration Setting values unless physical alternations are made to the plant NOTE always ensure that the settings record is kept...

Страница 134: ...t Comp Start Delay Next compressor start delay S9 Next Comp Stop Delay Next compressor stop delay S10 Hold Compressor at 50 Hold last running compressor at 50 S11 Enable UL of Max Next Enable unload o...

Страница 135: ...or C S4 min 0 default 0 max 3 S5 min 0 1 default 2 0 max 100 0 bar g or C S6 min 0 default 300 max 9990 second S7 min 0 default 15 max 9990 second S8 min 0 default 300 max 3600 second S9 min 0 defaul...

Страница 136: ...time when to switch from No 1 to No 2 start value set point stop value set S28 SP Set 2 1 Switch Time The time when to switch from No 2 to No 1 start value set point stop value set S29 Use No 2 SP se...

Страница 137: ...ar g or C S23 min 99 90 default 2 00 max 80 00 bar g or C S24 min 99 90 default 2 00 max 80 00 bar g or C S25 min 99 90 default 1 00 max 80 00 bar g or C S26 min 99 90 default 1 00 max 80 00 bar g or...

Страница 138: ...lect P1 or P2 S47 Start Variable P1 or P2 Start variable select P1 or P2 S48 Stop Variable P1 or P2 Stop variable select P1 or P2 S49 Starts Hour Starts per hour S50 Auxiliaries Start Time Auxiliaries...

Страница 139: ...4 S45 min 5 default 10 max 500 bar g or C S46 min 1 default 2 max 2 S47 min 1 default 2 max 2 S48 min 1 default 2 max 2 S49 min 1 default 4 max 8 1 hr S50 min 2 default 10 max 900 second S51 min 2 de...

Страница 140: ...P5 compressor 1 current limit 2 force unload S67 P5 I P 4 3MIO1 CT Ratio C2 P5 0 to 1 V 4 to 20 mA signal analogue input 2 on 3MIO2 card for compressor 2 unused current transformer ratio motor line c...

Страница 141: ...x 26 S62 min 0 default 0 max 2 S63 min 0 default 0 max 4 S64 min 3000 default 0 max 3000 S65 min 0 default 0 max 3000 Amp S66 min 0 default 0 max 3000 Amp S67 min 3000 default 0 max 3000 S68 min 0 def...

Страница 142: ...ssor S84 P4 4mA Calibration P4 transmitter reading at 4 mA S85 P4 20 mA Calibration P4 transmitter reading at 20 mA S86 P4 Limiting Trip Used P4 limiting trip unused defined S87 P4 Hold Limit P4 limit...

Страница 143: ...max 59 minute S81 min 0 default 0 max 1 S82 min 0 default 0 max 120 S83 min 0 default 0 max 1 S84 min 200 0 default 0 0 max 200 0 bar g or C S85 min 200 0 default 100 0 max 200 0 bar g or C S86 min 1...

Страница 144: ...LVDT or slide valve position switches S100 Auxiliaries Lost Run E34 Nuis Auxiliaries lost running signal E34 nuisance trip delay S101 Load Pulse Comp 1 Load pulse duration on compressor 1 S102 Unload...

Страница 145: ...t 0 00 max 99 90 bar g or C S98 min 0 default 0 max 100 S99 min 0 default 0 max 100 S100 min 0 default 0 max 30 second S101 min 0 05 default 1 00 max 1 00 S102 min 0 05 default 1 00 max 1 00 S103 min...

Страница 146: ...2100 CONFIGURATION SETTINGS S41 S117 S113 Stop Bits Stop Bits S114 Parity Parity S115 P4 LVDT Min Load Value P4 value for minimum load S116 Econ Sol On At LVDT Value Economiser solenoid valve energis...

Страница 147: ...ue 1 1 01 08 Page 147 of 152 OPERATOR SETTING INPUT VALUES S RANGE DEFAULT UNIT COMPRESSOR 1 COMPRESSOR 2 COMPRESSOR 3 S113 min 1 default 1 max 2 S114 min 0 default 2 max 2 S115 min 10 default 10 max...

Страница 148: ...ls the compressor to stop 1 If fitted depends on the application Concluded on next page Fig 34 Compressor Start up Timing Diagram If slide valve s not at minimum load continue minimum load signal for...

Страница 149: ...tart up load MAID CMS obtains running state via comms Wait until stabilisation time or ODPS delay time expires whichever is longer Start up complete Accept load and unload signals from PID algorithm r...

Страница 150: ...Fridgewatch 2100 Controller Mk4 Publication 3 58 Section 3 Page 150 of 152 Issue 1 1 01 08 18 Index...

Страница 151: ...Fridgewatch 2100 Controller Mk4 Section 3 Publication 3 58 Issue 1 1 01 08 Page 151 of 152 This page intentionally blank...

Страница 152: ...or by any means electronic or mechanical including photocopying recording or by any information storage or retrieval system without permission in writing from the copyright holder The copyright in th...

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