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Elstat ems75 Sub-Zero, Manual

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Statistics include door opening, average temperatures and activity counts.
The EMS controller then scrolls through the statistics pausing for 20 seconds at each statistic before
returning to normal operation.
The 3-digit display can show values from 000 to 999.
For values of 1000 and above, the display shows the value as a rounded decimal number. For
example, 1.1 represents 1100, 1.2 represents 1200, and so on.

Display

Statistic

Description

Activity
frequency

Value of the activity frequency

AF

parameter.

Possible values are: 0, 1, 2 or 3.
(0 = low, 2= high and 3 = automatic)

Average
temperature

Average temperature
measured by the
appliance sensor
during the last 24 hours.

Compressor cycles

Average number of
compressor cycles per day (24 hour period) during the past 7 days (7 x
24 hour
periods).
Note that the average is
a moving average.

Compressor
runtime

Total number of hours that the
compressor has run since the EMS controller was first
powered up or since the last full reset.

Door
openings

Average number of door openings per day (24 hour period) during the
past 7 days (7 x 24 hour periods).
Note that the average is
moving average.

Highest
temperature

Highest temperature
measured by the
appliance sensor
during the past 24 hours.

Lowest
temperature

Lowest temperature
measured by the
appliance sensor during the last 24 hours.

Motion counts

Average number of motion counts per day (24 hour period) during the
past 7 days (7 x 24 hour periods).
Note that the average is
moving average.

Saving
temperature
disable

Value of the standby

temperature disable

PEr

parameter.

Possible values are: OFF or ON.
OFF = Standby temperature disable is switched off.
ON = Stanby temperature
disable is switched on.

31 of 86

27 February 2014

Summary of Contents for ems75 Sub-Zero

Page 1: ...ems75sz Sub Zero Firmware U09 n05 27 February 2014 www elstatgroup com ...

Page 2: ...3 10 Control display module 13 3 11 How to mount the control display module 15 3 12 External control display module electrical connections 16 3 13 Internal control display module electrical connections 17 3 14 Environmental ratings 17 4 User guide 18 4 1 Power up sequence 18 4 2 Function buttons ems sub zero 18 4 3 Indicators 19 4 4 Display codes 19 4 5 What are the menus 20 4 6 How to access the ...

Page 3: ...sensor 51 7 5 How to mount the evaporator sensor 51 7 6 Door switch 52 7 7 How to mount the door switch 52 7 8 How to mount door switches on double door coolers 53 7 9 Motion sensor ems75sz 54 7 10 Motion sensor 55 7 11 How to mount a remote motion sensor 55 8 How to troubleshoot ems75sz 57 8 1 Troubleshooting 57 8 2 How to check that EMS controllers are working correctly 57 8 3 How to troubleshoo...

Page 4: ...val dE 73 9 22 Defrost duration dd 73 9 23 Defrost method dF 73 9 24 Defrost termination method dtF 74 9 25 Fan cycle on FCO 74 9 26 Fan cycle off FCF 74 9 27 Display stability d2 75 9 28 Buzzer enable b0 75 9 29 Buzzer duration b1 76 9 30 Alarm delay Ad 76 9 31 Activity frequency AF 76 9 32 Motion sensor enable Sn 77 9 33 Saving temperature disable PEr 77 9 34 Learning period LP 77 9 35 Display d...

Page 5: ...h as l Single door coolers l Double door coolers l Open front coolers l Vending machines l Sub zero beer coolers 1 1 About this reference guide The purpose of this guide is to explain in detail all information regarding Elstat controllers including the user interface parameters accessories and troubleshooting Complimentary information is also available from Elstat such as accessory lists accessory...

Page 6: ...Elstat products have been designed to minimise any risks associated with water ingress and all con trollers are IPX5 certified The OEM or installer is responsible to ensure that local country laws and regulatory requirements are met 5 of 86 27 February 2014 ...

Page 7: ...s Serving temperature Appliance sensor measures the air temperature of the refrigeration compartment Self learning determines when the product should be at the ready mode temperature the optionalserving temperature or the saving mode temperature Refrigeration alarms Refrigeration systemalarms can alert to possible cooling problems and an optionalcondenser sensor can alert to problems such as block...

Page 8: ...e control unit and the relays to switch the following cooler components Feature Description Compressor relay Switches the compressor to manage the temperature of the refrigeration com partment Evaporator fan relay Switches the evaporator fan to minimize heat transfer to products when the com pressor is not running Auxiliary relay Switches a defrost heater to a solenoid valve for hot gas defrosts L...

Page 9: ...s 3 3 2 LED indicators Indicator Function Colour Compressor On when the compressor is running Green Evaporator fan On when evaporator fan is running Red Saving temperature disable On if the saving mode temperature is disabled The controller maintains ready mode temperature at alltimes Red Motion On when motion is detected Red 3 4 ems75sz relay ratings The table below details the relay ratings of t...

Page 10: ...5 Temperature input ranges The table below shows the temperature input ranges of the EMS sub zero controllers for each sensor type Sensor Input range ºC Input range ºF Appliance sensor 10ºC to 23 3ºC 0 5ºC 14ºF to 74ºF 1ºF Condenser sensor 50ºC to 125ºC 5 0ºC 122ºF to 257ºF 10ºF Evaporator sensor 30ºC to 15ºC 0 5ºC 22ºF to 59ºF 1ºF Note l The NTC thermistor fromElstat is rated at 35ºC to 125ºC 31º...

Page 11: ...o interface cable of the controldisplay module The power supply module must be mounted vertically with the cables exiting vertically downwards The power supply module has an Ingress Protection IP rating of IPX5 which means the power supply module is protected against water jets Caution l The power supply module must be located in a non refrigerated area of the cooler The power supply module must n...

Page 12: ...following characteristics l Head maximumdiameter 7 8mm 0 31in and minimumdiameter 6 2mm 0 24in l Thread maximumdiameter 4 8mm 0 19in The screws must be tightened to a maximum torque of 0 5Nm 0 37lb f ft Caution l Using rivets to mount the power supply module invalidates the warranty Cable routing to the EMS controller is critical as water can trace or follow the cable downwards Therefore immediate...

Page 13: ...brating components Secure cable routing looms with clips where ever possible 3 9 1 Power supply module dimensions The dimensions of the fixing holes are shown below The following is an example of the Power Supply Module mounted but not connected 12 of 86 27 February 2014 ...

Page 14: ... to be mounted on the cooler with the display visible to outlet customers and includes an integrated motion sensor For example mount in the header panel of the cooler l The internalvariant is designed to be mounted within the cooler cabinet and does not have an integrated motion sensor For example mount into an internalheader panel The ems75sz controller display module is available in two styles a...

Page 15: ...troller display modules CDMs are made fromfood grade materials and safe for internal installation l The controldisplay module has an IP rating of IPX5 protection against water jets Caution 14 of 86 27 February 2014 ...

Page 16: ... and is secured using the fitted clips The aperture dimensions are shown below To mount the control display module remove the retaining clip and insert the control display module into the aperture as shown below Then place the retaining clip into position as shown below Finally secure the retaining clip as shown below and ensure that the control display module is held firmly in position 15 of 86 2...

Page 17: ...ntrol display module electrical connections The electrical connections of the external variant control display module as follows Label Description Connectors 1 Interface cable to power supply module 2 Parameter programming port 3 aux Evaporator sensor 4 door Door switch 5 ht Condenser sensor 6 app Appliance sensor 16 of 86 27 February 2014 ...

Page 18: ... has a micro connector 3 14 Environmental ratings The table below details the general characteristics of the ems75sz Characteristic Power supply module Control display module IP rating IPX5 IPX4 Maximum operating tem perature 55ºC 131ºF 55ºC 131ºF Minimumoperating temperature 0ºC 32ºF 0ºC 32ºF Housing material Black polycarbonate Black polycarbonate Before beginning installation remove all protect...

Page 19: ...ws the appropriate display code For example the temperature or the word USE 4 2 Function buttons ems sub zero The EMS controller buttons access the EMS controller menus to view parameter values reset the EMS controller and to run test routines The EMS controller buttons perform the following functions Button Name Function end user Function service engineer Defrost Starts a defrost cycle Use as par...

Page 20: ...that EMS controllers are working correctly on page 57 Saving mode EMS controllers keep products at the saving mode temperature unless the saving temperature is disabled The saving temperature LED shows whether the saving mode tem perature is disabled The cooler lights are off unless the light delay Ld parameter keeps the lights on for a short period after the EMS controller switches to the savingm...

Page 21: ...ion systemfailure rSF alarms on page 62 Alarm Appliance sensor failure See How to troubleshoot temperature sensor alarms on page 63 Alarm Condenser sensor failure Alarm Evaporator sensor failure 4 5 What are the menus The table below describes the EMS controller menus Use the Down button to scroll through the menu and the Set button to select Menu Display Description Parameter list Displays the pa...

Page 22: ...a unique sequence of button operations The password is supplied to OEMs installers and service engineers separately Step Action Display 1 Press and hold the Set button 2 The EMS display shows 3 Press the Set button four times x 4 4 Press the Up button once x 1 5 Press the Down button twice x 2 6 Press the Defrost button twice x 2 7 The EMS display shows You have successfully entered the EMS menu 4...

Page 23: ...ge 67 4 See Calibration 1 CA1 on page 68 5 See Calibration 2 CA2 on page 68 6 See Saving set point SSP on page 68 7 See Saving differential Sd on page 69 8 See Freeze up protection dtt on page 69 9 See Fan set point FSP on page 69 10 See Condenser high temperature Ht on page 70 11 See Defrost activation temperature ddt on page 70 12 See Defrost termination temperature dtd on page 71 13 See Compres...

Page 24: ...See Saving temperature disable PEr on page 77 31 See Learning period LP on page 77 32 See Display dIS on page 78 33 See Marketing mode Ar on page 78 34 See Defrost heater dHr on page 78 Sub zero exclusive parameter 4 8 How to run the test routine tst The test routine tests the following l Allload relays l Analogue inputs temperature sensors and door switch l Motion sensor Should a problem be suspe...

Page 25: ...t menu 6 The EMS display shows 7 Press the Set button to test the seven segment display 8 The EMS display shows 9 Press the Set button to start the relay test 10 The EMS display shows 11 Press the Down button to start the relay test 4 8 1 The relay test Button Display Test Check Compressor relay Compressor is running and compressor LED is on Light relay Cooler lights are on 24 of 86 27 February 20...

Page 26: ...frost button together 13 The EMS display shows 14 Press the Down button to begin the Heater relay test 4 8 2 The heater relay test Button Display Test Check Heater relay Heating element or solenoid valve switches on Relay off Relays are off Note To switch off the relays that are on press the defrost button Step Action Display 15 Press the Set button and the Defrost button together 25 of 86 27 Febr...

Page 27: ...ce sensor temperature Displayed temperature is correct Door switch Door is open dO or closed CLO Condenser sensor temperature Displayed temperature is correct Between 51 0 and 125 C Evaporator sensor temperature 4 8 4 The motion sensor test Step Action Display 18 Press the Setbutton and the Defrost button together 19 The EMS display shows 26 of 86 27 February 2014 ...

Page 28: ...nu button and the Defrost button together The test routine ends 4 9 How to view the last three alarms FLt It is possible to view the last alarms and understand problems that have occurred with the EMS con troller Step Action Display 1 Press and hold the Setbutton 2 The EMS display shows 3 Enter the appropriate password to access the menu 4 The EMS display shows 5 Press the Down button and scrollto...

Page 29: ...s occurred Adoor open alarmhas occurred Please note l The alarms may have been cleared or cancelled by the retailoutlet operators 4 10 Passwords The password to enter the EMS controller menu and perform a half reset is as follows Step Action Display 1 Press and hold the Set button 2 The EMS display shows 3 Press the Set button four times x 4 4 Press the Up button once x 1 28 of 86 27 February 2014...

Page 30: ...r the self learning matrix if the EMS controller has been unable to detect activity correctly for example the view of the motion sensor was blocked or if the cooler has been moved to a new location Step Action Display 1 Press and hold the Set button 2 The EMS displays shows 3 Enter the button sequence of the menu entry password 4 Press the Set button four times x 4 5 Press the Up button once x 1 2...

Page 31: ...ics when first powered up Statistics provide information on the following dependent on firmware l Activity Average number of motion counts and door openings l Compressor Average number of compressor cycles and totalcompressor runtime l Operation Settings of the activity frequency AF parameter and the saving temperature disable PEr parameter l Temperature Lowest highest and average temperature meas...

Page 32: ...past 7 days 7 x 24 hour periods Note that the average is a moving average Compressor runtime Total number of hours that the compressor has run since the EMS controller was first powered up or since the last full reset Door openings Average number of door openings per day 24 hour period during the past 7 days 7 x 24 hour periods Note that the average is moving average Highest temperature Highest te...

Page 33: ...orator fan to manage the temperature of the refrigeration compartment This is optionalfor EMS controllers and dependent on controller specification l Lights EMS controllers manage the cooler lights for marketing and energy saving purposes Note l Dependent on controller and sensor configuration 5 1 Defrost Glass Door Cooler GDC firmware Defrost cycles minimizes the risk of the evaporator icing up T...

Page 34: ...ning For periods that the compressor is not running the EMS controllers run the evaporator fan according to the evaporator fan cycle Note l The evaporator fan cycle is not applied whilst the compressor is not running during a defrost period The evaporator fan cycle is defined by the fan cycle on FCO and fan cycle off FCF parameters The fan cycle starts with a fan cycle on FCO period as shown below...

Page 35: ...e and optionally sounds an alarm buzzer Buzzer enable b0 defines whether to sound a warning buzzer for alarm conditions Buzzer duration b1 defines the duration of the buzzer for alarm conditions Note l For door open alarms the buzzer sounds regardless of the buzzer enable b0 setting For more information about the parameters used in alarms l See Buzzer enable b0 on page 75 l See Buzzer duration b1 ...

Page 36: ...s l Appliance sensor failures indicated by PF1 alarms EMS controllers stop running the compressor and then waits 60 seconds before rebooting switch off and then switch on If the fault continues the EMS controller repeats and continues the cycle l Condenser sensor failures indicated by PF2 alarms EMS controllers continue running the compressor EMS controllers alternate the display between PF2 and t...

Page 37: ...calibration 1 CA1 can add an offset to the temperature measured on the appliance sensor l See Calibration 1 CA1 on page 68 EMS controllers can be set to use Celsius C or Fahrenheit F set by the Celsius or Fahrenheit CF parameter l See Celsius or Fahrenheit CF on page 67 36 of 86 27 February 2014 ...

Page 38: ...arning period that is aimed for outlets with regular daily patterns such as 7 11 shops For a 1 day learn ing period the EMS controller runs in the ready mode for the first day 24 hours l 7 day learning period that is aimed for outlets with varied opening hours such as working days weekends closed on Sundays and so on For a 7 day learning period the EMS controller runs in the ready mode for the fir...

Page 39: ...ver if power is lost for more than 3 days controllers clear the self learning matrix when power is restored and starts from the learning period again 6 1 How EMS controllers work example After the learning the activity patterns during the learning period EMS controllers work as follows 1 Prior to the outlet opening the EMS controller ensures that the products are at the correct serving tem peratur...

Page 40: ...ete 7 day self learning matrix as follows l 1 day learning period the EMS controller runs in ready mode for the first day 24 hours The EMS controller then uses the self learning matrix of day 1 for the next six days to build a complete 7 day self learning matrix l 7 day learning period the EMS controller runs in the ready mode for the first 7 days to build a complete 7 day self learning matrix To ...

Page 41: ...l Day 6 the EMS controller runs in the ready mode from08 00 to 14 00 l Day 7 the EMS controller remains in the savingmode Note l The self learning matrix starts the moment the EMS controller is first switched on and is not synchronized with calendar days However the diagrambelow starts at 00 00 on Day 1 for clarity 6 4 Activity EMS controllers learn when retail outlets are open or closed by monito...

Page 42: ...equency AF can automatically determine the most appropriate activity frequency EMS controllers using The EMS controller then starts the learning period after the 48 hours required to determine the activity frequency The EMS controller must be powered up for the complete 48 hour period If power is lost during the 48 hour period the EMS controller restarts determining the activity fre quency again 6...

Page 43: ...the state frommonitor 1 to saving 0 Note l The amount of activity required to change the state frommonitor 1 to ready 2 depends on the setting of the activity frequency AF parameter Therefore at the end of day 1 first 24 hours the EMS controller has set all the 30 minutes to ready 2 or saving 0 depending the outlet activity pattern as shown in the example matrix EMS controllers then copy the patte...

Page 44: ... were set to saving 0 to mon itor 1 as shown in the following example matrix At the end of week 1 the EMS controller has updated the self learning matrix for the outlet activity pattern Note that differences for activity patterns learnt on day 2 take two weeks to be implemented There fore 1 day learning periods are recommended only for outlets with regular patterns every day of the week 6 7 How a ...

Page 45: ...0 Note l The amount of activity required to change the state frommonitor 1 to ready 2 depends on the setting of the activity frequency AF parameter Therefore at the end of day 1 first 24 hours the EMS controller has set all the 30 minutes to ready 2 or saving 0 depending the outlet activity pattern as shown in the following example matrix The EMS controller then continues to run in the ready mode ...

Page 46: ...ifferential Sd temperature The saving mode temperature is set to ensure that the cooler has sufficient time to lower the product to the ready mode temperature The EMS controller starts lowering the product temperature by the saving restart period Sr before the ready mode starts ensuring that the cooler has sufficient time to reach the ready mode temperature from the saving mode temperature However...

Page 47: ...nutes Whist in the saving mode the EMS controller must look ahead in the self learning matrix for a ready period by the time defined by the saving restart period Sr For example the EMS controller looks 2 hours ahead If the EMS controller detects an ready period the EMS controller starts to lower the product tem perature as shown below The EMS controller switches to the saving mode if there are no ...

Page 48: ... serving temperature by keeping the product temperature within the range defined by set point SP parameter and the differential dIF parameter The EMS controller runs the compressor until the set point SP temperature is reached The com pressor is then stopped until the measured temperature reaches the set point SP plus differential dIF temperature During the ready mode EMS controllers display appli...

Page 49: ...s follows l If a ready period 2 does not have the minimumnumber of door openings or motion counts the EMS controller sets the period to monitor 1 The EMS controller runs in the ready mode for periods set to monitor l If a monitored period 1 does not have the minimumnumber of door openings or motion counts the EMS con troller sets the period to saving 0 Otherwise the EMS controller sets the period ...

Page 50: ...for safety extra low voltage SELV Therefore if the sensor cable needs to be joined during production or maintenance only connectors normally used in SELV circuits can be used Caution l Connectors designed to carry mains voltages must not be used to join cables to the sensor circuit The temperature sensors have a negative temperature coefficient NTC Each make and type of sensor has a specific resis...

Page 51: ...n drawn over the products The return air provides a close approximation of the product temperature To measure the return air temperature secure the sensor to allow air to flow over the sensor head The sensor head should be placed at a right angle to the air flow and secured using a P clip The sensor head should not be completely covered by the P clip or the sensor will not function cor rectly Caut...

Page 52: ...ple fix using a metal pipe clip or direct fitting as shown below Elstat can supply pipe clips for 6 8mm and 8 10mm pipes Caution l Do not use cable ties The head of the sensor is fragile and can be easily damaged Using cable ties to secure the sensor head or sensor cable invalidates the warranty l Do not attach sensor cables to hot pipes or allow the sensor cables to come into contact with hot pip...

Page 53: ...ler 7 6 Door switch Door switches are used to detect door openings Door switches are SELV safety extra low voltage components that are able to create an open and closed circuit The enhanced door switch and activator are SELV safety extra low voltage components over moul ded for strengthened physical protection and resistance to water ingress and create an open and closed circuit Door switches must...

Page 54: ... the gap z dimension is correct Z Gap 0mm 0in to 5mm 0 2in 2mm 0 07in The diagram below shows the horizontal vertical and gap alignment between the door switch and the activator for open and closed doors For best results Elstat recommends that enhanced door switches are used with enhanced door switch activators Performance will not be guaranteed if l Enhanced activators are paired with current doo...

Page 55: ...shows two door switches connected in series 7 9 Motion sensor ems75sz The motion sensor is a passive infra red PIR motion detector and is available integrated into the Controller Display Module or remote to the Controller Display Module as shown in the examples below Integrated motion sensor as shown below Remote motion sensor as shown below As the motion sensor cannot monitor activity through gla...

Page 56: ...r foamed into place as required by the OEM or installer 7 11 How to mount a remote motion sensor The motion sensor should be mounted vertically with the connector at the bottom for optimal per formance Mounting horizontally with the connector at the sides results in the motion sensor being less sensitive However the motion sensor still works correctly The motion sensor must not be located behind a...

Page 57: ...a maximum torque of 0 5Nm 0 37lbfft Caution Using rivets invalidates the warranty The dimensions and drilling details of the motion sensor are shown below The dimensions of the mounting holes are shown below 56 of 86 27 February 2014 ...

Page 58: ...nsor PF3 display alternates between PF3 and the appliance sensor temperature l See How to troubleshoot temperature sensor alarms on page 63 Motion detection LED flashing continuously Motion sensor problem l See How to troubleshoot motion sensor alarms on page 61 Cooler not cooling l See How to troubleshoot not cooling problems on page 61 Cooler lights do not switch on If the EMS controller is in t...

Page 59: ... CO2 coolers and the ems55advanced CO2 see CO2 alarms for more information For information about the condenser high temperature Ht parameter l See Condenser high temperature Ht on page 70 Follow the chart to troubleshoot condenser high temperature Ht alarms 8 4 Door open alarm display The EMS controller displays dO to show that the cooler door is open However if the door remains open for the durat...

Page 60: ... triggered if the cooler door is left open for longer than the time defined by the alarm delay Ad parameter If the door is closed and a door open alarm is registered this may indicate problems with the cooler door or the door switch For information about the alarm delay Ad parameter l See Alarmdelay Ad on page 76 Follow the chart to troubleshoot door open alarms on coolers with a door switch 8 6 H...

Page 61: ...ithout a door switch fitted 8 7 How to troubleshoot problems with freeze up protection 888 Problems with freeze up protection may occur if the ambient temperature falls below 0 C 32 F or if the appliance sensor fails For information about the freeze up protection dtt parameter l See Freeze up protection dtt on page 69 60 of 86 27 February 2014 ...

Page 62: ...r settings are incorrect Note l The EMS controller stays in the ready mode if the motion detection LED is flashing continuously For information about the motion sensor enable Sn parameter l See Motion sensor enable Sn on page 77 Follow the chart to troubleshoot problems with the motion sensor 8 9 How to troubleshoot not cooling problems Follow the chart below to troubleshoot problems of the cooler...

Page 63: ...fined by the compressor runtime Ct parameter For information about the set point and compressor run time parameters l See Refrigeration systemfailure Ct on page 72 l See Set point SPC or SPF on page 67 Follow the chart to troubleshoot refrigeration system failure 8 11 Sensor failure Follow the chart to troubleshoot problems with the temperature sensors 62 of 86 27 February 2014 ...

Page 64: ...lt corrected l PF2 alarms EMS controllers continue running the compressor EMS controllers alternate the display between PF2and the appliance sensor temperature indicating a fault l PF3 alarms EMS controllers continue to run the compressor normally and alternate the display PF3 and the appliance sensor temperature Sensor faults may also be identified by using the input test within the test routine ...

Page 65: ...64 of 86 27 February 2014 ...

Page 66: ...l dIF Saving set point SSP and Saving differential Sd Saving restart Sr Design OEMs Defrost method dF and if applicable Defrost termination method dtF Defrost interval dE and Defrost duration dd Defrost activation temperature ddt and Defrost termination temperature dtd Defrost heater dHr Compressor rest time rt Fan cycle on FCO and Fan cycle off FCF Calibration 1 CA1 and Calibration 2 CA2 Uninterr...

Page 67: ...arameters have been added to the GDC firmware l Sensor enable Sn l Marketing mode Ar Note l The above applies to ems55advanced controllers manufactured after July 2012 Revisions have been made to the Ar parameter for selected controllers during 2014 The following controllers have the enhanced functionality l ems25Plus l ems25Plus CO2 l ems25 CO2 CQC Please refer to controller user manual for furth...

Page 68: ...C or 01 F Global default 00 C 9 5 Set point SPC or SPF The table below details the set point SPC or SPF parameter Display Description Defines the compressor cut out temperature during the ready mode The set point SP temperature is the lowest measured temperature under normal operating conditions The set point is displayed as SPC set point Celsius or SPF set point Fahren heit depending on whether t...

Page 69: ...derations Applied to all temperatures measured on the appliance sensor Range 9 9 to 9 9 C 18 to 18 F 9 9 to 4 0 C 18 to 18 F ems55advanced UFF d42 firmware only Global default 0 0 C 0 F 9 8 Calibration 2 CA2 The table below details the calibration CA2 parameter Display Description Calibrates or adds an offset to temperatures measured by the evaporator sensor The offset helps the positioning of the...

Page 70: ...re during the saving mode Considerations If the saving differential Sd is set too low for example less than 2 0 C the compressor may cycle on the minimum compressor rest time rt Range 0 0 to 9 9 C 0 to 18 F Global default 4 0 C 7 F ems75sz 3 0 C 5 F 9 11 Freeze up protection dtt The table below details the freeze up protection dtt parameter Display Description Defines the temperature to stop furth...

Page 71: ...enser sensor On reaching the condenser high temperature Ht the EMS controller disables the compressor and activates an alarm Considerations 1 Is not used with CO2 R744 coolers 2 Requires a condenser sensor 3 To set the condenser high temperature Ht measure the refrigeration systemtemperature when the condenser is 75 blocked 4 To disable set below 50ºC or 122ºF Range 0 0 to 125ºC 32 to 257ºF Global...

Page 72: ...o 86ºF ems75sz 5 to 22ºC 23 to 71ºF Global default 9 0ºC 48ºF OFC firmware 10 0 C 50 F Firmware excluding OFC and SZ 15 0ºC 59ºF SZ firmware 9 16 Compressor rest time rt The table below details the compressor rest time rt parameter Display Description Defines the minimum time between compressor cycles The compressor rest time ensures that the pressures in the refrigeration sys tem have time to equ...

Page 73: ...only take affect once Delay to saving dS has completed Range 0 to 120 minutes Global default 00 no delay 9 19 Saving restart period Sr The table below details the saving restart period Sr parameter Display Description Cooler runs at the ready mode temperature for the duration of this period to ensure that the cooler is at the set point prior to retail outlet opening time Considerations l Set and v...

Page 74: ... and beginning of the next defrost cycle A time based defrost cycle helps improve evaporator efficiency Considerations l In the event of power loss the defrost duration dE is not maintained The defrost intervalis reset l If icing up occurs review the values of the defrost parameters Range 0 to 199 hours Global default 06 hours 9 22 Defrost duration dd The table below details the defrost duration d...

Page 75: ...to use the defrost duration dd or the defrost termination temperature dtd the EMS controller ends the defrost cycle on the first to occur Considerations Defrost method dF must be set to 0 Available only with the ems55 series using OFC Open Front Cooler firmware and the ems75sz Range 00 time dd or 01 time dd or temperature dtd Global default 01 time or temperature 9 25 Fan cycle on FCO The table be...

Page 76: ... Increasing the value for the display stability d2 slows the rate of change of the displayed temperature Considerations Use the global default value for normal operation Range 1 to 254 Global default 2 9 28 Buzzer enable b0 The table below detail the buzzer enable b0 parameter Display Description Enables or disables a warning buzzer for alarm conditions Door open alarms always sound the warning bu...

Page 77: ...on Defines the maximum time the cooler door can be open before sounding the alarm buzzer Considerations If disabled the door switch is also disabled The EMS controller does not detect door openings therefore the EMS con troller does not l update the self learning matrix for door activity l manage the evaporator fan management for door activity l sound door alarms if the door is left open Range 00 ...

Page 78: ... hour period to determine the activity frequency before starting the 1 day or 7 day learning period 9 32 Motion sensor enable Sn The table below details the motion sensor enable Sn parameter Display Description Enables the input from the motion sensor Considerations Must be disabled if a motion sensor is not fitted Range 00 disabled or 01 enabled Global default 01 enabled 9 33 Saving temperature d...

Page 79: ...or 01 temperature Global default 01 temperature 9 36 Marketing mode Ar The table below details the marketing mode Ar parameter Display Description Sets the cooler lights to remain on at all times for display purposes The coolers lights will remain on during saving mode Considerations Does not affect saving temperature Only applies to the following controllers l ems55advanced and ems55Radvanced GDC...

Page 80: ...defrost heater during the defrost cycle and do not run the evaporator fan The evaporator fan then remains off for one minute after the end of the defrost cycle 04 Switch on the defrost heater during the defrost cycle and do not run the evaporator fan The evaporator fan then remains off for two minutes after the end of the defrost cycle 05 Switch on the defrost heater during the defrost cycle and d...

Page 81: ...lue Black P P White Black P P Red Blue P P Green Blue P P Pure Green Blue P P Blue Blue P P White Blue P P Red Green P P Green Green P P Pure Green Green P P Blue Green P P White Green P P Red Red P P Green Red P P Pure Green Red P P Blue Red P P White Red P P Red Silver P P Green Silver P P Pure Green Silver P P Blue Silver P P White Silver P P Red Yellow P P Green Yellow P P Pure Green Yellow P ...

Page 82: ...10 1 Examples of CDM colours 81 of 86 27 February 2014 ...

Page 83: ...0 120VAC and 220 240VAC 50 60Hz Compressor 10 10 A p f 0 6 Light 4 4 A p f 0 6 Evaporator fan 6 6 A p f 0 6 Auxiliary 6 6 A p f 0 6 relay used for defrost functionality 11 3 Temperature sensors Sensor Input range oC Input range oF Appliance sensor 10oC to 23 3oC 14oF to 74oF 82 of 86 27 February 2014 ...

Page 84: ...l Power supply module PSM IPX5 Maximumambient temperature 50oC 122oF 11 5 Product approvals EN60730 1 EN60730 2 9 European Norms ElectricalCertification IEC60730 1 IEC60730 2 9 Glow wire IEC60335 1 InternationalElectrotechnicalCommission Please note CE Conformité Européene European Conformity Replaces RoHS Restriction of Hazardous Substances On controller labelling as of January 2013 83 of 86 27 F...

Page 85: ...exceed ELVunder normalconditions and under single fault conditions including earth faults in other circuits Safety Extra Low Voltage as described in BS EN 60335 Household and similar electricalappliances Safety standards IEC International Electrotechnical Commission Publisher of internationalstandards for allelectrical electronic and related technologies IP Ingress Protection Aprotection rating ac...

Page 86: ...e it can detect motion allowing the con troller to be installed out of sight Firmware The code written into the EMS microcontroller containing the rules and algorithms of operation Every controller contains firmware and the version of firmware is identified during power up by two three digit numbers Checksum The checksumis a sum which identifies which parameter set or XMLfile has been loaded onto ...

Page 87: ...Elstat Electronics Astra Business Centre Roman Way Preston PR2 5AP United Kingdom 44 0 161 22 77 200 www elstatgroup com ...

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