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15

4

Defrost Dwell Timer (0 - 99 min.)

The defrost dwell time is set here.
After a defrost cycle, whether the cycle has terminated by time or
temperature, a dwell period can be programmed (for drain off), or set to ‘0’
(no dwell).
There are two dwell pre-sets; one for cycles 1 - 6 and one for cycles 7 - 12.

5

Defrost Start Times

Once the defrost duration, termination temperature and dwell periods have
been set, they apply to all start times within that defrost group.
Each defrost cycle is off (inactive) when the display for that cycle is blank. In

order to program a cycle start time, select the cycle using the 

 keys

then press the 

 or 

 keys to programme the time.

In order to switch off a defrost cycle, set the start time of that cycle to 24:00

(press the 

 key when display reads 23:50 or the 

 key when display

reads 0:00).

Summary of Contents for SMX 100

Page 1: ...THERMOMAX SMX 100 Microprocessor Based Refrigeration Controller Datalogger and Alarm ENGLISH www Thermomax Group com...

Page 2: ...3 5 ALARM DIAGNOSTIC SCREENS 3 5 1 ALARM SCREEN High and Low Level Alarm Pre set 16 3 5 2 DIAGNOSTICS SCREEN System Status Information 18 3 5 3 DATABANK DIAGNOSTICS SCREEN 19 3 6 PLOT SCREENS 3 6 1 P...

Page 3: ...stable duration termination temperature and dwell period Manual defrost activation and override ALARM 2 Stage high and low level alarms with mute and reset facilities Stage 1 temperature threshold wit...

Page 4: ...nected to the mains supply via a suitably rated isolating switch 4 WARNING When the unit is connected to the mains supply and the cover is opened circuits at mains voltage will be exposed Therefore wh...

Page 5: ...panel assemble any grommets or conduit adapters if used replace the box and fasten using the two lower screws 2 2 SENSORS Included are three identical temperature sensors each supplied with 5m of cabl...

Page 6: ...used connect the alarm relay as appropriate 2 4 POWER CONNECTIONS AND WIRING DIAGRAM NOTE This device should be properly earthed Flexible wires simplify connection to the terminals All connections sh...

Page 7: ...the system clock If a longer period of mains failure is anticipated a battery kit of up to 72 hours capacity can be supplied by Thermomax If the power cut takes longer and the battery has discharged...

Page 8: ...2 FUNCTION KEYS There are six function keys on the SMX 100 datalogger Alarm Screen Main Screen Diagnostics Screen Databank Diagnostics Screen Set Screen 1 Set Screen 2 Plot Screen Set Screen 3 Defros...

Page 9: ...lity press and hold the key in order to advance quickly Note The and keys are the only keys which can alter the value of a selected parameter Other keys may be pressed to view or select these paramete...

Page 10: ...the keys as appropriate Note The evaporator temperature view is momentary only The display will revert back to room temperature when the select key is released 6 Digital display of selected temperatu...

Page 11: ...s The indicates that the day on the calendar above is being set The clock is in 24 hour format To advance quickly press and hold the or key for auto repeat 3 Calendar This is the calendar of the month...

Page 12: ...ential of 2 C is selected assuming a cold room temperature of 8 C the temperature has to rise to 6 C before the compressor will switch on and then drop to 10 C before the compressor will switch off Th...

Page 13: ...old room immediately after a defrost cycle The fan thermostat has a built in differential of 1 C i e when the pre set temperature is 0 C the fan will switch on when the evaporator drops to 1 C and wil...

Page 14: ...be set using and keys Note This is a display scale only i e it will not affect the storage of the information 4 Keypad Lock Please refer to the back of this manual 5 Defrost Two options are available...

Page 15: ...in group 2 the group 1 start time will prevail The defrost cycles may be set at random i e they need not be set with cycle 1 being the earliest time then cycle 2 etc 2 Defrost Duration 1 99 mins The...

Page 16: ...Start Times Once the defrost duration termination temperature and dwell periods have been set they apply to all start times within that defrost group Each defrost cycle is off inactive when the displa...

Page 17: ...1 temperature 50 C to 50 C The stage 1 alarm is a time temperature related alarm If the maximum threshold is exceeded a timer is initiated and no further action is taken at this time If subsequently...

Page 18: ...ages they will be displayed here and by referring to the diagnostics screen further investigations may be carried out see 3 5 2 If everything is in good working condition the message OK is displayed h...

Page 19: ...ayed If the sensor input is experiencing a fault condition this is displayed here 7 High Alarm monitor This display shows the current state of the high alarm monitor as well as the history If there is...

Page 20: ...capacity of the internal databank 3 The DAYS FREE window shows the total number of days which have not yet been used 4 The PERC FREE window shows the percentage of the databank which has not yet been...

Page 21: ...e This displays in digital form the time indicated by the time bar 5 Plot Date This shows the date of the displayed graph 6 Time Bar Cycle This shows the cycle that the system was in at the time indic...

Page 22: ...he highlighted months on this screen are the months for which the databank contains data 3 Current selection To view the plot of a particular day select the required month from the calendar using the...

Page 23: ...1 Press the key three times to select SET SCREEN 2 Section 3 3 1 2 Use the key to move to the CALIB CODE window 3 To enter the CALIBRATION TRIMMING Screen press and hold the key for 8 seconds 4 Use t...

Page 24: ...fer of data will avoid any loss of information due to databank re usage as described above 3 8 1 Transferring Data Using the Masterlink Software NOTE Before data can be transferred to the PC the softw...

Page 25: ...transfer to the Masterlink Hardware from 1 day to the total number of days stored in the internal databank of the Thermomax unit In this example there are 61 days of data stored in the Databank e To...

Page 26: ...PRINT 0001 DAYS INCREASE DECREASE CONFIRM MAX 61 DAYS c The user can now choose any number of days starting from the current day to print directly to the Thermomax Serial Printer from 1 day to the to...

Page 27: ...omax Serial Printer A6747 Masterlink Hardware Unit C0321 PC Mode 2 This mode is used to network up to 32 units to one PC see illustration below SM QUATTRO PANELMOUNT C0445 SM DUE PANELMOUNT C0447 NETW...

Page 28: ...g screen will appear DATA TRANSFER FUNCTION NOT AVAILABLE PLEASE REFER TO MANUAL In order to download data to the Masterlink Hardware unit or print directly to a Thermomax Serial Printer the network m...

Page 29: ...switch off and back on again If you do not wish to disable the network press the key For instructions on how to download data from the SMX 100 Panelmount to the Masterlink Hardware or print data direc...

Page 30: ...following screen With this screen displayed press and hold the key for approximately 10 seconds The following screen will appear To enable the network press the key When the key is pressed the SMX 10...

Page 31: ...nual override Cause Remedy The defrost termination temperature has been exceeded the evaporator temperature is higher than the defrost termination temperature Adjust this pre set to suit see Defrost s...

Page 32: ...ble Length Unmarked Sensor 5m X 3 PARTS LIST SMX 100 Unit with sensors C0320 SMX 100 Unit without sensors C0405 ACCESSORIES PT100 Sensor 5m A6905 Sensor Extender l0m A6911 PT100 Sensor 15m A6915 Senso...

Page 33: ...is available on request This product is in conformance with the Low Voltage Directive 73 23 EEC Thermomax certifies that this datalogging and or control device has been manufactured to an ISO 9002 Qua...

Page 34: ...100 PANEL MOUNT Pressing the key twice reveals the following screen This screen displays the status of the COMPRESSOR DOOR HEATER and FAN The function of each is detailed in Section 3 3 2 of the manu...

Page 35: ...t Heater max 3A Fan max 3A Transformer 12V Externally Fitted Relay NOTE For SMX100 applications CH1 Room CH2 Evaporator CH3 Product CH4 Not Used NOTE The SMX 100 relay outputs should only be used to d...

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