Degree Master Manual D2 - icemeister.net

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Programming and changingsettingsConnecting to the Degree MasterTo make any changes to the settings or programmedfunctions of the Degree Master, you mustfirst connect to the device using the followingprocedure:1. Push [CONNECT]. The display responsd“FOR CNX COPY NUM nnnn” where “nnnn”is a four digit numeral.2. Push [ENTER]. The first digit of the displayednumeral blinks.3. Enter the four digit number “nnnn” you saw instep 1 above.4. Push [ENTER]. You now have programmingaccess to the device; the first status displayappears again.You can now move to all the areas where programmingentries are possible. If at any time threeminutes pass without any key being pushed on theremote, you will be disconnected.Programming inputsIn order to program an input, it is necessary tospecify its channel and type, and to enter anoffset if one is required to adjust the accuracy ofthe sensor. Let’s define those terms:CHANNELthe dedicated pathway sensor informationtakes as it enters and is processed by the loadcenter. The channel will have a number from00 to 05.TYPEthe type of input:NONE there is no sensor for this inputELM the sensor is an Elm sensorDIG the sensor is a digital (on-off) sensorTP1the sensor is a Danfoss TP1 sensorTP2 the sensor is a Danfoss TP2 sensorOFFSETa number of degrees from 00 to 99 that isadded to or subtracted from the sensor valueby the Degree Master to fine tune sensorreadings.To change an input’s setup, use the followingprocedure1. Connect to the Degree Master using the proceduredescribed at left.2. Push the [INPUTS] key. “SETUP INPUTS” willscroll across the display. You will then see themessage “FOR PROD SNSR PUSH ENTR.”You can set up the product sensor or use the upand down arrows to move to another sensor.Using the down arrow, the sensors will appear inthis order:PRODproduct temperature sensorDCHdischarge air temperature sensorRTNreturn air temperature sensorDEFRdefrost termination temperature sensorEVAP INevaporator inlet temperature sensorEVAP OUTevaporator outlet temperature sensorWe will assume for the purpose of example thatyou wish to set up the product temperaturesensor.3. Push [ENTER] to select the product sensor. Thedisplay responds with “CHAN nn” where nn is atwo-digit numeral. Only the numeral remains onthe display. (Remember, if at any time you needto refresh your memory, press repeat to reviewthe entire message.) If the displayed channel isthe correct channel for the product sensor, go tostep 5. If you need to change the channel, press[ENTER], and the first digit of the channelnumber begins to blink. You can key in a numberfrom 0-9 from the numeric pad or you can usethe up and down arrow keys to change thenumber. When the number is as you want, moveto the right digit by using the right arrow key.Adjust this digit in the same manner.4. When the channel number is correct, press[ENTER].5. In the same manner, use the up and down arrowkeys to scroll to the other programmable fields(TYPE, OFFS) and make any needed changes.6. Push [ESC] to exit to the main input.7. Use the arrow keys to move to the next input16
needing changes. Make the changes as detailedabove.Programming system configurationSystem setup is accomplished after connectingto the Degree Master, then pushing the [CONFIG]key. Configuration options are as follows:REFR CTRLNONENo refrigeration control is programmed.MFGR not yet implementedEEV not yet implementedEPR not yet implementedCYCL on-off controlVALVE TYPENONE no valve is controlledMFGR not yet implementedPULS not yet implementedSTEPSOLNnot yet implementedthe controlled valve is either aliquid line or suction stop solenoid.VALVE POLARITYEOFF the valve is normally closedEON the valve is normally openUSE FAN CYCLE CTRLSets fans to be turned off if a selected sensor isat too high a temperature. Choose YES or NO.USE FAN/ DEFR RLY FORFANS the relay controls fansDEFR the relay controls defrostPULSE PERIODnot yet implementedSTEP RATE not yet implementedMAX STEP not yet implementedSTEP HYSTERESISnot yet implementedSTEP INIT RNGnot yet implementedDOW the day of the weekTIME the time of dayDFLT TEMP DISPPROD product sensor is default displayCTRL control sensor is default displayCASE case sensor is default displayDUAL TEMP MODEMED for medium temperature operationLOW for low temperature operationProgramming setpointsSetpoint programming and changes are accomplishedby using the keys in the setpoints area of17the remote control. The five buttons and theirassociated setpoints are as follows:[TEMP]: Temperature setpointsAfter pushing the [TEMP] button, the confirmingmessage “SETUP REFRIG’ appears,followed by the first parameter, “CUT IN” andits current value. As for any parameter, if youwish to change the setting, push [ENTER]when the value appears, and the display willbegin to flash. Use the number keys to put inthe new setting. The other parameters are:CUT INthe temperature at which refrigeration will bestarted.DEAD BANDthe number of degrees differential between cutin and cut out.SUPR HEATthe temperature differential to maintain acrossthe evaporator, between sensors EVAP IN andEVAP OUT.MIN OFF TIMEthe length of time that refrigeration mustremain off before being turned on.FAN CYCL SETP(active only if there is a “YES” answer to“USE FAN CYCL TEMP” in configuration)fans will be off at and above this temperature.MED TEMP OFFSthe offset by which temperature setpoint andalarm limits will be raised for operation in themedium temperature range in dual temperatureoperation.[DEFR]: Defrost setpointsThe parameters are:TERM TYPETIME terminates on time aloneTEMP terminates on time and tempOPEN terminates on open digital sensorCLSDF termniates on closed digital sensorSTRT TIMEThe start time for the first defrost. If more thanone defrost is scheduled, they will be evenlyspaced throughout the day.NUM PER DAYThe number of defrosts per day.MAX TIMEthe maximum defrost time, in minutes.MIN TIMEthe minimum defrost time, in minutes.
Page 3: Table of ContentsWiring specificati
Page 7: Typical application wiringNote that
Page 10 and 11: Anti-sweat heater moduleThe Degree
Page 12: Terminal stripFor maximum network i
Page 15: loads can have one of two states --
Page 19: Special functionsThe fixture can be
Page 24: WarningMaintenance & Case CareWhen

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