C207-14 User`s Manual
Contents
1. 3 seconds to save modified parameter and return to the display of parameter type 7 Repeat the procedure of 5 6 to modify the parameters of the other types 8 If press for more than 3 seconds or no button is pressed within 60 seconds exit the procedure of the parameter setting Warnings 1 If no button is pressed for within 60 seconds all the changes of parameters the values saved temporarily in the RAM will be invalid And the previous setting will be restored 2 If the instrument is cut off before the parameters are saved all the values saved temporarily in the RAM will be lost Howe Precision Industrial INC C207 14 Rev 1 0 Last Modify 2015 2 9 25 C207 14 User s Manual 2 2 Temperature Probes Modify the probe Use the parameters in the following table to modify and stabilize the measured temperature by the temperature probes Probe parameters Para Description Type Min Max Unit 0 Probe measurement stabil P 1 18 n Poeto e sf 8 o 2 Prezo e s o B Preso e f s o s s r m e Description of the Parameters 0 Probe Measurement Stability This parameter defines the coefficient used to stabilize the temperature measurement Low values accelerate the response time of the probes and the reading is however more sensitive to the disturbance High values slow down the response time of the probes but it s not sensitive to the disturbance That is it has a more stable and more precise2. 8 types P probe parameter Pr temperature control parameter PC compressor parameter Pd defrost parameter PA alarm parameter PF fan parameter Pt clock defrost parameter and PH system parameter 2 1 Modifying the Parameters 2 1 1 Accessing the essential parameter St Setting method 1 In normal operation press for 3 seconds and then the display shows the current set point 2 Press or Y to increase or decrease the value until to the desired value 3 Press E to confirm the new value in order to save the new value and return to the normal operation 2 1 2 Accessing the Advanced Parameters 1 Press gt for more than 5S and then the display shows the code of parameter PS password 2 Press to enter into the password set 3 Press and Y to scroll the number to 15 4 Press to confirm the password and then the display shows P7 5 Press amp and to scroll the parameter type P Pr PC Pd PA PF Pt PH 6 Press to confirm the parameter type and then the first parameter name of this kind of parameter will be shown 6 1 Press amp or to scroll the parameters 6 2 Press to display the relevant parameters 6 3 Press amp or V to increase or decrease the value 6 4 Press to save the modified value temporarily and return to the display of the parameter 6 5 Repeat the procedure 6 1 6 4 to modify the other parameters 6 6 Press for more than
3. of the defrosting is determined by the parameter d1 dO 2 real time defrost The clock set determines the defrosting d1 Defrost interval The defrost interval starts counting from the end of the previous defrosting Howe Precision Industrial INC C207 14 Rev 1 0 Last Modify 2015 2 9 5 C207 14 User s Manual dt end defrost temperature set point defrost temperature threshold with temperature control During the procedure of the defrosting if the evaporator temperature probe 2 is higher than dt the defrosting will not be performed Coming into the cycle of the defrosting if the evaporator temperature is higher than dt the cycle of the defrosting will not be performed If the defrost probe is shielded or broken the defrost will be stopped after a maximum time equal to the value of dp dp defrost duration Determine the maximum duration of the defrosting After the period of dp the defrosting will stop d6 display of controlling temperature frozen during the defrosting This function is what the display shows during the defrosting d6 0 The instrument displays the temperature in the cabinet and dF alternatively After finishing the defrosting the normal display will be restored d6 1 If the display during the defrosting is not locked the instrument displays the last value read before the current defrosting The display returns normally when the temperature in the cabinet is lt the set point St or a
4. period dd 0 2 when the instrument is power on cO cO 40 Description of the parameters FO enable evaporator fan control FO 0 The fans are always on FO 1 The fans and the compressor are controlled synchronously FO 2 The evaporator temperature controls the fans In normal situation fans can be operated according to the set model above not including the defrosting the drainage and the power on instrument F1 Evaporator fan controls set point Evaporator fans control the set point F0 2 When the evaporator temperature is lt F1 fans are on When the evaporator temperature is gt F1 Fd fans are off F3 Evaporator fan status during defrost F3 0 During the defrosting the fans are on F3 1 During the defrosting the fans are off F4 Evaporator fan delay after dripping After dripping it needs 4 time delay to start the fans Fd Evaporator fan controls the temperature difference The fans control the temperature difference see parameter F1 Howe Precision Industrial INC C207 14 Rev 1 0 Last Modify 2015 2 9 C207 14 User s Manual 2 8 Real Time Defrost and On amp OFF controller Para pescheuen Type Min X Unit t1 t2 Defrost time2 Pt 0000 24 00 HAMM t3 Defrosting time 3 Pt 00 00 24 00 HH MM t4 ___ Defrosting time4 Pt 00 00 24 00 HH MM t5 t6 01 Ft 02 F2 O3 F3 04 24 00 Zz 24 00 HEMM t1 t6 defrosting time When set t1 t6 you can switch the setting from hour t
5. C207 14 User s Manual C20 14 User s Manual Revision History The following revision history table summarizes changes contained in this document Revision Revision aa V1 00 02 09 2015 Tech0O7 Initial public release 1 Description C207 series Controller is designed for refrigeration equipment control It can control and protect the compressor At the same time it can control the defrosting the circle defrosting or the real time defrosting to meet the needs of different occasions And it can control the evaporator fan In addition there are 3 types temperature measurement That is it can measure the temperature in the cabinet the evaporator temperature and the condenser temperature 1 1 Description of the display The display has 2 5 digits Its most display is 188 and 5 symbols refrigeration fans defrost alarm and clock 1 Refrigeration It shows when compressor start flashes when the activation of the compressor is delayed by protection times 2 Fans It shows the work status of the evaporator fan 3 Defrost It comes on when an alarm situation occurs 4 Clock It sets the parameter associated with the clock 5 Alarm It comes on when an alarm occurs or the instrument is in the situation of setting parameter FIG 1 Warnings When you set the parameters alarm symbol D flash frequency is 0 5 HZ 1 2 Description of the buttons The controller has four buttons T 4 V St to operate the control
6. er than the set point and the condition meets the alarm delay see parameter Ad an alarm will occur Ad Low amp High temperature alarm delay Howe Precision Industrial INC C207 14 Rev 1 0 Last Modify 2015 2 9 zos C207 14 User s Manual When the temperature is higher than AH or lower than AL an alarm will occur after the period of AE instead of occurring at once During the delay time alarm condition will be eliminated an alarm delay will be cancelled and the calculator will become 0 If set Ad 0 an alarm will occur at once AE condenser alarm delay When the temperature is higher than AC an alarm will occur after the period of AE instead of occurring at once During the delay time alarm condition will be eliminated alarm delay will be cancelled and the calculator will become 0 If set AE 0 and the temperature is higher than AC an alarm will occur at once 2 7 Evaporator Fan Management Para Description Type Min ax Unit FO Enable evaporator fan control eet E egret or ao o or point o peneem e To oT defrost e neem m o o m dripping temperature difference In normal operation the evaporator fans can be managed in the following models 1 always on 2 on only when the compressor is operating 3 on according to the temperature of the evaporator During the defrosting model the status of the evaporator fan is determined by parameter F3 on F3 0 off F3 1 The fans are always off 1 during the dripping
7. erature difference t1 08 00 08 00 t2 16 00 16 00 t3 00 00 00 00 t4 Detosina ime Pt 0000 2400 HENN n t5 24 00 HEMM mm mm om t6 Defrosting time 6 Pt 00 00 24 00 HH MM O1 ON status time 1 Pt 00 00 24 00 HH MM m F1 24 00 HH MM i i i O2 ON status time2 Pt 00 00 24 00 HH MM i F2 OFF status time2 Pt 00 00 24 00 HH MM O3 24 00 HH MM i i i i F3 OFF status time3 Pt 00 00 24 00 HH MM O4 ON status time4 Pt 00 00 24 00 HH MM F4 _ OFF status time 4 Pt 00 00 24 00 HH MM H2 rNot defined Pa oo o Noi e fe Fona Parameter values are derived to the quick editor 2 14 Communication Q gt The controller used RS 485 bus interface Modbus RTU type Communication set up baud rate 9600bps 1 stop bit no parity non zero Registers define reference document lt C207 14 Modbus registers definition gt 3 Wiring Diagram Wiring diagram is FIG 4 Warnings Howe Precision Industrial INC C207 14 Rev 1 0 Last Modify 2015 2 9 11 C207 14 User s Manual 1 Before use please first confirm whether the power supply and the voltage can meet power supply s need of controllers Or the instrument can t run normally and even it is burned to destroy 2 If the instrument doesn t be used fo
8. fter the set alarm bypass time after the defrosting d6 2 If the display during the defrosting is not locked the instrument displays dF The display returns normally when the temperature in the cabinet is equal to or lower than the set point st or for the set alarm bypass time after the defrosting parameter 8 d8 Alarm bypass time after defrost of power on When defrost the temperature in the cabinet will become higher and the alarm of the high temperature will not occur Indicate the time after finishing defrosting After the period of d8 that an alarm occurs can be judged dd Dripping time The parameter forces the compressor off after the defrosting in order to drip 2 6 Alarm Para Description Type Min unit Ad Probe 1 temperature alarm delay PA 0 9 Mn AE Condenser alarm delay PA 0 9 Mn AL Low temperature alarm of probe 1 When the temperature in the cabinet probe 1 is lower than AL and the condition meets the temperature alarm delay see parameter Ad an alarm will occur AH High temperature alarm of probe 1 When the temperature in the cabinet is higher than AH and the condition meets the temperature alarm delay see parameter Ad an alarm will occur Warnings After the instrument is power on the temperature in the cabinet alarm will be shielded And after a period of d8 that an alarm occurs will be judged Ac condenser alarm set point When the condenser temperature probe 3 is high
9. k when the temperature is gt St rd the compressor begins to work 2 4 Compressor Protection Para Description Type Min Max Unit cO Compressor amp fan start delay after power on cf Min time between successive compressor starts The compressor on time when the EDE c4 probe is fault C9 probe is fault c0 compressor amp fan start delay after power on Represents the delay in starting the compressor and the evaporator fans from control power on C1 min time between successive compressor starts The time between 2 consecutive starts of the compressor is at least c1 UOM Min c4 The compressor on time when the probe is fault c5 The compressor off time when the probe is fault c4 0 the compressor will be always on when the probe RT1 error is detected At the moment the probe RT1 error is detected the compressor run the duty setting cycle starts from the current status of the compressor and the time already elapsed is ignored 2 5 Defrost Para Description Type Min X Unit d0 Derse M a t a a d1 Defrostintevval Pd 4 19 Hour End defrost temperature set point defrost temperature f PT ai threshold with temperature a Me ot control dp Defrost duration Pa O f 19 Mn d6 Display when defrosting E a Alarm bypass time after d8 199 defrost of co on dd Drippingtme Pa Min d0 defrost model If d0 0 shield the function of the defrosting d0 1 defrosting cycle The cycle
10. ler Howe Precision Industrial INC C207 14 Rev 1 0 Last Modify 2015 2 9 l C207 14 User s Manual 1 Button In normal operation press and hold for more than 3 seconds display the set point press and hold for more than 5 seconds access the menu for setting the parameters Press and _ at the same time the controller will activate the procedure for setting the default parameters In parameter setting mode alternates the display of the value of each parameter with the name if pressed for more than 3 seconds saves the changes In set point display model if press the changes will be saved In set point display mode if pressed saves the changes 2 Button A In normal operation if pressed for more than 3 seconds display the temperature of RT2 if pressed together with tt for more than 3 seconds activates deactivates the defrosting cycle if pressed together with for more than 3 seconds display the real time clock In parameter setting mode moves from one parameter to the next increases the value associated with the parameter In set point display mode increases the value of the set point 3 Button Y In normal operation if pressed for more than 3 seconds display the temperature of RT3 if pressed together with A for more than 3 seconds display the real time clock if pressed together with S for more than 5 seconds activates the procedure for setting the default parameters In parameter se
11. n Max Unit Belsutlelass Probe measurement 0 stability H Probe 1 offset 5 C F 0 a Pozo pr 5 ere 0 0 0 B Posos pr s cr o 0 0 s sace Si E eee r N r rd Difference EE amp fan cO start delay after power on Min time between c1 successive compressor starts The compressor on c4 time when the probe is fault The compressor off c5 time when the probe is fault dO Defrost type Defrosttype Minimum set point C OF 30 10 allowed Maximum set point 194 C F 15 10 allowed Pr pepe per Scenes ef m ala gt d1 a al aa End defrost temperature set point defrost dt temperature threshold with temperature control dp w N a 30 d O Alarm bypass time d 0 after defrost of ae dd Dripping time time A defrosting fee lelelol gt Pej 0_ _8_ _Min_7_8__8 78 alarm of probe 1 High temperature a5 199 ce 7 alarm of probe 1 Howe Precision Industrial C207 14 Rev 1 0 Last Modify 2015 2 9 INC 10 30 20 46 30 C207 14 User s Manual Condenser alarm Ac PA 45 B 199 e jeri 55 a 55 an 131 d 131 set point Ad Probe 1 temperature PA 10 alarm delay AE Condenser alarm 10 10 10 delay FO Enable evaporator 0 fan control E a a a PF 40 199 F 5 5 41 41 controls set point Evaporator fan after dripping Evaporator fan temp
12. o minute such as FIG 2 If the clock runs to the setting hour and the parameter d1 0 the instrument begins to defrost If the value is 24 00 display means this time is disabled O1 F1 ON OFF time 1 O2 F2 ON OFF time 2 03 F3 ON OFF time 3 O4 F4 ON OFF time 4 Ox ON status start time Fx OFF status start time If the value is 24 00 display means this time is disabled Note if the value of Fx less than Ox means the Fx time as next day Setup Hour gt f IUI Iul Setup Minute ar oon ey IL FIG 2 2 9 Clock and Time Band Parameters When the controller is in the normal model press A together with Y for 3 seconds in order to enter into the clock view setting model see FIG 3 and then the indicator is light and the display shows the current time hour 24 hour system And press to switch to the minute display Then you can press to exit the time display Howe Precision Industrial INC C207 14 Rev 1 0 Last Modify 2015 2 9 8 C207 14 User s Manual If the time is needed to set and when it is checked please press Aor Fito adjust the time to become the correct time and then press to confirm Indicate the current JOM f I to be hour 2 I Indicate the current UOM A e to be minute Se I j f Ob LS FIG 3 2 10 Other Parameters Para Description ax Unit o Modbus address S PHT to H2 Notdefined m oJ Ct H3 S
13. oftware version number Ph J HO Modbus address The address of Modbus is for communication H2 Not defined H3 Software version number Software version number can be viewed by this parameter It cannot be set and it is onboard data of the system H4 Parameter values are derived to the quick editor This function is reserved 2 11 Alarm Code Alarm code Description EO Probe 1 fault control E1 Probe 2 fault evaporator E2 Probe 3 fault condenser Lo Low temperature alarm in the cabinet probe 1 Hi High temperature alarm in the cabinet probe 1 CH Condenser probe 3 temperature alarm When the controller displays alarm code above check the relevant equipment or accessories or check whether the controller parameter set is appropriate according to the relevant code 2 12 Procedure for Setting the Default Parameter To set the default parameter 1 Press and Y at the same time the display shows the current default class Howe Precision Industrial INC C207 14 Rev 1 0 Last Modify 2015 2 9 SE C207 14 User s Manual 2 Continue hold the buttons for more than 5 seconds the value is flashed then releases the buttons 3 Press amp or to change the value 00 01 OF 1F until to the desired value 4 Press for more than 3 seconds confirm the new value and exit to normal operation All the default value of parameter will be loaded automatically 2 13 Parameter List Para Description Type Mi
14. r a long time please confirm whether its clock is accurate before it is used again 3 Connection terminal screw torque 5Kg cm RSL85 POWER Te s4 s 67 2 2 bol fie b hh OB A RTI RT2 RIS f _ 1 FIG 4 Howe Precision Industrial INC C207 14 Rev 1 0 Last Modify 2015 2 9 SET
15. reading 1 Probe 1 offset This parameter is used to correct the measured temperature of probe 1 The symbol of the value indicates that the temperature of probe 1 is added to positive value or subtracted from negative value the offset 2 3 Probe 2 3 offset The using way of 2 and 3 is the same as that of 1 After the parameter value is set to the sign of this relevant probe will be disabled 5 Select C F Defines the unit of measure used for the control and the display C degrees centigrade F degrees Fahrenheit 2 3 Temperature Control Display or set the current temperature set point Press for 3 seconds and then the display shows the value of the current set point Press A or to increase or decrease the value until to reach the desired value Press again to confirm the new value Temperature Control Parameters Para Pescnplion Type Min X Unit St Usersetpoint e Minimum set pointalowed Pr 40 2 PoF 2 Maximum set pointalowed Pr n 1e PoF Ce a e rd Difference Description of the Parameter St User set point Users set the working temperature r1 Minimum set point allowed Define the minimum set point St Howe Precision Industrial INC C207 14 Rev 1 0 Last Modify 2015 2 9 4 C207 14 User s Manual r2 Maximum set point allowed Define the maximum set point St rd difference When the temperature value is lt St the compressor stops to wor
16. tting mode moves from one parameter to the previous decreases the value associated with the parameter In set point display mode decreases the value of the set point 4 Button 4 In normal operation if pressed for more than 3 seconds changes the status of the controller ON OFF if pressed together with A for more than 3 seconds activates deactivates the defrosting cycle 1 3 Technical specifications Power supply 115VAC 10 or 230VAC 10 50 60HZz Operating conditions 20 60 C 4 140 F humidity lt 90 RH non condensing Storage conditions 30 70 C 22 158 F humidity lt 90 RH non condensing Front panel index of protection panel installation with IP65 gasket Communication RS485 Modbus RTU Relay outputs 3 relays 10A 250VAC normal open contact Probe NTC 10Kohm 25 C 77 F Probe RT1 used to measure the temperature in the cabinet Probe RT2 used to measure the evaporator temperature Probe RT3 used to measure the condenser temperature Measurement range 45 99 C 49 199 F resolution 1 C F Howe Precision Industrial INC C207 14 Rev 1 0 Last Modify 2015 2 9 e C207 14 User s Manual Temperature accuracy 1 C 20 30 C or 2 F 4 86 F Communication RS 485 bus Modbus RTU mode 2 Function and Parameter Parameters can be divided into essential parameter and advanced parameters Essential parameter St is user set point Advanced parameters are divided into
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