User Manual Climate Controller KR494 Version
Contents
1. constant 25 recirculated air mode Change over heating to ventilation Ta gt Ts 7 5K simultaneousTrR gt Ts or if Ta gt Ts 11K simultaneous Tr gt Ts 3K Ventilation closed constant 25 Fresh air mode Change over ventilation after heating Tr lt Ts 0 3K Change over ventilation after air conditioning Ta gt Ts 10K simultaneous Tr gt Ts 0 7K or if Ta gt Ts 14K simul Ta gt Ts 5K Air conditioning closed 25 100 linear increasing Fresh air mode between Tr Ts and Tr Ts 4 5K Air conditioning off Ta lt Ts 16K or Tr lt Ts Control off closed off Fresh air mode Control states of frontbox State Water valve Refrigerant agent valve Heating PID Controller off Change over to cooling Tre gt Ts 1K Cooling closed on if air conditioning on Refrigerant agent valve off Tre lt Ts Delay time after agent valve off refrigerant Tre gt Tansaug 1 5K In depedance of the air flap position outdor or inside temperature is used or 5 minutes after refrigerant agent valve switch off The registration of frontbox temperature results from a sensor in the air outlet The adjusted setpoint is copied to the real setpoint by characteristic curve The results are the necessary temperatures for screen clearing Schedule of adjusted and depending real set points of the frontbox Adjusted 18 19 20 21 22 22. 6 Displayed inside temperature Inside temperature in C Displayed outdoor temperature Outdoor temperature in C automaticallay displayed if outdoor temperature is below 3 C Displayed state of air conditioning The air conditioning symbol is displayed if air conditioning is on P lt symbol is indicated if under pressure is detected and P gt symbol is indicated if over pressure is detected while air conditioning is in operation Displayed state of frost warning The frost warning symbol is displayed if outdoor temperature is less than 3 C After 10 seconds outdoor temperature is automatically displayed Displayed state of battery voltage If the battery voltage is less than 21 5V for more than 30 seconds it is indicated on the display In this state all functions of the system are locked If the battery voltage is higher than 25V for more than 30 seconds all functions are released again Page 4 7 Heinkelstrasse 5 D 71272 Renningen Phone 49 0 7159 923 0 Fax 49 0 7159 923 108 3 Test programs Switching and state displaying of all connected units are enabled any time by the test programs If running these there is no monitoring of the outputs For that reason only qualified technicians may execute this Carrier gn ee SUTRAK Key Display Description Start T1 T6 Test menue The version of software is di
3. T11 distribution of upper air no function with this version T21 distribution of lower air no function with this version T12 T22 Temperature setting front box By pressing T12 the set value of the frontbox temperature control increases in steps of 1K by pressing T22 the set value decreases in steps of 1K range from 18 C to 28 C ZE defrost function inactive key T3 temperature control front box active key T2 Page 2 7 Heinkelstrasse 5 D 71272 Renningen Phone 49 0 7159 923 0 Fax 49 0 7159 923 108 Carrier ee SUTRAK Function Description Requirement T13 T23 blower setting front box The blower speed of the front box increases 1 step by pressing T13 resp decreases by pressing T23 The max step is 6 with function ME otherwise 3 If Step O blower off is set kKey LED T13 turns off During air conditionining operation of the frontbox it is not possible to switch off the blower ZE defrost function inactive key T3 T24 Clock setting modes no function with this version T25 Passenger Display temperature passenger compartment ZE compartment temperature display T26 outside Display outside temperature ZE temperature display T4 temperature On off switching of temperature control of passenger compartment ZE control of passenger Convector valve air conditioning air flaps and the blower speed are compartment con
4. selected T6 Stop output is displayed inverted The state of the output is displayed by ON or OFF If there is no connection to the CAN bus node with the selected output a flashing symbol is displayed With keys T11 and T21 the actually selected output is switched without dependace of temperature control T26 Start Input test With keys the different inputs are selected The state of the input T6 Stop is displayed by ON or OFF If there is no connection to the CAN bus node with the selected input a flashing symbol is displayed T26 Start Can Bus test The version of software of the connected node is displayed Nodes T6 Stop without connection are displayed by a flashing T26 Start Blower test The state of blowers or groups of blowers is displayed With keys T6 Stop t the different blower groups are selected The actually selected group is diplayed inverted With keys T11 and T21 the actually selected output is switched slow fast without dependace of temperature control Page 5 7 Heinkelstrasse 5 ea gt D 71272 Renningen ee i Phone 49 0 7159 923 0 Fax 49 0 7159 923 108 4 Control and adjust functions 4 1 Initial switching on After connecting the power supply and initial switching of ignition battery the functions of frontbox passenger compartment temperature control and frontbox blower are activated 4 2 Functions
5. 3 24 25 26 27 28 Real 16 17 6 19 3 21 26 31 36 41 46 51 56 4 8 Other control functions 4 8 1 Control of open door signal The rotation speed of the roof blowers is reduced to approx 20 while doors are open 5 Test program With starting a test program the actual states of outputs are stored Modifications by test programms outputs servo und Blower jare restored after finishing the test program by running control processes Page 7 7
6. Heinkelstrasse 5 D 71272 Renningen Phone 49 0 7159 923 0 Fax 49 0 7159 923 108 User Manual Climate Controller KR494 Version without Roof top Heating Issue Februar 2003 Software V1 05 Page 1 7 Heinkelstrasse 5 D 71272 Renningen Phone 49 0 7159 923 0 Fax 49 0 7159 923 108 1 Key Functions 1 1 Standard functions The function is active if the corresponding key LED is on Abbrevations ZA Ignition Battery off ZE Ignition Battery on ME Engine on Carrier ga es Function Description Requirement T1 recirculated air front box Change over recirculated air fresh air operation frontbox ZE defrost function inactive key function T3 T2 temperature control front box On off switching of temperature control frontbox According to set actual value of the temperature the water valve und the refrigerant valve of the frontbox are controlled refrigerant valve only with running air conditioning of the passenger compartment ZE defrost function inactive key function T3 T3 defrost function front box On off switching of defrost function front box The water valve opens completely the blower runs with full power The recirculated air flap changes to position of fresh air By activating this function all other actual functions are stored and with deactivating restored again Keys T1 T2 T12 T22 T13 T23 are not in function during defrost operation ME
7. ZA With ignition off the display is deactivated too There are only available the functions of test program and Reset 4 3 Functions ZE With ignition battery on all functions are available except frontbox and defrost Temperature control of the passenger compartment only runs in convector heating mode Roof blowers and air conditioning are deactivated A manual activating of the roof blowers is possible The speed control of roof blowers and frontbox blower is limited by step 3 With switching off battery ignition all active control adjust functions are stored They are restored by a renewed battery ignition switching on 4 4 Functions ME With running engine all functions are available With switching off the engine the operation modes forced heating and forced cooling are reset to minimal resp maximal setpoint The operation modes of defrost function frontbox are stored wih switching off They are restored by a renewed engine switching on The test programs are finished because of safety reasons A renewed start of the test program is possible 4 5 Under voltage If the battery voltage is less than 21 5V for more than 30 seconds it is displayed by a warning lt 21 5V In this state all functions of the system are locked If the battery voltage is higher than 25V recharging of battery for more than 30 seconds all functions are released again 4 6 Calibration The servo motors control works with a position manageme
8. artment is forced to ME of passenger heat by a renewed permanent pressing of this key about 2 seconds compartment The setpoint is indicated as an H the convector valve completely opens T27 Forced cooling If the setpoint is set to 18 C the passenger compartment is forced to ME of passenger cool by a renewed permanent pressing of this key about 2 seconds compartment The setpoint is indicated as a C the convector valve completely closes air conditioning is switched on the roof blowers are forced to run with maximum speed T25 T26 By simultaneously pressing of these keys the LCD display contrast ZE simultaneously increases to 1 step After reaching the maximal contrast the display LCD display contrast contrast is set to minimum T1 T6 Simultaneously pressing of these keys Start of test programs to check simultaneously all electronical components and connected units Test program 71 711 721 Simultaneously pressing of these keys forces a Reset simultaneously equivalence to conect disconect the power supply Renewed start Reset 2 Display functions Function Description Requirement Displayed set point of the frontbox Set point in C Displayed set point of passenger compartment Set point in C resp H forced heating C forced cooling Displayed blower speed of passenger compartment Blower speed of passenger compartment step 1
9. nt For that the end points for the servos have to be measured to find the maximum movement In order to measure this both end positions of the valve have to be reached and the corresponding parameters of the potentiometers must be internally saved This procedure is called Calibrating For a correct function of the calibrating and the following position management it is necessary that the potentiometers of the servos motors are connected correctly and the servos are moving in a proper way without any brakes Via the test mode Servo all motors can be checked With selecting the output OUT the displayed potentiometer parameter must decrease with OUT must increase Because its possible to interrupt calibrating when starting the test program servo the calibrating will be started from the beginning after the test program is finalized Page 6 7 Heinkelstrasse 5 D 71272 Renningen Phone 49 0 7159 923 0 Fax 49 0 7159 923 108 4 7 Control functions Abbreviations T temp outdoor Ts temp setpoint Tr temp inside Trg temp frontbox Control states of passenger compartment Carrier a we S State Water valves Roof blowers recirculated Fres h air flaps Heating with ZE Convector valve control with P controller off recirculated air mode Change over to ventilation not available with ZE Heating with ME Convector valve control with P controller
10. splayed for example 105 simultaneous The different test programs are selected by all keys T12 T22 T13 T23 Stop T1 T14 T27 T15 T28 The selected test program ist displayed inverted In this example Test LED T26 Start LED test All key LEDs are switched on in succsession T1 T2 T3 T4 T5 T6 T6 Stop T11 T13 T16 T21 T24 T25 T26 T29 T26 Start LCD test The LCD display is filled from the left to the right side and erased T6 Stop subsequently T26 Start Key test The keys are displayed by rectangles a pressed key by a filled an T21 T29 unpressed key by unfilled rectangle In this example T26 is pressed simultaneous Stop Attention It is not possible to display more than one pressed key T26 Start Servo motor test With keys the different servo motors are selected The T6 Stop two outputs and the potentiometer input of the selected servo motor are displayed If there is no connection to the CAN bus node with the selected servo motor a flashing symbol is displayed With keys T11 and T21 the direction of the motor is controlled The display changes from OFF to ON There is a correct working of the servo if you press key T11 and the display symbol changes from OUT to ON just as the value of the potentiometer input decreases T26 Start Output test With keys the different outputs are selected The
11. trolled in dependence of the set actual value of the temperature T5 Manual ventilation On off switching of manual ventilation of passenger compartment ZE of passenger compartment T6 recirculated air The passenger compartment is set in return air operation If this ZE of passenger compartment function is deactivated and temperature control is active the flap position is set in dependance of of the temperature If this function is deactivated and temperature control is not active the flap is set in fresh air position T14 T27 Temperature setting of passenger By pressing T14 the set value of the frontbox temperature control increases in steps of 1K by pressing T27 the set value decreases in key function temperature control compartment steps of 1K range from 18 C to 28 C passenger compartment T4 active T15 T28 The blower speed of the front box increases 1 step by pressing T15 key function manual resp decreases by pressing T28 The setting range with ME is step 1 6 with ZE step 1 3 ventilation passenger compartment T5 active T16 Reheat operation no function with this version T29 Auxiliary heating no function with this version Page 3 7 Heinkelstrasse 5 D 71272 Renningen ne ee Fax 49 0 7159 923 108 _ Carrier 1 2 Special functions Function Description Requirement T14 Forced heating If the setpoint is set to 28 C the passenger comp
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