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HB Products HBDF MK2, Instruction Manual

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instruction manual - HBDF –mk2 – defrost sensor (013-UK) 19/03-2019 WWW.HBPRODUCTS.DK 

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WE INCREASE 

UPTIME

 AND 

EFFICIENCY

 

IN THE REFRIGERATION INDUSTRY 

 

Instruction Manual  

HBDF MK2 – Defrost Sensor  

“Demand defrost”, for automatic defrosting of evaporators  

 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

        

 

Simple Setup, only two parameters and execution of a zero/start point during start-up. 
Can operate in two modes: 
 1: Only analog mA output (“mA only”, where the defrost start is controlled by an PLC) 
 2: Digital relay output with analog mA output 

 

Summary of Contents for HBDF MK2

Page 1: ...NDUSTRY Instruction Manual HBDF MK2 Defrost Sensor Demand defrost for automatic defrosting of evaporators Simple Setup only two parameters and execution of a zero start point during start up Can opera...

Page 2: ...nd defrost for automatic defrosting of evaporators 1 Table of Contents 2 Safety Instructions 4 Introduction 5 Measuring Principle 6 Design 6 Software 6 Technical Data 7 Function 8 Installation 10 HBDF...

Page 3: ...7 01 03 2019 MME MME When running only mA output it stops at 18mA and goes to 19mA when heater set point is reached see page 8 Choice of FREEZER or ICE BANK mode see page 3 1 4 2 07 03 2019 LSN Altera...

Page 4: ...E Contains important additional information about the product and provides further tips The person responsible for operation must commit to adhering to all the legislative requirements preventing acci...

Page 5: ...rs and execution of a zero start point and a Calibration with frozen dry evaporator surface surface with thin layer of frozen ice as after defrost is the optimal start point The length of the wire ent...

Page 6: ...When liquid covers the sensor the measured capacity is changed The conductivity of a material can vary depending on temperature chemical composition and the homogeneity of the material and therefore...

Page 7: ...tricity consumption 600 mA Electrical connection Screw terminals Analogue output 4 20 mA Max load 500 ohm Relay output 2 x 5A NO NC Relay output 24V 2 x 3A NO NC Installation conditions Ambient temper...

Page 8: ...with mA and digital start and stop function Advanced Calibration The calibration should be carried out before ice begins to build up When the evaporator is free of ice the sensor emits 4mA Depending...

Page 9: ...mk2 1 4 0 12 09 2017 MME When running only mA output it stops at 18mA and goes to 19mA when heater set point is reached The PLC must have a timer delay to ensure frost condition remaining water drople...

Page 10: ...n to measure when all the ice has melted 5 Normally installed with a standard unshielded cable If the EMC is higher than described in EN 61326 a shielded cable must be used Note To have a proper groun...

Page 11: ...the wire windings can be varied from 100 to 500mm depending on evaporator size and wire length When estimating length to be ordered consider both the vertical sections of the wire and the connecting...

Page 12: ...st start level E g 50 stops the mA output at 12mA Defrost stop temp Defrost stop temperature when the digital stop relay is activated and the sensor delay starts running mA only function is 19mA Senso...

Page 13: ...s built in relays for start stop defrost and external temperature sensor for measuring when the ice is melted Should normally be used with a master defrost controller or a PLC simple defrost with elec...

Page 14: ...WWW HBPRODUCTS DK 14 17 WE INCREASE UPTIME AND EFFICIENCY IN THE REFRIGERATION INDUSTRY Application examples Safety Defrosting with hot gas must be performed in a safe way in order to ensure that ther...

Page 15: ...st with electric heater LED Indication and Calibration The HBDF MK2 sensor is primarily designed to measure ice thickness where the analoge 4 20mA output indicates the ice thickness the built in relay...

Page 16: ...fan sensor delay timer end Fault Detection Fault Reason Correction of fault No LED is on no function No supply to the sensor or defective cable Check for fault in the power supply or replace the supp...

Page 17: ...ronical part Complaints are processed by HB Products dealers distributors Please consider their complaint procedures before returning the sensor Spare Parts Position Designation Specification Product...

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