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OSAKA

 - OF 33 AZ - OPERATING INSTRUCTIONS - Vr. 01 - PAG. 1

 

 

OF 33 Z / OF 33 AZ

 

MICROPROCESSOR-BASED 

DIGITAL ELECTRONIC FREEZER 

CONTROLLER 

 

 

 

OPERATING INSTRUCTIONS

 

 

FOREWORD

 

This manual contains the information necessary for the product 
to  be  installed  correctly  and  also  instructions  for  its 
maintenance and use; we therefore recommend that the utmost 
attention is paid to the following instructions.  
Though  this  manual  has  been  issued  with  the  greatest  care, 
OSAKA will not take any responsibility deriving from its use.  
The  same  applies  to  each  person  or  Company  involved  in  the 
issuing of this manual.  
This  document  is  the  exclusive  property  of  OSAKA  which 
forbids  any  reproduction  and  divulgation  ,  even  in  part,  of  the 
document, unless expressly authorized.  
OSAKA  reserves  the  right  to  make  any  formal  or  functional 
changes at any moment and without  any notice. 
 

INDEX 

INSTRUMENT DESCRIPTION 

1.1

 

GENERAL DESCRIPTION

 

1.2

 

FRONT PANEL DESCRIPTION

 

PROGRAMMING 

2.1

 

PROGRAMMING OF SET POINT 

 

2.2

 

PARAMETERS PROGRAMMING

 

2.3

 

PARAMETER 

PROTECTION 

USING 

THE 

PASSWORD

 

2.4

 

PARAMETERS PROGRAMMING LEVEL

 

2.5

 

ACTIVE SET POINT SELECTION

 

2.6

 

ON / STAND-BY FUNCTION

 

2.7

 

CLOCK PROGRAMMING

 

INFORMATION ON INSTALLATION AND USE  

3.1

 

PERMITTED USE

 

3.2

 

MECHANICAL MOUNTING

 

3.3

 

ELECTRICAL CONNECTIONS

 

3.4

 

ELECTRICAL WIRING DIAGRAM

 

FUNCTIONS 

4.1

 

MEASURING AND VISUALIZATION

 

4.2

 

OUTPUTS CONFIGURATION

 

4.3

 

TEMPERATURE CONTROL

 

4.4

 

CONTINUOUS CYCLE FUNCTION

 

4.5

 

COMPRESSOR PROTECTION FUNCTION AND AND 
DELAY AT POWER-ON

 

4.6

 

DEFROST CONTROL

 

4.7

 

MANUAL DEFROST

 

4.8

 

EVAPORATOR FANS CONTROL

 

4.9

 

ALARM FUNCTIONS

 

4.9.1

 

TEMPERATURE ALARMS

 

4.9.2

 

EXTERNAL ALARM

 

4.9.3

 

OPEN DOOR ALARM

 

4.9.4

 

ALARM MEMORY

 

4.10

 

DIGITAL INPUT

 

4.11

 

AUXILIARY OUTPUT

 

4.12

 

FUNCTION OF KEYS “F” AND “DOWN/AUX”

 

4.13

 

KEY USB + OSAKA SETUP: KEY PROGRAMMING 

PROGRAMMABLE PARAMETERS TABLE 

PROBLEMS , MAINTENANCE AND GUARANTEE 

6.1

 

SIGNALLING

 

6.2

 

CLEANING

 

6.3

 

GUARANTEE AND REPAIRS

 

TECHNICAL DATA 

7.1

 

ELECTRICAL DATA

 

7.2

 

MECHANICAL DATA

 

7.3

 

MECHANICAL DIMENSIONS, PANEL CUT-OUT AND 
MOUNTING

 

7.4

 

FUNCTIONAL DATA

 

 

 

1 - INSTRUMENT DESCRIPTION 

 
1.1 - GENERAL DESCRIPTION 

The model OF 33 AZ is a digital controller with microprocessor 
that  is  typically  used  in  cooling  applications  that  have 
temperature  control  with  ON/OFF  regulation  and  defrosting 
control  with  set  time  and  hours  intervals  (Real  Time  Clock 
Defrosting)  by  means  of  electrical  heating  or  hot  gas/cycle 
inversion.  
The instrument has 3 relay outputs, two inputs for PTC or NTC 
temperature  probes  and  a  digital  input,  that  can  all  be 
configured. 
The 3 outputs can be used for controlling the compressor or the 
temperature control device (OUT), the defrosting device (DEF), 
the  evaporation  fan  (FAN)  or,  alternatively  any  of  the  previous 
functions, using an auxiliary device (AUX) or an alarm (AL). 
The  two  inputs  for  the  PTC  and  NTC  temperature  probes 
(which can be selected by parameter) can be used to measure 
the cell temperature (Pr1) and the evaporator temperature (Pr2) 
while  the  digital  input  (DIG)  can  be  programmed  to  carry  out 
various  functions  such  as  defrosting  commands,  selecting  a 
different set of temperature regulations, external alarm signals, 
activating a continuous cycle, and activating an auxiliary output 
etc. 
The  instrument  is  equipped  with  4  programme  keys,  a  4-digit 
display and 9 LED signals, in addition to an internal buzzer that 
is the sound system for alarms. 
Other  important  characteristics  of  the  instrument  are: 
programme 

parameters 

protection 

using 

personalised 

password,  switching  on  and  off  (stand-by)  of  the  instrument 
using  the  front  keys  or  the  digital  input,    configuration  of 
parameters via the COPY KEY device, memorising of two sets 
of  temperature  regulations  that  can  be  switched  and  the 
possibility of power supply in the range 100 ... 240 VAC. 

 
 
1.2 - FRONT PANEL DESCRIPTION 
 

 

 

 

Summary of Contents for OF 33 AZ

Page 1: ...5 PROGRAMMABLE PARAMETERS TABLE 6 PROBLEMS MAINTENANCE AND GUARANTEE 6 1 SIGNALLING 6 2 CLEANING 6 3 GUARANTEE AND REPAIRS 7 TECHNICAL DATA 7 1 ELECTRICAL DATA 7 2 MECHANICAL DATA 7 3 MECHANICAL DIMEN...

Page 2: ...e desired parameter can be selected and pressing the Set key the display will alternately show the parameter code and its setting that can be changed with the UP and DOWN keys Once the desired value h...

Page 3: ...lectronic devices or electromechanical safety and warning system They should be placed outside the measuring and control equipments possible protective devices responding to specific safety requiremen...

Page 4: ...y function through a contact that is normally open and closed when the alarm sounds ALt to control a silenceable alarm device through a contact that is normally closed and then open when the alarm sou...

Page 5: ...abled in WITH HOT GAS or INVERSION OF CYCLE during defrosting the outputs Out and dEF are enabled The automatic defrosting can take place at intervals or if the instrument has an internal clock at set...

Page 6: ...d When the probe Pr2 is used par Pr 2 on the fans as well as being conditioned by the parameters FCOF and FEdF are also conditioned by the temperature control It is possible to set the disablement of...

Page 7: ...zer with an alarm memory ALL or ALL it is necessary to set the parameter tAL yES 4 10 DIGITAL INPUT All the parameters concerning the digital input functions are contained in the group din The digital...

Page 8: ...the second is disabled In this mode the AUX output can be turned off automatically after a certain time that can be set on the parameter tuA With tuA OFF the output is activated and deactivated only...

Page 9: ...frost 2 OFF 00 00 23 59 hrs min OFF 23 dF 3 Time start defrost 3 OFF 00 00 23 59 hrs min OFF 24 dF 4 Time start defrost 4 OFF 00 00 23 59 hrs min OFF 25 dF 5 Time start defrost 5 OFF 00 00 23 59 hrs m...

Page 10: ...dEF FAn AuS ALt AL ALL ALt AL ALL Out 61 Out2 Configuration of output function OUT2 see Out1 OFF Out dEF FAn AuS ALt AL ALL ALt AL ALL dEF 62 Out3 Configuration of output function OUT3 see Out1 OFF Ou...

Page 11: ...250 VAC and OUT3 SPST NO 5A AC1 2A AC3 250 VAC 16 A Max for common pin 1 Electrical life for relay outputs 100000 operat VDE om Installation category II Measurement category I Protection class against...

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