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Vv CM78N_C02_1.ING.doc 28/05/2009                                                     page 1/6 

CM78N 

OPERATING MANUAL 

TECHNICAL SPECIFICATIONS 

 

AC SUPPLY:    

230 or 115 or 24 Vac 50/60 Hz ±10% -4 VA (see the instrument label). 

 

DC SUPPLY:   

24Vdc* or 12 Vdc*  ±15%  4 W (see the instrument label). 

*Remark: the supply negative pole (terminal 1) is connected to circuit 0 Volt (terminal 8). 

 

TRANSDUCER SUPPLY:   

12 Vdc max 60 mA , 5 Vdc 60 mA optional (code X09) 

 

FUNCTIONAL INPUTS:  

accepting signals by NPN/PNP transducers (according to setting) 

 

INPUTS: closing T.min =  

20 mS 

 

OUTPUTS:  

relay outputs with Normally Open contacts. I max 3A V max 220V 

 

COUNT FREQUENCY:  

25 KHz (primary wave) 

 

MEMORY:  

Data, preselections and count record are stored on EEPROM. 

COUNT INPUT SIGNALS 

The instrument accepts count signals by: 

 

Monodirectional encoders with NPN open collector or push-pull output 

 

Bidirectional encoders with NPN open collector or push-pull output 

 

1 Namur inductor with NPN open collector or push-pull output 

 

2 Namur inductors with NPN open collector or push-pull output 90° degree out of phase 

CONNECTION AND MAINTAINANCE

 

Link connections to the quick-coupling terminal box as mentioned in the enclosed diagram C2639. 
To avoid damaging interference it is recommended, as for all low voltage equipment, to use a shielded cable for the 
execution of connections and to separate the signal cable path of the counter from possible connection cables of power 
utilities. 
Counters do not require any particular maintenance. Keys shall not be pressed with sharp objects to avoid damaging of 
the keyboard. 

PRECAUTIONS 

The visualiser is equipped with 2 command outputs which could get into an incoherent state in respect to the machine 
working phase during the installing operations: it is recommended to put the machines in safety before starting the 
configuring operations.

 

MANUAL STRUCTURE 

Pages 1 to 3 of the present manual relate to the instrument 
general working mode. Pages 4 to 6 relate to the operating way 
of each operational mode. 
The paragraph ‘Operating specifications’ – page 2 – gives details 
about the instrument configurations. 

SUMMARY  

page 

Technical specifications ...............................1 
Introduction ..................................................1 
Operational modes description ....................1 
Operating specifications...............................2 
Basic setting ................................................3 
Specific setting.............................................3 
Operational mode 0 .....................................4 
Operational mode 1 .....................................5 
Operational mode 2 .....................................6 

 

INTRODUCTION 

CM78N-C02 can be configured by the user to fit to different 
operational modes. 
The configuration is carried out in two phases: 

Phase 1: Setting the basic operational mode 
Phase 2: Setting the specific functions 

 
In both phases the configuration is set by entering a numerical 
code corresponding to the required operating options. 
The available options are listed in the relevant tables at page 3 of 
the present manual. 
When the instrument is configured according to the requested 
operational mode, it is necessary to enter its specific operating 
parameters. 

 OPERATIONAL MODES DESCRIPTIONS 

There are three basic operational modes available: 

0)   Position visualiser 
1)   Position visualiser  with 2 settable thresholds  
2)   Absolute/relative position visualiser 2 settable thresholds 

and 2 settable multiplying factors 

A list of the main functions of the three different operational 
modes follows: 

OPERATIONAL MODE  0:  

• 

Position visualisation 

• 

Multiplying factor 

• 

Count load 

• 

mm/inch conversion 

• 

Count/display block 

OPERATIONAL MODE 1:  

• 

Position visualisation 

• 

Multiplying factor 

• 

Count load 

• 

mm/inch conversion 

• 

Count/display block 

• 

2 alarm outputs 

OPERATIONAL MODE 2: 

• 

Absolute/relative position visualisation 

• 

2 multiplying factor which can be selected by input (the 

number of decimals of the second factor can be set 
separately) 

• 

Count load 

• 

Count/display block 

• 

2 alarm outputs 

 

Program C.02.1

 

MULTIPURPOSE PROGRAMMABLE 
POSITION VISUALISER

 

Содержание CM78N

Страница 1: ...starting the configuring operations MANUAL STRUCTURE Pages 1 to 3 of the present manual relate to the instrument general working mode Pages 4 to 6 relate to the operating way of each operational mode The paragraph Operating specifications page 2 gives details about the instrument configurations SUMMARY page Technical specifications 1 Introduction 1 Operational modes description 1 Operating specifi...

Страница 2: ...unted pulses in the required measuring unit The multiplying factor value can range between 0 01 and 9 99999 MULTIPLYING FACTOR CALCULATION To define the multiplying factor value it is necessary to know the following data A value that must be displayed for each encoder rotation The value must be expressed in the resolution unit used for the visualisation see the example B number of the encoder puls...

Страница 3: ...ng of the operating functions specific for the chosen operational mode SPECIFIC SETTINGS This phase can also be accessed pressing F and when the display shows Ch Set entering the key sequence Arrow 1 Arrow 6 Arrow 2 The setting is made by pressing the arrow key corresponding to the digit to be modified until reaching the number corresponding to the required function According to the chosen operati...

Страница 4: ...er key cancels the operation INPUTS OUTPUTS The instrument is equipped with three inputs performing the following operations IN1 load see paragraph specific settings IN2 mm inch display switch IN3 count block or visualisation block see par basic settings Outputs are not used in this operational mode LOAD BY INPUT Closing input IN1 the LOAD value is displayed If the function load on the closure sta...

Страница 5: ...g operations IN1 load IN2 mm inch display switch IN3 count block or visualisation block IN1 LOAD BY INPUT Closing input IN1 the LOAD value is displayed If the function load on the closure state was selected the pulses count is blocked until input IN1 is opened again IN2 mm inch CONVERSION Closing inpunt IN2 the display indication is switched form mm to inch The inch displayed value has one decimal...

Страница 6: ...N3 count block or visualisation block IN1 ABSOLUTE VALUE LOADING On the input IN1 closure front the LOAD value is entered into the absolute count record IN2 MULTIPLYING FACTOR 1 2 SELECTION Closing input IN2 the display indication is switched from Displayed RECORD COUNT x FACTOR 1 to Displayed RECORD COUNT x FACTOR 2 The number of displayed decimals corresponds to the setting Factor 2 decimals see...

Страница 7: ......

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