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5. TECHNICAL CHARACTERISTICS 

5.1 Working conditions

The case has a protection as per IP 40 and the terminals as per IP 20. 

The working temperature limits are –10 to 60

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5.2 Mains supply

                      

The standard mains voltage is 230 Vac 50/60 Hz. AC Mains voltages of 240 V, 110 V y 24 V 
50/60 Hz. and  24 Vdc supply voltage are available on order.  

The power consumption is less than 1 W. 

The instrument is not supplied with a mains filter and in the exceptional cases that, due to high 
levels of mains interference, a mains filter is needed, this must be installed externally. Due to the 
low power consumption, almost any small mains filter will be adequate. 

The instrument is supplied with a slow blow (T) 250 mA fuse. 

5.3 Analog Output  

The analog output is configured internally for current or voltage output. 

Current Output                          - Maximum Load  = 600 ohms 

Voltage Output                          - Minimum Load   = 10.000 ohms  

5.4 Pulse inputs 

1.      The input called "COVOL" is designed to work with an electrical contact which closes the 
circuit between terminals 14 and 16 of the terminal strip. Given that this type of input is generally 
slow and to avoid contact bounce, this input is limited to about 200 pulses per second. 

2.      The pick-up input is designed to work with an inductive pick-up using a coil. The input 
frequency in this case is limited to about 2,000 pulses per second. 

5.5 Pulse Output 

                            Frequency                        : The same as the input frequency (max. 2000 Hz). 

The opto isolated open collector has the following characteristics: 

                            NPN Transistor 

                            Maximum Voltage           : 30 Vdc 

                            Maximum Current            : 50 mA 

          

5.6 Norms 

Conforms with Directives 89/336/CEE (EMC) and 73/23/CEE (Low voltage)  

Содержание CI-420

Страница 1: ...t input 3 2 3 Analog output connection 4 2 4 Pulse output connection 4 3 SETTING UP 4 4 CONFIGURATION 5 5 TECHNICAL CHARACTERISTICS 6 5 1 Working conditions 6 5 2 Mains supply 6 5 3 Analog output 6 5...

Страница 2: ...voltage outputs to obtain the following voltage outputs Beginning of Scale Full Scale 0 V 5 V 0 V 10 V 1 V 5 V 2 V 10 V The value of fr the full scale frequency is selected by means of four BCD switc...

Страница 3: ...2 2 1 Pick up Input For the input from turbine type flowmeters which use magnetic inductive pick ups to detect the movement of the turbine blades the wiring must be made as following CI 420 Terminal...

Страница 4: ...ct the four significant digits and with the jumper we select the position of the decimal point To get to the switches a screwdriver can be used to lever out the top cover which is just clipped in its...

Страница 5: ...ent is configured for a COVOL input and 4 20 mA output The JP1 and JP2 jumpers are used to configure the type of input and should not be moved The jumpers JP3 JP4 JP5 JP6 are used to configure the typ...

Страница 6: ...e 5 3 Analog Output The analog output is configured internally for current or voltage output Current Output Maximum Load 600 ohms Voltage Output Minimum Load 10 000 ohms 5 4 Pulse inputs 1 The input c...

Страница 7: ...owing drawings the outside dimensions and the layout of the fastening holes for screws are given The layout of the fastening holes is given looking at the top of the instrument The weight of the instr...

Страница 8: ...ed in the order the result of service or modification by un authorized persons bad handling or accident This warranty is limited to cover the repair or replacement defective parts which have not been...

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