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ELEKTROGAS – MANUALE TECNICO 

 6-10 

 

 

 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

 

Fig.6 

 
 
 
 
Manual mode 

For  a  simplified  commissioning,  the  actuator  can  be  operated  manually.  The  manual  mode  is 
useful to determine the operating positions for the process, such as the High/Low fire positions.  

To enter in the manual mode press the switch S1 downwards (LED1 lights up). Now it's possible 
to move the valve toward the MAX. position (counter clockwise rotation seen from the top), by 
pressing the push button B2, and to move the valve toward the MIN. position (clockwise rotation 
seen from the top), by pressing the push button B1 (factory setting provides the cams C1 and 
C2 at 0° and 90°). The initial rotating speed is 0. 25 RPM, this lets operator perform an accurate 
adjustment of position. If the button is pressed for more than 3 seconds the rotating speed shifts 
to 1 RPM. 
 
Setting of the MIN and MAX positions 
In manual mode it's possible to memorize current position as MIN (MAX) by pressing button B4 
(B3)  for  more  than  3  seconds  (shorter  pressing  are  not  considered).  When  the  position  is 
memorized, LED2 lights up and the button may be released.  
MAX position can not be lower than MIN position memorized (and vice versa). In this case the 
position  won't  be  memorized  and  an  alarm  will  go  up  (see  "Alarms  Chart")  until  a  new  proper 
position is memorized. 
 
Running time setting (continuous) 
With a proper software configuration made by terminal T1, running time can be chosen also on 
field. By means of terminal T1, changing the parameter 

RUN_MODE

 from 1 to 5 as follows: 

 

RUN_MODE 

 

Running time according to 

RUN_TIME

 parameter (default

Running time may be adjust freely (manual mode) 

 
Press both B3 and B4 buttons at the same time, for the time required (LED3 lights up). Running 
time must  be  included  between  7  s  and  60  s,  otherwise  its value  won't  be  memorized  and  an 
alarm  will  go up  (see  "Alarms  Chart")  until  a  new  proper  time  is memorized.  A  proper  running 
time is operative in automatic mode only. 

 

Opening (B2) 

Automatic/ 
Manual (S1) 

Closing (B1) 

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Содержание MB

Страница 1: ...elektrogas com MB MZ Servomotors for butterfly valves VF VFH EE157 1209 ...

Страница 2: ...r gearbox Status LEDs and position indicator of the motor visible externally Provided with four cams with double adjusting screw adjustment tool included in the housing Two switches for manual adjustment of the position Two switches to memorize minimum and maximum position MZ Analogue input and output signals for electronic positioning MZ Very high positioning precision The same unit is suitable f...

Страница 3: ... graduated scale and locking screw to setup high fire rate of the burner In case of combustion process with excess of air or gas VF butterfly valve can be used coupled to a Lambda sensor for ratio correction In case of combustion process with pre heated air VFH butterfly valve can be used MZ servomotor WARNING Location and mode of installation must be in compliance with local rules in force VF MZ ...

Страница 4: ...50 60Hz 110VAC 50 60Hz 24V AC DC Voltage tolerance 15 10 Power consumption 5 W Enclosure IP65 EN 60529 Cable gland 2x ISO 20 EN 50262 Torque Holding torque 5 Nm Operating time 0 90 From 7s up to 60s adjustable Outputs MB Potentiometer 2 5 KΩ Ω Ω Ω Analogue inputs MZ Signal type Overload max Load impedance 0 10V 11Vdc 100KΩ Ω Ω Ω 0 20mA 22mA 250Ω Ω Ω Ω 4 20mA 22mA 250Ω Ω Ω Ω Analogue outputs MZ Sig...

Страница 5: ...potentiometer in order to suppress interferences in the input signal MZ servomotor is provided with buttons for manual adjustment of the position and for memorization of minimum maximum limits Some LEDs visible even externally show the current status of the unit e g manual operation memorization errors etc The most of settings can be made with a DIP switch on board e g selection of analogue signal...

Страница 6: ... for more than 3 seconds shorter pressing are not considered When the position is memorized LED2 lights up and the button may be released MAX position can not be lower than MIN position memorized and vice versa In this case the position won t be memorized and an alarm will go up see Alarms Chart until a new proper position is memorized Running time setting continuous With a proper software configu...

Страница 7: ...s applied to relay terminals the actuator opens If no input signal is applied to relay terminals the actuator closes Hysteresis and Filtration The input analogue signal is processed internally with a resolution of 12 bit corresponding to 0 025 This allows with a 4 20mA input signal for example to detect a change of 0 005 mA hysteresis If the input signal fluctuations are too greatly e g due to noi...

Страница 8: ... 8 9 10 ON OFF 0 10V 1 2 3 4 5 6 7 8 9 10 ON OFF 4 20mA 0 20mA programmable by means of T1 Behaviour without input signal 4 20mA 1 2 3 4 5 6 7 8 9 10 ON OFF Open position 1 2 3 4 5 6 7 8 9 10 ON OFF Closed position 1 2 3 4 5 6 7 8 9 10 ON OFF Stop Sense of rotation 1 2 3 4 5 6 7 8 9 10 ON OFF Right 1 2 3 4 5 6 7 8 9 10 ON OFF Inverted 2 point control 1 2 3 4 5 6 7 8 9 10 ON OFF 2 point control act...

Страница 9: ...m type Description Cause 1 1 Flashing Permanent light Warning Input signal is missing 4 20mA Cable break 2 2 Flashings Permanent light Warning Invalid position Operator has attempted to memorize an invalid position e g MIN MAX 3 3 Flashings Permanent light Warning Invalid running time Operator has attempted to memorize an invalid running time out of 7 60 s range 4 4 Flashings Permanent light Warni...

Страница 10: ...dard Optional Programmable T1 Not available Specification is omitted if does not match any requirement Manufacturer reserves the right to update or make technical changes without prior notice Standards and approvals The actuators meet current European approval requirements regarding electrical safety Electromagnetic Compatibility 2004 108 CE Low Voltage Directive 2006 95 CE Quality Management Syst...

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