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elektrogas.com

MB
MZ

Servomotors
for butterfly valves VF, VFH

EE157 -1209

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Summary of Contents for MB

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

Page 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...

Page 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 ...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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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