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NOTES

Copyright NASTEC srl

Nastec reserves the right to modify informations in this manual without any notice.

Nastec srl, Via della Tecnica, 8, 36024, Mossano, Vicenza, Italy, Tel. +39 0444 886289, Fax +39 0444 776099, www.nastec.eu,
[email protected]

Содержание MIDA 203

Страница 1: ...Installation and use manual MIDA manMIDA_eng_10...

Страница 2: ...e control 7 4 2 1 Pressure tank 7 4 2 2 Pressure sensor 7 4 3 MIDA installation for differential constant pressure applications 8 4 3 1 Sensors wiring 8 4 3 2 Programming 8 5 Electric wiring 9 5 1 Pro...

Страница 3: ...operation installation maintenance and repair must be carried out by trained skilled and qualified personnel Failure to observe and follow the instructions in this manual may result in dangerous and...

Страница 4: ...ction IP55 NEMA 4 or motor IP when connected to motor terminal box Connectivity Serial RS 485 for COMBO operation up to 8 units Bluetooth SMART for monitoring and programming Modbus RTU Protect the de...

Страница 5: ...y of MIDA base with motor terminal box see drawing The rubber gasket on MIDA base grants the sealing between MIDA and motor case Pierce the rubber gasket only in correspondence of the 4 threaded holes...

Страница 6: ...on the wall keep the protective label on MIDA base in order to grant the ingress protection Follow below instructions how to fix MIDA base on the wall WARNING use the provided O rings with screws in o...

Страница 7: ...ple if the max water flow is 50 liters min the pressure tank should have a capacity of 5 liters If the max water flow is 20 gpm the pressure tank should have a capacity of 2 gallons Pre charge pressur...

Страница 8: ...2 SENSOR 1 discharge AN1 4 20 mA signal 15V 15 Vdc supply SENSOR 2 suction AN2 4 20 mA signal 15V 15 Vdc supply In the advanced parameters menu it is therefore necessary to set the logic AN1 AN2 as d...

Страница 9: ...e insulated female faston terminals 6 3x0 8 mm In order to respect limits of EN61800 3 Category C1 for irradiated disturbs it is necessary to add a ferrite on input phases L and N The ferrite and cabl...

Страница 10: ...oss section depending on cable length and motor power The screen has to be connected to both side Follow the below figure for correct cable stripping Analog inputs sensors AN1 4 20 mA sensor 1 AN2 4 2...

Страница 11: ...s by placing the screen at one end using the provided EMC clips Digital outputs NO1 COM1 motor status closed contact with motor running NC1 COM1 motor status closed contact with motor stopped NO2 COM2...

Страница 12: ...d to use pre insulated ferrules Use shielded signal cables by placing the screen at one end using the provided EMC clips MODBUS RTU serial S2 S2 G It is recommended to respect the polarity It is recom...

Страница 13: ...ignal motor and power supply cables In order to respect limits of EN61800 3 Category C1 for irradiated disturbs it is necessary to add a ferrite on input phases L and N The ferrite and cabling instruc...

Страница 14: ...y fix frequency mode Keep pressed the Up button or the Down button more than 5 seconds in order to enable the set adjusting If the SET led is off it is not possible to change the set value When two or...

Страница 15: ...umption and check alarms history Perform reports with the possibility to insert notes images and email them or keep them into the digital archive Make programs save them in the archive copy them to ot...

Страница 16: ...n logic for analog input AN1 AN2 independent lower value higher value difference 1 2 N O By selecting N O normally open MIDA runs the motor if the digital input 1 is open motor will be stopped if the...

Страница 17: ...t IN2 External speed control motor frequency by using analogical input AN4 10 Maximum value allowed in the system If the readen value goes over this value an alarm occurs and the pump is stopped Pump...

Страница 18: ...pressure set in a linear relation with respect to frequency It can perform the following test to verify the correct value of compensation 1 install a pressure gauge away from the pressure sensor 2 op...

Страница 19: ...ontrol MIDA powers the motor again otherwise MIDA will stop the pump 0 1 Value drop below the set value required to restart the pump during control ramp 0 5 Value drop below the set value required to...

Страница 20: ...ween MIDAs in the group 0 stays for 5 minutes 0 Delay time with which the slaves start after the variable speed pump has reached the maximum frequency and the pressure value has fallen below set value...

Страница 21: ...ieve the set pressure or frequency value Longer times delay the system reaching the preset value but better protect system components Excessively long ramp up times can create difficulties in MIDA set...

Страница 22: ...quadratic characteristic is normally used with centrifugal pumps The selection of torque characteristic should be done ensuring a smooth operation a reduction of energy consumption and a lower level o...

Страница 23: ...COMBO serial connection MIDA s communication is made through a private protocol using the COMBO serial port Each MIDA up to 8 units have to be connected to each other by using a tripolar cable 0 5 mm...

Страница 24: ...ailure of the master in a Combo system it will be replaced by slaves with priority based on slave address As a consequence all parameters must be setup on each units It recommend to use Copy to functi...

Страница 25: ...IDA stops the pump MIDA tries to run the pump every 10 20 40 80 160 minutes and then the pump is stopped WARNING if dry running protection occurs MIDA will try to start the pump automatically Be sure...

Страница 26: ...reached the maximum value accepted by the system Check possible causes of reaching max value Check the max alarm value setting MIN VALUE ALARM Yellow ALARM led 8 blinks Measured value has reached the...

Страница 27: ...d to other electrical equipment with which it is to form individual units It must therefore that the putting into service of this unit with all its subsidiary equipments to be performed by qualified p...

Страница 28: ...NASTEC srl Nastec reserves the right to modify informations in this manual without any notice Nastec srl Via della Tecnica 8 36024 Mossano Vicenza Italy Tel 39 0444 886289 Fax 39 0444 776099 www naste...