1.1 | Q - | How can I enter the "Installation Menu"? |
| A - | To access the "Installation Menu" you have to press simultaneously STOP+UP+DOWN and after that you have to enter the password 956.
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1.2 | Q - | What is C6 parameter on "Installation Menu"? |
| A - | This parameter enables the regulation of the speed by an encoder feedback, connected to the inverter through the digital inputs INPUT1 e INPUT2; with this feedback the precision of the motor's speed is better.
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1.3 | Q - | How can I enter the "User Menu" using the integrated keyboard? |
| A - | To enter the "User Menu" it is necessary to press at the same time the buttons STOP, UP, DOWN and after that putting the password "123".
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1.4 | Q - | Can I restore the factory parameter through a software reset? |
| A - | No, it is not present into the software Smartdrive the possibility to restore the factory parameter through a software reset.
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2.1 | Q - | The Smartdrive has an overload capacity of 150% for 60 seconds or 200% for 1 second. Which type of overload is it? |
| A - | This is referred to the current overload.
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2.2 | Q - | Why does the smartdrive output torque is constant up to 87Hz only for three-phase inverter and not for single-phase inverter? |
| A - | The torque to the motor shaft depends from the magnetic flow and its value is proportional to the ratio voltage/frequency. To mantain constant the torque we need to mantain constant the magnetic flow according the ratio 230V/50Hz (with motor star connection) and according the ratio 400V/50Hz (with motor delta connection). The maximum voltage generated by the single-phase Smartdrive and supplied to the motor is 230V , then to guarantee always the same magnetic flow according to the ratio 230V/50Hz, is necessary to limit the frequency at 50Hz. Instead if the Smartdrive is three phase, the maximum voltage reachble is 400V. In this case, since the nominal magnetic flow with motor delta connection is proportional to 230V/50Hz, it will be also at 400V/87Hz (=230V/50Hz). hence with the three phase Smartdrive is possible guarantee to the motor always the same nominal magnetic flow up to 87Hz and so the constant torque.
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2.3 | Q - | Is it possible to supply the Smartdrive three-phase with 480V? |
| A - | No, it is not possible, because the Smartdrive three-phase can be supplied with 400V +/-15%, so 480V is out of this range.
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2.4 | Q - | Is it possible to mount the Remote Control - I/O expansion board - RS485 Modbus board - CANBus board on the Smartdrive in a second time after sales? |
| A - | Yes, it is possible to mount the Remote Control - I/O expansion board - RS485 Modbus board - CANBus board later on. It is necessary to open the inverter and insert the optional board into the outfitted spaces with connectors. This operation must to be made with the inverter disconnected from the power supply and with careful by an experienced technician, in order to avoid any connection error that might jeopardize the smooth operation of the motor-inverter.
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2.5 | Q - | Is it the Smartdrive NEMA / UL-CSA certified (North American market)? |
| A - | No, the Smartdrive is not certified UL/CSA yet.
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5.1 | Q - | Does the Smartdrive have any protection (like “over voltage / over current”) that automatically stop it in case of heavy/dangerous working conditions? Is there any possibility to restore the original default settings after the re-start? |
| A - | Smartdrive has the protection for "over current/over voltage" that automatically disables/switchs off the inverter motor in case of any dangerous condition, such as:
1) deceleration ramp too fast or high inertia loads = over voltage alarm;
2) incorrect connections = over current alarm;
3) acceleration ramp too fast = under voltage alarm and/or over current alarm.
Once that the Smartdrive has gone in alarm is necessary to press the stop botton to reset the alarm. The Smartdrive is designed to provide to the motor maximum overload current. Greater overload current conditions are prevented through a reduction of the current and a consequent automatic reduction of the motor torque and a loss of motor's speed. Lasting overload current conditions always involve an high temperature alarm from the inverter. After an alarm, to reset and restore the functioning of the Smartdrive, just pres the stop key.
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5.2 | Q - | Is it possible to restart Smartdrive automatically after being unplugged/re-plugged from the power supply (or disconnected-reconnected) without pressing any button? |
| A - | It is possible to restart Smartdrive automatically using the digital inputs. In particular, it is necessary to connect the +12V from CN1 with the digital INPUT1 from CN2, and the MASSA from CN1 with the COM on the CN2 and setting these parameters:
C21=SI C24=1
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5.3 | Q - | Why is Smartdrive, unlike an inverter as a cabinet inverter, not require any configuring operation from the customer? |
| A - | Into Smartdrive the inverter-motor combination is made by Motovario and its software is optimized to achieve the best performance. For this reason, the inverter and motor should never be disconnected with each other in order to preserve the proper functioning of the system as provided for and guaranteed by Motovario.
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5.4 | Q - | How is it possible to vary the frequency of input power supply? |
| A - | Smartdrive offers 5 different ways, among them alternatives, for the selection of the frequency of the motor. The choice is made by the user by parameter C0 values which correspond to 5 different programming:
1- the variation of the frequency is obtained by rotating the potentiometer on-board;
2 - the frequency is modulated through an external analog signal connected to the inverter by the optional expansion I/O board;
3 - you change ther frequency using the Up / Down (arrows) located on the keyboard or through a special inverter control word transmitted via serial port or via an external fieldbus controller process (eg PLC) in the latter case, the inverter must be equipped with the optional RS485 board or CANBus board;
4 - the reference frequency is supplied to the inverter and the digital inputs. INPUT1 and INPUT2 from an external incremental encoder which impose a speed feedback to the motor;
5 - the frequency reference is produced by an external square wave generator applied to the digital INPUT3.
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5.5 | Q - | In case of speed-change using an external analog selector (varying the input voltage signal there is a speed-change), how can i calculate the input voltage value to obtain the desidered frequency? |
| A - | Input voltage range 0-10Vdc
Vdc Output = 10Vdc * (Hzrequired - C2)/( C1-C2)
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5.6 | Q - | Can the Smartdrive supply an external component (for example a photocell)? |
| A - | Yes, it can. In case of direct supply by inverter board is possible to use 12Vdc only. In case of independent/external power supply is possible to use any voltage in the range 12-24Vdc, due to the max signal usable by Smartdrive as feedback (see Catalogue page 7).
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5.7 | Q - | In case Smartdrive is required to provide an auxiliary supply to the externals signal devices (eg photocells), what can it offer? |
| A - | Smartdrive provides at 12VDC connection (100mA) which can be used to supply both digital inputs of the inverter and auxiliary extrnal devices.
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5.8 | Q - | There is the possibility to have some presetted frequencies? |
| A - | No, currently is not possible to have presetted frequencies to change the speed rapidly. The only way to change the frequency is by the potentiometer, on board or remotely, and if it is present with the keyboard on board or remotely.
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