Manuale d’uso / di manutenzione del prodotto hitachi series inverter del fabbricante Hitachi
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WJ200 Series Inverter Quick Reference Guide • Single-phase Input 200V class • Three-phase Input 200V class • Three-phase Input 400V class Hit achi Industrial Equipment Systems Co.
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1 UL ® Cautions, W arnings a nd Instructions xii W arnings and Cautions for T roub leshooting and Mainte nance (S tandard to comply with : UL508C,CSA C22.2 No.14-05) W arning Markings GENERAL: These devices are open type Power Conversion Equipment. They are intended to be used in an enclosure.
2 T erminal symbols and Screw size Inverter Model Screw Size Required T orque (N-m ) Wire range WJ200-001S WJ200-002S WJ200-004S M3.5 1.0 A WG16 (1.3mm 2 ) WJ200-007S M4 1.4 A WG12 (3.3mm 2 ) WJ200-015S WJ200-022S M4 1.4 A WG10 (5.3mm 2 ) WJ200-001L WJ200-002L WJ200-004L WJ200-007L M3.
3 Fuse Sizes Distribution fuse size ma rking is included in the manual to indicate that the unit sh all be connected with a Listed Cartridge No nrenewable fuse, rated 600 V ac with the current ratings.
4 Inverter S pecification Label The Hitachi WJ200 inve rters have product labels located o n the right side of the housing, as pictured below . Be sure to verify that the specifications on the label s match your power source, and application safety requirement s.
5 WJ200 Inverter S pecifications Model-specific t ables for 200V and 400V class inverters The following t ables are specific to WJ200 inverters for the 200V and 400V class model groups. Note that “Gene ral S pecifications” on p age in this chapter apply to both volt age class group s.
6 WJ200 Inverter S pecifications, continued… Item Three-phase 200V class S pecifications WJ200 inverters, 200V model s 001LF 002LF 004LF 007LF 015LF 022LF V T 0.2 0.4 0.75 1.1 2.2 3.0 kW C T 0.1 0.2 0.4 0.75 1.5 2.2 VT 1/4 1/2 1 1.5 3 4 Applicable motor size HP CT 1/8 1/4 1/2 1 2 3 V T 0.
7 WJ200 Inverter S pecifications, continued… Item Three-phase 400V class S pecifications WJ200 inverters, 400V model s 004HF 007HF 015 HF 022HF 030HF 040HF V T 0.75 1.5 2. 2 3.0 4.0 5.5 kW C T 0.4 0.7 5 1. 5 2.2 3.0 4.0 V T 1 2 3 4 5 7.5 Applicable motor size HP C T 1/2 1 2 3 4 5 V T 1.
8 The following table shows which mode ls need derating. 1-ph 200V class Need derating 3-ph 200V class Need derating 3-ph 400V class Need derating WJ200-001S － W J200-001L － WJ200-004H WJ200-0.
9 Basic System Description A motor control system will obv iously include a motor and inverter , as well as a circuit breaker or fuses for safety . If you are connecting a motor to the inverter on a test bench just to get sta rted, that’s all you may need fo r now .
10 Determining Wire and Fuse Sizes The maximum motor currents in yo ur application determines the recomme nded wore size. The following t able gives the wire size in A WG .
11 Wire the Inverter Input to a Supply In this step, you will connect wiring to the i nput of the inverte r . First, you mu st determine whether the inverter model you have requi red three-phase power only , or single-phase power only . All models h ave the same power con nection terminals [R/L1], [S/L2], and [T/L3].
12 Three-phase 200V 3.7kW Three-phase 400V 4.0kW Three-phase 200V 5.5, 7.5kW Three-phase 400V 5.5, 7.5kW W/T3 V/T2 U/T1 T/L3 S/L2 R/L1 N/ - P/+ PD/+1 RB Power input Output to Motor Chassis Ground (M4).
13 Three-phase 200V 1 1kW Three-phase 400V 1 1, 15kW Three-phase 200V 15kW NOTE : An inverter powered by a port able power generator may receive a distorted power waveform, overheating the generator . In general , the generator capacity should be five times that of the inverter (kV A).
14 Using the Front Panel Keyp ad Please take a moment to familiarize yourself with the keyp ad layout shown in the figure below . The display is used in programming the in verter ’s paramete rs, as well as monitoring specific para meter values during operation.
15 Keys, Modes, and Parameters The purpose of the keypad is to provide a way to change modes and p arameters. The term function applies to both monitoring modes and p arameters. These are all accessi ble through function co des that are primary 4-character code s.
16 NOTE : Pressing the [ESC] key will make the display go to the top of next function group, regardless the display cont ents. (e.g. A021 [ESC] b001 ) U V Press the both up and down key at the same time in func. code or data display , then single-digit edit mode will be enabled.
17 [Setting example] After power ON, changing from 0 . 00 display to change the A002 (Run command sour ce) data. Function code d xxx are for monitor and not possible to change. Function codes F xxx other than F004 are reflected on the performanc e just after changing the data (before pressing SET key), and there will be no blinking.
18 When a function c ode is sho wn… When a data is shown… ESC key Move on to the next function g roup Cancels the chang e and moves back to the function code SET key Move on to the data display F .
19 Connecting to PLCs and Other Devices Hitachi i nverters (drives) are useful in many types of applications. During in stallation, the inverter keypad (or other progra mming device) will facilit ate the initial configuration.
20 Example Wiring Diagram The schematic diagram b elow provides a gene ral example of logic connect or wiring, in addition to basic po wer and motor wiring converte d in Chapter 2. The g oal of this chapter is to help you determine th e proper connections for t he various terminals shown below for your application needs.
21 Control Logic Signal S pecifications The control logic connect ors are located just behind the front housi ng cover . The relay contact s are just to the lef t of the logic connectors. Connector labeling is shown belo w . T erminal Name Description Ratings P24 +24V for logic inputs 24VDC, 100mA.
22 T erminal Name Description Ratings O Analog voltage input 0 to 9.8 VDC range, 10 VDC nominal, input impedance 10 k Ω H +10V analog reference 10VDC nominal, 10mA max. SP , SN Serial communication terminal F or RS485 Modbus communication. AL0, AL1, AL2 *3 Relay common c ontact 250V AC, 2.
23 Sink/source logic of in telligent input terminals Sink or source logic is switched by a jumper wire as below . Wire size for control and relay terminals Use wires within the specifi cations listed below. For safe wiring and relia bility, it is recommended to use ferrules, but if solid or stranded wire is used, stripping length should be 8mm.
24 Recommended ferrule For safe wiring and reliability, it is recomm ended to use following ferrules. Wire size mm 2 (A WG) Model name of ferrule * L [mm] Φ d [mm] Φ D [mm] 0.25 (24) AI 0.25-8YE 12.5 0.8 2.0 0.34 (22) AI 0.34-8TQ 12.5 0.8 2.0 0.5 (20) AI 0.
25 Intelligent T erminal Listing Intelligent Input s Use the following ta ble to locate pages for intellig ent input material in this chapter . Input Function Summa ry T able Symbol Code Function Name.
26 Use the following ta ble to locate pages for intellig ent input material in this chapter . Input Function Summa ry T able Symbol Code Function Name Page DISP 86 Display limitation NO 255 No assig n Intelligent Output s Use the following table to locate pages for in telligent output material in this chapter .
27 Using Intelligent Input T erminals T erminals [1], [2], [3], [4], [5], [6] and [7] are identical, programmable inputs for general use. The input circuits can use t he inverter ’s internal (isolated) +24V field supply or an external power supply .
28 The two diagrams below input wiring circuit s using the inverter ’s internal +24V supply . Each diagram shows th e connection for simple switches, or for a field device with transistor outputs. Note th at in the lower diagram, it is necessary to connect terminal [L] only when using the field device with transi stor s.
29 The two diagrams below show input wiring circuits using an external supply. If using the “Sinking Inputs, External Supply” in below wi ring di agram, be sure to remove the jumper wire, and use a diode (*) with th e external suppl y.
30 CAUTION: Be sure to diod e in between "P24" and "PLC" when connecting plu ral inverters with digital input wiri ng in common. The power to the inverter control p art can be supplied externally as sho wn below .
31 Forward Run/Stop and Reverse Run/Stop Commands: When you input the Run command via the terminal [FW], the inverter executes the Forward Run command (high ) or Stop command (low ). When you input the Run comm and via the terminal [R V], the inverte r execute s the Revers e Run comma nd (high) or Stop command (low).
32 Multi-Speed Select ~Binary Operation The inverter can store up to 16 different target frequencies (speeds) th at the motor output uses for steady-state run condition. These speed s are accessible through programming four of the intelligent terminals as binary-encoded inputs CF1 to CF4 per the table to the right.
33 Two Stage Accelerati on and Deceleration When terminal [2CH] is turned ON, the inverter changes the rate of acceleratio n and deceleration from the initial settings ( F002 and F003 ) to use the second set of ac celeration/ deceleration values.
34 Unattended Start Protection If the Run command is already set when power is turned ON, the inverter starts run ning immediately after powerup. The Unattended Start Pro tection (USP) function prevents that automatic startup, so that the inverter will not run without outside intervention.
35 Reset Inverter The [RS] terminal causes the inverter to execute the reset operation. If the inverter i s in Trip Mode, the reset cancels the Trip state. Whe n the signal [RS] is turned ON and OFF, the inverter exe cutes the reset operation. The minimum pul se width for [RS] must be 12 ms or greater.
36 Using Intelligent Output T erminals Run Signal When the [RUN] signal is selected a s an intelligent output terminal, the inverter outputs a signal on that terminal when it is in Run Mode. The output logic is active low, and is the open collector type (switch to grou nd).
37 Frequency Arrival Signals The Frequency Arrival group of outputs helps coordi nate ex ternal systems with the current velocity profile of the inverter. As the name implies, output [FA1] turn s ON when the output frequency a rrives at the standard set frequency (paramet er F001).
38 Frequency arrival output [FA1] uses th e standard output frequency (paramete r F001) as the threshol d for switching. In the figure to the right, Frequency Arrival [FA1] turns ON when the output fr.
39 Alarm Signal The inverter alarm signal is active when a fault has occurred and it is in the Trip Mode (refer to the diagram at right). When the fault is cleared the ala rm signal becomes inactive. We must make a distincti on between the alarm signal AL and the alarm relay contacts [AL0], [AL1] and [AL2].
40 The alarm relay output can be configured in two main ways: • Trip/Power Loss Alarm – The alarm relay is configu red as normally closed ( C036 = 01 ) by default, shown below (l eft). An external al arm circuit that detects bro ken wiring also as an alarm connects to [AL0] and [AL1] .
41 Analog Input Operation The WJ200 inverters provide for analog input to command the inverter frequency output value . The analog input terminal group includ es the [L], [OI], [O], and [H] terminals on the control connector, which provide for Volta ge [O] or Current [OI] input.
42 The following table shows the availabl e analog input settings. Parameter A005 and the input terminal [AT] determine the External Frequency Comm and input terminals that are available, and how they function. The analog in puts [O] and [OI] use terminal [L] as the reference (signal return).
43 Pulse T rain Input Operation The WJ200 inverter is cap able of accepting pulse train input signals, that are u sed for frequency command, proc ess variable (feedback ) for PID control, and simple positioning. The dedicated terminal is called “EA” and “EB”.
44 Analog Output Operation In inverter applications it is useful to monitor the inverter operation from a remote location or f rom the front panel of an inverter enclosure.
45 The [AM] signal offset and gain are adjustable, as indicated belo w. Func. Description Range Default C106 [AM] output gain 0.~255. 100. C109 [AM] output offs et 0.0~10.0 0.0 The graph below shows the effect of the gai n and offset setting. To calibrate the [AM] output for your application (analog meter), follow the steps below: 1.
46 Monitoring functions NOTE :. Mark “ ” in b031=10 shows the accessible parameters wh en b031 is set “10”, high level access. * Please change from" 04 (Basi c display)" to " 00 (Full display)" in parameter B037 (Function code di splay restriction), in case some para meters cannot be displayed.
47 “d” Function Func. Code Name Description Run Mode Edit Units D006 Intellig ent output terminal status Displays the state of the intelligent output terminals: − − D007 Scale d output frequenc y monitor Displays the output frequency scaled by the constant in B086 .
48 “d” Function Func. Code Name Description Run Mode Edit Units d029 Positio ning command monitor Displa ys the positioning command, range is –268435455~ +268435455 − − d030 Current position.
49 Main Profile Parameters NOTE :. Mark “ ” in b031=10 shows the accessible parameters wh en b031 is set “10”, high level access. “F” Function Defaults Func. Code Name Description Run Mode Edit Initial data Units F001 Output frequenc y setting S tandard default ta rget frequency that determines constant motor speed, range is 0.
50 St andard Functions NOTE :. Mark “ ” in b031=10 shows the accessible parameters wh en b031 is set “10”, high level access. “A” Function Defaults Func. Code Name Description Run Mode Edit Initial data Units A001 Freque ncy source U 02 − A201 Freque ncy source, 2 nd motor Eight options; select codes: 00 … POT on ext.
51 “A” Function Defaults Func. Code Name Description Run Mode Edit Initial data Units A015 [O] input start frequency enable T wo options; select codes: 00 … Use offset ( A011 value) 01 … Use 0Hz U 01 − A016 Anal og input filter Range n = 1 to 31, 1 to 30 : × 2ms filter 31: 500ms fixed filter with ± 0.
52 “A” Function Defaults Func. Code Name Description Run Mode Edit Initial data Units A242 Manu al torque boost value, 2 nd motor normal V/f curve, range is 0.
53 “A” Function Defaults Func. Code Name Description Run Mode Edit Initial data Units a058 DC braki ng time at start Sets the duration for DC braking, range is from 0.0 to 60.0 seconds U 0.0 sec. a059 Carrier freq uency during DC braking Carrier frequency of DC braking performance, range is from 2.
54 “A” Function Defaults Func. Code Name Description Run Mode Edit Initial data Units A072 PID proporti onal gain Proportional gain has a range of 0.00 to 25.00 1.0 − A073 PID integra l time constant In tegral time const ant has a range of 0.
55 “A” Function Defaults Func. Code Name Description Run Mode Edit Initial data Units A092 Acceleration time (2) 10.00 sec A292 Acceleration time (2), 2 nd motor Duration of 2 nd segment of acceleration, range is: 0.01 to 3600 sec. 10.00 sec A093 Decel eration time (2) 10.
56 “A” Function Defaults Func. Code Name Description Run Mode Edit Initial data Units a131 Acceleration curve constant Range is 01 to 10. U 02 − a132 Decel eration curve constant Range is 01 to 10.
57 “A” Function Defaults Func. Code Name Description Run Mode Edit Initial data Units a156 PID sleep funct ion action threshold Sets the threshold for the action, set range 0.0~400.0 Hz U 0.00 Hz a157 PID sleep funct ion action delay time Sets the delay time for the action, set range 0.
58 Fine T uning Functions “b” Function Defaults Func. Code Name Description Run Mode Edit Initial data Unit s B001 Restart mode on power failure / under-voltage trip Select inverter restart method.
59 “b” Function Defaults Func. Code Name Description Run Mode Edit Initial data Unit s B012 Level of electronic thermal U A B212 Level of electronic thermal, 2 nd motor Set a level between 20% and 100% for the rated inverter current.
60 “b” Function Defaults Func. Code Name Description Run Mode Edit Initial data Unit s b025 Overloa d restriction level 2 Sets t he level of overload restriction, between 20% and 200% of the rated current of the inverter , setting resolution is 1% of rated current U Rated current x 1.
61 “b” Function Defaults Func. Code Name Description Run Mode Edit Initial data Unit s b037 F unction code display restriction Six option co des: 00 … Full display 01 … Function-specific displ.
62 “b” Function Defaults Func. Code Name Description Run Mode Edit Initial data Unit s B060 Maximum-lim it level of window comparator (O) Set range, {Min.-limit level ( b061 ) + hysteresis width ( b062 )x2} to 100 % (Minimum of 0%) U 100. % B061 Minimum-limit l evel of window comparator (O) Set range, 0 to {Max.
63 “b” Function Defaults Func. Code Name Description Run Mode Edit Initial data Unit s B087 STOP key enable Select whether the STOP key on the keypad is enabled, three option codes: 00 … Enabled.
64 “b” Function Defaults Func. Code Name Description Run Mode Edit Initial data Unit s b096 BRD activatio n level Range is: 330 to 380V (200V class) 660 to 760V (400V class) U 360/ 720 V b097 BRD resistor v alue Min.Resistance to 600.0 U Min. Resistanc e Oh m B100 F ree V/F setting, freq.
65 “b” Function Defaults Func. Code Name Description Run Mode Edit Initial data Unit s B133 Decel. ov ervolt. suppress proportional gain Proportional gain when b130=01. Range is: 0.00 to 5.00 0.20 − B134 Decel. ov ervolt. suppress integral time Integration time when b130=01.
66 Intelligent T erminal Functions “C” Function Defaults Func. Code Nam e Descr iption Run Mode Edit Initial data Unit s C001 Input [1] function Select input terminal [1] functi on, 68 options (se.
67 “C” Function Defaults Func. Code Nam e Descr iption Run Mode Edit Initial data Unit s C028 [AM] terminal selection (Analog voltage output 0...10V) 1 1 programmable functions: 00 … Output freq.
68 “C” Function Defaults Func. Code Nam e Descr iption Run Mode Edit Initial data Unit s C047 Pulse trai n input/output scale conversion If EO terminal is configured as pulse train input (C027=15), scale conversion is set in C047. Pulse-out = Pulse-in × (C047) Set range is 0.
69 “C” Function Defaults Func. Code Nam e Descr iption Run Mode Edit Initial data Unit s C076 Communication error select Selects inverter response to communications error .
70 “C” Function Defaults Func. Code Nam e Descr iption Run Mode Edit Initial data Unit s C102 Reset sel ection Determines respons e to Reset input [RS].
71 “C” Function Defaults Func. Code Nam e Descr iption Run Mode Edit Initial data Unit s C147 Logic output 2 operator Applies a logic function to calculate [LOG] output state, Three options: 00 .
72 Input Function Summa ry T able Option Code T erminal Symbol Function Name Description ON Frequenc y output uses 2nd-stage acceleration and deceleration values 09 2CH 2-stage Acceleration and Decele.
73 Input Function Summa ry T able Option Code T erminal Symbol Function Name Description ON Clears the UP/DWN frequenc y memory by forcing it to equal the set frequency parameter F001.
74 Input Function Summa ry T able Option Code T erminal Symbol Function Name Description ON General purpose inp ut (3) is made ON under EzSQ 58 MI3 General purpose input (3) OFF General purpose input .
75 Output Function Summary T able – This table shows all functio ns for the logical output s (terminals [1 1], [12] and [AL]) at a glan ce. Detailed descri ptions of these functions, related parameters a nd settings, and example wiring diagrams a re in “Using Intelligent Output T erminals” on page 36.
76 Output Function Summary T able Option Code T erminal Symbol Function Name Description ON Output frequency falls below the threshold specified in C063 21 ZS Zero Hz S peed Detection Signal OFF Output frequency is higher than the threshold specified in C063 ON Deviation of speed command and actual speed exceeds the specified valu e P027 .
77 Output Function Summary T able Option Code T erminal Symbol Function Name Description ON Lifetime of cooling fan has expired. 40 W AF Cool ing Fan Warning Signal OFF Lifetime of cooling fan has not expire d.
78 Motor Const ant s Functions “H” Function Defaults Func. Code Name De scription Run Mode Edit Initial dat a Units H001 Auto-tuning selection Three option codes: 00 … Disabled 01 … Enabled wi.
79 “H” Function Defaults Func. Code Name De scription Run Mode Edit Initial dat a Units H231 Motor constant R2, 2 nd motor (Auto tuned d ata) U ohm H032 Motor constant L (Auto tuned dat a) U mH H232 Motor constant L, 2 nd motor (Auto tuned d ata) 0.
80 “H” Function Defaults Func. Code Name De scription Run Mode Edit Initial dat a Units H112 PM const Ld(d-a xis inductance, Auto) 0.01-655.35 [mH] U kW dependent mH H113 PM const Lq(q-a xis inductance, Auto) 0.01-655.35 [mH] U kW dependent mH H116 PM Speed Response 1-1000 [%] U 100 % H117 PM St arting Current 20.
81 Exp ansion Card Functions “P” parameters will be ap peared when the expansion option is connected. “P” Function Defaults Func. Code Name Description Run Mode Edit Initial d ata Units P001 R.
82 “P” Function Defaults Func. Code Name Description Run Mode Edit Initial d ata Units p041 S peed / T orque control swi tching ti me Set range is 0 to 1000 ms U 0. ms P044 Commun ication watchdog timer (for option) Set range is 0.00 to 99.99s U 1.
83 “P” Function Defaults Func. Code Name Description Run Mode Edit Initial d ata Units P072 Positio n range (Forward) 0 to +268435455(Higher 4-dig its displayed) +2684354 55 Pulse s P073 Posit.
84 Monitoring T rip Event s, History , & Conditions T rip History and Inverter St atus We re commend that you first find the ca use of t he fault before cl earing it. When a fault occurs, the inverter stores import ant perfor mance dat a at the moment of the fault.
85 Error Codes An error code will appear on the display automati cally when a fault causes the inverter to trip. The following table lists the cause a ssociated with the error.
86 Error Code Name Cau se(s) E25 Main circuit error (*3) The inverter will trip if the power supply establishment is not recognized because of a malfunction du e to noise or damage to the main circuit element. E30 Driver error An internal inverter error has occurred at the safety protection circuit between the CPU and main driver un it.
87 Error Code Name Cau se(s) E81 Excessive speed If the motor speed rises to "maximum frequency (A004) x over-speed error det ection level (P026)" or more, the inverter will shut off its output and display the error code shown on the right.
88 CE-EMC Inst allation Guidelines You are required to satisfy the EMC directive (2 004/1 08/EC) when using an WJ200 inverter in an EU country. To satisfy the EMC directive and to comply with standard, you ne ed to use a dedicated EMC filter suitable for each model, and follow the guidelines in this section.
89 • Ensure that the connections are metallic and have the larg est possible contact areas (zinc-plated mountin g plates). 4. Avoid conductor loops that act like antennas , especially loops that e ncompass large areas. • Avoid unnecessary conductor loops.
90 protective conductor con nection. The filter must be solidly and permanently connected with the ground potential so as to preclude the danger of electric shock upon touching the filter if a fault occurs. To achieve a protective ground connection for the filter: • Ground the filter with a conductor of at least 10 mm 2 cross-se ctional area.
91 Inst allation for WJ200 seri es (example of SF models) Model LFx (3-ph. 200V class) and HFx (3-ph. 400V cl ass) are the same concept for the installation. *) Both earth portions of the shielded cable must be connected to the earth point by cable clamps.
92 Hit achi EMC Recommendations WA R N I N G : This equipment should be installed, adjusted, and serviced by qualified personal familiar with constructio n and operation of the equipment and th e hazards involved. Failure to observe this prec aut ion could result in bodily injury.
93 Functional Safety (Certification in Progress) Introduction The Gate Suppress function can be utilized to perform a safe sto p according to the EN60204-1, stop category 0 (Uncontroll ed stop by power removal).
94 (When safety switch or EDM switch is turned off, the intelligent input and output terminal assigned on will be set as "no" function, and contact will rem ain normally off.) Always use both inputs to disable the dr ive. If for any reason only one channel is opened, the drive output is stopped but the EDM output is not activated.
95 Wiring example When the Gate Suppress function is utili zed, connect the drive to a safety certified interrupting device utilizing EDM output sign al to reconfirm both safety inputs GS 1 and GS2. By pressing the emergency stop button, the current to GS1 and GS2 is sh ut off, and the inverter output is shut off.
96 Inverter doesn’t block the current flowi ng into itself when it is not powe red. This may cause the closed circuit when two or more invert ers are connected to common I/O wiring as shown below to result in unexpected tu rning the on the input. This may lead to dangerous situation.
97 Component s to be combined Followings are the example of the safety devices to be combined. Series Model Norms to comply Certification date GS9A 301 ISO13849-2 cat4, SIL3 06.06.2007 G9SX GS226-T15-RC IEC61508 SIL1-3 04.1 1.2004 NE1A SCPU01-V1 IEC61508 SIL3 27.
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Se non hai ancora comprato il Hitachi hitachi series inverter è un buon momento per familiarizzare con i dati di base del prodotto. Prime consultare le pagine iniziali del manuale d’uso, che si trova al di sopra. Dovresti trovare lì i dati tecnici più importanti del Hitachi hitachi series inverter - in questo modo è possibile verificare se l’apparecchio soddisfa le tue esigenze. Esplorando le pagine segenti del manuali d’uso Hitachi hitachi series inverter imparerai tutte le caratteristiche del prodotto e le informazioni sul suo funzionamento. Le informazioni sul Hitachi hitachi series inverter ti aiuteranno sicuramente a prendere una decisione relativa all’acquisto.
In una situazione in cui hai già il Hitachi hitachi series inverter, ma non hai ancora letto il manuale d’uso, dovresti farlo per le ragioni sopra descritte. Saprai quindi se hai correttamente usato le funzioni disponibili, e se hai commesso errori che possono ridurre la durata di vita del Hitachi hitachi series inverter.
Tuttavia, uno dei ruoli più importanti per l’utente svolti dal manuale d’uso è quello di aiutare a risolvere i problemi con il Hitachi hitachi series inverter. Quasi sempre, ci troverai Troubleshooting, cioè i guasti più frequenti e malfunzionamenti del dispositivo Hitachi hitachi series inverter insieme con le istruzioni su come risolverli. Anche se non si riesci a risolvere il problema, il manuale d’uso ti mostrerà il percorso di ulteriori procedimenti – il contatto con il centro servizio clienti o il servizio più vicino.
