INSTALLATION GUIDELINE FR-A770-355K, 550K-79 Thank you for choosing this Mitsubishi Electric Inverter. Please read through this Installation Manual and the Instruction Manual to operate this inverter correctly Do not use this product until you have a full knowledge of the equipment, the safety information and the instructions.
First edition For Maximum Safety Mitsubishi Electric transistorised inverters are not designed or manufactured to be used in equipment or systems in situations that can affect or endanger human life. When considering this product for operation in special applications such as machinery or systems used in passenger transportation, medical, aerospace, atomic power, electric power, or submarine repeating applications, please contact your nearest Mitsubishi Electric sales representative.
A person who took a proper engineering training. Please note if you can take a proper engineering training at your local Mitsubishi Electric office. Such training may be available at your local Mitsubishi Electric office. Contact your local sales office for schedules and locations.
Temperature applicable for a short time, e.g. in transit. If halogen-based materials (fluorine, chlorine, bromine, iodine, etc.) infiltrate into a Mitsubishi Electric product, the product will be damaged. Halogen-based materials are often included in fumigant, which is used to sterilize or disinfect wooden packages. When packaging, prevent residual fumigant components from being infiltrated into Mitsubishi Electric products, or use an alternative sterilization or disinfection method (heat disinfection, etc.) for packaging.
Emergency stop CAUTION Provide a safety backup such as an emergency brake which will prevent the machine and equipment from hazardous conditions if the inverter fails. When the breaker on the inverter primary side trips, check for the wiring fault (short circuit), damage to internal parts of the inverter, etc.
1 INSTALLATION OF THE INVERTER AND INSTRUCTIONS Unpack the inverter and check the capacity plate on the front cover and the rating plate on the inverter side face to ensure that the product agrees with your order and the inverter is intact. 1.1 Inverter Model 355K - 79...
INSTALLATION OF THE INVERTER AND INSTRUCTIONS 1.4 General Precaution The bus capacitor discharge time is 10 minutes. Before starting wiring or inspection, switch power off, wait for more than 10 minutes, and check for residual voltage between terminal P/+ and N/ with a meter etc., to avoid a hazard of electrical shock.
3 WIRING 3.1 Terminal connection diagram Source logic Main circuit terminal *1 DC reactor (FR-HEL) Control circuit terminal Be sure to connect the DC reactor supplied. N/– MCCB R/L1 Inrush 3-phase AC current S/L2 Motor limit power supply T/L3 circuit Earth (Ground) Jumper...
WIRING CAUTION To prevent a malfunction due to noise, keep the signal cables more than 10cm away from the power cables. Also separate the main circuit wire of the input side and the output side. After wiring, wire offcuts must not be left in the inverter. Wire offcuts can cause an alarm, failure or malfunction. Always keep the inverter clean.
WIRING 3.2.3 Applied cable size Select the recommended cable size to ensure that a voltage drop will be 2% max. If the wiring distance is long between the inverter and motor, a main circuit cable voltage drop will cause the motor torque to decrease especially at the output of a low frequency.
WIRING 3.3 Control circuit terminals 3.3.1 Control circuit specifications indicates that terminal functions can be selected using Pr. 178 to Pr. 196 (I/O terminal function selection). Input signals Terminal Terminal Name Description Rated Specifications Symbol Forward rotation Turn ON the STF signal to start forward When the STF and STR start rotation and turn it OFF to stop.
WIRING Terminal Terminal Name Description Rated Specifications Symbol 10VDC±0.4V Permissible load current When connecting the frequency setting potentiometer at an initial 10mA Frequency setting status, connect it to terminal 10. power supply Change the input specifications of terminal 2 when connecting it to 5.2VDC±0.2V terminal 10E.
WIRING Communication Terminal Terminal Name Description Symbol With the PU connector, communication can be made through RS-485. (for connection on a 1:1 basis only) Conforming standard: EIA-485 (RS-485) — PU connector Transmission format: Multidrop Communication speed: 4800 to 38400bps Overall length: 500m TXD+ Inverter transmission...
WIRING 3.3.2 Wiring of control circuit Terminal layout Control circuit terminal * Terminal screw size: M3.5 C2 10E 10 Tightening torque: 1.2N·m * Refer to instruction manuals of options for the available control terminals STOP other than the standard control circuit terminal.
4 PRECAUTIONS FOR USE OF THE INVERTER The FR-A700 series is a highly reliable product, but incorrect peripheral circuit making or operation/handling method may shorten the product life or damage the product. Before starting operation, always recheck the following items. Use crimping terminals with insulation sleeve to wire the power supply and motor.
PRECAUTIONS FOR USE OF THE INVERTER A motor with encoder is necessary for vector control. In addition, connect the encoder directly to the backlash-free motor shaft. (An encoder is not necessary for real sensorless vector control.) Inverter input side magnetic contactor (MC) On the inverter input side, connect a MC for the following purposes.
When a fault occurs, the inverter trips to output a fault signal. However, a fault output signal may not be output at an inverter fault occurrence when the detection circuit or output circuit fails, etc. Although Mitsubishi Electric assures best...
6 PARAMETER 6.1 Parameter list For simple variable-speed operation of the inverter, the initial setting of the parameters may be used as they are. Set the necessary parameters to meet the load and operational specifications. Parameter setting, change and check can be made from the operation panel (FR-DU07).
PARAMETER Parameter Name Setting Range Initial Value Parameter Name Setting Range Initial Value V/F1 (first 0 to 400Hz, Restart cushion time 0 to 60s 9999 frequency) 9999 Remote function 0, 1, 2, 3 V/F1 (first selection frequency 0 to 1000V Energy saving control voltage) 0, 4...
PARAMETER Parameter Name Setting Range Initial Value Parameter Name Setting Range Initial Value PID control auto- Stall prevention 0 to 400Hz, 0 to 31, 100, 101 matic switcho- 9999 operation selection 9999 ver frequency OL signal output timer 0 to 25s, 9999 10, 11, 20, 21, 1 to 3, 5 to 8, 10 PID action selec-...
PARAMETER Parameter Name Setting Range Initial Value Parameter Name Setting Range Initial Value CS terminal function Main circuit capacitor (0 to 100%) 100% selection life display MRS terminal function Main circuit capacitor 0 to 9, 12 to 20, 0, 1 selection life measuring 22 to 28, 42 to...
PARAMETER Parameter Name Setting Range Initial Value Parameter Name Setting Range Initial Value RS-485 commu- Encoder stop 0 to 31 0 to 5s 0.5s nication station check time (0 to 247) number RS-485 commu- 3, 6, 12, 24, 48, Orientation limit 0 to 60s, 9999 9999 nication speed...
PARAMETER Parameter Name Setting Range Initial Value Parameter Name Setting Range Initial Value Position feed for- Lower 4 digits 0 to 9999 0 to 100% ward gain Position com- mand accelera- Upper 4 digits 0 to 9999 0 to 50s tion/deceleration time constant Lower 4 digits...
PARAMETER Parameter Name Setting Range Initial Value Parameter Name Setting Range Initial Value Output interrup- Remote output data 2 0 to 4095 tion detection 0 to 3600s, 9999 PLC function flash time 0 to 9999 memory clear Output interrup- Maintenance timer 0 (1 to 9998) tion detection 0 to 400Hz...
PARAMETER Parameter Name Setting Range Initial Value Parameter Name Setting Range Initial Value Input phase loss Torque setting filter 1 0 to 5s, 9999 9999 protection 0, 1 Torque detection filter selection 0 to 0.1s Speed limit 0 to 120Hz 20Hz Model speed control 0 to 1000%...
PARAMETER Parameter Name Setting Range Initial Value Parameter Name Setting Range Initial Value Terminal 1 bias com- Terminal 2 frequency 0 to 400Hz mand (torque/mag- 0 to 400% setting bias frequency (902) (919) netic flux) Terminal 2 frequency Terminal 1 bias 0 to 300% (torque/magnetic flux) 0 to 300% setting bias...
7 FR-A770 DEDICATED SPECIFICATIONS The following section describes the details of parameters which are described differently or not described in the FR- A700 Instruction Manual (Applied) (IB-0600226ENG). 7.1 DU/PU monitor display data selection for the terminals CA and AM The full-scale value reference for the monitor output is 1200V. Pr.52 setting Pr.54 (CA) Full-scale...
FR-A770 DEDICATED SPECIFICATIONS 7.3 Multiple rating By setting “102” in Pr.570 Multiple rating setting, vector control can be performed. Parameter Initial Setting Name Description number value range Vector control cannot be performed. Writing is disabled during operation. Multiple rating setting Vector control can be performed.
FR-A770 DEDICATED SPECIFICATIONS 7.4 Operation by PLC function (Pr. 414 to Pr. 417, Pr. 498, Pr. 506 to Pr. 515) I/O data read, write, etc. can be performed by accessing the inverter in the predetermined method using special relays, special registers, etc. Operation, parameter read/write, etc.
FR-A770 DEDICATED SPECIFICATIONS 7.5 Reference of the terminal CA (analog current output) and AM (analog voltage output) (Pr. 55, Pr. 56, Pr. 866, Pr. 867, Pr. 869) Two types of monitor output, analog current output from the terminal CA and analog voltage output from the terminal AM, are available.
FR-A770 DEDICATED SPECIFICATIONS 7.5.3 Torque monitoring reference (Pr. 866) Set the full scale value when outputting the torque monitor from terminal CA or AM. For calibration of terminal CA, set the full-scale value of the connected torque meter when the output current of terminal CA is (10VDC) (20mADC) 20mA.
FR-A770 DEDICATED SPECIFICATIONS 7.6 Terminal CA, AM calibration (Calibration parameter C0 (Pr. 900), C1 (Pr. 901), C8 (Pr. 930) to C11 (Pr. 931)) By using the operation panel or parameter unit, you can calibrate terminal CA and terminal AM to full scale deflection.
FR-A770 DEDICATED SPECIFICATIONS 7.6.2 AM terminal calibration (C1 (Pr. 901)) Terminal AM is factory-set to provide a 10VDC output in the full- Inverter scale status of the corresponding monitor item. Calibration parameter C1 (Pr. 901) allows the output voltage ratios (gains) to be adjusted according to the meter scale.
FR-A770 DEDICATED SPECIFICATIONS 7.7 List of parameters different from FR-A700 Parameter Function name Item A770-79 A700 DU/PU main display data selection Setting range Without “9” With “9” CA terminal function selection Setting range Without “9” With “9” Retry waiting time Setting range 0 to 600s 0 to 10s...
✔ (931) current These instruction codes are used for parameter read and write by using Mitsubishi Electric inverter protocol with the RS-485 communication. Validity and invalidity according to operation mode are as follows: ✔ : Usable parameter — : Unusable parameter : Parameters available only during position control set by parameter “✔”...
8 TROUBLESHOOTING When an fault occurs in the inverter, the protective function is activated bringing the inverter to an alarm stop and the PU display automatically changes to any of the following fault (alarm) indications. If your fault does not correspond to any of the following faults or if you have any other problem, please contact your sales representative.
TROUBLESHOOTING 8.2 List of alarm display Operation Panel Indication Meaning Operation Panel Indication Meaning E - - - Faults history E.LF Output phase loss HOLD Operation panel lock E.OHT External thermal relay operation LOCD Password locked E.PTC* PTC thermistor operation E.OPT Option alarm Er1 to 4 Parameter write error...
CE marking. The authorized representative in the EU The authorized representative in the EU is shown below. Name: Mitsubishi Electric Europe B.V. Address: Gothaer Strasse 8, 40880 Ratingen, Germany Note We declare that this inverter conforms with the EMC Directive in industrial environments and affix the CE marking on the inverter.
APPENDIX A.1.2 Low Voltage Directive We have self-confirmed our inverters as products compliant to the Low Voltage Directive (Conforming standard EN 61800-5-1) and placed the CE mark on the inverters. Outline of instructions Do not use a residual current operated protective device (RCD) as an electric shock protector without connecting the equipment to the earth.
Phone: +371 (0)6 / 784 2280 Fax: +371 (0)6 / 784 2281 Mitsubishi Electric Europe B.V. / FA - European Business Group / Gothaer Straße 8 / D-40880 Ratingen / Germany / Tel.: +49(0)2102-4860 / Fax: +49(0)2102-4861120 / email@example.com / https://eu3a.mitsubishielectric.com...