Omron L7Z Quick Start Manual
  1. Manuals
  2. Brands
  3. Omron Manuals
  4. Inverter
  5. L7Z -
  6. Quick start manual
Omron L7Z Quick Start Manual

Omron L7Z Quick Start Manual

Hide thumbs
Table of Contents

Advertisement

Quick Links

Download this manual
Cat.No. I62E-EN-01
L7Z
Quick Start Guide

Advertisement

Table of Contents
loading

Related Manuals for Omron L7Z

Summary of Contents for Omron L7Z

  • Page 1 Cat.No. I62E-EN-01 Quick Start Guide...

  • Page 3: Table Of Contents

    Autotuning Procedure for PM Motors ............... 17 PM Motor Encoder Offset Tuning ..............18 Ride Profile and Sequence Setup........19 Up and Down Commands and Speed Reference Selection ......19 Speed Selection Sequence Using Digital Inputs ..........19 Acceleration / Deceleration / Jerk Settings ............22 Brake Sequence ....................

  • Page 4: Warnings

    Cables must not be connected or disconnected, nor signal tests carried out, while the power is switched on. The Varispeed L7 DC bus capacitor remains charged even after the power has been switched off. To avoid an electric shock hazard, disconnect the frequency inverter from the mains before carrying out maintenance.

  • Page 5: Safety Precautions And Instructions

    The DC bus capacitors can remain live for about 5 minutes after the inverter is disconnected from the power. It is therefore necessary to wait for this time before opening its covers. All of the main circuit terminals may still carry dangerous voltages.

  • Page 6: Emc Compatibility

    During wiring, maintenance or inspection make sure, that the motor is stopped and can not turn. • If the inverter is turned off and the motor must be turned, make sure that motor and inverter output are • electrically disconnected.
  • Page 7 Use a power cable with well-grounded shield. Use a shielded motor cable not exceeding 20 meters in length. Arrange all grounds so as to maximize the area of the end of the lead in contact with the ground terminal (e.g.

  • Page 8: Installation

    Make sure that the ambient temperature is not exceeded • Install the Inverter in a clean location which is free from oil mist and dust. It can be installed in a totally • enclosed panel that is completely shielded from floating dust.

  • Page 9: Electrical Connection

    • that the circuit breaker is suitable for the Inverter. If an earth leakage breaker is used, it should be able to detect all kinds of current should be used in order to • ensure a safe earth leakage current detection A magnetic contactor or other switching device can be used at the inverter input.
  • Page 10 W/T3, 2, and 3, PO, NO) and other high-power lines. Separate wiring for control circuit terminals MA, MB, MC, M1, M2, M3, M4, M5, and M6 (contact out- • puts) from wiring to other control circuit terminals. If an optional external power supply is used, it should be a UL Listed Class 2 power supply.
  • Page 11 Fault when OPEN across MB and MC *1. Do not use this power supply for supplying any external equipment. *2. When driving a reactive load, such as a relay coil with DC power supply, always insert a flywheel diode as shown in Flywheel diode...
  • Page 12 Table 3 Sinking/Sourcing Mode and Input Signals Internal Power Supply – Sinking Mode (NPN) External Power Supply – Sinking Mode (NPN) IP24V IP24V (+24V) (+24V) 24 VDC Internal Power Supply – Sourcing Mode (PNP) External Power Supply – Sourcing Mode (PNP)
  • Page 13 2. The CN5 factory setting is NPN Shielded Twisted-pair 3. To enable the inverter both inputs, BB and BB1 must be closed. If wires wires only one of the inputs is closed, “BB” will be displayed in the operator panel and the inverter will not start.

  • Page 14: Keypad Operation

    Stops Inverter operation. STOP Key This key can be enabled or disabled using parameter o2-02 when operating from a source different than the operator. Note: Except in diagrams, Keys are referred to the key names listed in the above table. EN-11...

  • Page 15: Power Up And Basic Parameter Setup

    Check the encoder power supply selection * (Closed Loop only) Switch on the power supply Select the control mode in parameter A1-02 Perform motor data / encoder offset auto tuning * V/f control page 16, Autotuning Procedure with Induction Motors * Open Loop Vector Control...

  • Page 16: Before Power Up

    Check if the power supply cables are tightly connected to the right terminals (L1, L2, L3). • Check if the motor cables are tightly connected to the right terminals on the inverter side (U, V, W) as well • as on the motor side.

  • Page 17: Autotuning

    This tuning mode is available in Closed Loop Vector control for PM motors only. It automatically sets the off- set between the magnetic pole and the encoder zero position. It can be used to retune the offset after an encoder change without changing the motor data settings.

  • Page 18: Autotuning Alarms And Faults

    1. The load should be disconnected which means, that the ropes have to be removed and the brake must be open. 2. If the load can’t be removed, the tuning can be done with a balanced car. The tuning result accuracy will be lower which can result in a performance loss.

  • Page 19: Autotuning Procedure With Induction Motors

    Autotuning Procedure with Induction Motors Fig 6 shows the autotuning procedure for an induction motor with or without encoder in V/f-, Open loop vec- tor and Closed loop vector control. START Set the Base Block Inputs BB and (A1-02 = 2/3)

  • Page 20: Autotuning Procedure For Pm Motors

    Autotuning Procedure for PM Motors Fig 7 shows the autotuning procedure for permanent magnet motors. Before tuning make sure that the control mode is set to PM Closed Loop Vector (A1-02 = 6). START * Remove the ropes so that the motor can rotate freely...

  • Page 21: Pm Motor Encoder Offset Tuning

    The procedure should be performed if the encoder has been changed or has not been aligned correctly. Before tuning make sure that PM losed loop vec- tor control is selected (A1-02 = 6) and that the E1- and E5- parameters are set up correctly.

  • Page 22: Ride Profile And Sequence Setup

    Up and Down Commands and Speed Reference Selection Up / Down Command Source Selection The input source for the Up and Down signal can be selected in parameter b1-02. The factory setting is Up/ Down command by the terminals S1/S2 (b1-02 = 1).
  • Page 23 (d1-17) when the selected speed signal is removed. Inspection Speed can not be selected as travel speed. The higher speed has priority over the leveling speed, i.e. as long as a higher speed is selected, the leveling signal is disregarded (see the fig. below) The inverter stops when the leveling signal or the Up/Down signal is removed.
  • Page 24 K80)) If d1-18 is set to “2” and no digital input is set to nominal speed selection, the speed reference with speed selection input set is nominal speed (d1-09). When the leveling speed signal is set, the inverter starts to decel- erate to the leveling speed.

  • Page 25: Acceleration / Deceleration / Jerk Settings

    Acceleration / Deceleration / Jerk Settings The acceleration time indicates the time to increase the speed from 0% to 100% of the maximum speed set in E1-04. The deceleration time indicates the time to decrease the speed from 100% to 0% of E1-04.
  • Page 26 5. When the motor has stopped, apply a DOWN command. The inverter will accelerate the motor in the opposite direction to the nominal speed. Release the DOWN command a few seconds after the nominal speed has been reached. To abort the tuning set parameter n5-05 to “0”.

  • Page 27: Troubleshooting

    Faults and Alarms are functions that indicate unusual inverter / application conditions. An alarm does not necessarily switch of the inverter but a message is displayed on the keypad and an alarm output is generated at the multi-function outputs (H2-01 to H2-03) if programmed. An alarm automatically disappears if the alarm condition is not present anymore.
  • Page 28 • Check the setting of Motor Rated Current Setting (E2-01). F1-03 = 0, 1 or 2 and A1-02 is set to 3 or 6. The motor speed feedback (U1-05) exceeded the F1- • Adjust the ASR settings in the C5 parameter group.

  • Page 29: Operator Programming Errors (Ope)

    The Inverter does not operate until the parameter set- ting is set correctly; however, no other alarm or fault outputs will occur. If an OPE occurs, change the related parameter by checking the cause shown in the table below. When an OPE error is displayed, press the ENTER key to see U1-34 (OPE Detected).

  • Page 30: Auto-Tuning Faults

    Auto-tuning Faults Auto-tuning faults are shown below. When the following faults are detected, the fault is displayed on the dig- ital operator and the motor coasts to stop. No fault or alarm outputs will be operated. Display Meaning Corrective Actions Acceleration error (detected during rotating autotuning •...

  • Page 31: Parameter Table

    (ASR) for the minimum frequency. ASR integral (I) C5-04 The setting is active only for acceleration. time 2 C5-06 ASR delay time Sets the ASR output delay time. Sets the frequency for switching between ASR switching C5-07 Proportion Gain 1, 2,3 and Integral Time frequency 1, 2, 3.
  • Page 32 It can be used to improve the Digital I/O Settings mode leveling accuracy. Terminal S3 to H1-01 Special Functions Setup Refer to the end of this list for a list of S7 function selections Enables or disables the short floor opera- H1-05 selection Short-floor...
  • Page 33 Inspection Run Selection (d1-14) 1: Minor fault Digital Output Function Selections 1: Major fault During run 1 (ON: run command is ON or voltage is being U1-13 Cumulative operation time output) U1-20 Frequency reference after soft-starter Inverter operation ready; READY: After initialization or no...
  • Page 34 EN-31...

Table of Contents