CARLO GAVAZZI RVBS Manual
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CARLO GAVAZZI RVBS Manual

CARLO GAVAZZI RVBS Manual

Motor controllers ac variable frequency drives
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RVBS
Variable Frequency Drive
Rev 1.0

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Summary of Contents for CARLO GAVAZZI RVBS

  • Page 1 RVBS Variable Frequency Drive Rev 1.0...

  • Page 2: Table Of Contents

    Motor Controllers AC Variable Frequency Drives RVBS Index Introduction ......................................3 1.1 Foreword ....................................3 1.2 Scope ......................................3 1.3 Disclaimer ....................................3 1.4 Warning notice system ............................... 3 1.5 Qualified personnel ................................4 1.6 Basic safety requirements ..............................4 1.7 Disposal .....................................
  • Page 3 Motor Controllers AC Variable Frequency Drives RVBS 4.2.9 Commands ................................26 4.2.10 DC-brake function ............................30 4.2.11 Status variables ..............................31 4.3 External I/O ................................... 32 4.3.1 Input terminal function assignment ......................32 4.3.2 Output terminal function assignment ......................32 4.3.3...

  • Page 4: Introduction

    PLC Scope This document is intended to provide information on how to use the RVBS SW and to set-up and configure the RVBS Should there be any problems that cannot be solved with the information provided in this guide, contact your Carlo Gavazzi sales representative for further assistance.

  • Page 5: Qualified Personnel

    RVBS. Motor that are still rotating may produce dangerous voltages at the RVBS terminals even when it’s not connected to the power supply. Some parts of the RVBS may be hot. Coming in contact with such surfaces may cause burns. Disposal...

  • Page 6: Customer Requirements

    Motor Controllers AC Variable Frequency Drives RVBS Customer Requirements Commercial specifications Section Parameter RVBS120055F RVBS120075F Control mode V/F control Via Digital run/stop command input, analog input or Modbus Control method RTU for speed reference Frequency range 0 - 90 Hz...

  • Page 7: Functional Specifications

    Motor Controllers AC Variable Frequency Drives RVBS Functional specifications Section Parameter RVBS120055F RVBS120075F Digital inputs Digital input 1 Run/Stop Digital Inputs Digital input 2 Reset Topology 24V, NPN Digital outputs Digital Digital output Alarm relay Outputs Relay rating 2 Arms @ 230 VAC, Changeover...

  • Page 8: Keypad Operation

    Motor Controllers AC Variable Frequency Drives RVBS Keypad Operation Names and functions of Keypad components The Keypad allows you to run and stop the motor, display various data, configure function code data, monitor I/O signal states, maintenance information and alarm information.

  • Page 9: Alphanumeric Characters On The Led Monitor

    Motor Controllers AC Variable Frequency Drives RVBS Function/Data key which switches the operations you want to do in each mode as follows: ◼ In Running mode: Pressing this key switches the information to be displayed concerning the status of the inverter (output frequency (Hz), output current (A, output voltage (V), etc.)

  • Page 10: Software Functions

    RVBS Software Functions Communication The configuration and the programming of the RVBS drive, as well as the run/stop commands and the speed reference are managed via RS-485 serial connection with ModBus RTU protocol. 4.1.1 Network address The ModBus network address can be set from 1 to 255 Function Mod.

  • Page 11: Modbus Communication Error

    Motor Controllers AC Variable Frequency Drives RVBS To make a clear distinction between Modbus RTU function codes and the RVBS’s function codes, the former will be hereinafter referred to as ‘FC’. The ModBus exceptions supported are: Subcode Item Description Order of...

  • Page 12: Modbus Address Control

    Motor Controllers AC Variable Frequency Drives RVBS Transmission error The frame to the local station is found CRC error 71(47H) unmatched in CRC collation. Parity error The parity is unmatched. 72(48H) Receiving errors other than the Other errors abovementioned (framing error, overrun...
  • Page 13 Motor Controllers AC Variable Frequency Drives RVBS 1: Terminal command FWD or REV 2: RUN/STOP keys on 0x0002 Operation Method keypad (forward) 3: RUN/STOP keys on keypad (reverse) 0x0003 Maximum Frequency 1 25.0 to 120.0 0.1Hz 0x0004 Base Frequency 1 25.0 to 120.0...
  • Page 14 Motor Controllers AC Variable Frequency Drives RVBS speed (Disable during ACC/DEC) 2: Enable during ACC/constant speed operation 20 to 200 (The data is interpreted as the 0x001A Current Limiter (Level) rated output current of the inverter for 100%.) Electronic Thermal Overload Protection for 0.10...
  • Page 15 Motor Controllers AC Variable Frequency Drives RVBS Voltage Gain 0x60C Frequency at Minimum 0.0 to F03 (Maximum Analog Input Frequency 1) 0x60D Frequency at Maximum 0.0 to F03 (Maximum Analog Input Frequency 1) 0x60E Minimum Analog Input 0.0 to 100.0 0.1%...
  • Page 16 Motor Controllers AC Variable Frequency Drives RVBS 0.00: Follow deceleration time specified by F08/E09; Overload Prevention 0.01 to 100.0: 0.01H 0x030C 32767 Control deceleration time; z/sec. 999(by Keypad) or 32767(by Modbus): Disable Deceleration 0: Disable; 0x030D Characteristics 1: Enable 0: Disable;...
  • Page 17 Motor Controllers AC Variable Frequency Drives RVBS Frequency command Run command 0: F01 Communications Link 1: RS-485 0x031C Function (Mode selection) 2: F01 3: RS-485 RS-485 Indication of Startup Counter of Motor cumulative startup 0x031D count (0000 to FFFF in hex.)

  • Page 18: Motor Control

    Motor control Control mode of the inverter determines the way of itself to control the motor which operates door or compressor. RVBS adapts V/F control with two options to regulate speed of compressor. The options are described in below: - V/f control with slip compensation inactive (F24=0) In this control, the inverter controls a motor by the voltage and frequency according to the V/f pattern specified by function codes.

  • Page 19: Torque Boost Setting

    Motor Controllers AC Variable Frequency Drives RVBS Rated voltage at base frequency (F05) Set "0" or the rated voltage printed on the nameplate labeled on the motor. ➢ If "0" is set, the rated voltage at base frequency is determined by the power source of the inverter. The output voltage will vary in line with any variance in input voltage.
  • Page 20 V/f pattern (factory default). - V/f characteristics The RVBS offers a variety of V/f patterns and torque boosts, which include V/f patterns suitable for variable torque load such as general fans and pumps or for special pump load requiring high starting torque. Two types of torque boost are available: manual and automatic.

  • Page 21: Frequency Limiter

    4.2.4 Speed profile 4.2.4.1 Acceleration/Deceleration RVBS has been designed with a programmable speed profile for adaptation to the features requested on compressors control. The profile is designed by a linear ramp trends, defined via the acceleration/deceleration parameter. Specifications are subjected to change without notice.10/08/2021...
  • Page 22 4.2.4.2 Start/Stop At the startup of an RVBS, the initial output frequency is equal to the starting frequency 1 specified by F18. The inverter stops its output when the output frequency reaches the stop frequency specified by F20. Set the starting frequency to a level at which the motor can generate enough torque for startup. Generally, set the motor's rated slip frequency as the starting frequency.

  • Page 23: Motor Sound

    Motor Controllers AC Variable Frequency Drives RVBS < Speed profile applying start/stop function > Function Mod. Description U.M. Code add. 0x0012 Starting Frequency1 0.1Hz 0x0013 Starting Frequency1 (Holding time) 1000 0.01Sec. 0x0014 Stop Frequency 0.1Hz 0x0017 Stop Frequency (Holding time) 1000 0.01Sec.

  • Page 24: S-Curve Acceleration/Deceleration

    Motor Controllers AC Variable Frequency Drives RVBS ➢ This function is aimed at controlling the torque during deceleration; it has no effect if there is braking load. Function Mod. Description U.M. Code add. 0x0306 Deceleration Mode 0x030D Deceleration Characteristics 4.2.7 S-curve acceleration/deceleration H04 specifies the acceleration and deceleration patterns (patterns to control output frequency).

  • Page 25: Motor Parameters

    0x030B 2nd S-Curve deceleration range (At arrival) 4.2.8 Motor parameters Motor parameters are needed to operate RVBS, motor, and load optimally. P01 specifies the rated capacity of the motor. Enter the rated value given on the nameplate of the motor.
  • Page 26 Motor Controllers AC Variable Frequency Drives RVBS I: Rated current of the motor (A) %X (P06): Enter the value calculated by the following expression ���� ��1 + ��2 + ��2 + ���� + ���������� �� ��% = 100 (%) ��/( √ 3 ∗ ��)

  • Page 27: Commands

    Motor Controllers AC Variable Frequency Drives RVBS Motor (Slip compensation gain for 0x0207 1000 2000 0.1% driving) Motor (Slip compensation response 0x0208 1000 0.01Sec. time) Motor (Slip compensation gain for 0x0209 1000 2000 0.1% braking) 0x020A Motor (Rated slip frequency)
  • Page 28 Motor Controllers AC Variable Frequency Drives RVBS Restart mode after momentary power failure (Basic operation) The inverter recognizes a momentary power failure upon detecting the condition that DC link bus voltage goes below the under-voltage detection level, while the inverter is running. If the load of the...
  • Page 29 Motor Controllers AC Variable Frequency Drives RVBS works, and the output frequency of the inverter automatically decreases. When the output frequency matches the motor speed, the motor accelerates up to the original output frequency. See the figure below. In this case, the instantaneous over-current limiting must be enabled (H07 = 1).
  • Page 30 Motor Controllers AC Variable Frequency Drives RVBS Inverter’s action for the output frequency fall Data for H26 0.00 Follow the selected deceleration time 0.01 to 100.00 Follow data specified by H26 (Hz/s) Follow the setting of the PI processor in the current limiter. (The PI constant is prefixed inside the inverter.)

  • Page 31: Dc-Brake Function

    Motor Controllers AC Variable Frequency Drives RVBS < Timing scheme for failed retry (No. of reset times: 3) > Function Mod. Description U.M. code add. 0x0302 Auto-reset (Times) Times 0x0303 Auto-reset (Reset interval) 0.1Sec. 4.2.10 DC-brake function F15 through F17 specify the DC braking that prevents motor 1 from running by inertia during decelerate-to- stop operation.

  • Page 32: Status Variables

    (Braking response mode) 4.2.11 Status variables The status variables are the read-only type and supply information regarding the status of the RVBS including control, maintenance, and network or other general information. For example, the variables inform regarding the drive temperature, frequency/current/voltage supplied, the DC bus voltage, the number of drive switch-on hours, the number of functioning hours with the motor running for entire period and for the period from last alarm.

  • Page 33: External I/O

    Motor Controllers AC Variable Frequency Drives RVBS 0x050B Modbus Communication Error 0x050C Latest Alarm Contents 0x050D Last Alarm Contents 0x050E Second Last Alarm Contents 0x050F Third Last Alarm Contents 0x0510 Firmware Release 0x011 Analog Input Frequency Reference 0.01Hz R[k1] External I/O 4.3.1 Input terminal function assignment...

  • Page 34: Analog Input Setting - Compressor Application

    Analog input setting - compressor application RVBS supports the frequency command to source external analog voltage input port which allows 0V to 10V by setting F01=1. The analog input is processed to be used for frequency reference following next parameters setting: - Analog Input Voltage Offset (C10) C10 specifies real time editable offset factor for analog input voltage.

  • Page 35: Protective Functions

    Motor Controllers AC Variable Frequency Drives RVBS < Output frequency according to analog input voltage and its setting > - Analog Input Start Frequency (C16) C16 specifies the start frequency of inverter when F01=1 as follows:  0: Select Value in C12; 1: Select 0 Hz.

  • Page 36: Instantaneous Over-Current Limitation

    Motor Controllers AC Variable Frequency Drives RVBS inverter at full capability during acceleration and to limit the output current during constant speed operation. F26 specifies the output current level to determine whether to limit the output current. The function code data should be set, assuming the rated output current of the inverter as 100%, in increments of 1%.

  • Page 37: Motor Overload Prevention

    Motor Controllers AC Variable Frequency Drives RVBS Data for H07 Function Disable An over-current trip occurs at the instantaneous over-current limiting level. Enable The current limiting operation is effective. ➢ If any problem occurs when the motor torque temporarily drops during current limiting processing, it is necessary to cause an over-current trip (H07 = 0) and actuate a mechanical brake at the same time.

  • Page 38: Electronic Motor Overload

    Motor Controllers AC Variable Frequency Drives RVBS 4.4.4 Electronic motor overload F09 through F11 specify the thermal characteristics of the motor for its electronic thermal overload protection that is used to detect overload conditions of the motor. F09 selects the motor cooling mechanism to specify its characteristics, F10 specifies the overload detection current, and F11 specifies the thermal time constant.
  • Page 39 Motor Controllers AC Variable Frequency Drives RVBS F10 specifies the detection level (in amperes) at which the electronic thermal overload protection becomes activated. In general, set F10 to the rated current of motor when driven at the base frequency (i.e., 1.0 to 1.1 multiple of the rated current of motor 1 (P02)).

  • Page 40: Anti-Regenerative Control

    Motor Controllers AC Variable Frequency Drives RVBS 4.4.5 Anti-regenerative control H21 specifies the anti-regenerative control. In inverters not equipped with a PWM converter or braking resistor, if regenerative energy returned exceeds the inverter's braking capability, an overvoltage trip occurs. In case of H21 = 1: when the DC link bus voltage exceeds the preset voltage limiting level, the inverter lengthens the deceleration time to three times the specified time to decrease the deceleration torque to 1/3.

  • Page 41: Auxiliary Function

    Motor Controllers AC Variable Frequency Drives RVBS Auxiliary function 4.5.1 Data protection F00 specifies whether to protect function code data (except F00) and digital reference data (such as frequency command) from accidentally getting changed by pressing the keys. Data for F00...

  • Page 42: Cooling Fan Control

    Motor Controllers AC Variable Frequency Drives RVBS Data for F02 Run Command Source Description External signals Enable terminal command FWD or REV to run and stop the motor. Enable keys to run and stop the motor. Note that this runs Keypad command enables only the forward rotation.

  • Page 43: Alarms

    LED flashes RVBS has two LED on its circuit board. One is green LED, and the other is red LED. The green LED always flashes as long as the power of RVBS is supplied. The Red LED only flashes when alarm presents.

  • Page 44: Alarm Operation

    Motor Controllers AC Variable Frequency Drives RVBS Function Mod. Description U.M. code add. 0x0502 Alarm Code 0x050C Latest Alarm Contents 0x050D Last Alarm Contents 0x050E Second Last Alarm Contents 0x050F Third Last Alarm Contents Alarm operation H30 causes the inverter to generate a mock alarm in order to check whether external sequences function correctly at the time of machine setup.

  • Page 45: Alarm Map

    Motor Controllers AC Variable Frequency Drives RVBS Alarm map Name Description Alarm code Alarm output [30A, B, C] Overcurrent - Stops the inverter output to protect the inverter During protection from an overcurrent resulting from overload. acceleration - Stops the inverter output to protect the inverter...
  • Page 46 Motor Controllers AC Variable Frequency Drives RVBS Data save error If the data could not be saved during activation of the under-voltage during under protection function, the inverter displays the alarm code. voltage — — Retry function When the inverter stops due to a trip, this function automatically resets the inverter and restarts it.

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