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Getting Started With RV/PV


Introduction
This tutorial is intended as a supplement to the original manuals for the products. Therefore, use this as a means to familiarise yourself with the product, and not as a guide to a complete installation. The information in the tutorial is taken from the manual (s):
I532 Sysdrive RV series, User’s Manual
I537 Sysdrive PV series, User’s Manual

Product Information
RV and PV are two drives, of which PV is a simplified version of the RV. PV drives are most likely to fan and pump controls, while RV is designed for more demanding applications.

Inverter Assembly

Mechanical
In order for the inverter to be able to get rid of energy that it takes up during the operation, it is required to have a minimum assembly clearance between itself and other equipment. The minimum distance to the equipment above or below the adapter should be 120mm, while the minimum distance to the equipment to the sides should be no less than 30mm.

Electrical
  • On the inverter is a band that must be set properly in relation to the tension of the connection (applicable to converters that have 75kW or higher performance).
  • Large effects should be addressed, for example, during braking, there should be mounted brake resistance.
  • The emergency stop application (mechanical / electrical) should be designed so that the current criteria is fulfilled. A Remote Emergency Stop circuit should be used. For other solutions, please contact Omron.
  • Omron's drives are not built-in web filters, these are available as separate units. Depending on the size of the network the inverter will be able to filter when these are mounted under or next to the inverter. The distance between the end of the grid filter and input on the inverter should be minimal. All those online have current leak filters to the ground, and usually the size of this is a few mA. On plants with many converters in conjunction with other equipment that have current leaks to earth, this will cause the earth switch to turn out.
  • The cable between the inverter and the engine should have merged video, timing at 90 with merging achieves the greatest possible coverage. The EMC nipple should be fitted to the motor casing when the inverter has a clear cut shield. This saddle is then grounded with as short as possible open leads. The three leads will go through a ferrite ring 3 times (makes 2 loops) before termination of the inverter. Earth leads should not go through the ferrite ring.
    Web Filter, ferrite and approved cable must be mounted by EMC requirements for the installation to be correct.
Control Signal 
RV and PV have identical brand connections for both power and control leads. Since the PVhas somewhat less functionality, it has also somewhat fewer connections for control signals.
  • Inverter has 7 digital 24VDC inputs. Where the functionality of 5 of these are freely configurable (parameter H1-01 to 05), the second is not configurable.  Inputs operate forward (S1) and reverse (S2). The inverter has an internal 24VDC that can be used to control this. This tension can be retrieved between the SP and SN, where SN is 0V and SP is 24V. By softening SN and SC or SP and SC either gets respectively positive (PNP) or negative (NPN).
  • Inverter has 4 (RV, PV has 3) digital relays. One (MA / MB / MC) is an AC outlet. This output indicates the presence of an error / alarm. The remaining ports have freely configurable (H2-01 to 03) functionality.
  • Frequency reference to the inverter can be controlled by an analog signal that is 0-10V or 4-20mA. The signal voltage is connected between the A1 and AC, while the power signal is connected between the A2 and AC. If you want to use a Potentiometer connect it to between the V + (internal 15VDC), A1 and VC with the midpoint connected to A1. To switch from power to the voltage signal on the A2 set the switch S1: 2 (located just above the connection clamps) from ON to OFF. Power signal is the factory setting. Alternatively, the inverter is controlled by a pulse signal (only RV) between the clamps of RP and AC (H6-01).
  • Inverter also has the option of the analog signal status (short of the PV). This can be power or voltage signal. RV also has a pulse output to set an analog status (H6-06).
Using the control panel
There are two different control panels for RV and PV inverters. The panel shown below comes as standard, while the other is ordered separately.
  FWD: Lights when S1 (forward operation) is active.
REV: Lights when S2 (reverse operation) is active.
Seq: Lights when the digital inputs control the inverter.
REF: Lights when the rate is set from the analog input.
ALARM: Lights when an alarm is detected in the inverter.
DRIVE: Lights when the inverter is in operation mode.
QUICK: Lights when the inverter is in simple programming mode.
Adv: Lights when the inverter is in advanced programming mode.
Verify: Lights when the inverter is in verification mode.
AUTO TUNING: Lights when the inverter is in the auto tuning mode.
LOCAL / REMOTE: Switches between the operator and remote control.
MENU: Moves to the top of the menu.
ESCAPE: Moves one level up in the menu.
JOG: Jogger when the adapter is in local mode.
FWD / REV: Sets the direction in local mode.
RUN: Starts operation in local mode.
STOP: Stops operation in local mode.
>> / RESET: Switches between active and resets the wrong number.
↵: Selects active element and set new values.
Up / down: Steps in the menus and changing values.


STOP switch is light red, while it is green for the RUN switch. When the inverter is not in operation (standby) the red light is lit and the green is off, and when the adapter is in operation it illuminates the green and not the red.

Mode Overview
Below are listed the differences between the different modes.

Operating mode Inverter can only be run in this mode. Can also monitor values and status.
 
Simple programming mode Provides access to the most common parameters that are required to operate the inverter.
Advanced programming mode Provides access to all parameters.
Verification Mode Provides access to all parameters that are changed in accordance with the factory settings.
Auto Tuning Mode Used to customize the inverter to the motor in vector mode.

Use the MENU button to alternate between the different modes (see indicator for active mode). When you have reached the desired mode pressed ENTER. Numbers / values that can be changed using the arrow keys will blink. If you want to change a different number than the one blinking, press >>. ESC steps back (up) in the menu. This is shown in the chart below for adv mode.

Advanced programming mode

To switch between the A1 and 00 in the middle window use the >> key.

Parameter setting
Initialization / privileges / password
To ensure that the parameters of the inverter are set to factory defaults, check that "none" is displayed in verify mode. If not, all parameters that are different to the factory layout are shown in this list. To reset all the parameters to the factory defaults, set parameter A1-03 to 2220.
To change the parameters set the parameter A1-01 to 0 The factory setting 2 provides access to all parameters. This can provide a lockout to avoid all other personnel changing the parameters.
To change the password (0000-9999) in the A1-05 (go to A1-04 and hold RESET while the MENU is selected). Parameters for initialization and the level of access will be barred for the change. In order to revoke the barring put a valid password into the A1-04.
Example: If you want  to change the layout of the inverter. Solution: Change the first A1-01 to 0, then A1-05 for the password. The change can only be done you know the original password and put it into A1-04.

Management Method
Operation of the inverter can be controlled from various locations. This is done through the parameter b1-02. One of the options is the use of the digital inputs. One input has two options. These are for 2-wire and 3-wire control. 2-wire is the factory setting, and use the S1 and S2 to enter operation in FWD and REV direction. 3-wire is used if you want to separate impulse start and stop switches. This uses the reserved S1, S2 and S5. If you want to switch from a 2-wire to 3-wire or vice versa, it is through an initialization parameter in the A1-03. This is set at 2,220 for 2-wire and to 3330 for 3-wire.
Operating frequency reference signals can also come from various sources. This is controlled by setting the parameters b2-01. The most common sources for the operation and the reference is the control panel or the digital inputs.

Voltage / frequency, V / f, curve
Select one of the themes to customize the inverter to power the application.

E1-03 Characteristics Application Max. Rate
0 Constant torque Standard applications with constant torque, regardless of output rate.  50Hz
1  60Hz
2  60Hz max voltage from 50Hz
3  72Hz max voltage from 60Hz
4 Variable torque For applications with variable torqu that pumps and fans. 2 (square) or 3 times the voltage increases based on half the max. frequency.  50Hz(x3)
5  50Hz(x2)
6  60Hz(x3)
7  60Hz(x2)
8 High starting torque

Use these V / f-curves for the following applications:

  • Long distance between the inverter and the engine (> 150m)
  • Requirements for high starting torque (lifts and cranes)
  • Mounted web hosting
  • Reduced motor for an optimal application
 50Hz normal torque
9  50Hz extreme torque
A  60Hz normal torque
B  60Hz extreme torque
C High frequency output These V / f-curves used when the desired output rate is greater than 60Hz.
 
 90Hz max voltage from 60Hz
D  120Hz from 60Hz
E**  180Hz from 60Hz

If the fixed V / f-curves (E1-03 to D = 0) do not provide optimal operation, the V / f-curve can be optimized by setting the parameter E1-03 to F and defining V / f-curve using parameters E1-04 to E1-10 (E1-13). See the manual for further information. 

NB! The values within  E1-04 to E1-13 can only change when E1-03 is set to F.

Overview of the most commonly used parameters

Parameter Description Factory Setting
Control Method
A1-02
 
0: V / f control
1: V / f control with pulse feedback
2: Open loop vector
0 (2 for F7)
Reference source
b1-01
0: Operation Panel
1: Analog Input
2: Serial communication
3: Additional cards (for example, DeviceNet and Profibus)
4: Pulse Input
 
1
Operating source
b1-02
0: Operation Panel
1: Digital Inputs
2: Serial communication
3: Additional cards (for example, DeviceNet and Profibus)
1
Stop method
b1-03
0: Slowing stop
1: Stop the self-resistance
2: Adds DC voltage on the engine brake for a given time
3: Stop the self-resistance with disregard for operational input in the given time
0
Acceleration 1
C1-01
Specifies the time, in seconds, to change the speed from 0Hz to the maximum frequency 10.0
Deceleration 1
C1-02
Specifies the time, in seconds, to change the speed from the maximum rate to 0Hz
 
10.0
V / f curve
E1-03
0-E: Predefined V / f curve, see the table for
F: Custom V / f curve
F
Engine brand power
E2-01
Enter the value for the current rate from the engine note signs Depends on the model
Voltage drop treatment
L2-01
 
0: Unconnected. UV alarm at the voltage drop
1: Connected. Start automatically when the drop is less than L2-02, or UV alarm
2: Connected without generating UV alarm
 
0

Error Codes 
Inverters will display the error messages listed below if the inverter or the engine is prone to a serious error that will affect engine operation. For a complete list please refer to the current manual. See also the manual or contact Omron's representative, for information on how to repair the defect.
When the inverter detects an error, the following may occur:

  • An error code is displayed on the operator panel of the inverter.
  • Output for alarm (MA / MB and MC) will be activated if the error is classified as an alarm. The remaining ports can also be configured to this status (parameter H2-01 to H2-03, value = E (error) or 10 (alarm)).
  • Inverters will immediately halt the the motor voltage (Stop mode for any errors can be selected, these are either 'stop by their own friction' or 'stop ramp'). 

To reset an error message: 

  • Reset input, S3-S7, defined by the parameters H1-01 to H1-05, value = 14 S4 resets to the factory defaults.
  • Press RESET on the operator panel,
  • Turn OFF  tension.
Error Code Description of the error
oC Over Power.
Voltage AC from the engine power is greater than 200% of its nominal power
GF Earth error
PUF Fuse failure. Fuse for the main circuit has failed
ou Surge.
DC-bus voltage is too high.
3G3 􀂉 V-A2 .... > 410V
3G3 􀂉 V-A4 .... > 820V
Uu1 Under Voltage.
The detected voltage on the internal DC-bus is.
3G3 􀂉 V-A2 .... <190V
3G3 􀂉 V-A4 .... <380V
Uu2 Control voltage error.
Voltage Drop on board voltage.
OH(1) The temperature of the cooling finding has exceeded 105oC or the value in the L8-02.
L1-03 sets the control.
RV:rr Internal transistor brake failure
oL1 Overloading, engine.
Motor Guard is activated.
oL2 Overload, frequency converter.
oL3 Moment detection.
EF Remote error 􀂉
A remote error is detected on multi-functional inputs (S3-S7). EF number indicates the input that detects the error. EF0 enters the addition on the card.
oPr Operator Panel, error.
Errors in connection with the operator panel.
RV: CPF00
PV: LPF00
Operator Panel, error.
A failure of internal RAM memory is detected.
RV: CPF01
PV: LPF01
Operator Panel, error.
RV: CPF03
PV: LPF03
Failure of the internal memory.
Error detected in the EEPROM.
RV: CPF04/05
PV: LPF04/05
Failure of the A / D converter.


 

 




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Created 2008-11-18
Modified 2009-06-11
Views 6793

 

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