CARLO GAVAZZI VariFlex3 RVLF Series User manual

Motor Controllers AC Variable Frequency Drives Type
VariFlex3RVFF

Motor Controllers AC Variable Frequency Drives
Type Variflex3RVFF
Specifications are subjected to change without notice. 1
Contents
Preface......................................................................................................................5
Chapter 1 Safety Precautions.................................................................................6
1.1 Before Supplying Power to the Inverter .................................................................................6
1.2 Wiring....................................................................................................................................7
1.3 Before Operation...................................................................................................................8
1.4 Parameter Setting..................................................................................................................8
1.5 During Operation...................................................................................................................8
1.6 Maintenance, Inspection and Replacement.........................................................................10
1.7 Disposal of the Inverter........................................................................................................10
Chapter 2 Model Description................................................................................11
2.1 Nameplate Data ..................................................................................................................11
2.2 Model Identification..............................................................................................................11
Chapter 3 Environment and Installation..............................................................13
3.1 Environment........................................................................................................................13
3.2 Installation...........................................................................................................................14
3.2.1 Installation Spaces........................................................................................................14
3.2.2 Inverter Derating Based on Carrier Frequency..............................................................15
3.2.3 Inverter Derating Based on Temperature......................................................................16
3.3 Wiring Guidelines ................................................................................................................17
3.3.1 Wiring for main circuit....................................................................................................17
3.3.2 Wiring for control circuit.................................................................................................17
3.3.3 Cable Size and Length..................................................................................................18
3.3.4 Grounding.....................................................................................................................20
3.4 Considerations for peripheral equipment .............................................................................21
3.5 Inverter External View .........................................................................................................23
3.6 Warning Labels ...................................................................................................................25
3.7 Removing the Front Cover and Keypad...............................................................................26
3.7.1 Built-in Filter Type.........................................................................................................27
3.7.2 No Built-in Filter Type....................................................................................................28
3.8 Specifications......................................................................................................................29
3.8.1 Product Specifications...................................................................................................29
3.9 General Wiring Diagram......................................................................................................31
3.9.1 Input/Output Power Section Block Diagram ..................................................................32
3.9.2 Cooling Fan Supply Voltage Selection (400V class)......................................................33

Motor Controllers AC Variable Frequency Drives
Type Variflex3RVFF
Specifications are subjected to change without notice. 2
3.10 Terminal Description..........................................................................................................34
3.10.1 Main Circuit Terminals ................................................................................................34
3.10.2 Control Circuit Terminals.............................................................................................36
3.11 Inverter Dimension ............................................................................................................38
Chapter 4 Keypad and Programming Functions................................................42
4.1 LED Keypad........................................................................................................................42
4.1.1 Keypad Display and Keys.............................................................................................42
4.1.2 Seven Segment Display Description.............................................................................44
4.1.3 LED Indicator Description..............................................................................................46
4.1.4 Power-up Monitor..........................................................................................................48
4.1.5 Modifying Parameters/Set Frequency Reference..........................................................49
4.1.6 Operation Control..........................................................................................................51
4.2 Programmable Parameter Groups.......................................................................................52
4.3 Parameter Function Description ..........................................................................................94
4.4 Built-in PLC Function.........................................................................................................309
4.4.1 Basic Command..........................................................................................................309
4.4.2 Basic Command Function...........................................................................................310
4.4.3 Application Functions..................................................................................................311
4.5 Modbus Protocol Descriptions...........................................................................................319
4.5.1 Communication Connection and Data Frame..............................................................319
4.5.2 Register and Data Format...........................................................................................323
4.6 BacNET Protocol Descriptions...........................................................................................341
4.6.1 BACnet Services.........................................................................................................341
4.6.2 BACnet Protocol Structure..........................................................................................342
4.6.3 BACnet Specifications.................................................................................................343
4.6.4 BACnet Object Properties...........................................................................................344
4.7 MetaSys N2 Communication Protocol ...............................................................................347
4.7.1 Introduction and Setting ..............................................................................................347
4.7.2 MetaSys N2 Specification ...........................................................................................347
4.7.3 Definition of MetaSys N2 Communication Protocol .....................................................348
4.7.4. MetaSys N2 Communication Protocol in RVFF Model ...............................................349
Chapter 5 Check Motor Rotation and Direction................................................353
Chapter 6 Speed Reference Command Configuration.....................................354
6.1 Reference from Keypad.....................................................................................................354

Motor Controllers AC Variable Frequency Drives
Type Variflex3RVFF
Specifications are subjected to change without notice. 3
6.2 Reference from External Analog Signal (0-10V / 4-20mA)................................ 355
6.3 Reference from Serial Communication RS485 (00-05=3)..................................................357
6.4 Reference from two Analog Inputs.....................................................................................359
6.5 Change Frequency Unit from Hz to rpm ............................................................................359
Chapter 7 Operation Method Configuration (Run/Stop) ..................................360
7.1 Run/Stop from the Keypad (00-02=0) –Default Setting.....................................................360
7.2 Run/Stop from External Switch/Contact or Pushbutton (00- 02=1).....................................361
7.3 Run/Stop from Serial Communication RS485 (00-02=3)....................................................361
Chapter 8 Motor and Application Specific Settings.........................................363
8.1 Set Motor Nameplate Data (02-01, 02-05).........................................................................363
8.2 Acceleration and Deceleration Time (00-14, 00-15)...........................................................364
8.3 Torque Compensation Gain (01-10)..................................................................................365
8.4 Automatic Energy Savings Function (11-19)......................................................................366
8.5 Emergency Stop................................................................................................................368
8.6 Direct / Unattended Startup...............................................................................................369
Chapter 9 Using PID Control for Constant Flow/Pressure Applications.........372
9.1 What is PID Control?.........................................................................................................372
9.2 Connect Transducer Feedback Signal (10-01) ..................................................................374
9.3 Engineering Units..............................................................................................................375
Chapter 10 Troubleshooting and Fault Diagnostics ........................................376
10.1 General ...........................................................................................................................376
10.2 Fault Detection Function..................................................................................................376
10.3 Warning / Self-diagnosis Detection Function ...................................................................382
10.4 Auto-tuning Error.............................................................................................................391
10.5 PM Motor Auto-tuning Error.............................................................................................392
10.6 General troubleshooting ..................................................................................................393
10.7 Troubleshooting of the inverter........................................................................................394
10.8 Routine and periodic inspection.......................................................................................401
10.9 Maintenance....................................................................................................................402
Chapter 11 Drive Peripheral devices and Options ...........................................403
11.1 Braking Resistors and Braking Units................................................................................403
11.2 AC Line Reactors ............................................................................................................404
11.3 Input Current and Fuse Specifications.............................................................................405
11.4 Other options...................................................................................................................406
11.5 Communication Options ..................................................................................................409
11.6 Profibus Communication Option Card..............................................................................410

Motor Controllers AC Variable Frequency Drives
Type Variflex3RVFF
Specifications are subjected to change without notice. 4
11.6.1 Introduction...............................................................................................................410
11.6.2 Wiring Diagram of RV-PDP.......................................................................................411
11.6.3 Installation.................................................................................................................412
11.6.4 Descriptions of Terminals, LEDs and DIP switch.......................................................413
11.6.5 Related Parameters for Communication....................................................................414
11.6.6 Profibus I/O List ........................................................................................................414
11.6.7 Error Message ..........................................................................................................418
11.5.8 GSD File...................................................................................................................418
Chapter 12 Installation Instruction with Ferrite Ring Core ...............................420
Appendix A Instruction for UL ...........................................................................424

Motor Controllers AC Variable Frequency Drives
Type Variflex3RVFF
Specifications are subjected to change without notice. 5
Preface
The RVFF product is an inverter designed to control three-phase induction and permanent
magnet synchronous motors. Please read this manual carefully to ensure correct operation,
safety and to become familiar with the inverter functions.
The RVFF inverter is an electrical/electronic product and must be installed and handled by
qualified service personnel.
Improper handling may result in incorrect operation, shorter life cycle, or failure of this
product as well as the motor.
All RVFF documentation may be subjected to change without prior notice. The latest edition
of these documents can be downloaded for use from our website at
http://www.productselection.net/
Available documentation:
1. RVFF Quick setup guide
2. RVFF Instruction manual
Read this instruction manual thoroughly before proceeding with installation, connections
(wiring), operation, maintenance or inspection.
The RVFF requires users to have sound knowledge of the product and they have to
familiarize with all the safety information and precautions before proceeding to operate the
inverter.
Please pay close attention to the safety precautions indicated by the warning and
caution symbol.
Warning
Failure to ignore the information indicated by the warning symbol
may result in death or serious injury.
Caution
Failure to ignore the information indicated by the caution symbol
may result in minor or moderate injury and/or substantial property
damage.

Motor Controllers AC Variable Frequency Drives
Type Variflex3RVFF
Specifications are subjected to change without notice. 6
Chapter 1 Safety Precautions
1.1 Before Supplying Power to the Inverter
Warning
➢The main circuit must be wired correctly before operated. Input terminals (R/L1, S/L2,
T/L3) must be connected with three phase supplyand terminals U/T1, V/T2,W/T3 must
only be used to connect the motor. Connecting the input supply to any of the U/T1, V/T2
or W/T3 terminals will cause damage to the inverter.
➢This product is compliance with the standard IEC 61800-3. In a domestic environment
this product may cause radio interference in which case the user may need to apply
corrective measures.
➢Over temperature protection function on motor is disabled.
Caution
➢To avoid the front cover from disengaging or other physical damage, do not carry the
inverter by its cover. Support the unit by its heat sink when transporting. Improper
handling can damage the inverter or injure personnel, and should be avoided.
➢To avoid the risk of fire, do not install the inverter on or near flammable objects. Install
on non-flammable objects such as metal surfaces.
➢If several inverters are placed inside the same control panel, provide adequate
ventilation to maintain the temperature below 40°C/104°F (50°C/122°F without a dust
cover) to avoid overheating or fire.
➢When removing or installing the digital operator, turn off the power first, and then follow
the instructions in this manual to avoid operator error or loss of display caused byfaulty
connections.

Motor Controllers AC Variable Frequency Drives
Type Variflex3RVFF
Specifications are subjected to change without notice. 7
1.2 Wiring
Warning
➢Always turn OFF the power supply before attempting inverter installation and wiring of
the user terminals.
➢Wiring must be performed by a qualified personnel/certified electrician.
➢Make sure the inverter is properly grounded (grounding impedance shall be less than
10Ω). It is required to disconnect the ground wire in the control board to avoid the
sudden surge causing damage on electronic parts if it is improperly grounded.
➢Please check and test emergency stop circuits after wiring. (Installer is responsible for
the correct wiring).
➢Never touch any of the input or output power lines directly or allow any input or output
power lines to come in contact with the inverter case.
➢Do not perform a dielectric voltage withstand test (megger) on the inverter or this will
result in inverter damage to the semiconductor components.
Caution
➢The line voltage applied must comply with the inverter’s specified input voltage. (See
product nameplate section 2.1).
➢Braking resistor and braking unit can only be connected to the designated terminals.
(See section 3.3.5).
➢Do not connect a braking resistor directly to the DC terminals P(+) and N(-), otherwise
fire may result.
➢Use wire gauge recommendations and torque specifications. (See wire gauge and
torque specification section 3.3.1).
➢Never connect input power to the inverter output terminals U/T1, V/T2, W/T3.
➢Do not connect a contactor or switch in series with the inverter and the motor.
➢Do not connect a power factor correction capacitor or surge suppressor to the inverter
output.
➢Ensure the interference generated by the inverter and motor does not affect peripheral
devices.

Motor Controllers AC Variable Frequency Drives
Type Variflex3RVFF
Specifications are subjected to change without notice. 8
1.3 Before Operation
Warning
➢Ensure the inverter capacity matches the parameters 13-00 before supplying power.
➢Reduce the carrier frequency (parameter 11-01) if the cable from the inverter to the
motor is over 80 ft. (25m). A high-frequency current can be generated by stray
capacitance between the cables and result in an overcurrent trip of the inverter, an
increase in leakage current, or an inaccurate current readout.
➢Be sure to install all covers before turning on power. Do not remove any of the covers
while power to the inverter is on, otherwise electric shock may occur.
➢Do not operate switches with wet hands, otherwise electric shock may result.
➢Do not touch inverter terminals when energized even if inverter has stopped, otherwise
electric shock may result.
1.4 Parameter Setting
Caution
➢Do not connect a load to the motor while performing an auto-tune.
➢Make sure the motor can freely run and there is sufficient space around the motor when
performing a rotational auto-tune.
1.5 During Operation
Warning
➢Ensure all covers are installed before turning on power. Do not remove any of the
covers while power to the inverter is on, otherwise electric shock may occur.
➢Do not connect or disconnect the motor during operation. This will cause the inverter to
trip and may cause damage to the inverter.
➢Operations may start suddenly if an alarm or fault is reset with a run command active.
Ensure that no run command is active upon resetting the alarm or fault, otherwise
accidents may occur.
➢Do not operate switches with wet hands, otherwise electric shock may result.

Motor Controllers AC Variable Frequency Drives
Type Variflex3RVFF
Specifications are subjected to change without notice. 9
➢An external emergency stop switch is enabled when parameter 08-30 is set for the run
permissive function.
➢It provides an independent external hardware emergency switch, which emergently
shuts down the inverter output in the case of danger.
➢If automatic restart after power recovery (parameter 07-00) is enabled, the inverter will
start automatically after power is restored.
➢Make sure it is safe to operate the inverter and motor before performing a rotational
auto-tune.
➢Do not touch inverter terminals when energized even if inverter has stopped, otherwise
electric shock may result.
➢Do not check signals on circuit boards while the inverter is running.
➢After the power is turned off, the cooling fan may continue to run for some time.
Caution
➢Do not touch heat-generating components such as heat sinks and braking resistors.
.
➢Carefully check the performance of motor or machine before operating at high speed,
otherwise Injury may result.
➢Note the parameter settings related to the braking unit when applicable.
➢Do not use the inverter braking function for mechanical holding, otherwise injury may
result.
➢Do not check signals on circuit boards while the inverter is running.

Motor Controllers AC Variable Frequency Drives
Type Variflex3RVFF
Specifications are subjected to change without notice. 10
1.6 Maintenance, Inspection and Replacement
Warning
➢Ensure a minimum delay of 5 minutes after power has been turned OFF before starting
an inspection. Also confirm that the charge light is OFF and that the DC bus voltage
has dropped below 25Vdc. Ensure a minimum delay of 15 minutes while inverter is over
20HP.
➢Never touch high voltage terminals in the inverter.
➢Ensure that the power tothe inverter is disconnected before disassembling the inverter.
➢Only authorized personnel should perform maintenance, inspection, and replacement
operations. (Remove any metal jewellery such as watches and rings and use insulated
tools).
Caution
➢The Inverter can be used in an environment with a temperature rangefrom 14° to +104°F
(-10 to +40°C) and relative humidity of 95% non-condensing.
➢The inverter must be operated in a dust, gas, mist and moisture free environment.
1.7 Disposal of the Inverter
Caution
➢Please dispose of this unit with care as an industrial waste and according to your
required local regulations.
➢The capacitors of inverter main circuit and printed circuit board are considered as
hazardous waste and must not be burned.
➢The plastic enclosure and parts of the inverter such as the top cover board will release
harmful gases if burned.
WEEE designation
Do not dispose of the product together with the household waste but according
to the disposal regulations for electronic waste locally applicable at the product
installation site.

Motor Controllers AC Variable Frequency Drives
Type Variflex3RVFF
Specifications are subjected to change without notice. 11
Chapter 2 Model Description
2.1 Nameplate Data
It is essential to verify the RVFF inverter nameplate and make sure that the RVFF inverter has the
correct rating so it can be used in the desired application with the proper sized AC motor.
Unpack the RVFF inverter and check the following:
(1) The RVFF inverter and the quick setting guide are contained in the package.
(2) The RVFF inverter has not been damaged during transportation there should be no dents or
parts missing.
(3) The RVFF inverter is the type you ordered. You can check the type and specifications on the
main nameplate.
(4) Ensure that the input voltage range meets the input power requirements.
(5) Ensure that the motor HP matches the motor rating of the inverter.
2.2 Model Identification
Inverter model and motor rating
UL and CE Marks
P/N BARCODE
S/N BARCODE
Input power specifications
Output power specifications
3.7kW

Motor Controllers AC Variable Frequency Drives
Type Variflex3RVFF
Specifications are subjected to change without notice. 12
Inverter Models –Motor Power Rating
Input Voltage
Range
RVFF Model
Horse
Power Rating
(HP)
Nominal
Motor Power
(kW)
Filter
with
without
Three phase:
380~480VAC
(+10% to -15%),
50/60Hz
RVFFA3400400F
5
3.7
◎
RVFFA3400550F
7.5
5.5
◎
RVFFA3400750F
10
7.5
◎
RVFFB3401100F
15
11
◎
RVFFB3401500F
20
15
◎
RVFFC3401850F
25
18.5
◎
RVFFC3402200F
30
22
◎
RVFFC3403000F
40
30
◎
RVFFD3403700F
50
37
◎
RVFFD3404500F
60
45
◎
RVFFD3405500F
75
55
◎
RVFFE3407500
100
75
◎
RVFFE3409000
125
90
◎
RVFFF34011000
150
110
◎
RVFFF34013200
175
132
◎
RVFFF34016000
215
160
◎
Note:
⚫Short Circuit Rating: 5KA.

Motor Controllers AC Variable Frequency Drives
Type Variflex3RVFF
Specifications are subjected to change without notice. 13
Chapter 3 Environment and Installation
3.1 Environment
The environment will directly affect the proper operation and the life span of the inverter. To
ensure that the inverter will give maximum service life, please comply with the following
environmental conditions:
Protection
Protection
Class
IP20/NEMA 1
Ambient Environment
Operating
Temperature
Ambient temperature: -10°C to +40°C (14°F to 104°F)
-10°C to +40°C (14°F to 104°F)
The maximum operating temperature is 60°C, but it is required to de-rate 2% of current
at each additional 1°C. If several inverters are placed in the same control panel, provide
a heat removal means to maintain ambient temperatures.
If several inverters are placed in the same control panel, provide a heat removal means
to maintain ambient temperatures below 40°C
Storage
Temperature
-20°C to +70°C (-4°F to 158 °F)
Humidity
95% non-condensing
Relative humidity 5% to 95%, free of moisture.
(Follow IEC60068-2-78 standard)
Altitude
< 1000m (3,281 ft.)
Installation
Site
Avoid direct sunlight.
Avoid exposure to rain or moisture.
Avoid oil mist and salinity.
Avoid corrosive liquid and gas.
Avoid dust, lint fibres, and small metal filings.
Avoid electromagnetic interference (soldering machines, power machines).
Keep away from radioactive and flammable materials.
Avoid vibration (stamping, punching machines etc.).
Add a vibration-proof pad if the situation cannot be avoided.
Shock
Maximum acceleration: 1.2G (12m/s²), from 49.84 to 150 Hz
Displacement amplitude : 0.3mm (peak value), from 10 to 49.84 Hz
(Follow IEC60068-2-6 standard)

Motor Controllers AC Variable Frequency Drives
Type Variflex3RVFF
Specifications are subjected to change without notice. 14
3.2 Installation
3.2.1 Installation Spaces
Wheninstalling the inverter, ensure that inverter isinstalled in upright position (vertical direction) and
there is adequate space around the unit to allow normal heat dissipation as per the following Fig.
3.2.1
`
Fig 3.2.1: RVFF Installation space
X = 1.18” (30mm) for inverter ratings up to 18.5kW
X = 1.96” (50mm) for inverter ratings 22kW or higher
Important Note: The inverter heatsink temperature can reach up to 90°C (194°F) during operation;
ensure that the insulation material is rated for this temperature.
◆Capacitor reforming guide after long storage
For correct performance of this product after long storage before use it is important that Inverter
Capacitors are reformed according to the guide below:
Storage time
Procedure to re-apply voltage
≦1year
Apply rated voltage (*1) of inverter in the normal way
Between1-2 years
Apply rated voltage of inverter to the product for one hour
≧2 years
Use a variable AC power supply to
1. Connecting 25% of inverter rated voltage for 30 minutes.
2. Connecting 50% of inverter rated voltage for 30 minutes.
3. Connecting 75% of inverter rated voltage for 30 minutes.
4. Connecting 100% of inverter rated voltage for 210 minutes.
Once the procedures completed, inverter just can be used
normally.
*1：Rated voltage: please connects rated voltage according to model label of inverter.
5.9in.
150mm 5.9in.
150mm
Air Flow
Ambient
temperature
-10°C to
+40°C
5.9in.
150mm
X
5.9in.
150mm
X

Motor Controllers AC Variable Frequency Drives
Type Variflex3RVFF
Specifications are subjected to change without notice. 15
400V 5~30HP
100%
A
B
0 4KHz 8KHz 16KHz
Carrier
Frequency (Fc)
400V 40HP
100%
78%
47%
0 2KHz 8KHz 16KHz
400V 50~60HP
100%
A
B
0 4KHz 5KHz 12KHz
3.2.2 Inverter Derating Based on Carrier Frequency
Curves below show the applicable output current de-rate due to setting of carrier frequency.
Model
0400
0550
0750
1100
A
100%
83%
85%
78%
B
60%
50%
51%
47%
Model
1500
1850
2200
A
77%
82%
89%
B
46%
49%
53%
Model
3700
4500
A
83%
85%
B
67%
68%
Carrier
Frequency (Fc)
Rated Current
Ratio
Rated Current
Ratio
Carrier
Frequency (Fc)
Rated Current
Ratio

Motor Controllers AC Variable Frequency Drives
Type Variflex3RVFF
Specifications are subjected to change without notice. 16
Carrier
Frequency (Fc)
◆ Notes for using the PM motor
1. The inverter carry frequency (11-01) need to set upper than 6KHz.
2. The rating current of the inverter at 6KHz carry frequency (11-01) (need refer to the de-rating
curve) must be bigger than the PM motor rating current.
3.2.3 Inverter Derating Based on Temperature
Curves below show the applicable output current de-rate due to the ambient temperature of 40oC
to 60oC.
Model
5500
7500
9000
A
88%
81%
91%
B
62%
57%
64%
Model
11000
13200
16000
A
87%
86%
88%
B
61%
60%
61%
100%
60%
0 40
℃
60
℃
Rated Current
Ratio
400V 75~215HP
100%
A
B
0 4KHz 5KHz 10KHz
1616KHz
Rated Current
Ratio

Motor Controllers AC Variable Frequency Drives
Type Variflex3RVFF
Specifications are subjected to change without notice. 17
3.3 Wiring Guidelines
•Do NOT remove any protective covers or attempt any wiring while input power is
applied. Connect all wiring before applying input power. When making wiring
changes after power up, remove input power and wait a minimum of five minutes
after power has been turned off before starting. Also confirm that the charge lamp
is off and that DC voltage between terminals B1/P or (+) and (-) does not exceed
25V, otherwise electric shock may result.
•Only authorized personnel should work on the equipment. (Take off metal
jewellery such as watches and rings and use insulated tools.), otherwise electric
shock or injury may result.
3.3.1 Wiring for main circuit
(1) The Input power supply voltage can be connected in any phase sequence to power input
terminals R/L1, S/L2, or T/L3 on the terminal block.
(2) DO NOT connect the AC input power source to the output terminals U/T1, V/T2 and. W/T3.
(3) Connect the output terminals U/T1, V/T2, W/T3 to motor lead wires U/T1, V/T2, and W/T3,
respectively.
(4) Check that the motor rotates forward with the forward run source. If it does not, swap any 2
of the output cables to change motor direction.
(5) DO NOT connect phase correcting capacitors or LC/RC noise filter to the output circuit.
3.3.2 Wiring for control circuit
(1) Separate the wiring for control circuit terminals from main circuit wiring for terminals (R/L1,
S/L2, T/L3, U/T1, V/T2, and W/T3).
(2) Separate the wiring for control circuit terminals (R1A, R1B, R1C/R2A, R2C/R3A, R3C)
from wiring for terminals S1～S6, A01, A02, GND, +10V-, AI1, AI2, and GND wiring.
(3) Use shielded twisted-pair cables (#24 - #14 AWG/0.5 -2 mm2) for control circuits to minimize
noise problems. The maximum wiring distance should not exceed 50m (165ft).
Danger
!
Shield
Twisted Pair
Wrap with insulating Tape
Ground Shield at Inverter
end ONLY
DO NOT Ground Shield at
this end

Motor Controllers AC Variable Frequency Drives
Type Variflex3RVFF
Specifications are subjected to change without notice. 18
3.3.3 Cable Size and Length
◼Cable Size
The following table shows the recommended cable size for each of the RVFF models.
RVFF Model
Wire size (mm2)
Power
supply
Horse power
(HP)
Rated
KVA
Rated
current (A)
Main
circuit
Grounding
E(G)
Control
circuit
400V
3 Ø
5HP
7.0
9.2
2～5.5
3.5～5.5
0.5～2
7.5HP
8.5
12.1
2～5.5
3.5～5.5
0.5～2
10HP
13.3
17.5
3～5.5
3.5～5.5
0.5～2
15HP
18
23
5.5
5.5
0.5～2
20HP
24
31
8
8
0.5～2
25HP
29
38
8
8
0.5～2
30HP
34
44
8
8
0.5～2
40HP
41
54
14
8
0.5～2
50HP
55
73
22
8
0.5～2
60HP
67
88
22
14
0.5～2
75HP
79
103
38
14
0.5～2
100HP
111
145
60
22
0.5～2
125HP
126
168
80
22
0.5～2
150HP
159
208
150
22
0.5～2
175HP
191
250
150
22
0.5～2
215HP
226
296
200
30
0.5～2
◼Cable length
The length of the cables between the power supply and the input of the drive can cause a significant
phase to phase voltage reduction due to the voltage drop across the cables. The wire size shown in
the above table is based on a maximum voltage drop of 2%. If this value is exceeded, a wire size
having larger diameter may be needed. To calculate phase-to-phase voltage drop, apply the
following formula:
Phase-to-phase voltage drop (V) = 3 ×resistance of wire (Ω/km) × length of line m) × current×10-3
◼Cable length vs. Carrier frequency
The allowable setting of the PWM carrier frequency is also determined by motor cable length and is
specified in the following table.
Cable length between
the inverter and
Motor in m (ft.).
< 30
(100)
30–50
(100–165)
50–100
(166–328)
> 100
(329)
Recommended carrier
frequency allowed
Parameter 11-01
16kHz
(max)
10 kHz
(max)
5 kHz
(max)
2 kHz
(max)

Motor Controllers AC Variable Frequency Drives
Type Variflex3RVFF
Specifications are subjected to change without notice. 19
◼Wiring Gauges and Tightening Torque
To comply with UL standards, use UL approved copper wires (rated 75° C) and round crimp terminals
(UL Listed products) as shown in table below when connecting to the main circuit terminals. Carlo
Gavazzi recommends using crimp terminals manufactured by NICHIFU Terminal Industry Co., Ltd
and the terminal crimping tool recommended by the manufacturer for crimping terminals and the
insulating sleeve.
Wire size
mm2 (AWG)
Terminal
Screw
size
Model of round
crimp terminal
Tightening torque
kgf.cm (in.lbs)
Model of
insulating
sleeve
Model of
crimp tool
0.75 (18)
M3.5
R1.25-3.5
8.2 to 10 (7.1 to 8.7)
TIC 1.25
NH 1
M4
R1.25-4
12.2 to 14 (10.4 to 12.1)
TIC 1.25
NH 1
1.25 (16)
M3.5
R1.25-3.5
8.2 to 10 (7.1 to 8.7)
TIC 1.25
NH 1
M4
R1.25-4
12.2 to 14 (10.4 to 12.1)
TIC 1.25
NH 1
2 (14)
M3.5
R2-3.5
8.2 to 10 (7.1 to 8.7)
TIC 2
NH 1 / 9
M4
R2-4
12.2 to 14 (10.4 to 12.1)
TIC 2
NH 1 / 9
M5
R2-5
22.1 to 24 (17.7 to 20.8)
TIC 2
NH 1 / 9
M6
R2-6
25.5 to 30.0 (22.1 to 26.0)
TIC 2
NH 1 / 9
3.5/5.5 (12/10)
M4
R5.5-4
12.2 to 14 (10.4 to 12.1)
TIC 3.5/5.5
NH 1 / 9
M5
R5.5-5
20.4 to 24 (17.7 to 20.8)
TIC 3.5/5.5
NH 1 / 9
M6
R5.5-6
25.5 to 30.0 (22.1 to 26.0)
TIC 3.5/5.5
NH 1 / 9
M8
R5.5-8
61.2 to 66.0 (53.0 to 57.2)
TIC 3.5/5.5
NH 1 / 9
8 (8)
M4
R8-4
12.2 to 14 (10.4 to 12.1)
TIC 8
NOP 60
M5
R8-5
20.4 to 24 (17.7 to 20.8)
TIC 8
NOP 60
M6
R8-6
25.5 to 30.0 (22.1 to 26.0)
TIC 8
NOP 60
M8
R8-8
61.2 to 66.0 (53.0 to 57.2)
TIC 8
NOP 60
14 (6)
M4
R14-4
12.2 to 14 (10.4 to 12.1)
TIC 14
NH 1 / 9
M5
R14-5
20.4 to 24 (17.7 to 20.8)
TIC 14
NH 1 / 9
M6
R14-6
25.5 to 30.0 (22.1 to 26.0)
TIC 14
NH 1 / 9
M8
R14-8
61.2 to 66.0 (53.0 to 57.2)
TIC 14
NH 1 / 9
22 (4)
M6
R22-6
25.5 to 30.0 (22.1 to 26.0)
TIC 22
NOP 60/ 150H
M8
R22-8
61.2 to 66.0 (53.0 to 57.2)
TIC 22
NOP 60/ 150H
30/38 (3/2)
M6
R38-6
25.5 to 30.0 (22.1 to 26.0)
TIC 38
NOP 60/ 150H
M8
R38-8
61.2 to 66.0 (53.0 to 57.2)
TIC 38
NOP 60/ 150H
50/60 (1/1/0)
M8
R60-8
61.2 to 66.0 (53.0 to 57.2)
TIC 60
NOP 60/ 150H
M10
R60-10
102 to 120 (88.5 to 104)
TIC 60
NOP 150H
70 (2/0)
M8
R70-8
61.2 to 66.0 (53.0 to 57.2)
TIC 60
NOP 150H
M10
R70-10
102 to 120 (88.5 to 104)
TIC 60
NOP 150H
80 (3/0)
M10
R80-10
102 to 120 (88.5 to 104)
TIC 80
NOP 150H
M16
R80-16
255 to 280 (221 to 243)
TIC 80
NOP 150H
100 (4/0)
M10
R100-10
102 to 120 (88.5 to 104)
TIC 100
NOP 150H
M12
R100-12
143 to 157 (124 to 136)
TIC 100
NOP 150H
M16
R80-16
255 to 280 (221 to 243)
TIC 80
NOP 150H