Schneider Electric

Telemecanique

Variable Speed/Frequency Drive (VSD/VFD) / Inverter

Altivar series

Altivar 71 series

(output) 0.1-599 Hz

Variable Speed / Frequency Drive (VSD/VFD) / Inverter
U/F ratio (2 points / 5 points)
Sensorless flux vector control
ENA System
Vector control with or without speed feedback
220% of the nominal motor torque for 2s
170% of the nominal motor torque for 60s

DC choke
built-in EMC filter
non-detachable displ.
built-in heatsnk.

323-528Vac (380Vac / 400Vac / 480Vac / 500Vac nom.)

graphical display + keypad (fixed; non-detachable)

3-phase (3P)

2.3A (380Vac; 4kHz)
2.1A (460Vac; 4kHz)
3.8A max. current (for 2s)
3.5A max. current (for 60s)

750W / 0.75kW

1HP

Modbus
CANopen

Wall mounting

5 x digital inputs (24Vdc; sink/source) (LI1-LI5; programmable)
1 x digital input (24Vdc; sink/source) (LI6; programmable as discrete or PTC input)
1 x digital input (24Vdc) (PWR safety input)

1 x digital output (C/O SPDT rly. contact) (R1)
2 x digital outputs (NO rly. contacts) (R2)

1 x analog input (-10...+10Vdc)
1 x analog input (0-10Vdc / 0-20mA)

1 x analog output (0-10Vdc / 0-20mA)

IP20
IP21
UL type 1

H230mm x W130mm x D175mm

3.7A (380Vac)
3A (480Vac)

2.4kVA (380Vac)

Control of asynchronous motors
Control of synchronous motors
Complex machines
Wood machines
Process machines
Material handling
Packaging
Hoisting
Textile machines
High-power machines

Phasing out

CSA
CE
C-Tick
DNV
GOST
NOM 117
UL
EN/IEC 61800-3 (environment 1 and 2; category C2)
EN/IEC 61800-5-1
EN 55011 (class A; group 1)
IEC 60721-3-3 class 3C1
IEC 60721-3-3 class 3S2
EN/IEC 60529
IEC 61000-4-2
IEC 61000-4-3
IEC 61000-4-4
IEC 61000-4-6
IEC 61000-4-11

With its different types of motor control and numerous integrated functions the Altivar 71 range of variable speed drives meets stringent requirements.
It is suitable for demanding drive systems
- Torque and speed accuracy at very low speed high dynamic performance with Flux Vector Control with or without sensor
- Extended frequency range for high-speed motors
- Parallel connection of motors and special drives using the voltage/frequency ratio
- Static speed accuracy and energy saving for open-loop synchronous motors
- Smooth flexibility for unbalanced machines with the ENA (ENergy Adaptation) System.

In conjunction with the wide voltage range for a 690V a line supply the Altivar 71 drive's advanced functions boost performance levels and make machines more versatile so they can be used for a large number of applications.

Hoisting
- Brake control adapted for translational -- hoisting and slewing movements
- Load measurement using weight sensor
- High-speed hoisting
- Brake feedback management
- Limit switch management
- Slack sling

Handling
- Very quick response times on transmission of a command (2ms +/-0.5ms)
- Reference via pulse train or differential analog input
- Control via the principal communication networks
- Position control via limit switches with time optimization at low speed
- Multiple parameter settings via parameter set switching

Packaging
- Up to 50Hz of the bandwidth
- Very quick response times on change of reference (2ms +/-0.5ms)
- Control via integrated CANopen machine bus
- Position control via limit switches

Textile machines
- High resolution of the digital speed reference (1/32000)
- Use of synchronous motor irrespective of load helps assure speed accuracy
- High bandwidth
- Spooling function
- Connection to common DC bus
- Control of both asynchronous and synchronous motors supported
- High-performance speed loop

Wood-working machines
- Fastest possible controlled stop on loss of line supply
- Control via integrated CANopen machine bus
- Protection of motor against overvoltages

Process machinery
- PID regulator
- High-resolution references
- Speed or torque control
- Connection to the principal communication networks
- Separate control section power supply
- Braking unit via re-injection to the line supply
- Connection to common DC bus

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