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6

Connection terminals of the top row of the double-decker terminal block:

Terminal

Connection

(8) +10V SELV

10 V DC fixed voltage output

(7) 0-10V/0-20mA, 

Analog In 1

Analogue input 1 switchable voltage/current 
0 – 10 V/2 – 10 V/0 – 20 mA/4 – 20 mA

(6) –10...+10V, Analog In 2

Analogue input 2, voltage input

(4) RS485 A

Serial interface RS485 line A

(5) RS485 B

Serial interface RS485 line B

(9) GND SELV

Signal earth

PT100 - 1A

Temperature input 1 connection A (PT100)

PT100 - 1B

Temperature input 1 connection B (PT100)

PT100 - 2A

Temperature input 2 connection A (PT100)

PT100 - 2B

Temperature input 2 connection B (PT100)

(9) GND SELV 

Signal earth

DIP switch block 1 with 4 switches 

Setting

Function

DIP-switch 1

OFF

Speed set operation

ON

Controlled operation

DIP-switch 2

OFF

No control via RS485/field bus interface

ON

Control via RS485/field bus interface

DIP-switch 3

OFF

No analogue control

ON

Analogue control

DIP-switch 4

OFF

Pressure mode

ON

Vacuum mode

DIP switch block 2 with 2 switches

DIP switch 1

DIP switch 2

Analogue input 1

OFF

OFF

0 – 10V

OFF

ON

0 – 20mA

ON

OFF

2 – 10V

ON

ON

4 – 20mA

Relais

Function

Description

11 (21)

14 (24)

12 (22)

Relay 1
AOM

Aggregated operation message.

Device stands still: 

The device is turning at a speed > 0.

11 - 12

11 - 14

Relay 2
AEM

Aggregated error message.

Fault-free operation:

Malfunction:

21 - 22

21 - 24

NOTE

All control voltages refer to a common reference potential (GND). 24 V can be taken from 
the respective terminals. The sum of the currents may not exceed 100 mA.

Summary of Contents for VariAir VAU4/3

Page 1: ...www becker international com 1 28100241101 11 12 operating instructions Frequency converter vAU4 3 QUICK START GUIDE ...

Page 2: ...ns The latter should be read thoroughly before initial start up The quick start guide contains safety instructions and helps the user to put the basic model of the VAU 4 3 into operation and to operate it with the default settings Intended use i Frequency converters are components that are intended for installation into electrical systems or machines When being installed into machines the commissi...

Page 3: ...r devices that are es pecially sensitive to static electricity Therefore please avoid touching the circuit boards or components with your hands or with metallic objects Only the screws of the terminal strips may be touched by insulated screwdrivers when wires are connected The frequency converter is intended for permanent connection only and may not be operated without an effective earth connectio...

Page 4: ...y charged parts and line connections must not be touched directly after frequency converters are disconnected from the supply voltage as the capacitors may be charged Observe the corresponding signs about this on the frequency converters During operation all covers must be kept closed The frequency converter is maintenance free under normal operating conditions If the air is dusty the cooling surf...

Page 5: ...Rel 2 Terminal Connection L1 L2 L3 Mains feeder phase L1 L2 L3 PE Mains feeder earth line PE U V W Connection strands motor winding U V W X Y Z Feeder phase external ventilator phase L1 L2 L3 optional Connection terminals of the bottom row of the double decker terminal block Terminal Connection 1 24 V SELV 1 24 V DC fixed voltage output 2 Digital 1 Digital input 1 Digital 2 Digital input 2 Digital...

Page 6: ... switch block 1 with 4 switches Setting Function DIP switch 1 OFF Speed set operation ON Controlled operation DIP switch 2 OFF No control via RS485 field bus interface ON Control via RS485 field bus interface DIP switch 3 OFF No analogue control ON Analogue control DIP switch 4 OFF Pressure mode ON Vacuum mode DIP switch block 2 with 2 switches DIP switch 1 DIP switch 2 Analogue input 1 OFF OFF 0 ...

Page 7: ...with the continuously lit red LED Table of possible error messages Display Malfunction Short circuit Overvoltage Intermediate circuit Undervoltage Intermediate circuit Overtemperature motor Mains interruption Offset current sensor Overtemperature Power output stage Overcurrent Inner temperature too high Charge relay defective I2 t limitation Earth fault Feldbus timeout IO controller defective RS48...

Page 8: ...m installation altitude Up to 1000 m above sea level without loss of performance Weight kg 5 6 Type of protection IP 55 Maximum cross section power supply mm2 2 5 Maximum cross section pilot wires mm2 1 5 Maximum connection cross section external ventilator mm2 2 5 Terminal range power cable mm 7 0 13 width across flats 25 Terminal range pilot wires mm 4 5 9 0 width across flats 20 Certifications ...

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