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VFC 3210
Control terminals description
Digital inputs
Terminal
Signal function
Multi-function
X1...X4
digital inputs
SC
Shared connection
+24 V
Power supply for
COM
digital inputs
Analog inputs
Terminal
Signal function
Power supply for
+10 V
analog inputs
Analog voltage input /
AI
Analog current input
GND
Shared connection
Shielding connection
DOK-RCON04-VFC3210****-IT01-EN-P
Description
See Group E1
Shared connection for isola-
tion opto-electric couplers
COM is reference
Isolated from GND
Description
GND is reference
Analog voltage / current in-
puts are used as external fre-
quency setting channels
To switch between voltage
and current or to set the input
related functions, see Group
E1
Isolated from COM
Connected with grounding
terminals on heatsink inter-
nally
Bosch Rexroth AG
Frequency Converter Wiring
Signal requirement
Inputs via opto-electric couplers:
24 VDC, 8 mA / 12 VDC, 4 mA
ONLY positive of power supply
can be connected
50 mA, +15%...-10%
Signal requirement
Max. output current: 30 mA
Voltage input range: 0 / 2...10 V
Input impedance: 40 kΩ
Resolution: 1/1,000
Current input range: 0 / 4...20
mA
Input impedance: 500 Ω
Resolution: 1/1,000
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