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Inverter operation using analog set value
Connection diagram
Motor thermistor
(PTC)
Set value
(4...20mA)
Configuration of parameters
Function
A 01
A 02
F 02
F 03
C 01
C 02
C 03
C 05
Function description
The inputs 1 and 2 are used exactly the way as described in the previous example.
Digital input 3 (configured as AT) can be used to switch from voltage set value (0–
10V) to current set value (4–20mA). If none of the digital inputs has been configured
as AT then the voltage set value present on terminal O and the current set value
present on terminal OI will be added.
Instead of a fixed wiring or one that uses a switch connected to terminal 3 function
A 13 can be set to 01 (digital input 3 will then be configured as normally closed
contact).
This wiring example also incorporates a thermal motor protection using a thermistor.
It is important here that a screened control cable is used and that the thermistor
cables are installed at a safe distance from the motor cables. However, the screening
must only be grounded on the inverter side.
L
5
4
3
H
O
OI
L
FM
Configurable
parameters
01
01
Running command using terminals FW/RV
10
10
00
FW: Forward running command on digital input 1
01
RV: Reverse running command on digital input 2
16
AT: Use current input for set value (4 – 20mA)
19
2
1
P24
CM2
12
11
Description
Set value input using control terminals
Acceleration time in s
Deceleration time in s
PTC: Thermistor on digital input 5
12-2
Chapter 12 – Wiring examples
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