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10.3
Outputting an analog signal
Outputting the motor current with the help of an analog signal
The motor current measured by the microprocessor can be output in the form of an analog signal
DC 4 mA to 20 mA for activating three-phase permanent-magnet moving-coil instruments or
supplying analog inputs of programmable controllers. The output value always indicates the
maximum value of the three phases. Transfer of the current values via IO‑Link is represented in
Chapter "Process image of outputs (PIQ) and inputs (PII) (Page 61)". The analog values of the 3
phases can be read out in detail via data set "Measured value - data set (index) 94 (Page 123)".
Example of recording the analog value
Output current range: 4 ... 20 mA
Increment: 1 % x I
24 mA
20 mA
16.8 mA
16 mA
12 mA
8 mA
4 mA
0 mA
0%xI
Figure 10-5
Example:
Output analog value I
I
motor
Table 10-2
Feature
Maximum output current
Terminals
Maximum load
Accuracy
Short-circuit-proof and open circuit-proof
SIRIUS 3RB24 electronic overload relay for IO-Link
Equipment Manual, 07/2022, NEB969165602000/RS-AA/003
= 0.128 mA
e
20%xI
40%xI
60%xI
e
e
e
e
Recording the analog value
= 10.40 mA; set motor current I
out
= ((10.40 mA - 4 mA) x 6 A) / 12.8 mA = 3 A
Example
80%xI
100%xI
e
e
Value
20 mA
I(+) and I(-)
100 Ω
+ / - 5 %
Yes
10.3 Outputting an analog signal
= 6.0 A
e
Operation
87
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