Transmitter
Quick Reference Instruction Manual
Wiring
IM01U10A00-00EN-R, 2nd edition, 2017-08-29
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7.4.6 Input signals
Active current
input
lin
An individual analog power input is available for external analog devices.
The active current input
lin
is provided for connecting a two-wire transmitter with an out-
put signal of 4 – 20 mA.
Value
Nominal input current
4 – 20 mA
Maximum input current range
2.4 – 21.6 mA
Internal power supply
24 V
DC
±20 %
Internal load resistance Rotamass
≤ 160 Ω
Iin+
Iin-
24 V
ROTAMASS
0 V
1
Fig. 36:
Connection of external device with passive current output
①
External passive current output device
Passive current
input
lin
The passive current input
lin
is provided for connecting a four-wire transmitter with an out-
put signal of 4 – 20 mA.
Value
Nominal input current
4 – 20 mA
Maximum input current range
2.4 – 21.6 mA
Maximum input voltage
≤ 32 V
DC
Internal load resistance Rotamass
≤ 160 Ω
Iin+
Iin-
ROTAMASS
1
Fig. 37:
Connection of external device with active current output
①
External active current output device
