Operating Principle - Datcon DT4220 E Series Operating Instructions Manual

DT4220 E
Area of application
20180619-V0

3.3. Operating principle

The DT4220 xx xx xx (PS) Process Indicator enable process variable
0-20 mA, 4-20 mA, 0-10 V, 0-5 V, 2-10 V to be displayed in
engineering units ont he control panel.
Any optional display range can be assigned to the input signal range.
Large 5 digit, 14.2 mm height LED display make process value easily
visible at a distance.
Options:
RL2
Two normally open relay contacts (SPST) for limit switching or for
simple control tasks.
IA / IP
4-20 mA / 0-20 mA galvanic isolated scaleable analogue output. The
output can be active (A) or passive (P).
TS
Galvanic isolated power supply output for 2, 3 or 4 wires transmitter.
RS2
RS232 galvanic isolated communication output with MODBUS RTU
slave protocol. Only one instrument can be connected to the one
RS232 connector of PLC or to the computer.
RS4
RS485 galvanic isolated communication output with MODBUS RTU
slave protocol. 32 instruments can be connected to one RS485
connector of the PLC or to the computer.
Note: only one in five (IA, IP, TS, RS2, RS4) option can be
implemented at the same time. The option RL2 always can be
implemented independently another option.
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