TECSYSTEM CONV 4/420/A, Instruction Manual, Page: 3 / 8

3
CONV 4/420/A - CONV 8/420/A
TECSYSTEM S.r.l ®
1) TECHNICAL SPECIFICATIONS
POWER SUPPLY

Rated voltage 24 VAC-DC ±10%

Vdc with reversible polarities

Highest absorption:

3VA CONV 4/420/A

5VA CONV 8/420/A

COMMUNICATION

Optoinsulated serial for monitoring units
NT935 (Model CONV 4/420/A) and
NT538 (Model CONV 8/420/A)

Highest distance 20 meters with 2x0,5mm
2
shielded cable
INPUTS

Optoinsulated serial input for connection
to NT935 (Mod CONV 4/420/A)

Optoinsulated serial input for connection
to NT538 (Mod CONV 8/420/A)
USCITE

4 4.20mA outputs model CONV 4/420/A

8 4.20mA outputs model CONV 8/420/A
TESTS AND PERFORMANCES

Assembling in accordance with CE rules

Protection against electrical noises CEI-
EN50081-2/50082-2

Dielectric strength 2500 Vca for 1 min-
ute between serial input and 4-20mA
outputs and between serial input and
supply

Current/temperature range:
4.20mA/0-240°C
4.20mA/0-200°C (option)
4.20mA/-40 +200°C (option)
● Accuracy ± 1% full scale value

Ambient operating temperature -20°C to
+60°C

Humidity: 90% no-condensing

ABS self-extinguishing housing NORYL
94VO

Frontal in polycarbonate

Rail DIN mounting

Serial line self-diagnosis circuit

Option
protection treatment of electronic
part
DISPLAYING AND DATA MANAGEMENT

1 green led for power supply line — ON

1 red led to show serial communication
problems — RS
DIMENSIONS

106x90mm DIN43880 – depth 58mm
(on DIN rail)
SOFTWARE RELEASE
V1-R1.4