VS-DAIO: Analog and Digital Expansion Module

Expand the number of discrete I/O points of your SCADA Servers and Web Servers

VS-DAIO

The VS-DAIO is a multi-purpose expansion module that can be connected via a RS485 Modbus RTU Master to add the following inputs and
outputs:

  • 2 Voltage (0-10V) / Current (0/4-20mA) Inputs
  • 2 RTD Inputs (2- or 3-wire, PT100, Ni120, PT1000, Ni1000, Resistance)
  • 1 Voltage (0-10V) or Current (0-20mA) Output
  • 4 Digital Inputs
  • 2 Digital Outputs

User Manual (PDF 1.2 MB)

Call us for pricing and delivery

Specifications

Serial Baud Rate / Ports

2400 - 115.2 kbit/s / RS485

Connectors

4 and 18 screw terminal connector
Digital Inputs

Number of Inputs

4

Input Voltage Range

10 - 26 VDC

Input Current per Input

4mA@12VDC / 8mA @24VDC
Digital Outputs

Number of Outputs

2

Maximum Voltage

36 VDC

Maximum Current

100mA per Output

VceOn

1.1 V Max.
Analog Inputs

Number of Inputs

2 (Voltage or Current)

Input Voltage

0 - 1 VDC or 0 - 10 VDC

Input Resistance

190K Ohm

Resolution

12 bits

Drift

100ppm/°C

Accuracy

0.2% of span

Isolation

1000Vrms between field and logic

Input Current

0 - 20mA

Input Resistance

250 Ohm

Resolution

12 bits

Drift

100ppm/°C

Accuracy

0.2% of span

Isolation

1000Vrms between field and logic
Analog Outputs

Number of Outputs

1, Voltage or Current

Output Voltage

0 - 10V

Resolution

12 bits

Drift

100ppm/°C

Accuracy

0.5% of span

Output Current

0(4) - 20mA

Resolution

12 bits

Drift

100ppm/°C

Accuracy

0.5% of span

Compliance

1000 ohms max. @ 24VDC, 500 ohms max. @ 12VDC
RTD Inputs

Number of Inputs

2

RTD Configuration

2- or 3-wire

RTD Types

PT100 / Ni120 / PT1000 / Ni1000 / Resistance (2 or 3 Wire)

Resolution

0.1°C

Drift

100ppm/°C Typical

Line resistance effect

< 0.1°C balanced < 0.1°C balanced

Max. line resistance

100 Ohms

Isolation

1500Vrms between field and logic

Counters

On digital inputs 1 through 4

Resolution

32 bits

Frequency

50 Hz (max)

Pulse Width

20 ms (min)

Dimensions

0.91" x 4.3" x 3.9" (23 x 109 x 98mm)

Operating Temperature

-14°F to +122°F / -10°C to +50°C

Protocols

Modbus RTU

Power Supply

24 VDC

Mounting

DIN Rail

Certification

CE

Power consumption

1.5 W

Ordering Part Number

VS-DAIO