WMB Analog Input Modbus Output Modeule

 

WMB
Analog Input Modbus Output Module

Features
Input Specification
RS-485 Specification
Standard Specification

 

8ch input of DC voltage / current
RS-485 Modbus (RTU) compatible
Zero span adjustment and low cut setting by RS-485
Baud rate and Node address setting by front switch
Easy maintenance by removable terminal block from body


Input specification

 

Input signal

 DC voltage / current

Number of input (WMB-AI8)

8

Number of input (WMB-MAI6)

6 : 3ch Analog, 3ch RTD input

Input Configuration

Single ended

A/D conversion

Delta Sigma Conversion

Sampling rate

Approx. 150ms/1ch

Allowable input

±0.1% Full scale

Influence of ambient temperature

±0.01% Full scale per °C

Input common

1 common for each input

Setting

Span/Zero adjustment, Simulated input,
Low cut (Setting by RS-485)


 

 

 

 

RS-485 specification

 

Standard

Conform to RS-485

Baud rate

4800/9600/19200/38400 bps
(Selected by DIP switch)

Terminal resistance

Approx. 120Ω (Standard accessory)

Max. No. of connection

31

Node address

1 to 99 (Setting by Rotary switch)

Transmission distance

Approx. 500m or less
(Depends on connection device)

Communication form

1 : N communication

Protocol

Modbus (RTU) protocol


 

 

 

 

 

 

Standard specification

 

Power supply

24V DC ±10%

Power consumption

Less than 50mA max.

Operation temperature/humidity

-5 to 55°C, 90% (non-condensing)

Storage temperature/humidity

-20 to 60°C, 90% (non-condensing)

Warm-up time

30 min

Dielectric strength

1500V AC per 1 min : Between Power

Insulation resistance

500Vdc, 100MΩ or more

Dimensions

65 (W) x 110 (H) x 48mm (D) DIN size

Weight

Approx. 220g

Connection

M3 screw terminal block (removable),
14P, 10P (Tightening torque 0.5N-m)

Mounting

DIN rail or wall surface