Mode of operation

Measuring principle

Remote data monitor

Measuring points

• Up to 128 standard inputs (conventional IO, see optional IO modules)
• Addressing for Modbus devices (Modbus RTU and Modbus TCP)

Input

See SITRANS RD500 module specifications table

Output

See SITRANS RD500 module specifications table

Accuracy

See SITRANS RD500 module specifications table

Rated operating conditions

Storage temperature range

-30 … +70 ?C (-22 … +158 ?F)

Operating temperature

0 … 50 ?C (32 … 122 ?F)

Operating and storage humidity

80 % max relative humidity, non-condensing, from 0 … 50 °C (32 … 122 °F)

Design

Material (enclosure)

High impact plastic and stainless steel

Installation category

I

Pollution degree

2

Weight

456.4 g (15.1 oz)

Mounting

Snaps onto standard DIN style top hat (T) profile mounting rails according to EN 50022 – 35 x 7.5 and – 35 x 15

Power

24 V DC ± 10 %

400 mA min. (1 module)

3.5 amps max. (16 modules)

Must use Class 2 or SELV-rated power supply

Display

Status LEDs

• STS - status LED indicates condition of master
• TX/RX - transmit/receive LEDs show serial activity
• Ethernet - link and activity LEDs
• CF - CompactFlash LED indicates card status and read/write activity

Memory

On-board user memory

4 MB of non-volatile Flash memory

On-board SDRAM

2 MB

Memory card

CompactFlash Type II slot for Type I and Type II cards; 1 GB (optional 2 GB)

Certificates and approvals

Safety

• UL listed to U.S. and Canadian safety standards for use in Class I, II, and III, Division 1 and 2 hazardous locations
• CE, RCM

Communication

USB/PG port

Adheres to USB specifications 1.1. Device only using Type B connection.

Serial ports

Format and baud rates for each port are individually software programmable up to 115, 200 baud

RS232/PG port

RS 232 port via RJ12

Comms ports

RS 422/485 port via RJ45 and RS 232 port via RJ12

Ethernet port

10 BASE-T/100 BASE-TX; RJ45 jack is wired as a NIC (Network Interface Card)

Order number

7ML1930-1ES

7ML1930-1ER

7ML1930-1EP

7ML1930-1EQ

7ML1930-1ET

7ML1930-1EU

Application

8 inputs, 6 outputs used to monitor contact or sensor inputs

8 inputs, 6 outputs used to monitor contact or sensor inputs

16 bit analog input module provides high density signal measurement for data monitoring applications and accepts 0/4 … 20 mA process signals

16 bit analog input module provides high density signal measurement for data monitoring applications and accepts ± 10 V process signals

16 bit analog input module provides high-density signal measurement for data acquisition applications and accepts various RTD inputs

16 bit thermocouple input module provides high density signal measurement for data acquisition applications and accepts wide range of thermocouple types

Accuracy

Not applicable

Not applicable

± 0.1 % of span

± 0.1 % of span

± (0.2 % of span, 1 °C) 0 … 50 °C (32 … 122 °F); ± (0.1 % of span, 1 °C) 18 … 28 °C (64 … 82 °F); includes NIST conformity, A/D conversion errors, temperature coefficient and linearization conformity at 23 °C after 20 minutes warm-up

± (0.3 % of span, 1 °C); includes NIST conformity, cold junction effect, A/D conversion errors, temperature coefficient and linearization conformity at 23 °C after 20 minute warm-up

Mounting

Snaps onto standard DIN style top hat (T) profile mounting rails according to EN 50022 – 35 x 7.5 and - 35 x 15

Inputs

Dip switch selectable for sink or source

• Dip switch selectable for sink or source
  max. voltage: 30 V DC, reverse polarity protected
  Off voltage: < 1.2 V
  On voltage: > 3.8 V
• Input frequency:
  - Filter switch on: 50 Hz
  - Filter switch off: 300 Hz

• 8 single-ended
  ranges: 0 … 20 mA or 4 … 20 mA
  resolution: full 16-bit
• Sample time: 50 … 400 ms depending on number of enabled inputs

• 8 single-ended
  ranges: 0 … 10 V DC or ± 10 V DC
  resolution: full 16-bit
• Sample time: 50 … 400 ms depending on number of enabled inputs

• 6 single-ended
  resolution: full 16-bit
• Sample time: 67 … 400 ms depending on number of enabled inputs

• 8 single-ended
  resolution: full 16-bit
• Sample time: 50 … 400 ms depending on number of enabled inputs

Outputs

Solid state output, switched DC, contact rating 1 A DC max.

Form A, NO
pairs share common terminals: 1&, 3&4, 5&6
Current rating by pair: 3 Amps at 30 V DC/125 V AC resistive
1/10 HP at 125 V AC

Not applicable

Not applicable

Not applicable

Not applicable