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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 ºC (-22 … +158 ºF) | Operating temperature | 0 … 50 ºC (32 … 122 ºF) | 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) |
SITRANS RD500 Module Specifications| | 8 inputs, 6 solid state outputs | 8 inputs, 6 relay outputs | 8 channel, 4 … 20 mA | 8 channel ± 10 V | 6 channel, RTD | 8 channel thermocouple module |
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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 |
Note: in order to protect plants, systems, machines and networks against cyber threats, it is necessary to implement – and continuously maintain – a holistic, state-of-the-art industrial security concept. Siemens’ products and solutions only form one element of such a concept. For more information about industrial security, http://www.siemens.com/industrialsecurity
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