© Siemens AG 2016 Supplementary Components Displays SITRANS RD300 ■ Overview ■ Application The RD300 is a remote display for level, flow, pressure, weighing, and other process instruments. This display also acts as a multi-purpose, easy to use rate/totalizer ideal for flow rate, total, and control applications. Data can be remotely collected, logged and presented on your local computer using the free downloadable RD Software. The display accepts a single or dual input of current and voltage. This makes the RD300 an ideal fit for use with most field instruments. The SITRANS RD300 is a panel mount remote digital display for process instrumentation and acts as a multi-purpose, easy to use, rate/totalizer ideal for flow rate, total, and control applications. ■ Benefits 7 • Easy setup and programming via front panel buttons or remotely using RD software • Display readable in sunlight • Input: accepts current and voltage • Single or dual 24 V DC transmitter power supply • Serial communication using built in protocol or Modbus RTU • Supports up to 8 relays and 8 digital I/O for process control and alarming • 32-Point linearization, square root or exponential linearization • Multi-pump alternation control • Supports total, grand total or non-resettable grand total • 9-digit totalizer with total overflow feature • Large dual-line, 6-digit display • Configure, monitor, and datalog from a PC • Dual-input option with math functions: addition, difference, average, multiplication, division, minimum, maximum, weighted average, ratio, concentration 7/16 Siemens FI 01 · 2016 The RD300 can be set up as a standard panel mount, or combined with optional enclosures to allow it to house up to 6 displays. • Key Applications: tank farms, pump alternation control, local or remote display of level, flow, pressure and weighing instrument values, PC monitoring and data logging with RD Software. © Siemens AG 2016 Supplementary Components Displays SITRANS RD300 ■ Technical specifications Mode of operation Electrical connection Measuring principle Analog to digital conversion Measuring points 1 or 2 instruments mA output signal 2-core copper conductor, twisted, shielded, 0.82 ... 3.30 mm² (18 ... 12 AWG), Belden 8 760 or equivalent is acceptable Electrical connection and relay connection Copper conductor according to local requirements, rated 3A at 250 V AC Input Measuring range • Current 4 ... 20 mA, 0 ... 20 mA • Voltage 0 V DC ... +10 V DC, 1 ... 5 V, 0 ... 5 V Power supply Input voltage option 85 ... 265 V AC, 50/60 Hz; 90 ... 265 V DC, 20 W max. or jumper selectable 12/24 V DC ± 10 %, 15 W max Transmitter power supply Terminals P+ & P-: 24 V DC ± 10 %, 12/24 V DC powered models selectable for 24, 10, or 5 V DC supply (internal jumper J4), 85 ... 265 V AC models rated at 200 mA max, 12/24 V DC powered models rated at 100 mA max, at 50 mA max for 5 or 10 V DC supply. External loop power supply 35 V DC max. Output loop resistance • 24 V DC, 10 ... 700 max. Output signal Output • 4 ... 20 mA (optional) • Modbus RTU Relays 2 or 4 SPDT (Form C) internal and/or 4 SPST (Form A) external; rated 3 A at 30 VDC and 125/250 VAC resistive load; 1/14 HP (50 W) at 125/250 V AC for inductive loads (optional) Communications • RS 232 with Modbus RTU • RS 422/485 with Modbus RTU Accuracy 4 ... 20 mA optional output ± 0.1 % FS • 35 V DC (external), 100 ... 1 200 max. ± 0.004 mA Process input ± 0.05 % of span ± 1 count, square root: 10 ... 100 % FS Rated operating conditions Displays and controls Main display 0.6 inch (15 mm) high, red LEDs Second display 0.46 inch (12 mm) high, red LEDs, 6-digits: each (-99 999 ... 999 999) Memory • Non-volatile Ambient conditions • Storage temperature range -40 ... +85 °C (-40 ... +185 °F) • Operating temperature range -40 ... +65 °C (-40 ... +149 ºF) • Stores settings for minimum of 10 years if power is lost Design Weight 269 g (9.5 oz) (including options) Material (enclosure) • 1/8 DIN, high impact plastic, UL94V-0, color: gray • Optional plastic, steel and stainless steel (Type 304, EN 1.4301) NEMA 4 enclosures Degree of protection Type 4X, NEMA 4X, IP65 (front cover); panel gasket provided Programming • Primary: front panel • Secondary: Meter Copy or PC with SITRANS RD Software Certificates and approvals CE, UL, CUL Options Enclosures Plastic, steel and stainless steel (Type 304, EN 1.4301) NEMA 4 and 4X enclosures Siemens FI 01 · 2016 7/17 7 © Siemens AG 2016 Supplementary Components Displays SITRANS RD300 Selection and Ordering data Article No. Selection and Ordering data SITRANS RD300 Dual line Remote digital display compatible with PI instruments 7ML5744- Other Operating Instructions 7 7 7 7 7 - 00 A SITRANS RD DIN-Rail Mounting Kit, English A5E31979181 SITRANS RD DIN-Rail Mounting Kit, German A5E31979184 SITRANS RD Expansion Modules, English A5E31979173 SITRANS RD Expansion Modules, German A5E31979176 SITRANS RD Serial Communications Accessories, English A5E31979195 SITRANS RD Serial Communications Accessories, German A5E31979197 Click on the Article No. for the online configuration in the PIA Life Cycle Portal. Input voltage 85 ... 265 V AC, 50/60 Hz; 90 ... 265 V DC, 20 W max. 12 ... 36 V DC; 12 ... 24 V AC, 6 W max. Output None 2 Relays 4 Relays 4 ... 20 mA output 2 Relays and 4 ... 20 mA output 4 Relays and 4 ... 20 mA output 2 A B C D E F Type Single input process and flow rate/totalizer Mtr Dual input process Mtr Display Standard SunBright Accessories A B 0 1 Approvals UL, C-UL and CE 0 Article No. Selection and Ordering data Operating Instructions Single input process and flow rate/totalizer Mtr English German Dual input process Mtr English German A5E31917845 A5E31948919 A5E33481367 A5E33481387 DIN-Rail Mounting Kit 7ML1930-6AB 4 Relays Expansion Module 7ML1930-6AC 4 Digital I/O Module 7ML1930-6AD Dual output 4 ... 20 mA expansion module for dual input meter 7ML1930-6AP Meter Copy Cable 7ML1930-6AE RS 232 Serial Adapter 7ML1930-6AF RS 422/485 Serial Adapter 7ML1930-6AG RD300 USB Serial Adapter 7ML1930-6AJ USB to RS 232 Converter 7ML1930-6AK Snubber 7ML1930-6AL Plastic enclosure For 1 meter 7ML1930-6AM For 2 meters 7ML1930-6AN For 4 meters 7ML1930-1CK For 5 meters 7ML1930-1CL For 6 meters 7ML1930-1CM Note: The operating instructions should be ordered as a separate line on the order. All literature is available to download for free, in a range of languages, at http://www.siemens.com/ processinstrumentation/documentation This device is shipped with the Siemens Level and Weighing manual DVD containing Quick Starts and Operating Instructions. ■ Dimensional drawings NO NC C NO NC C - + R Optional connectors installed 44.5 (1.76) NO NC C NO NC C 7 1 Article No. 62 (2.45) 106 (4.17) 121 (4.77) 15 (0.59) 128 (5.05) 91.5 (3.61) 152 (6) Clearance 119 (4.68) SITRANS RD300, dimensions in mm (inch) 7/18 Siemens FI 01 · 2016 © Siemens AG 2016 Supplementary Components Displays SITRANS RD300 ■ Schematics Connector labeling for fully loaded single input meter RELAY4 RELAY3 RELAY2 RELAY1 MA OUT 6 5 4 3 2 1 6 5 4 3 2 1 3 2 1 NO NC C NO NC C NO NC C NO NC C I- I+ R P+ P- F4 COM V+ mA+ 1 2 3 4 5 6 1 2 3 4 5 6 7 8 SIGNAL DW1815 M-LINK + - 1 2 POWER Transmitter powered by external supply or self-powered INPUT SIGNAL INPUT SIGNAL P+ P- F4 COM V+ mA+ P+ P- F4 COM V+ mA+ 1 2 3 4 5 6 1 2 3 4 5 6 + + External power supply - - 2-Wire 4 ... 20 mA transmitter + 2-Wire 4 ... 20 mA self-powered transmitter Transmitter powered by internal supply INPUT SIGNAL P- F4 COM V+ mA+ P+ P- F4 COM V+ mA+ 1 2 3 4 5 6 1 2 3 4 5 6 + 7 INPUT SIGNAL P+ + - - Signal 3-Wire 4 ... 20 mA transmitter 2-Wire 4 ... 20 mA transmitter Voltage Input Connections INPUT SIGNAL INPUT SIGNAL P+ P- F4 COM V+ mA+ P+ P- F4 COM V+ mA+ 1 2 3 4 5 6 1 2 3 4 5 6 - + Voltage signal + - Signal 3-Wire voltage transducer SITRANS RD300 connections Siemens FI 01 · 2016 7/19