Overview
SITRANS RD200
SITRANS RD200
1
Overview
The SITRANSRD200 is a universal input, panel mount remote digital
display for process instrumentation.
Benefits
•
Easy setup and programming via front panel buttons or remotely
using RD software
•
Display readable in sunlight
•
Universal input: accepts current, voltage, thermocouple, and RTD
signals
•
Single or dual 24VDC transmitter power supply
•
Serial communication using built in protocol or Modbus RTU
•
Two optional relays for alarm indication or process control applica
tions
•
Linear or square root function supported
•
Meter Copy feature to reduce setup time, cost, and errors
•
RD software supports remote configuration, monitoring, and log
ging for up to 100displays
•
Other features include: 4to20mA analog output option, pump
alternation control, and optional NEMA 4and 4X field enclosures
•
2X option for 30.5mm (1.2inch) high, red LED display
Application
The RD200 is a universal remote display for level, flow, pressure,
temperature, weighing, and other process instruments.
Data can be remotely collected, logged and presented from as many
as 100displays on your local computer using the free downloadable
RD Software.
The display accepts a single input of current, voltage, thermocouple,
and RTD. This makes the RD200 an ideal fit for use with most field
instruments.
The RD200 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, temperature, flow, pressure and weighing
instrument values, PC monitoring, and data logging with RD Soft
ware.
SITRANS RD200 · 4/2024
© Siemens AG 2024
SITRANS RD200
2
Selection and ordering data
Article No.
SITRANSRD200 Display
Remote digital display for process instruments. With 4to20mA, 0to10V, RTD,
and TC inputs and pump control. Panel mount with field mount enclosure options.
7ML5740-
● ● ● ● ● - ● A
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. 1
12...36VDC; 12...24VAC, 6Wmax. 2
Transmitter supply
None A
Single 24VDC transmitter supply
1)
B
Dual 24VDC transmitter supply
1)2)
C
Output
None A
2relays B
4...20mA output C
Communication
ModbusRTU 0
Approvals
Ordinary Locations/General Purpose (Non-Ex), CE, UKCA, UL,
C
UL 1
Display Size
Standard 0
2X option for 30.5mm (1.2inch) high, red LED 1
1)
Available with input voltage option1only.
2)
Available with output optionC only.
Selection and Ordering data Article No
Operating Instructions
All literature is available to download for free, in a range
of languages, at http://www.siemens.com/processinstru
mentation/documentation
Accessories
SITRANSRD200 copy cable 2.1m (7ft)
7ML1930-1BR
SITRANSRD200 RS232 serial adapter
(copycableincluded)
7ML1930-1BS
SITRANSRD200 RS422/485 serial adapter
(copycableincluded)
7ML1930-1BT
RS232 to RS422/485 isolated converter
7ML1930-1BU
USB to RS422/485 isolated converter
7ML1930-1BX
RD200 USB serial adapter
7ML1930-6AH
USB to RS232 converter
7ML1930-6AK
Low cost polycarbonate plastic enclosure for 1display
7ML1930-1CF
2inch (5.08cm) pipe mounting kit (stainlesssteel,
Type304, EN1.4301) only available with 7ML1930-1CF
7ML1930-1BQ
Thermoplastic enclosure
For use with 1display
7ML1930-1CG
For use with 2displays
7ML1930-1CH
For use with 3displays
7ML1930-1CJ
For use with 4displays
7ML1930-1CK
Selection and Ordering data Article No
For use with 5displays
7ML1930-1CL
For use with 6displays
7ML1930-1CM
Stainlesssteel enclosure (Type304, EN1.4301)
For use with 1display
7ML1930-1CN
For use with 2displays
7ML1930-1CP
For use with 3displays
7ML1930-1CQ
For use with 4displays
7ML1930-1CR
For use with 5displays
7ML1930-1CS
For use with 6displays
7ML1930-1CT
Steel enclosure
For use with 1display
7ML1930-1CU
For use with 2displays
7ML1930-1CV
For use with 3displays
7ML1930-1CW
For use with 4displays
7ML1930-1CX
For use with 5displays
7ML1930-1CY
For use with 6displays
7ML1930-1DA
SITRANS RD200 · 4/2024
© Siemens AG 2024
SITRANS RD200
3
Technical specifications
SITRANS RD200
Mode of operation
Measuring principle Analog to digital conversion
Measuring points
•
1instrument
•
Remote monitoring of 100instruments
with PC and RDsoftware
Input
Measuring range
•
Current
•
4…20mA, 0…20mA
•
Voltage
•
0VDC…10VDC, 1…5V, 0…5V
•
Thermocouple temperature
•
TypeJ: ‑50…+750°C (‑58…+1382°F)
•
TypeK: ‑50…+1260°C (‑58…+2300°F)
•
TypeE: ‑50…+870°C (‑58…+1578°F)
•
TypeT: ‑180…+371°C (‑292…+700°F)
•
TypeT, 0.1°resolution: ‑180.0…+371°C
(‑199.9…+700°F)
•
RTD temperature
•
100Ω RTD: ‑200…+750ºC
(‑328…+1382ºF)
Output signal
Output
•
4…20mA (optional)
•
ModbusRTU
Relays 2SPDTFormC relays, rated 3Aat 30VDC
or 3Aat 250VAC, non-inductive, auto-
initializing (optional)
Communications
•
RS232 with PDC or ModbusRTU
•
RS422/485 with PDC or ModbusRTU
Accuracy
4…20mA optional output ±0.1%FS ±0.004mA
Process input ±0.05% of span ±1count, square root:
10…100%FS
Thermocouple temperature input
•
TypeJ: ±1°C (±2°F)
•
TypeK: ±1°C (±2°F)
•
TypeE: ±1°C (±2°F)
•
TypeT: ±1°C (±2°F)
•
TypeT, 0.1°resolution: ±1°C (±1.8°F)
RTD temperature input
•
100Ω RTD: ±1°C (±1°F)
Rated operating conditions
Ambient conditions
•
Storage temperature range ‑40…+85°C (‑40…+185°F)
•
Operating temperature range ‑40…+65°C (‑40…+149°F)
Design
Weight 269g (9.5oz) (including options)
Material (enclosure)
•
1/8DIN, high impact plastic, UL94V-0, col
or: 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
Electrical connection
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 3Aat 250VAC
Power supply
Input voltage option1 85…265VAC, 50/60Hz; 90…265VDC,
20Wmax.
Input voltage option2 12…36VDC; 12…24VAC, 6Wmax.
Transmitter power supply One or two isolated transmitter power
supplies (optional)
•
Single power supply One 24VDC ±10% at 200mAmax.
•
Dual power supplies Two 24VDC ±10% at 200mA and
40mAmax.
Technical specifications (continued)
SITRANS RD200
External loop power supply 35VDCmax.
Output loop resistance
•
24VDC, 10…700Ωmax.
•
35VDC (external), 100…1200Ωmax.
Displays and controls
Display
•
14mm (0.56inch) high LED
•
2Xoption for 30.5mm (1.2inch) high,
redLED
•
Numeric range from ‑1999…+9999
•
Four digits, automatic lead zero blanking
•
Eight intensity levels
Memory
•
Non-volatile
•
Stores settings for minimum of 10years if
power is lost
Programming
•
Primary: front panel
•
Secondary: meter copy or PC with
SITRANSRD software
Certificates and approvals CE, UKCA, UL,
C
UL
Options
Enclosures Plastic, steel, and stainlesssteel (Type304,
EN1.4301) NEMA4 and 4X enclosures
Mounting
•
2inch (5.08cm) pipemounting kit
(zincplatedseal)
•
2inch (5.08cm) pipe mounting kit (stain
lesssteel, Type304, EN1.4301)
SITRANS RD200 · 4/2024
© Siemens AG 2024
SITRANS RD200
4
Dimensional drawings
Screw terminal
connector
[0.5 Nm (4.5 lb-inch)
tightening torque]
RD200 - top viewRD200 - side view
64 (2.5)
119 (4.68)
92
(3.61)
91 (3.6)
62 (2.45)
15
(0.59)
81 (3.2)
45
(1.76)
SITRANSRD200, dimensions in mm (inch)
Circuit diagrams
RD200 connector labeling
2-wire
4 ... 20 mA
transmitter
P2+P1+ P1- P2-1+
234 156
1-
SERIALSIGNAL
P-P+
12
Relay 2 Relay 1
COMNCNCNO NOCOM
POWER24V OUT
Remote display,
chart recorder
24 V outmA out
RTD
sensor
Switch
position
Switch
position
Signal connector Signal connector Signal connector
4 ... 20 mA output and input signal powered by meter
Three-wire RTD
input connections
Thermocouple
input connections
RTD TC RTD TC
5
4321 54321
TC
COMT+EXCmA+V+ COMT+EXCmA+V+
54321
COMT+EXCmA+V+
54321
COMT+EXCmA+V+
+ -
+
-
+ -
+ -
RTD TC
121256 34
RTD
TC
SWITCH
SITRANSRD200 connections
SITRANS RD200 · 4/2024
© Siemens AG 2024