Ti 072R - Axon Automation Inc.
Technical
Information
TI 072R/24/ae
Process Transmitter
RMA 422
Multi-functional 1 - 2 channel top hat DIN rail
unit with loop power supply, alarm set point
monitoring, mathematics function and 1 - 2
analog outputs
Application Areas
• Plant and machine construction
• Control panels
• Laboratory fittings
• Temperature display and monitoring
• Process display and monitoring
• Process control
• Signal match and transforming
• Signal doubling
Features and Benefits
• Flexible:
1 or 2 current inputs with switchable
linearization and square root
extraction
• Powering:
Integrated loop power supply for
connected sensors and transmitters
• Calculating:
Creating new process measurement
results using addition / subtraction /
multiplication of the two input signals
• Alarm:
Flexible set point monitor with two
SPDT alarm relay contacts
• Active:
Adjustable current or voltage analog
output
• Communication:
RS-232 interface for setting up and
for measured value output HART® communication ports for
sensor set up
• Operation:
LC display and push buttons for local
set up
The Power of Know How
Application areas
Process transmitter
Universally presettable current signal monitoring and
transmission unit for pressure, level, flow and
temperature systems
Operation and system construction
Principle
The current signals connected to the analog inputs are
digitized and converted into process units. Using the basic
mathematics modes of addition / subtraction / multiplication,
further process values are calculated using the original
two input process values. Digital/analog convertors make
two proportional current or voltage signals available for
additional equipment connected to the two analog outputs.
LC display and alarm set point monitor enhance the system.
Microcontroller controlled measurement system with LC
display, analog inputs/outputs, alarm relays and loop
power supply including HART® communication connection.
Measurement system
Inputs
Outputs
Measurement range
Scale
Offset
Signal damping
Number of inputs
Isolation voltage
Linearization
Integration time
Current: 0/4 to 20 mA, maximum current ± 150 mA
(without damage). Ri = 5Ω
-19999 to +99999, 0 to 4 decimal places
-19999 to +99999, 0 to 4 decimal places
Low pass, filter constant 0 to 99 seconds
Maximum 2
90 V AC/DC between inputs
Possible using maximum 20 points per analog input
1000 ms for 2 channels
Loop power supply
Output signal
Communication resistance
Number of outputs
Galvanic isolation
17.0 to 19.7 V, 25 mA, Umax = 27.3 V
HART® communication resistor is built in
Maximum 2
To all other current circuits
Analog
Output signal
Voltage
Current
Signal source
Scale / zoom
Number
Fault conditioning
Response time
D/A resolution
Galvanic isolation
0/4 to 20 mA, 20 to 4/0 mA, or 0 to 10 V, over range +10%
Maximum load, 20 mA
Resistance maximum 500 Ω
Input 1, Input 2, mathematic process values
Presettable between 0 and 100% of the signal source
Maximum 2
Presettable 3.5 mA or 22 mA, reaction to NAMUR NE43
recommendation
Maximum 200 ms (input signal rise from 10% to 90% FSD)
Current, 13 bit; Voltage, 13 bit
To all other current circuits
Relays
Output signal
Number
Contact type
Contact load
Binary, switch on reaching alarm set point
Maximum 2
1 potential free SPDT contact
< = maximum 250 VAC, 5 A / 30 VDC, 5 A
Alarm set point function
Operating mode
Switch threshold
Hysteresis
Time delay
Signal source
Number
Display
Scan rate
Off, min. safety, max. safety, rate of change, alarm
-19999 to +99999
-19999 to +99999
0 to 99 seconds
Input 1, Input 2, mathematic process value
2
1 yellow LED per set point, optional symbols in the LCD
100 ms
2
Mathematics function
On the “2 analog input version”, the two input measured process values can be combined
using three basic mathematics functions (addition, subtraction, multiplication) resulting in a
further calculated value:
Math. Process value = [(factor 1 x input 1) operator (factor 2 x input 2)] + offset
An increase in performance can be seen in the weighting of the two input values using
presettable factors. The new calculated mathematic process value is available in the unit
for further processing
Operator
Addition, subtraction, multiplication
Factor 1, 2
-19999 to +99999, 0 to 4 decimal places
Input 1, 2
Dependent on the selected input values
Offset
-19999 to +99999, 0 to 4 decimal places
Outputs (con’t.)
Linearization / square root extraction
A non linear connection between input signals and process values can be corrected using
20 presettable linearization points per input signal and the ‘mathematical process value’. The
input signal square root curve is already in the unit and only needs to be activated. The
calculated process values are available in the unit for processing.
Electrical connections
N / L-
N for AC, L- for DC
101
- Signal ground transmitter 1
+ Current signal 0/4 to 20 mA
- Current signal 0/4 to 20 mA
102
Power supply
Terminals are internally linked
and can be used as support
for series connection.
Analog input 1
90 to 253 VAC
50/60 Hz
201
+ Power supply transmitter 1
- Signal ground transmitter 2
+ Current signal 0/4 to 20 mA
202
- Current signal 0/4 to 20 mA
203
+ Power supply transmitter 2
41
Normally closed
Common
(same connection as relay 1)
Normally open
Relay output 1
(optional)
Relay output 2
(optional)
53
Normally closed
Common
(same connection as relay 1)
Normally open
131
Output +
current, voltage
132
Output -
current, voltage
231
Output +
current, voltage
232
Output -
current, voltage
103
42
43
51
52
®
HART - communication to
HART 1
SMART - transmitter 1
®
HART - communication to
®
HART 2
SMART - transmitter 2
Connections for setting up and
RS 232
measured value readout (PC - setting
up software)
®
Power supply
L/L+
N/L-
201
202
203
L for AC, L+ for DC
101
102
103
L / L+
In and outputs
18 to 36 VDC,
24 VAC 50/60 Hz

HART
connections
Analog input 2
(optional)
Analog output 1
(optional)
Relays (Internal circuit)
Relay 1
Relay 2
53 52 51
43 42 41
Contact condition shown in alarm or power down
Analog outputs (Internal circuit)
RS 232
connection
+
Analog output 2
(optional)
-
+
+
Output 2
131
Serial interface
L+/L L-/N
132
231
43 42 41
Active current source 0/4 to 20 mA (e.g. transmitters
with their own power supply
53 52 51
-
201 202 203
101 102 103
Loop powered 2-wire transmitter using an external
power supply.
+
Y
- I
+
Loop powered 2-wire transmitter using the internal
loop power supply.
Y
Y I
Y I
- I
-
-
-
-
+
Analog
Input 2
Analog
Input 1
+
232
The analog outputs can be set up as either
current or voltage sources.
+
+
-
+
Output 1
Communication
sockets
Communication
sockets (optional)
131
132
231
232
Terminal layout
Analog
Input 1
201 202 203
Analog
Input 1
Analog
Input 2
+
Analog
Input 2
101 102 103
101 102 103
-
+
201 202 203
The HART® programming unit for setting up
sensors can be directly connected to the unit using
the front mounted communication sockets without
the need for any further wiring.
NOTE: Refer to the operating manual for
safety instructions before installing.
Power supply
90 to 253 VAC, 50/60 Hz; 18 to 36 VDC;
20 to 28 VAC, 50/60 Hz
11.0 VA
Slow blow 250 mA (90 to 253 V), slow blow 630 mA
(20 to 28 V)
Power consumption
Fuse
3
Accuracy
Current
0.1% of FSD
Temperature drift: 0.05% / 10 K ambient temperature
0.1% of FSD
Temperature drift: 0.05% / 10 K ambient temperature
Analog output
Installation conditions
Installation angle
No limit
Ambient conditions
Ambient temperature
Storage temperature
Climatic class
Ingress protection
0° to +140°F (-20° to +60°C)
-20° to +155°F (-30° to +70°C)
To IEC 60 654-1 Class B2
NEMA 1 (IP 20)
EMC/immunity
RF protection
To CISPR (to EN 55011 Group 1, Class A)
Safety
Normal
To IEC 61010-1, overvoltage category II, installation
excess current protection ≤ 10 A
Immunity
Power failures
Power up current limit
Electromagnetic fields
Burst (supply)
Burst (signal)
Surge (AC supply)
Surge (DC supply)
Surge (signal)
Cable high frequency
Common mode noise rejection
Mechanical construction
Normal mode noise rejection
20 ms; no interference
Imax / In <= 15 T50%≤ 50 ms
To IEC 61000-4-3, 10 V/m
To IEC 61000-4-4, 2 kV
To IEC 61000-4-4, 1 kV (A), 2 kV (B)
To IEC 61000-4-5, sym. 1 kV, unsym. 2 kV
To IEC 61000-4-5, sym. 1 kV, unsym. 2 kV
To IEC 61000-4-5, unsym. 1 kV
To IEC 61000-4-6, 10 V
To IEC 770, 110 dB at 250 VAC, 50/60 Hz no influence on
peaks of 275 VAC, 50/60 Hz
> 50 dB at 50/60 Hz
Type
Dimensions
Housing for mounting on DIN rail to EN 50 022-35
Dimensions are in inches (mm)
4.41"
(112)
1.77"
(45)
3.78"
(96)
4.25"
(108)
Weight
Materials
Electrical connections
< 1 lb (approximately 0.29 kg)
Housing, plastic PC/ABS, UL 94V0
Keyed plug-in screw terminals, 16 AWG (1.5 mm2) solid
core, 18 AWG (1.0 mm2) stranded with ferrule
4
Display and operation
Display
LED: Operation, 1 green; fault condition, 1 red; limit
condition, 2 yellow
LC display, optional; 5 x 7 segment numeric display; alarm
set point condition, 2 per channel number, 4 x 1 segment
Display range
-19999 to +99999
Offset
-19999 to +99999
Operation
3 push buttons, - / + / E
Interface
RS 232, 3.5 mm jack plug socket in housing front panel
Remote operation
Using ReadWin 2000 PC software, MS-Windows® 95/98/
2000/NT/XP/CE
In normal operation, the LC display indicates the process value. The preset process
parameters can be adjusted on the front panel in the LC display during operation without the
need for further operating tools. A presettable security code locks out the unit from
unauthorized parameter changes.
HART®
Communication
Sockets
5-digit LCD with Set
Point
Indication (optional)
LED’s
- Operation display
- Fault display
- Alarm relay
condition
(relays optional)
Enter Push Button
RS 232
Interface
Connection
Certificates and approvals
Operating Push
Buttons
(optional)
CE mark
CSA genral purpose
Hazardous protection
Analog input connection values
Peak values
Supplemental documentation
Operating manual
ATEX safety instructions
5
89/336/EWG and 73/23/EWG guide lines
C22.2 No. 142
ATEX II (1) GD [EEx ia] IIc PBT 00 ATEX 2065
Maximum connection values for the analog inputs
inductance and capacitance
EEx ia
IIC
IIB
IIA
C0 ≤ 88 nF
C0 ≤ 683 nF C0 ≤ 2280 nF
L0 ≤ 4.8 mH
L0 ≤ 18.0 mH L0 ≤ 39.1 mH
Internal inductance and internal capacitance are so small
that they are negligible
Open circuit voltage: U0 ≤ 27.3 V
Short circuit current: I0 ≤ 90.4 mA
Power consumption: P0 ≤ 617 mW
BA 103R/09/en
XA 003R/09/en
Ordering Information
RMA 422 process transmitter
1
2
3
4
5
6
7
RMA 422 1
2
3
4
5
6
7
Certification
A Non-hazardous area version
B ATEX II (1) GD [EEx ia] IIC
Power supply
1 90 to 253 VAC, 50/60 Hz
2 18 to 36 VDC; 20 to 28 VAC, 50/60 Hz
Input
1 1 signal input, 0/4 to 20 mA with loop power supply
2 2 signal input, 0/4 to 20 mA each with loop power
supply and signal combinations E1 + E2, E1 - E2,
E1 x E2
Display and operation
A 5-digit LCD with 3 push button operation
B Without LCD, set-up using RS 232 *
(RMA 422A-VK accessory required)
Analog output
1 Analog output not required
2 1 analog output, 0/4 to 20 mA / 0 to 10 V
3 2 analog outputs, 0/4 to 20 mA / 0 to 10 V
Alarm relays
1 Relays not required
2 2 alarm relays each with 1 SPDT relay contact
Model
A Standard
B Factory calibration certificate
* RMA 422 - _ _ _ B 1 1 _ (combination not possible)
6
Accessories
PC software with connection cable, 3
feet (1 m), with 9 pin Sub D connector
and 3.5 mm stereo plug for unit set up
Part No. RMA421A-VM
NEMA 4X (IP 66) field mounting protective housing
Part No. RMA421A-VN
7
For application and selection assistance,
in the U.S. call 888-ENDRESS
For total support of your installed base, 24 hours
a day, in the U.S. call 800-642-8737
Visit us on our web site, www.us.endress.com
United States
Canada
Mexico
Endress+Hauser, Inc.
2350 Endress Place
Greenwood, IN 46143
Phone: (317) 535-7138
888-ENDRESS
FAX: (317) 535-8498
Endress+Hauser
Canada Ltd.
1440 Graham’s Lane
Unit 1, Burlington
ON, L7S 1W3
Phone: (905) 681-9292
800-668-3199
FAX: (905) 681-9444
Endress+Hauser
Paseo del Pedregal No. 610
Col. Jardines del Pedregal
01900, Mexico D.F.
Mexico
Phone: (525) 568-2405
FAX: (525) 568-7459
Endress+Hauser
The Power of Know How
TI 072R/24/ae/04.03
© 2003 Endress+Hauser, Inc.
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