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 Measurement system 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. Inputs Outputs Measurement range Current: 0/4 to 20 ma, maximum current ± 150 ma (without damage). R i = 5Ω Scale -19999 to 99999, 0 to 4 decimal places Offset -19999 to 99999, 0 to 4 decimal places Signal damping Low pass, filter constant 0 to 99 seconds Number of inputs Maximum 2 Isolation voltage 90 V AC/DC between inputs Linearization Possible using maximum 20 points per analog input Integration time 1000 ms for 2 channels Loop power supply Output signal 17.0 to 19.7 V, 25 ma, U max = 27.3 V Communication resistance HART communication resistor is built in Number of outputs Maximum 2 Galvanic isolation To all other current circuits Output signal 0/4 to 20 ma, 20 to 4/0 ma, or 0 to 10 V, over range 10% Voltage Maximum load, 20 ma Current Resistance maximum 500 Ω Signal source Input 1, Input 2, mathematic process values Scale / zoom Presettable between 0 and 100% of the signal source Number Maximum 2 Fault conditioning Presettable 3.5 ma or 22 ma, reaction to NAMUR NE43 recommendation Response time Maximum 200 ms (input signal rise from 10% to 90% FSD) D/A resolution Current, 13 bit; Voltage, 13 bit Galvanic isolation To all other current circuits Relays Output signal Binary, switch on reaching alarm set point Number Maximum 2 Contact type 1 potential free SPDT contact Contact load < = maximum 250 VAC, 5 A / 30 VDC, 5 A Alarm set point function Operating mode Off, min. safety, max. safety, rate of change, alarm Switch threshold -19999 to 99999 Hysteresis -19999 to 99999 Time delay 0 to 99 seconds Signal source Input 1, Input 2, mathematic process value Number 2 Display 1 yellow LED per set point, optional symbols in the LCD Scan rate 100 ms 2
I - I - Outputs (con t.) 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 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 L / L N / L- 101 102 103 201 202 203 41 42 43 51 52 53 131 132 231 232 Terminal layout L for AC, L for DC N for AC, L- for DC - Signal ground transmitter 1 Current signal 0/4 to 20 ma - Current signal 0/4 to 20 ma Power supply transmitter 1 - Signal ground transmitter 2 Current signal 0/4 to 20 ma - Current signal 0/4 to 20 ma Power supply transmitter 2 Normally closed Common (same connection as relay 1) Normally open Normally closed Common (same connection as relay 1) Normally open Output current, voltage Output - current, voltage Output current, voltage Output - current, voltage 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) In and outputs Power supply input 1 input 2 Relay output 1 Relay output 2 output 1 output 2 Communication sockets Communication sockets Serial interface HART connections RS 232 connection 131 101 102 103 132 231 232 201 202 203 43 42 41 Power supply L/L N/L- 90 to 253 VAC 50/60 Hz Relays (Internal circuit) Relay 1 Relay 2 43 42 41 53 52 51 Contact condition shown in alarm or power down outputs (Internal circuit) - - Output 1 Terminals are internally linked and can be used as support for series connection. 18 to 36 VDC, 24 VAC 50/60 Hz 131 132 Output 2 231 232 The analog outputs can be set up as either current or voltage sources. L/L L-/N 53 52 51 Active current source 0/4 to 20 ma (e.g. transmitters with their own power supply - - Input 1 Input 2 101 102 103 201 202 203 Loop powered 2-wire transmitter using an external power supply. Loop powered 2-wire transmitter using the internal loop power supply. - 101 102 103 Input 1 Input 2 Y Y - 201 202 203 Input 1 I - 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 Power consumption 11.0 VA Fuse Slow blow 250 ma (90 to 253 V), slow blow 630 ma (20 to 28 V) Y Y 101 102 103 Input 2 I - 201 202 203 3
Accuracy Installation conditions Current output Installation angle 0.1% of FSD Temperature drift: 0.05% / 10 K ambient temperature 0.1% of FSD Temperature drift: 0.05% / 10 K ambient temperature No limit Ambient conditions Ambient temperature 0 to 140 F (-20 to 60 C) Storage temperature -20 to 155 F (-30 to 70 C) Climatic class To IEC 60 654-1 Class B2 Ingress protection NEMA 1 (IP 20) EMC/immunity RF protection To CISPR (to EN 55011 Group 1, Class A) Safety Normal 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 Normal mode noise rejection To IEC 61010-1, overvoltage category II, installation excess current protection 10 A 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 Mechanical construction Type Housing for mounting on DIN rail to EN 50 022-35 Dimensions Dimensions are in inches (mm) 1.77" (45) 4.41" (112) 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 mm 2 ) solid core, 18 AWG (1.0 mm 2 ) 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 Certificates and approvals LED s - Operation display - Fault display - Alarm relay condition (relays optional) RS 232 Interface Connection Operating Push Buttons 89/336/EWG and 73/23/EWG guide lines Enter Push Button CE mark CSA genral purpose C22.2 No. 142 Hazardous protection ATEX II (1) GD [EEx ia] IIc PBT 00 ATEX 2065 input connection values Maximum connection values for the analog inputs inductance and capacitance EEx ia IIC IIB IIA Peak values C 0 88 nf C 0 683 nf C 0 2280 nf L 0 4.8 mh L 0 18.0 mh L 0 39.1 mh Internal inductance and internal capacitance are so small that they are negligible Open circuit voltage: U 0 27.3 V Short circuit current: I 0 90.4 ma Power consumption: P 0 617 mw Supplemental documentation Operating manual ATEX safety instructions BA 103R/09/en XA 003R/09/en 5
Ordering Information RMA 422 process transmitter 1 2 3 4 5 6 7 RMA 422-1 Certification A Non-hazardous area version B ATEX II (1) GD [EEx ia] IIC 2 Power supply 1 90 to 253 VAC, 50/60 Hz 2 18 to 36 VDC; 20 to 28 VAC, 50/60 Hz 3 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 4 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) 5 output 1 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 6 Alarm relays 1 Relays not required 2 2 alarm relays each with 1 SPDT relay contact 7 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 EndressHauser, Inc. 2350 Endress Place Greenwood, IN 46143 Phone: (317) 535-7138 888-ENDRESS FAX: (317) 535-8498 Canada EndressHauser Canada Ltd. 1440 Graham s Lane Unit 1, Burlington ON, L7S 1W3 Phone: (905) 681-9292 800-668-3199 FAX: (905) 681-9444 Mexico EndressHauser Paseo del Pedregal No. 610 Col. Jardines del Pedregal 01900, Mexico D.F. Mexico Phone: (525) 568-2405 FAX: (525) 568-7459 EndressHauser The Power of Know How TI 072R/24/ae/04.03 2003 EndressHauser, Inc.