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Instruction Manual
PN 31302
MODEL 7SL
®
HIGH/LOW LIMITROL
1
7sl-0-00.p65 1 9/17/02, 2:35 PM
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1/16 DIN, FOUR DIGIT HIGH/LOW LIMITROL MODEL: 0 7 S L - 9 1 - 0 0 0 - 0 - 0 0 Field No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Fields 1 through 4. BASE Field 6. OUTPUT (High/Low Limit) 07SL - Limitrol (High/Low Limit – shipped as High Limit) 1 - Relay (Form C) Field 5. INPUT Fields 7, 8. ALARMS, OPTIONS 9 - TC types J, K, T, E, N, S, R, B, L, U, G, D, C and 00 - None Platinel II; and Pt 100 RTD; 10 - One alarm – Relay Form A 0 to 20 mAdc and 4 to 20 mAdc; 11 - On
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Congratulations Unpack the Congratulations on your purchase of one of the easiest to Instrument configure high/low Limitrols on the market. After a 3 step configuration procedure, your process will be up and running. Wiring Guide to simple set-up Configuration To set-up the Limitrol only 3 steps are required: 1. Wire the instrument (page 7). 2. Configure the instrument (page 14). 3. Check the operating parameters (page 22). Operating Parameters SV 3 7sl-0-00.p65 3 9/17/02, 2:35 PM
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Table of Contents CAUTION: 1/16 DIN, FOUR DIGIT HIGH/LOW LIMITROL .......... 2 USE WIRE SUITABLE Guide to simple set-up ...................................... 3 MOUNTING REQUIREMENTS .................................. 5 FOR 75°C MINIMUM. DIMENSIONS AND PANEL CUTOUT ....................... 6 WIRING GUIDELINES ............................................... 7 PRELIMINARY HARDWARE SETTINGS ............... 12 CONFIGURATION KEY FUNCTIONS ..................... 14 NOTES CONFIGURATION PROCEDURE .......
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MOUNTING REQUIREMENTS Panel surface texture must be better than 6.3 µmm. Select a mounting location with the following The instrument is shipped with a rubber panel gasket (50 characteristics: to 60 Sh). To assure the IP65 and NEMA 4 protection, 1) Minimal vibration. insert the panel gasket between the instrument and the 2) An ambient temperature range between 0 and panel as shown below. 50°C (32 and 122 °F). 3) Easy access to the rear of the instrument. Install the instrument as follows: 4) No
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60 mm (2.362 in) 45 mm, -0, +0.6 mm (1.772 in, -0, +0.024 in) DIMENSIONS AND PANEL CUTOUT 48 mm (1.890 in) 48 mm (1.890 in) 10 mm 122 mm (4.803 in) w/ RS-485 75 mm (0.394 in) 105 mm (4.134 in) w/o RS-485 (2.953 in) 45 mm, -0, +0.6 mm (1.772 in, -0, +0.024 in) 6 7sl-1-00.p65 6 9/17/02, 2:39 PM
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A/A' NO C OUT 1 OUT 2 C NO B/B' RS485 C NC _ DIG 1 WIRING GUIDELINES A) Measuring Inputs NOTE: Any external components (like Zener diodes, Terminal Layout etc.) connected between sensor and input terminals may cause errors in measurement due to excessive and/or not balanced line resistance or possible leakage cur- rents. + 6 11 1 TC Input + 12 2 10 7 _ 8 13 3 9 Shield 4 9 14 + 10 TC + 5 10 15 _ 9 Shield NOTE: NOTE: When a relay output is used to drive an inductive load, connect an external snub
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Linear Input RTD Input RTD RTD + 10 + mA, mV or _ _ V 9 Shield + 10 + 8 9 10 8 9 10 mA mV NOTE: _ _ or 9 1) Do not run RTD wires with power cables. V 2) Ground shielded cable at one end only. G 3) Use the correct size copper wires. 4) The resistance of the 3 wires must be the same. NOTE: 1) Do not run input wires with power cables. 2) High line resistance can cause measurement errors. 3) When shielded cable is used, ground it at one end only to avoid ground loop currents. B) Logic Input 4) The i
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Thermocouple Compensating Cable Color Codes. Thermocouple British American German French Material BS 1843 ANSI MC 96.1 DIN 43710 NFE 18-001 T Copper Constantan + White + Blue + Red + Yellow - Blue - Red - Brown - Blue Blue Blue Brown Blue J/L Iron Constantan + Yellow + White + Red + Yellow - Blue - Red - Blue - Black Black Black Blue Black K Nickel Chromium + Brown + Yellow + Red + Yellow Nickel Aluminum - Blue - Red - Green - Purple Red Yellow Green Yellow R Platinum/Platinum + White + Black +
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C.1) Relay Outputs C.2) Inductive Loads High voltage transients may occur when switching induc- NO - OUT 1 tive loads. Through internal contacts these transients OUT 1 1 may introduce disturbances which can affect the perfor- mance of the instrument. The same problem may occur C - OUT 1 when a switch is used in series with the internal contacts 2 Class 1 as shown below. NC - OUT 1 3 C C R OUT 2 6 POWER Class 1 LINE (Alarm) NO 7 LOAD For all the outputs, the internal protection (varistor) assur
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D) Serial Interface The RS-485 interface can connect up to 31 instruments with the remote master unit (see below). For units built with optional RS-485 communication I I A/A' A'/A N A'/A A/A' 11 N 11 M S M S A T A T B'/B B/B' S R B/B' B'/B S 12 R 12 T U U T E M E COMMON M R E COMMON R 13 E 13 N N T T I 11 N Maximum cable length: 1.5 km (9/10 mile) at 9600 baud. S NOTE: According to EIA specification for RS-485: T 12 a) The “A” terminal of the generator shall be negative R with respect to the “B
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E) Power Line and grounding PRELIMINARY HARDWARE SETTINGS N, L2 1) Remove the instrument from its case. 4 2) Set J106 according to the following table: POWER SUPPLY 100 to 240 Vac 24 Vac/Vdc 5 R (S,T), L1 N, L2 J106 Input Type R (S,T), L1 14 -236 - 58 - 7- NOTE: T/C, RTD, 1) Before connecting the power line, check that the 0-60 mV, 12-60 mV close open open open voltage is correct (see Model Number). (standard configuration) 2) For supply connections use 16 AWG or larger wires rated for at least
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Limitrol with RS-485 2 4 6 8 J106 V101 1 3 5 7 Limitrol without RS-485 13 7sl-1-00.p65 13 9/17/02, 2:39 PM
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CONFIGURATION KEY FUNCTIONS The following is a complete list of parameters. The lower RESET In Configuration Mode, used only to scroll display will show the parameter code (L1 to d1) and the back parameters upper display will show the selection code or numerical value. No timeout is applied in the configuration mode. Used in Configuration Mode to decrease the parameter value. L1 = Serial Interface Protocol (Skipped if option is not available.) Used in Configuration Mode to increase the OFF =
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r1 = Input Type and Range Value r2 = Decimal Point Position 0 = TC J From -100 to 1000 °C (Available only for linear range r1 = 15 to 22) 1 = TC K From -100 to 1370 °C _ _ _ _ . = No decimal 2 = TC T From -200 to 400 °C _ _ _ . _ = One decimal place 3 = TC E From -100 to 800 °C _ _ . _ _ = Two decimal places 4 = TC N From -100 to 1400 °C _ . _ _ _ = Three decimal places 5 = TC S From -50 to 1760 °C 6 = TC R From -50 to 1760 °C r3 = Low Scale Range Value 7 = TC B From 0 to 1820 °C (Available only
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Control Output Function Example of limit function when C1 = Hi and C2 = O The relay output operates in fail-safe mode (relay de- HS energized during reset condition) and latching mode. Su (Setpoint (Setpoint threshold threshold) The control output turns OFF when the setpoint is ex- hysteresis) ON ceeded when C1 = Hi, or C1 = Lo. (When C1 = Hi.Lo Relay OUT 1 control output turns off when the process is greater than OFF “Su” or less than “S1”). ON "Reset" LED The control output remains OFF unti
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C3 = Reset at Power-up P2 = H.A. LED lit steady Ack. Auto = Automatic reset Alarm Relay in alarm status still = Manual reset nAn No LED flashing exists Ack. Relay in alarm status C4 = Reset Memory Alarm LED off 0 = The reset condition will be saved (at next P2 = L.A. clears Relay not in alarm status power up it will be reactivated) LED lit steady Ack. 1 = The reset condition will be lost in case of P2 = H.A.Ac Alarm Relay not in alarm status still power down No LED flashing exists Ack. Relay in
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Example for P2 = H.A.A.c P3 = Alarm Action (Skipped if option not is available or P1 = none) (Alarm (Hysteresis) threshold) dir = Direct action (Relay energized in alarm condition) Alarm status* rEV = Reverse action Relay (Relay energized in non-alarm condition) No alarm status ON P4 = Alarm Standby Function ALM LED FLASH FLASH (Skipped if option is not available or P1= none) OFF OFF = Standby function disabled ACK On = Standby function enabled ACK = Alarm acknowledgment from "AK" parameter If t
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t1 = Timeout Selection tn10 = 10 second timeout tn30 = 30 second timeout d1 = Digital Input (contact closure) (This is a read only parameter) Enb = Digital input enabled dlS = Digital input disabled (The digital input is used as a remote process restart.) The configuration procedure is now complete. The display should show "COnF". 19 7sl-2-00.p65 19 9/17/02, 2:40 PM
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OPERATING MODE 6) The upper display shows the minimum value of the 1) Remove the instrument from its case. process variable detected during the last "reset" con- 2) Set switch V101 to the closed position. dition while the lower display shows "PL.” (if no data 3) Re-insert the instrument in its case. is available, the upper display will show “- - - -”) This 4) Switch on the instrument. information is not available if C1 = Hi. The information is lost at power down and at powerup the device wil
