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13

NOTE:
1) For band alarm, H.A./H.A.Ac/H.L. signifies

outside band alarm, while L.A./ L.A.Ac/L.L.
signifies inside band alarm.

2) The "Silence" function allows the manual reset

of the alarm even if the alarm condition is still in
progress.

Example 

Example 

Example 

Example 

Example  for P2 = H.A.

* Alarm Status: Relay energized (P3 = dir)

Relay de-energized (P3 =rEV)

Example 

Example 

Example 

Example 

Example  for P2 = H.A.A.c

* Alarm Status: Relay energized (P3 = dir)

Relay de-energized (P3 =rEV)

Example 

Example 

Example 

Example 

Example  for P2 = H.L.

* Alarm Status: Relay energized (P3 = dir)

Relay de-energized (P3 =rEV)

P3 = Alarm Action

P3 = Alarm Action

P3 = Alarm Action

P3 = Alarm Action

P3 = Alarm Action
(Skipped if option not is available or P1 = none)
dir =

Direct action
(Relay energized in alarm condition)

rEV =

Reverse action
(Relay energized in non-alarm condition)

(Alarm
Hysteresis)

Relay

Non alarm status

ON

OFF

FLASH

FLASH

(Alarm
threshold)

Manual
reset

Alarm status*

ALM LED

Manual
reset

(Alarm
Hysteresis)

Alarm status*

Relay

Non alarm status

ON

OFF

ALM LED

FLASH

FLASH

(Alarm
threshold)

Manual
reset

(Alarm
Hysteresis)

Alarm status*

Relay

Non alarm status

ON

OFF

FLASH

FLASH

(Alarm
threshold)

Manual
reset

ALM LED

LHL-1-NEUTRO.pmd

19/04/2004, 15.07

13

Summary of Contents for CN3271 Series

Page 1: ...CN3271 add2 pmd 19 08 2004 16 36 1...

Page 2: ...stbus 8034 1180 LA Amstelveen The Netherlands Tel 31 0 20 3472121 Fax 31 0 20 6434643 Toll Free in Benelux 0800 0993344 e mail sales omegaeng nl Czech Republic Czech Republic Czech Republic Czech Repu...

Page 3: ...16 Key functions in normal display mode 16 Operative parameter display mode 16 Key functions in operative parameter display mode 17 Operating parameters 17 Limiter function 18 Alarm functions 19 Seri...

Page 4: ...45 mm 1 772 x 1 772 in For outline refer to Dimensions and Panel Cutout Panel surface texture must be better than 6 3 m The instrument is shipped with a rubber panel gasket 50 to 60 Sh To insure the...

Page 5: ...BLOCKS DIMENSIONS AND REAR TERMINAL BLOCKS DIMENSIONS AND REAR TERMINAL BLOCKS DIMENSIONS AND REAR TERMINAL BLOCKS DIMENSIONS AND REAR TERMINAL BLOCKS With RS 485 Without RS 485 Fig 2 Chromalox LHL 1...

Page 6: ...odes etc connected between sensor and input terminals may cause errors in measurement due to excessive and or not balanced line resistance or possible leakage currents TC Input TC Input TC Input TC In...

Page 7: ...be the same LINEAR INPUT LINEAR INPUT LINEAR INPUT LINEAR INPUT LINEAR INPUT Fig 6 mA mV AND V INPUTS WIRING NOTE NOTE NOTE NOTE NOTE 1 Don t run input wires together with power cables 2 Pay attention...

Page 8: ...NC OUT 1 OUT 1 Class 1 C 1 Relay Outputs C 1 Relay Outputs C 1 Relay Outputs C 1 Relay Outputs C 1 Relay Outputs Fig 8 The OUT 1 contact rating is 3A 250V AC on resistive load The OUT 2 contact ratin...

Page 9: ...e of capacitor C and resistor R are shown in the following table The cable involved in relay output wiring must be as far away as possible from input or communica tion cables D Serial Interface D Seri...

Page 10: ...Power supply Type Current Voltage 24 V AC DC T 500 mA 250 V 100 240 V AC T 125 mA 250 V When fuse is damaged it is advisable to verify the power supply circuit so that it is necessary to send back th...

Page 11: ...n open 60 mV close open open open 5 V open close open open 10 V open open close open 20 mA open open open close High Low Limiter with RS 485 High Low Limiter with RS 485 High Low Limiter with RS 485 H...

Page 12: ...he lower display will show the firmware version Press the FUNC key to start the configuration procedure with the first parameter L1 The following is a complete list of parameters The lower display wil...

Page 13: ..._ _ _ _ _ Two decimal figures _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ Three decimal figures r3 Initial value of the readout scale r3 Initial value of the readout scale r3 Initial value of the readout...

Page 14: ...LO and the measured value is less than limiter threshold Su parameter see Operative parameters or C1 HiLO and the measured value is greater than Su parameter see Operative parameters or less than S1 p...

Page 15: ...AL P Process alarm AL b Band alarm AL d Deviation alarm When C1 Hi Lo AL b and AL d are not available P 2 P 2 P 2 P 2 P 2 Alarm configuration Alarm configuration Alarm configuration Alarm configurati...

Page 16: ...mple for P2 H L Alarm Status Relay energized P3 dir Relay de energized P3 rEV P3 Alarm Action P3 Alarm Action P3 Alarm Action P3 Alarm Action P3 Alarm Action Skipped if option not is available or P1 n...

Page 17: ...e for applied to the Measured Value for Alarm Action Alarm Action Alarm Action Alarm Action Alarm Action Skipped if option is not available or P1 none Range From 0 filter OFF to 8 seconds First order...

Page 18: ...displays shows t If no shutdown condition was detected the upper display will show The information is lost at power down and at powerup the device will display the process variable 5 The upper displa...

Page 19: ...again to end the Lamp Test or By pressing these keys it is possible to change the displayed information See Normal Display Mode on previous page RESET Press and hold for 1 second to rearm reset the l...

Page 20: ...is fitted and P1 AL P AL b or AL d Range From 0 1 to 10 0 of the input span or 1 LSD To switch from LOCKED to UNLOCKED assign to the nn parameter a value equal to the n1 parameter setting To switch f...

Page 21: ...edge action has been performed The upper display flashes during a shutdown and returns to a steady display when the shutdown condition no longer exists When the OUT 1 is OFF the RESET LED is ON if the...

Page 22: ...at the instrument start up until process variable reaches the alarm threshold plus or minus hysteresis If the alarm is programmed as a process alarm this function masks the alarm condition at instrum...

Page 23: ...in accordance with r7 Error Messages Error Messages Error Messages Error Messages Error Messages On power up the instrument performs a self diagnostic test When an error is detected the lower display...

Page 24: ...tion ratio Normal mode rejection ratio 60 dB 50 60 Hz Electromagnetic compatibility and safety Electromagnetic compatibility and safety Electromagnetic compatibility and safety Electromagnetic compati...

Page 25: ...DIN 43760 Burn out Burn out Burn out Burn out Burn out The instrument detect the open condition of one or more wires It is able to detect also the short circuit of the sensor STANDARD RANGES TABLE C...

Page 26: ...Function Function Alarm output Action Action Action Action Action direct reverse programmable by front keyboard ALARM ALARM ALARM ALARM ALARM Action Action Action Action Action Direct or reverse acti...

Page 27: ...US Baud rate Baud rate Baud rate Baud rate Baud rate programmable from 600 to 19200 BAUD Byte format Byte format Byte format Byte format Byte format 8 bit Parity Parity Parity Parity Parity even odd o...

Page 28: ...splays will show b Press either the or key the display will show c Press the FUNC key the display will show This indicates that the loading procedure has been initiated After about 3 seconds the loadi...

Page 29: ...s a Internal switch V101 must be open b The upper display will show c Press the key the lower display will show the firmware version d Still holding the key press the key the display will show e Press...

Page 30: ...ean nbUS 1 19200 8E Type J 100 to 1000 C 100 1000 0 1 second uP Hi 1 Auto 0 1 second nonE H A rEV OFF 1 second 0 10 seconds Table 2 American nbUS 1 19200 8E Type J 150 to 1830 F 150 1830 0 1 second uP...

Page 31: ...Platinum 6 Rh N N N N N Nicrosil Nisil British British British British British BS 1843 BS 1843 BS 1843 BS 1843 BS 1843 White Blue Blue Yellow Blue Black Brown Blue Red White Blue Green White Blue Gree...

Page 32: ...on provided by OMEGA either verbal or written OMEGA warrants only that the parts manufactured by it will be as specified and provided by OMEGA either verbal or written OMEGA warrants only that the par...

Page 33: ...nsducers Instrumentation Accessories FLOW LEVEL FLOW LEVEL FLOW LEVEL FLOW LEVEL FLOW LEVEL Rotameters Gas Mass Flowmeters Flow Computers Air Velocity Indicators Turbine Paddlewheel Systems Totalizers...

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