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17

nn

Software Key

Software Key

Software Key

Software Key

Software Key
(Skipped if n1 = 0 or 1)
ON = the device is LOCKED.
OFF = the device is UNLOCKED.
When it is desired to switch from LOCK to
UNLOCK condition, set a value equal to
“n1” parameter.
When it is desired to switch from
UNLOCK to LOCK condition, set a value
different from “n1” parameter.

Su

Limiter Threshold

Limiter Threshold

Limiter Threshold

Limiter Threshold

Limiter Threshold
Range: Span limits (From "S1" to full scale
value when C1 = Hi.Lo)

S1

Second Limiter Threshold

Second Limiter Threshold

Second Limiter Threshold

Second Limiter Threshold

Second Limiter Threshold
(Available when C1 = Hi.Lo)
Range: From initial scale value to "Su"

HS

Limiter Hysteresis

Limiter Hysteresis

Limiter Hysteresis

Limiter Hysteresis

Limiter Hysteresis
Range: From 0.1% to 10.0% of the
input span or 1 LSD

AL

Alarm Threshold  (optional)

Alarm Threshold  (optional)

Alarm Threshold  (optional)

Alarm Threshold  (optional)

Alarm Threshold  (optional)
(Available only if the option is fitted and
P1= AL.P, AL.b or AL.d.)
Ranges:
span limits for process alarm (P1 = AL.P)
from 0 to 500 for band alarm (P1 = AL.b)
from -500 to 500 for deviation alarm
(P1 = AL.d)

HA

Alarm Hysteresis  (optional)

Alarm Hysteresis  (optional)

Alarm Hysteresis  (optional)

Alarm Hysteresis  (optional)

Alarm Hysteresis  (optional)
(Available only if the option 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 from UNLOCKED to
LOCKED, assign to the “nn” parameter any number
other than the n1 parameter setting.
When the device is in remote  mode (the serial link
controls the device) no parameters can be modified.

Key Functions in

Key Functions in

Key Functions in

Key Functions in

Key Functions in
Operative Parameter Display Mode

Operative Parameter Display Mode

Operative Parameter Display Mode

Operative Parameter Display Mode

Operative Parameter Display Mode

FUNC

=

Pressing the “FUNC” key, the
instrument stores the new setting
(if changed) and goes to the next
parameter.

 or 

=

Changes the setting of the
selected parameter.

RESET

=

Press and hold for more than 1
second for limiter rearmament.

OPERATING PARAMETERS

OPERATING PARAMETERS

OPERATING PARAMETERS

OPERATING PARAMETERS

OPERATING PARAMETERS
Some of the following parameters may not appear,
depending on the configuration.

Lower

Description

Display

a

Manual reset of the alarm.

Manual reset of the alarm.

Manual reset of the alarm.

Manual reset of the alarm.

Manual reset of the alarm.
(Available only if P1 = AL.p, AL.b or AL.d)
ON = Starts the manual reset of the alarm
OFF = Do not start the alarm reset.
Select ON and press the FUNC  key in order
to reset the alarm.
After a manual reset of the alarm the
instrument returns in Normal Display Mode.

6

LHL-1-NEUTRO.pmd

19/04/2004, 15.07

17

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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