Omega LDB-T Owner's manual

Brand: Omega

Model: LDB-T

Type: Owner's manual

e-mail: [email protected]

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LDB-T

Temperature Meters

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User’s Guide

The information contained in this document is believed to be correct, but OMEGA accepts no liability for any errors it contains, and reserves

the right to alter specifications without notice.

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1. LDB-T Series

Large format industrial meters for temperature signals

Large format meters for long distance reading, for industrial

applicaons. Dierent formats available with 4 and 6 digits,

with 60 mm and 100 m digit height. Front keypad to access the

conguraon menu, and oponal remote keypad.

Models to measure temperature signals from Pt100 / RTD

probes with 2 and 3 wires, and thermocouple types J, K, T, E,

S, R, N, C, L and X. Reading congurable in degrees Celsius (ºC)

or Fahrenheit (ºF). Congurable compensaon of the thermo

couple cold juncon (see secon 1.13.2). Congurable manual

oset (see secon 1.13.2). Congurable behaviour in case of

sensor break (see secon 1.13.2).

Output and control opons with 1, 2 and 3 relays, transis

tor outputs, controls for SSR relays, isolated analog outputs,

communicaons in Modbus RTU, RS485 ASCII and RS232.

Sturdy metal housing with full IP65 protecon. Internal

connecons by plug-in screw clamp terminals, and output

through cable glands. Housing prepared for panel, wall and

hanging mount.

• Congurable ‘Fast access’ to selected funcons with key

‘UP’ (5) (see secon 1.13.6)

• ‘On power up’ for system protecon on ‘cold’ start-up

and / or acvaon of automac tare (see secon 1.13.7)

• alarms with 1 or 2 setpoints, independent acvaon

and deacvaon delays, hysteresis, manual unlocking, ...

(see secon 1.13.3)

Display lters, memory of maximum and minimum reading,

password protecon, 5 brightness levels.

1. Idenfy the instrument format (see secon 1.4)

2. Power and signal connecons

- open the instrument (see secon 1.5)

- connect the power (see secon 1.7)

- connect the signal (see secon 1.8)

- close the instrument (see secon 1.5)

3. Congure the instrument (see secon 1.13)

- congure the sensor connected and congure the

temperature parameters (see secon 1.13.2)

4. Advanced conguraon (oponal)

- congure the instrument alarms (see secon 1.13.3)

- congure the fast access (see secon 1.13.6)

- congure other funcons : display lters (1.13.5), ‘on

power up’ (1.13.7), key ‘LE’ (1.13.8), and password

(1.13.11)

1.1 How to use this manual

5. If the instrument includes analog output (AO) or serial

communicaons (RTU, S4, S2)

- to include an opon to an instrument see secon 1.6

- to congure an installed opon, access the opon

conguraon menu (see secon 1.13.15)

- see secon 2 for informaon regarding the output and

control opons available

6. Install the instrument

- mount on panel, wall or hanging (see secon 1.16)

- adjust the brightness level according to your environmen

tal needs (see secon 1.13.14)

If this is the rst me you are conguring a large format

meter, below are the steps to follow to install and congure

the instrument.

Read all the manual secons in order to have a full and clear

view of the characteriscs of the instrument. Do not forget

to read the installaon precauons at secon 1.17.

1.2 How to order

LDB-T Series . . . . . . . . . . . . . . . . . . . . . . . . . 2

1.1 How to use this manual . . . . . . . . . . . . . . . . 2

1.2 How to order . . . . . . . . . . . . . . . . . . . . . . 3

1.3 Index . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

1.4 Sizes and formats . . . . . . . . . . . . . . . . . . . . 4

1.4.1 Format LDB-24. . . . . . . . . . . . . . . . . . . . 4

1.4.2 Format LDB-44. . . . . . . . . . . . . . . . . . . . 4

1.4.3 Format LDB-26. . . . . . . . . . . . . . . . . . . . 5

1.4.4 Format LDB-46. . . . . . . . . . . . . . . . . . . . 5

1.5 To access the instrument . . . . . . . . . . . . . . . . 6

1.6 Modular system . . . . . . . . . . . . . . . . . . . . . 6

1.7 Power connecons and protecve earth . . . . . . . 7

1.8 Input signal connecons . . . . . . . . . . . . . . . . 7

1.9 Connecons for remote keypad . . . . . . . . . . . . 8

1.10 Funcons included . . . . . . . . . . . . . . . . . . 8

1.11 Messages and errors . . . . . . . . . . . . . . . . . 8

1.12 Technical specicaons . . . . . . . . . . . . . . . . 8

1.13 Conguraon . . . . . . . . . . . . . . . . . . . . 10

1.13.1 How to operate the menus . . . . . . . . . . . 10

1.13.2 Inial set-up . . . . . . . . . . . . . . . . . . . 11

1.13.3 Alarms . . . . . . . . . . . . . . . . . . . . . . 12

1.13.4 Alarms conguraon menu . . . . . . . . . . . 13

1.13.5 Display lters . . . . . . . . . . . . . . . . . . . 14

1.13.6 Fast access . . . . . . . . . . . . . . . . . . . . 14

1.13.7 ‘on power up’ funcon . . . . . . . . . . . . . 14

1.13.8 ‘LE’ key . . . . . . . . . . . . . . . . . . . . . . 14

1.13.9 Display lters conguraon menu . . . . . . . 15

1.13.10 Tools conguraon menu . . . . . . . . . . . 15

1.13.11 Password conguraon . . . . . . . . . . . . 16

1.13.12 Default factory conguraon . . . . . . . . . 16

1.13.13 Firmware version . . . . . . . . . . . . . . . . 16

1.13.14 Brightness conguraon . . . . . . . . . . . . 16

1.13.15 Access to the opons conguraon menu . . 16

1.14 Factory conguraon . . . . . . . . . . . . . . . . 17

1.15 Full conguraon menu. . . . . . . . . . . . . . . 18

1.16 Mounng. . . . . . . . . . . . . . . . . . . . . . . 20

1.17 Installaon precauons . . . . . . . . . . . . . . . 21

1.18 Warranty . . . . . . . . . . . . . . . . . . . . . . . 21

1.19 CE declaraon of conformity . . . . . . . . . . . . 21

2. Output and control modules . . . . . . . . . . . . . . 22

2.1 Module R1 . . . . . . . . . . . . . . . . . . . . . . . 22

2.2 Module T1 . . . . . . . . . . . . . . . . . . . . . . . 22

2.3 Module SSR . . . . . . . . . . . . . . . . . . . . . . 23

2.4 Module AO . . . . . . . . . . . . . . . . . . . . . . 23

2.5 Module RTU . . . . . . . . . . . . . . . . . . . . . . 24

2.6 Module S4 . . . . . . . . . . . . . . . . . . . . . . . 24

2.7 Module S2 . . . . . . . . . . . . . . . . . . . . . . . 25

LDB-24 T

Model Power

H -

Opon 1

- -

Opon 2

Opon 3*

-R1 (1 relay)

-AO (analog output)

-RTU (Modbus RTU)

-S4 (RS-485)

-S2 (RS-232)

-T1 (1 transistor)

-SSR (1 control SSR)

-0 (empty)

-H (85-265 Vac

and 120-370 Vdc)

-L

(11-36 Vdc isolated)

Color

-R (red led)

-G

(green led)

LDB-24 (60 mm, 4 digits)

LDB-26 (60 mm, 6 digits)

LDB-44

(100 mm, 4 digits)

LDB-46

(100 mm, 6 digits)

Others

Format

*Opon 3 available

with formats LDB-26

and LDB-46

1.3 Index

1.4 Sizes and formats

1.4.1 Format LDB-24

Size A 340 mm

Size B 135 mm

Size C 3 mm

Size D 55 mm

Size E 25 mm

Table 1 - Sizes LDB-24

Cut-out G 322 mm (±1)

Cut-out F 117 mm (±1)

Table 2 - Panel cut-out LDB-24

Power

Opon 2 Opon 1

Remote keypad

Signal

Power

Slot for opon 2

Slot for opon 1

Input signal terminal

Remote keypad terminal

CDE

Cable glands

Panel cut-out

(see Table 2)

1.4.2 Format LDB-44

Size A 542 mm

Size B 166 mm

Size C 3 mm

Size D 55 mm

Size E 25 mm

Table 3 - Sizes LDB-44

Cut-out G 524 mm (±1)

Cut-out F 148 mm (±1)

Table 4 - Panel cut-out LDB-44

Power

Opon 2 Opon 1

Remote keypad

Signal

CDE

Panel cut-out

(see Table 4)

1.4.3 Format LDB-26

Power

Opon 3 Opon 2

Remote keypad

SignalOpon 1

CDE

Cable glands

Power

Slot for opon 3

Slot for opon 2

Input signal terminal

Remote keypad terminal

Slot for opon 1

Size A 436 mm

Size B 135 mm

Size C 3 mm

Size D 55 mm

Size E 25 mm

Table 5 - Sizes LDB-26

Cut-out G 418 mm (±1)

Cut-out F 117 mm (±1)

Table 6 - Panel cut-out LDB-26

Panel cut-out

(see Table 6)

1.4.4 Format LDB46

CDE

Power

Opon 3 Opon 2

Remote keypad

SignalOpon 1

Size A 740 mm

Size B 166 mm

Size C 3 mm

Size D 55 mm

Size E 25 mm

Table 7 - Sizes

LDB-46

Cut-out G 722 mm (±1)

Cut-out F 148 mm (±1)

Table 8 - Panel cut-out LDB-46

Panel cut-out

(see Table 8)

1.5 To access the instrument

To open the housing, remove the screws from the back

cover. With each screw there is a metal washer and a plasc

washer. Once the screws are out, remove the back cover.

The gure below shows the instrument internal structure for

a LDB-26 format. It shows the locaon of the 3 slots for opon

al output and control modules, the power terminal and the

input signal terminal.

To close the instrument, place the back cover, the screws,

the metal washer and the plasc washer. The plasc washer

is in contact with the back cover. Conrm that the screws are

correctly turning inside the internal female screws.

To ensure a correct IP65 protecon ghten the back cover

screws with a strength between 30 and 40 Ncm, with the

help of a dynamometer screwdriver.

1.6 Modular system

Large format meters are designed with an

internal modular architecture. The output and control

modules are independent and can be installed by accessing

the internal circuits of the instrument, and connecng the

module to the connecon jumpers of the selected slot.

Each module is provided with a cable e to x the

module to the e base. The input signal modules denes the

instrument funcon and are exchangeable, switching a

temperature meter to an impulse counter only by replacing

the input signal module.

See secon 2. for informaon regarding the output and

control opons available

To install an output and control module

(1) insert the ‘module pins’ into the

‘connecon jumpers’ in one of the

free slots

(2) place the ‘cable e’ into the ‘e

base’ and embrace the ‘module’

rmly, unl it is xed

Slot 1

Slot 2

Slot 3

Connecon jumpers

Tie base

Cable e

(1)

(2)

Module pins

Output and control module

Power

Slot for opon 1

Slot for opon 2

Input signal terminal

Remote keypad terminal

Slot for opon 3Back cover

Female turret

Risk of electric shock. Removing the back

cover will grant access to the internal

circuits of the instrument. Operaon must

be performed by qualied personnel only.

Waterght seal

Screw

Metal washer

Plasc washer

1.7 Power connecons and protecve earth

1. Unscrew the screws from the back cover and remove the

back cover (see secon 1.5).

2. Pass the power cable through the power cable gland

(see secon 1.4).

3. Prepare the power cables so that the earth wire is 20 cm

longer than the other cables (see Figure 1).

4. Connect the earth wire to the internal xed screw ‘PE’

(see Figure 2) located at the inside of the back cover. The

instrument internally connects the back cover metallic

Phase (+)

Neutral (-)

Earth

20 cm

Figure 1 - Longer earth wire

Power cable gland

Screws

‘PE’ internal xed screw

Figure 2 - Locaon of the internal ‘PE’ xed screw and power cable gland

structure with the front metallic structure through an

internal green-yellow cable. (doed cable at Figure 3).

5. Connect phase and neutral (in AC power) or posive and

negave (in DC power) to the internal power terminal.

6. The connecons label aached to the outside of the

instrument has some free space le to write the color or

local code for each cable.

7. To comply with security regulaon 61010-1, add to the

power line a protecon fuse acng as a disconnecon

element, easily accessible to the operator and idened

as a protecon device.

Power ‘H’ 500 mA me-lag fuse

Power ‘L’ 1000 mA me-lag fuse

Power Terminal

(orange)

fuse

Figure 3 - Power connecons

1. Unscrew the screws from the back cover and remove the

back cover (see secon 1.5).

2. Locate the input signal terminal (see secon 1.4).

3. Pass the signal cable through the signal cable gland (see

secon 1.4).

4. Connect the input signal cables

5. The connecons label aached to the outside of the

instrument has some free space le to write the color or

local code for each cable.

1.8 Input signal connecons

tc+

tc-

Input Signal

Figure 4 - Connecons for thermocouples.

Pt100

Input Signal

Figure 5 - Connecons for ‘Pt100 2 wires’. Terminal 2 not connected.

Pt100

Input Signal

Figure 6 - Connecons for ‘Pt100 3 wires’.

Digits

number of digits 4

digit 7 segments

view angle 120º

color red or green

digit height (see Table 12)

Reading

max., min. 9999 / -1999

overrange / underrange ash reading

sensor break reading to maximum or

minimum (see secon 1.13.2)

Input signal

accepted signals Pt100 / RTD and thermocouples

temperature scale ITS90

units ºC or ºF

wire secon max. 0.5 mm

Pt100 / RTD signals 2 or 3 wire, selectable

resoluon 1º or 0.1º, selectable

measuring ranges (see Table 11)

max. error at 25 ºC (see Table 11)

thermal dri (see Table 11)

cable res. compensaon automac, up to 14 Ohms

compensaon error <0.02 ºC / Ohm

readings 4 / second

Thermocouples J, K, T, E, S, R, N, C, L, X*

(*thermocouple X is a lineal 10 uV / ºC signal)

resoluon 1º

measuring ranges (see Table 11)

max. error at 25 ºC (see Table 11)

thermal dri (see Table 11)

thermocouple CJC automac (see secon 1.13.2)

CJ accuracy <1.0 ºC

CJ thermal dri

<0.04

º/ºC

readings 3 / second

Funcons included Secon

Fast access menu yes, congurable 1.13.6

Manual oset congurable 1.13.2

Thermocouple cold

juncon

congurable

1.13.2

Probe break detec

on

congurable

1.13.2

Display lters ‘steps’ 1.13.5

‘On Power Up’ yes

1.13.7

Alarms

simple or double setpoint

acvaon delays

deacvaon delays

hysteresis

inverted relays

locked alarms

1.13.3

Memory maximum, minimum 1.13.6

Password conguraon locked 1.13.11

Brightness

congurable, 5 levels 1.13.14

Table 9 - Funcons included

The 4 pin terminal located beside

the input signal module allows to

replicate a remote version of the

front keypad. Connect 4 cables for

front keys ‘SQ’ (<), ‘UP’ (5) and

‘LE’ (3) and for the common. Pass

these cables through the ‘remote

keypad’ cable gland (see secon

1.4).

GND

1.9 Connecons for remote keypad

1.10 Funcons included

Messages and errors.

‘h.oVr’ hardware overrange (‘h.ovr’). Input signal is

higher than 80 mV.

‘h.udr’ hardware underrange (‘h.udr’). Input signal is

lower than -30 mV.

‘d.udr’

‘d.oVr’

display underrange (‘d.udr’) / overrange (‘d.ovr’).

The display is displaying the maximum/minimum

value possible (-1999 / 9999).

Table 10 - Messages and error codes.

Messages and errors.

‘brk’ instrument displays ‘brk’ ‘9999’ or ‘-9999’

• measured Pt100 resistance is higher than

390 Ohms (higher than 850 ºC)

• the Pt100 third wire has a measured impedance

higher than 15 Ohms

• the thermocouple is open circuit

‘Err.1’ incorrect password.

‘Err.2’ at ‘oPt.X’ menu entry, module is not recognized.

Table 10 - Messages and error codes.

1.11 Messages and errors

1.12 Technical specicaons

Power

power ‘H’ 85 to 265 Vac and 120 to 370 Vdc

isolated (isolaon 2500 Vac)

power ‘L’ 11 to 36 Vdc isolated

(isolaon 1500 Vdc)

consumpon (see Table 12)

fuses (see secon 1.7)

wire secon max. 2.5 mm

Conguraon front keypad with 3 keys

remote keypad (see secon 3.1)

Output and control opons

relay output, analog retransmission,

Modbus RTU, ... (see secon 2)

Mechanical

IP protecon full IP65 housing

mounng panel, wall , hanging (see secon

1.16)

connecons cable gland outputs

internal plug-in screw terminals

housing material

textured iron, black painted

methacrylate front lter

weight (see Table 12)

front sizes (see secon 1.4)

panel cut-out (see secon 1.4)

depth (see secon 1.4)

Temperature

operaon from 0 to +50 ºC

storage from -20 to +70 ºC

warm-up me 15 minutes

Sensor Range (en ºC) Error max.

a 25 ºC

Range (en ºF) Oset thermal

dri

Span thermal dri*

*includes oset thermal dri

Pt100 / RTD 800 / -200 ºC <0.2 ºC 1562 / -328 ºF 0.05 º/ºC 0.10 º/ºC

Thermocouple J 1200 / -200 ºC <2 ºC 2192 / -328 ºF 0.05 º/ºC 0.20 º/ºC

Thermocouple K 1372 / -200 ºC <2 ºC 2372 / -328 ºF 0.05 º/ºC 0.20 º/ºC

Thermocouple T 400 / -200 ºC <2 ºC 752 / -328 ºF 0.02 º/ºC 0.02 º/ºC

Thermocouple E 1000 / -200 ºC <2 ºC 1832 / -328 ºF 0.05 º/ºC 0.20 º/ºC

Thermocouple S 1768 / -50 ºC <4 ºC 2282 / -58 ºF 0.20 º/ºC 0.20 º/ºC

Thermocouple R 1600 / -50 ºC <4 ºC 2912 / -58 ºF 0.20 º/ºC 0.20 º/ºC

Thermocouple N 1300 / -200 ºC <2 ºC 2372 / -328 ºF 0.05 º/ºC 0.20 º/ºC

Thermocouple C 2320 / 0 ºC <2 ºC 4192 / 32 ºF 0.02 º/ºC 0.02 º/ºC

Thermocouple L 900 / -200 ºC <2 ºC 1652 / -328 ºF 0.05 º/ºC 0.20 º/ºC

Thermocouple X 4000 / -200 ºC <2 ºC 7232 / -328 ºF 0.02 º/ºC 0.02 º/ºC

Table 11 - Technical specicaons associated to sensor

Format LDB-24 Format LDB-44

Number of digits 4 4

Digit height 60 mm 100 mm

Reading distance 25 meters 50 meters

Slots for output and

control opons

2 2

Consumpon (without

opons installed)

3 W 5.25 W

Consumpon (with op

ons installed)

5 W 6.75 W

Weight 2200 gr. 2500 gr.

Table 12 - Technical specicaons associated to format

The instrument has two menus accessible to the user :

‘Conguraon menu’ (key ‘SQ’) (<)

‘Fast access’ menu (key ‘UP’) (5)

Conguraon menu

The ‘conguraon menu’ modies the conguraon pa

rameters to adapt the instrument to the applicaon needs.

To access the ‘conguraon menu’ press for 1 second the

‘SQ’ (<) key. This access can be blocked by acvang the

‘Password’ (‘PASS’) funcon. While operang the

‘conguraon menu’, the alarm status is ‘hold’ to the

status it had before accessing the menu, and the output and

control modules remain in ‘error’ state. When leaving the

‘conguraon menu’, the instrument applies a system

reset, followed by a brief disconnecon of the alarms and the

output and control modules. Funconality is then recovered.

For a detailed explanaon on the ‘conguraon menu’

see the following secons, and for a full view of the

‘conguraon menu’ see secon 1.15.

‘Fast access’ menu

The ‘fast access’ menu is an operator congurable menu,

providing fast and direct access to the most usual funcons

of the instrument with a single key pad stroke. Press key ‘UP’

(5) to access this menu.

See secon 1.13.6 for a list of selectable funcons for the

‘fast access’ menu in this instrument. The ‘Password’ (‘PASS’)

funcon does not block access to this menu. Accessing and

modifying parameters in the ‘fast access’ menu does not

interfere with the normal funconality of the instrument,

and it does not generate any system reset when validang

the changes.

Operang with the front keypad inside the menus

Key ‘SQ’ (<) - press the ‘SQ’ (<) key for 1 second to

access the ‘conguraon menu’. Inside the menu, the

‘SQ’ (<) key acts as an ‘ENTER’. It enters into the menu opon

selected, and when entering a numerical value, it validates the

number.

Key ‘UP’ (5) - press the ‘UP’ (5) key to access the ‘fast

access’ menu. Inside the menu,the ‘UP’ (5) key sequen-

ally moves through the available parameters and menu

entries. When entering a numerical value, it modies the digit

selected by increasing its value to 0, 1, 2, 3, 4, 5, 6, 7, 8, 9.

1.13 Conguraon

1.13.1 How to operate the menus

Key ‘LE’ (3) - press the ‘LE’ (3) key to acvate the cong-

ured special funcons associated to this key. Inside the menu,

the ‘LE’ (5) acts as an ‘ESCAPE’. It leaves the selected menu

level and eventually, by leaving all menu levels, it leaves

from the conguraon menu. Then changes are applied and

the instrument is back to normal funcon. When entering a

numerical value, it selects the acve digit, and the value is

then modied by key ‘UP’ (5).

‘Rollback’

Aer 30 seconds without interacon from the operator, the

instrument will rollback and leave the ‘conguraon menu’

or the ‘fast access’ menu. All changes will be discarded.

Instruments with 4 and 6 digits

The conguraon menus included in this document show

values for a 6 digit instrument. In case of 4 digit instruments,

note that maximum reading values should be 9999 instead

of 999999 to 9999 and minimum reading values should be

-1999 instead of -199999.

(2)

(3)

(4)

(5)

(3)

(6)

(1)

Example of operaon inside

the ‘conguraon menu’.

1. The (<) key enters into the

‘conguraon menu’.

2. The (<) key enters into the

‘InP’ menu.

3. The (5) key moves through

the menu opons.

4. The (<) key selects the

desired range and returns

to the ‘InP’ menu.

5. The (3) key leaves the

actual menu level and

moves to the previous

menu level.

6. The (3) key leaves the

‘conguraon menu’.

Changes are applied and

saved at this moment.

Figure 7 - Example of operaon inside the ‘conguraon menu’

1.13.2 Inial set-up

To congure the inial set up of the instrument, select the

sensor that is connected to the instrument, and then cong

ure the parameters at the ‘temperature conguraon’ menu.

At the ‘Input’ (‘Inp’) parameter, select the sensor that is

connected to the instrument. Available opons are

Pt100 / RTD with 2 wires, Pt100 / RTD with 3 wires, and

thermocouples J, K, T, E, S, R, N, C, L and X. Thermocouple X

is a linear 10 uV/ ºC signal.

At the ‘Temperature conguraon’ (‘cnF.t’) menu, congure

the following parameters:

• at the ‘Degrees’ (‘dEG’) parameter select ‘ºc’ to read the

temperature in degrees celsius or ‘ºF’ to read in degrees

Fahrenheit.

• at the ‘Resoluon Pt100’ (‘P.rES’) parameter select ‘1º’ to

read the Pt100 / RTD with 1 degree resoluon, or ‘0.1º’ for

tenths of degree resoluon.

• at the ‘Reading oset’ (‘oFFS’) parameter introduce

a number of counts that will be directly added to the

reading. This value applies both to the Pt100 \ RTD and

thermocouples. This oset allows to easily compensate

for errors due to dierent types of probes, which can not

be corrected by any other means. Values accepted from

-100 to 100 counts of display.

• at the ‘Thermoc. CJC’ (‘t.cJc’) parameter acvate o

deacvate the automac compensaon of the thermocou-

ple cold juncon. When working with real thermocouples,

compensaon must be set to ‘on’. When working with

electronic thermocouple simulators, it may be necessary

to deacvate the automac compensaon.

• at the ‘on break’ (‘on.bk’) parameter congure the

behavior of the instrument (and thus, the alarm behavior)

in case of sensor break. Select ‘to_h’ to force the reading

to go to high level (overrange), or select ‘to_L’) to force the

reading to low level (underrange).

• at the ‘Alpha’ (‘ALPh’) parameter select the alpha for the

Pt100 / RTD sensor. The two standard industrial values are

‘385’ and ‘390’.

Press ‘SQ’ (<) for 1 second to access the ‘conguraon

menu’. For a descripon on how to operate inside the menus

see secon 1.13.1. For a full vision of the ‘conguraon menu’

structure see secon 1.15.

Input

Pt100 / RTD 2 wires

Pt100 / RTD 3 wires

Thermocouple J

Thermocouple K

Thermocouple T

Thermocouple E

Thermocouple S

Thermocouple R

Thermocouple N

Thermocouple C

Thermocouple L

Thermocouple X

Temperature

conguraon

Degrees

Degrees Celsius

Degrees Fahrenheit

Resoluon Pt100

1º resoluon

0.1º resoluon

Reading oset

Thermoc. CJC

‘On break’

Reading to maximum

Reading to minimum

Alpha

Alpha 385

Alpha 390

1.13.3 Alarms

The instrument manages 3 independent internal alarms,

each one controlling the acvaon of an oponal

relay, transistor or control SSR output. Oponal modules

(see secon 2) are installed at the free slots inside the

instrument (see secon 1.4). LDB-24 and LDB-44 formats

have 2 free slots for output and control modules,

while LDB-26 and LDB-46 formats have 3 free slots

for output and control modules. The instrument has 3

front leds that reect the state of the 3 internal alarms.

These leds are only for local help during installaon,

as they are not appropriate for long distance reading.

Each alarm controls the acvaon of the relay,

transistor or control SSR installed on its associated slot,

and the front led.

• Congurable parameters

Each alarm has several parameters for congura-

on, starng with the usual setpoint, hysteresis and

maximum (alarm acve when reading is higher than set-

point) or minimum (alarm acve when reading is lower than

minimum) alarm types

(see Figure 8)

• Acvaon and deacvaon delays

Each alarm can congure independent acvaon and

deacvaon delays. These delays aect the alarm as

a whole, and the delay will aect the front led and the

associated relay.

• Second setpoint

Conguring a second setpoint creates ‘windowed alarms’.

The windowed alarm controls with a single relay output

if the reading is inside or outside the values dened

(see

Figure 9)

• Inverted relay

Acvate the ‘inverted relay’ funcon to invert the

acvaon logic of the associated relay.

• ‘Locked alarms’

Acvate the ‘locked alarms’ funcon will force the opera-

tor to interact with the instrument when an alarm has

been acvated. Once acvated, the alarm will remain

locked at acve state, even if the reading returns to a

value below setpoint, unl the operator manually unlocks

the alarms pressing the front key ‘LE’ (or the remote key

‘LE’, see secon 3.1).

Reading

setpoint

hysteresis

Alarm as maximum, no

hysteresis, no delays

o

acvaon

delay

o

deacvaon

delay

Alarm as maximum,

hysteresis and delays

o

Alarm as minimum, no

hysteresis, no delays

Figure 8 - Examples of alarm with 1 setpoint

Reading

Setpoint 2

Setpoint 1

Alarm as minimum

, with

double setpoint, no hyster-

esis, no delays

o

Figure 9 - Example of alarm with 2 setpoints

To congure the alarm, access the alarm menu (‘ALr1’,

‘ALr2’ or ‘ALr3’) and congure the following parameters :

• at the ‘Acve’ (‘Act’) parameter select ‘on’

• at the ‘Type of alarm’ (‘TypE’) parameter select ‘MAX’

for maximum alarm (acvates when reading is higher

than setpoint), or ‘MIn’ for minimum alarm (acvates

when reading is lower than setpoint).

• at the ‘Setpoint’ (‘SEt’) parameter congure the alarm

acvaon point. Parameter value is accessible through

‘fast access’

(see secon 1.13.6)

• at the ‘Hysteresis’ (‘hySt’) parameter select the

hysteresis value. Hysteresis applies to the alarm

deacvaon. Alarm deacvates once the reading is

beyond the setpoint plus the hysteresis value.

Hysteresis prevents relay switching in case of signal

uctuaons close to the setpoint value.

• at the ‘Acvaon delay’ (‘dEL.0’) parameter cong-

ure the delay to apply before the alarm is acvated.

Delay starts to count once the setpoint is reached.

Value from 0.0 to 99.9 seconds.

• at the ‘Deacvaon delay’ (‘dEL.1’) parameter cong-

ure the delay to apply before the alarm is deacvated.

Delay starts to count once the setpoint is reached plus

the hysteresis value. Value from 0.0 to 99.9 seconds.

• to work with ‘windowed alarms’

(see Figure 9)

acvate

‘Setpoint 2’ (‘SEt2’) to ‘on’ and then congure the

desired second setpoint value. Second setpoint must

always be higher in value than the rst setpoint.

• at the ‘Inverted relay’ (‘r.Inv’) parameter select ‘on’ to

invert the acvaon logic of the relay. Relay is inacve

when alarm is acve, and relay is acve when alarm is

inacve.

• at the ‘Locked alarm’ (‘A.Lck’) parameter select ‘on’

to block the automac alarm deacvaon. Alarm

deacvaon must be performed manually, by pressing

the ‘LE’ front buon

(see secon 1.13.8)

1.13.4 Alarms conguraon menu

Alarm 1

Setpoint

Hysteresis

Setpoint 2

Acve

Type of alarm

Alarms

Acvaon

delay

Deacvaon

delay

Inverted relay

Locked alarm

1.13.5 Display lters

The available funcons are:

• the ‘Steps’ (‘StEP’) funcon denes the reading to be

done in steps of 1, 2, 5, 10, 20 or 50 counts.

Example - selecng a step of 20 congures the reading to

change in steps of 20 counts (‘1420’, ‘1440’, ‘1460’, ...).

• the ‘Memory of maximum’ (‘MAX’) funcon displays the

maximum reading value stored in memory and allows

to reset this value. This parameter is directly accessible

using key ‘UP’ (5) (see secon 1.13.6).

• the ‘Memory of minimum’ (‘MIn’) funcon displays the

minimum reading value stored in memory and allows

to reset this value. This parameter is directly accessible

using key ‘UP’ (5) (see secon 1.13.6).

1.13.6 Fast access

The ‘fast access’ is an operator congurable menu. The

operator can access this menu with a single press of the front

key ‘UP’ (5). The congured menu entries will be accessible.

Eligible parameters to be accessed by this menu are:

• access to the alarm setpoints through the ‘UP’ (5) key

allows to read and modify the values.

• access to the maximum and minimum alarms through

the ‘UP’ (5) key allows to read and reset the values. To

reset the memory values: visualize the value on display,

press the ‘UP’ (5) key, when the ‘rSt’ message appears,

press ‘SQ’ (<) . The instrument will return to the memory

visualizaon. Press the ‘LE’ (3) key to exit his menu.

The ‘fast access’ menu is not aected by the password

funcon. This means that the conguraon menu can be

password blocked, while some congured funcons or

arameters can sll be accessible to the operator through the

‘fast access’ menu.

• Super fast access

If only a single funcon is selected for the ‘fast access’ menu,

pressing the the ‘UP’ (5) key will shortly display the funcon

name and then automacally jump to the funcon value.

1.13.7 ‘on power up’ funcon

The ‘On Power Up’ (‘on.Pu’) funcons allows to dene a

series of acons to acvate when the instrument restarts

aer a power loss. Funcons available are a delay so the

instrument waits a dened me before starng to measure

and control, and the state of the alarms at power up. The

funcons will apply only aer a restart due to power-loss,

they will not apply aer a restart due to changes in congu-

raon.

Delaying the measure and control funcons gives addional

me to elements of the system who are slower, so they can

start completely before the instrument begins to acquire

signal and control the outputs.

While on delay mode, the instrument shows all decimal points

lightened and ashing, all alarms are deacvated, and there

is no signal acquision or communicaons control. When the

delay me is over, the instrument starts its normal funcon

ing.

1.13.8 ‘LE’ key

The ‘LE’ (3) key at the front of the instrument can be cong-

ured to acvate several funcons. Only one funcon can be

assigned to the ‘LE’ (3) key. Eligible funcons are the alarm

unlock funcon (see secon 1.13.3).

All display funcons are grouped under the ‘Display’ menu.

For more informaon relang the funcons listed below see

secon 1.13.5.

• at the ‘Steps’ (‘StEP’) parameter congure the value for

the steps reading changes.

• the ‘Memory of maximum’ (‘MAX’) and ‘Memory of

minimum’ (‘MIn’) are access to the memory values. To

reset the value, select the ‘rSt’ entry and press ‘SQ’ (<).

1.13.9 Display lters conguraon menu

Display

Steps

Memory of

maximum

Memory of

minimum

Tools

1.13.10 Tools conguraon menu

Key UP

(‘Fast access’)

Memory of

maximum

Memory of

minimum

Setpoint 1

Setpoint 2

Setpoint 3

Inside the ‘Tools’ (‘tooL’) menu several dierent funcons are

grouped.

At the ‘Key UP (‘fast access’)’ (‘K.uP’) menu congure which

funcons and parameters will be accessible through the ‘fast

access’ menu. Select ‘on’ to acvate each funcon. For more

informaon see secon 1.13.6.

• the ‘Setpoint

1’ (‘ALr1’) funcon allows to visualize and

modify the alarm

1 setpoint through the ‘fast access’

menu.

• the ‘Setpoint

2’ (‘ALr2’) funcon allows to visualize and

modify the alarm

2 setpoint through the ‘fast access’

menu.

• the ‘Setpoint

3’ (‘ALr3’) funcon allows to visualize and

modify the alarm

3 setpoint through the ‘fast access’

menu.

• the ‘Memory of maximum’ (‘MAX’) or ‘Memory of

minimum’ (‘MIn’) funcons allow to visualize the maximum

or minimum reading value stored in memory.

The ‘On Power Up’ (‘on.Pu’) menu assigns funcons to be

applied when the instrument starts aer a power loss. For

more informaon see secon 1.13.7.

• at the ‘Delay’ (‘dLAy’) parameter congure the me the

instrument will wait before starng normal funconality.

Time between 0 and 200 seconds.

• at the ‘Alarm 1’ (‘ALr1’), Alarm 2 (‘ALr2’) and Alarm 3

(‘ALr3’) select ‘on’ for the alarm to be acve during the

start up aer a power loss.

On power-up

Delay Seconds

Alarm 1

Alarm 2

Alarm 3

Key ‘LE’

Alarm unlock

No funcon

The ‘LE’ (3) key at the front of the instrument can be cong-

ured to acvate several funcons. For more informaon see

secon 1.13.8.

• the ‘No funcon’ (‘nonE’) parameter assigns no funcon.

• the ‘Alarm unlock’ (‘A.Lck’) parameter assigns the manu

al alarm unlocking, when the ‘Locked alarms’ (‘A.Lck’) is

acve (see secon 1.13.3).

The output and control opons are oponal modules that

can be installed at the instrument. Formats LDB-24 and LDB-

44 have 2 free slots for output and control opons, while

formats LDB-26 and LDB-46 have 3 free slots (see secon

1.4).

Several of these oponal modules have their own

conguraon menu embedded. The ‘OPt.1’, ‘OPt.2’ and

‘OPt.3’ menu entries give access to the conguraon menu

of the opon installed.

See secon 2 for a list of available output and control

modules

Opon 1

Access to the oponal module installed at slot 1

Opon

Access to the oponal module installed at slot 2

Opon 3

Access to the oponal module installed at slot 3

At the ‘Brightness’ (‘LIGh’) menu select the intensity level

for the display . Use this funcon to adapt the brightness to

match other instruments in the vicinity or to the darkness or

clarity of your environment.

Minimum

Brightness

Maximum

Standard

The ‘Version’ (‘VEr’) menu informs about the rmware

version installed on the instrument.

Version

The password funcon blocks access to the conguraon

menu. The ‘fast access’ menu is not aected by the password

funcon. This means that the conguraon menu can be

password blocked, while some congured funcons or param-

eters can sll be accessible to the operator through the ‘fast

access’ menu.

To acve the ‘Password’ funcon select ‘on’ and introduce

the 6 digits code. The code will be requested when trying to

access the ‘conguraon menu’ (front key ‘SQ’ (<)).

1.13.11 Password conguraon

Password

At the ‘FActory conguraon’ (‘FAct’) menu select ‘yes’ to

acvate the default factory conguraon. See secon 1.14

for a list of default parameters.

Factory

conguraon

1.13.12 Default factory conguraon

1.13.13 Firmware version

1.13.14 Brightness conguraon

1.13.15 Access to the opons conguraon menu

1.14 Factory conguraon

Sensor Pt100 2 wires

Temperature conguraon

Degrees ºC

Pt100 resoluon 0.1º

Oset 0 counts

Thermocouple CJC on

‘on break’ ‘to_h’

Alpha 385

Alarms 1,2 and 3

Acve o (disabled)

Type as maximum

Setpoint 1000

Hysteresis 0 counts

Acvaon delay 0.0 seconds

Deacvaon delay 0.0 seconds

Setpoint 2 o

Inverted relay o

Locked alarms o

Display

‘Steps’ o

Maximum memory -1999

Minimum memory 9999

Tools

Fast access o

‘On Power Up’

Delay 0 seconds

Alarm 1 o

Alarm 2 o

Alarm 3 o

Ley ‘LE’ no funcon

Password o

Brightness 3

1.15 Full conguraon menu

Press ‘SQ’ (<) for 1 second to access the ‘Conguraon menu’.

Input

Steps

Display

Memory of

maximum

Memory of

minimum

Alarm 2

Alarm 3

Inverted relay

Locked alarm

Alarms

Alarm 1

Setpoint

Hysteresis

Setpoint 2

Acve

Alarm type

Acvaon

delay

Deacvaon

delay

Pt100 / RTD 2 wires

Pt100 / RTD 3 wires

Thermocouple J

Thermocouple K

Thermocouple T

Thermocouple E

Thermocouple S

Thermocouple R

Thermocouple N

Thermocouple C

Thermocouple L

Thermocouple X

Temperature

conguraon

Degrees

Degrees Celsius

Degrees Fahrenheit

Resoluon Pt100

1º resoluon

0.1º resoluon

Reading oset

Thermoc. CJC

‘On break’

Reading to maximum

Reading to minimum

Alpha

Alpha 385

Alpha 390

Tools

Key UP

(‘Fast access’)

Memory of

maximum

Memory of

maximum

Setpoint 1

Setpoint 2

Setpoint 3

On Power-Up

Delay Seconds

Alarm 1

Alarm 2

Alarm 3

Password

Firmware version

Factory

conguraon

Key ‘LE’

Alarm unlock

No funcon

Opon 1

Access to the oponal module installed at slot 1

Opon 2

Access to the oponal module installed at slot 2

Opon 3

Access to the oponal module installed at slot 3

Minimum

Brightness

Maximum

Standard

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Omega LDB-T Owner's manual

Omega LDB-T Owner's manual

Omega LDB-T Owner's manual

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