Displaying Temperature, Process, Rate and Time

Features

Bright 60 or 100 mm (2.3 or 4") red or green digits

Full NEMA 4 (IP65) metal enclosure

Wall suspension or panel mount

Control, alarm and retransmission capability with field installable cards

Power options of 85 to 260 Vac and 11 to 36 Vdc. Sensor power built-in where required.

Temperature: thermocouples K, T, J, E, R, S, N, C; RTD/Pt100

Display of current, max or min values

Clock: time, timer with start, stop and reset

Remote display: ASCII RS232, RS485, Modbus RTU

Process: 4 to 20 mA, 0 to 20 mA, ±10 Vdc, 0 to 10 Vdc

Rate, total, count, period: PNP, NPN, Namur, Inductive, TTL, Quadrature

Applications

Ideal for informing customers and colleagues of key information

Time keeping, productivity, targets, output, incident free days

Product/piece counting or production rate indication

Description

The LDB Series of large displays offer a wide range of display, measurement and alarm capabilities for all types of commercial and industrial applications. Data is visible by a large audience at distances of up to 50 m (160').

These displays offer the ability to provide control, alarms, and/or retransmission of measured data. Field-installable options are also available for analog retransmission signals, transistor or relay outputs, SSR controls, as well as communications in Modbus RTU, RS232 or RS485 ASCII protocols. For reliable performance and protection, all circuits are isolated.

The LDB series includes a full NEMA 4 (IP65) metallic housing, and can be wall mounted, panel mounted or suspended. Easy configuration is possible using the front keypad, while an optional remote keypad is also available.

The front lens is made using anti-reflective tinted methacrylate. This allows sharp and clear reading, even at long distances. In addition, adjustments in brightness are possible, with 5 levels of LED brightness available to suit most environments.

Specifications

Display Digits & Range: Six 999999/-199999 or four 9999/-1999

Decimal Point: Configurable

LED Color: Red standard; Green optional

Digit Height: 60 mm (2.36") or 100 mm (4")

Operating Temperature: 0 to 50 °C (32 to 122 °F)

Storage Temperature: -20 to 70 °C (-4 to 158 °F)

Connections: Plug-in screw terminal

Signal Wire Diameter: Max. 0.5 mm²

Power Wire Diameter: Max. 2.5 mm²

Process Meter

Signal Ranges: 4 to 20 mA, 0 to 10 Vdc, ±20 mA, ±10 Vdc

Excitation Voltage: 20 Vdc, 15 Vdc, 10 Vdc, 5 Vdc (max. 35 mA)

Accuracy: 0.05% F.S. ±1 digit

Offset Drift: 10 ppm/ºC

Span Drift: 25 ppm/ºC (includes offset drift)

Read Rate: 15 readings/second

Refresh Rate: 15/second

Response Time: <120 mSec. (0 to 99% signal)

Input impedance: 11 Ohm for mA, 932 k(O) for Vdc

Temperature Meter (4-Digit Only)

Pt100: 2 or 3 wire

Resolution: 1º or 0.1º

Measuring Range: 800 to -200 ºC (1472 to -328 ºF)

Accuracy: ±0.2º

Cable Compensation: Automatic up to 14 Ω

Offset Drift: 0.05%

Span Drift: 0.10% (includes offset drift)

Thermocouples: J, K, T, E, S, R, N, C, L

Resolution: 1º

Measuring Ranges: See user manual

Accuracy: ±2º to ±4º depending on thermocouple type

Thermocouple Cold Junction: Automatic (configurable)

Offset Drift: 0.05 to 0.2%

Span Drift: 0.02 to 0.2% (includes offset drift)

Rate, Total Meter

Signals Accepted: NPN, PNP, Namur, pick-up, TTL, inductive, mechanical, quadrature

Excitation Voltage: 5 Vdc, 9 Vdc, 15 Vdc, 18 Vdc (max. 70 mA)

Maximum Vdc at Input Terminals: ±30 Vdc

Quartz Accuracy: ±0.01%

Thermal Stability: 20 ppm/ºC

Display Refresh: 15/second

Maximum Frequencies:

Counter: up to 250 KHz

Rate Meter and Period: meter up to 500 KHz

Minimum Frequencies: Rate meter and period meter down to 1 mHz (0.001 Hz)

Clock, Timer, Chronometer

Reading, Formats:

4-Digit: mm.ss, hh.mm, dd.hh, ssss, sss.s, ss.ss, mmmm, mmm.m, mm.mm, hhhh, hhh.h, hh.hh

6-Digit: mm.ss.cc, hh.mm.ss, dd.hh.mm, mmmm.ss, hhhh.mm, dddd.hh, ssssss, sssss.s, ssss.ss, mmmmmm, mmmmm.m, mmmm.mm, hhhhhh, hhhhh.h, hhhh.hh (c=1/100 sec, s=sec., m=min., h=hour, d=day)

Counting Direction: Up, down

Controls: Start, stop, reset

Control Activation: Volt-free contact (default), configurable for push-pull, NPN, PNP, inductive

Maximum Vdc at Input Terminals: ±30 Vdc

Reset Control: Remote, front panel and on alarm

Accuracy: 100 ppm

Display Refresh: 12/second, reading memory maintained in case of power loss

Modbus RTU, RS485, RS232 Meter

Common:

Speed: 38,400 bps to 600 bps

Data Format: 8n1, 8e1, 8o1,8n2, Bus terminator not included, Watchdog configurable from 1 to 120 seconds

Modbus RTU:

Bus: RS485

Function: “slave” for Modbus RTU protocol

Addresses: 1 to 247

RS485:

Protocol: ASCII

Bus: RS485

Function: Repeater for ASCII code

Addresses: 1 to 31

RS232:

Protocol: ASCII

Bus: RS232

Function: Repeater for ASCII code

Addresses: 1 to 31 (“daisy-chain” connections)