Laurel Electronics for Digital Panel Meters, Counters, Timers, Transmitters, Digital Displays

Digital Panel Meters - Counters - Timers - DIN Rail Transmitters - Large Digit Displays

   

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Laureate™ Serially Driven 6-Digit
Panel Meter & Remote Display

 With optional analog output & setpoint control capabilities

Laurel 6-digit serial input panel meter and remote display
CE Mark   UL Mark RoHS Mark

Features

  • 6-digit numeric display of received serial data.
  • Optional dual relay output based on reading or control characters.
  • Optional analog output scaled to reading.
  • Choice serial interfaces: RS232, RS485 or Modbus RS485.
  • Choice of Modbus RTU, Modbus ASCII, or Laurel ASCII protocols (software selectable).
  • Choice of power options: worldwide 95-240 Vac ±10% power or low voltage AC or DC power.
  • 1/8 DIN case with NEMA-4X (IP-65) front panel.
  • Same appearance as Laure digital panel meters, counters and timers.
  • Certified to UL 61010C-1 (UL mark), EN 61010-1 (CE mark), and RoHS.

Description

Laureate™ Serial Input Meters and Remote Displays accept RS-232, RS-485, or Modbus RS-485 data from computers, programmable controllers, Laureate meters, Laureate counters, and other devices with a serial data output. They blend in with 1/8 DIN Laureate digital panel meters, counters and timers to provide a numeric display from -999,999 to +999,999. They can also provide relay closures and an analog output based on the received serial data.

The display consists of six 14.2 mm (.56") high LED digits, available in red or green. The 1/8 DIN case is environmentally sealed to NEMA-4X from the front when panel mounted. Worldwide input power from 95-240 Vac ±10% is standard. Low voltage input power from 12-30 Vac or 10-48 Vdc is optional.

Choice of Three Serial Interface Boards and Three Protocols

1. The Laureate RS-232 board features a single 6-pin RJ11 jack and is intended for point-to-point communications with a computer, a PLC, or other device with an RS-232 port. Normally there is only one Laureate per RS-232 line.

2.  Laureate RS-485 boards allow multiple Laureates plus non-Laureate devices to be connected to the same RS-485 line in parallel, multidrop fashion, thereby minimizing wiring. Each unit will only display the value transmitted for its unique address. The recognition character preceding the address is programmable.

The standard RS-485 board features two RJ11 jacks, while the Modbus RS-485 board features two RJ45 jacks. Dual jacks allow daisy chaining without use of a hub. Transmission distances up to one mile a possible with RS-485, and the board at the end of the line can be terminated by a jumper-selectable 120-ohm resistor to minimize signal reflections. A full-duplex mode with separate wire pairs for transmit and receive is selectable, as is a half-duplex mode with shared transmit and receive wires. For details, please see our Serial Communications Manual. For impedance reasons, a maximum of 31 Laureates can be connected the same RS-485 data line, while only 5 Laureates can be connected to the same RS-232 line.

Three serial protocols are software selectable for all serial interface boards: Modbus RTU, Modbus ASCII, and Laurel ASCII. An industry-standard Modbus protocol allows devices by different manufacturers to share the same data line, but the Laurel protocol is simpler and is recommended when all devices on the line are Laureates.

Interface to Laureates

All Laureate meters, counters and timers allow the display of the sending unit to be duplicated by a remote display.

The simultaneous display of multiple parameters using multiple remote displays is possible if the sending unit is a Laureate counter equipped with an FR (frequency) or VF (voltage-to-frequency) signal conditioner board. The sending unit may be set up to display any of up to four parameters: Item #1, Item #2, Item #3 or peak. These four parameters are transmitted in sequence in the data string, and a remote display can be set up to display any one item from that sequence.

One possibility is to install up to three remote displays in the same control panel as the main Laureate counter to augment its single display. For example, a Batch Controller can show the batch total, and remote displays can show rate, peak rate, and either grand total or number of batches. A yellow indicator light shows which item in the transmitted sequence has been chosen for display.

Isolated Analog Output Option

A Laureate remote display can be equipped with an optional isolated analog output board with 0-10 V and 4-20 mA outputs to serve as a low-cost digital-to-analog converter. Either output can be scaled to the displayed value. With this board, the remote display can drive a chart recorder or serve as a highly accurate, isolated 4-20 mA transmitter.

Alarm & Setpoint Control Options

Each Laureate remote display can also be equipped with a relay output board with dual contact relays or dual opto-isolated AC/DC solid state relays to provide remote alarm and setpoint control capability.

  • The relays can respond to the data values transmitted via RS-232/485. The setpoints can be programmed locally from the front panel of the remote display or remotely via RS-232/485.
       
  • The relays can respond to any of eight serially transmitted control characters. These can be generated by a Laureate meter, counter or timer, thereby assuring that the local and remote alarm points are identical.

Specifications

Display
Readout
Range
Indicators
6 LED digits, 7-segment, 14.2 mm (.56"), red or green
-999999 to +999999
Four LED lamps
Serial Interface (selectable)
Board Selections
Protocols
Data Rates
Digital Addresses
Isolation
RS232, RS485, Modbus RS485
Modbus RTU, Modbus ASCII, simpler Laurel ASCII
300 to 19200 bps
247 (Modbus), 31 (Laurel ASCII),
250V rms working, 2.3 kV rms per 1 min test
Power
Voltage, standard
Voltage, optional
Frequency
Power Isolation
95-240 Vac ±10% or 90-300 Vdc (DC operation not UL approved)
12-30 Vac or 10-48 Vdc
DC or 47-63 Hz
250V rms working, 2.3 kV rms per 1 min test
Analog Output (optional)
Output levels
Compliance
Scaling
Resolution
Isolation
0-10V, 0-20 mA, 4-20 mA (jumper selectable)
2 mA at 10V ( > 5 kOhm), 12V at 20 mA ( < 60 ohms)
Zero and full scale adjustable from -999999 to +999999
12 bits (0.025% of full scale)
250V rms working, 2.3 kV rms per 1 min test
Dual Contact Relay Outputs (optional)
Relay Type
Load Rating
Isolation
Form C
8A at 250 Vac or 24 Vdc
250V rms working, 2.3 kV rms per 1 min test
Dual Solid State Relay Outputs (optional)
Relay Type
Load Rating
Isolation
SPST, normally open, Form A
120 mA at 130 Vac or 170 Vdc, 28 ohms series resistance
250V rms working, 2.3 kV rms per 1 min test
Environmental
Operating Temp.
Storage Temp.
Relative Humidity
Protection
0°C to 60°C
-40°C to 85°C
95% at 40°C, non-condensing
NEMA-4X (IP-65) when panel mounted
Displayable Parameters when Connected to Laureate Counters
FR (Frequency)
Sig Conditioner,
Non-extended

Item #1: Rate A, total A, time interval, period A
Item #2: Rate B, total B, period B

FR (Frequency)
Sig Conditioner,
Extended

Item #1: Rate A, total A, rate B, total B, time interval, phase, A+B, A-B, AxB, A/B, A/B-1, batch total, stopwatch.
Item #2: Rate A, total A, rate B, total B, period B, batch grand total, number of batches, accumulated time.
Item #3: Rate B, total B, rate derived from batch, period B.

VF (V-to-F)
Sig Conditioner,
Extended

Item #1: Rate, total, batch total.
Item #2: Rate, total, batch grand total, number of batches.
Item #3: Batch rate

Application Examples

Remote Displays Driven by a Computer

Remote digital displays addressed on a single RS-485 serial data line

Remote Displays Augmenting a Laureate Counter

Slave displays augmenting a Laureate digital counter The display of a Laureate counter can be augmented by up to three slave displays to show up to four parameters simultaneously: Items #1, #2, #3 and peak rate (if rate was one of the selected items). All four parameters can also be displayed at a remote location.

Ordering Guide
Laureate™ 6-Digit Remote Displays

 Click on the radio buttons to build a model number with pricing.

  Quantity
Display
Color
L5  Green LEDs
L6  Red LEDs
$170
$170
Power Isolated 95-240 Vac ±10%
Isolated 12-30 Vac or 10-48 Vdc
NC
$30
Setpoint
Output
None
Dual 8A Contact Relays
Isolated Dual Solid State Relays
NC
$80

$55
Analog
Output
None
Isolated 0-20 mA & 0-10 V
NC
$90
Digital
Interface
Isolated RS-232
Isolated RS-485
Isolated Modbus RS-485
$60
$80

$90
  Note: Laureate Remote Displays can display digital data received via RS-232 or RS-485 from any source. They can also provide alarms and an isolated analog output scaled to the display.  
Add-on
Options
EB  Extra bight red LED display
BL  Blank lens without button pads
CBL01  RJ11-to-DB9 cable
CBL02  USB-to-DB9 adapter
IPC 
Clear front panel cover sealed to NEMA 4X / IP65
BOX1 
NEMA-4X wall-mount enclosure with 1/8 DIN cutout
BOX2 
BOX1 plus IPC
$30
NC

$19

$39

$40

$140

$180
 
Configured model number L50001
Configured price per model $230
Quantity 1
Extended price $230
 

 

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Laurel Electronics, Inc.
Industrial Instrumentation & Displays
3183-G Airway Avenue
Costa Mesa, CA 92626, USA
Tel:      
Fax:
     
(714) 434-6131
(714) 434-3766

  
© 1996-2008 Laurel Electronics, Inc.