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London Electronics Limited
www.london-electronics.com help@london-electronics.com
R175X Series of Large Displays
Scaleable Ratemeters
NPN, PNP, Contact Closure, TTL, CMOS logic Inputs
Including Sensor Excitation and RS485 Data Output
Rear case screws - please note
The rear panel is held in place with finger-screws,
which only need to be gently tightened. Do not use
tools to tighten or loosen the screws, as this
could cause damage to the internal threads.
User's Manual
Rev. 11.0
Thorncote Road, Near Sandy, Bedfordshire SG19 1PU
Tel +44(0)1767 626444
30 June 2008
Doc. R17CE.pm5
1
Fax +44(0)1767 626446
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Summary of Contents for London Electronics R175X Series
- Page 1 Thorncote Road, Near Sandy, Bedfordshire SG19 1PU Tel +44(0)1767 626444 Fax +44(0)1767 626446 www.london-electronics.com help@london-electronics.com R175X Series of Large Displays Scaleable Ratemeters NPN, PNP, Contact Closure, TTL, CMOS logic Inputs Including Sensor Excitation and RS485 Data Output Rear case screws - please note The rear panel is held in place with finger-screws, which only need to be gently tightened.
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Page 2: Table Of Contents
CONTENTS. SECTION PAGE INTRODUCTION....................UNPACKING AND INSPECTION........... GENERAL INFORMATION............General specifications................INTERNAL CABLES................ Signal cables..................Mains cables..................DETAILED OPERATING INFORMATION Pulse I/P Selection................4.1.1 Jumper Functions and Positions............Typical Input connections..............RS485 output option notes..............Contact Closure Remote Programmer connections....... Programming your display.............. -
Page 3: Introduction
THE RATEMETER MODEL - R175X INTRODUCTION The R175X is one member of a broad family of Large Displays. The family is the '1700 Series', and the part number tells you a little about the display's function..R175X Tells us how many 'R' for Rate I/P inches high the digits are '17' identifies the model as... -
Page 4: Unpacking And Inspection
PLEASE check the carton’s contents as soon as possible after receipt, to detect any transit damage or losses.Unpack the contents and check each item in the box against the check list below to make sure you have all items. Check List : Handbook Display Mounting kit ( where appropriate ) -
Page 5: General Specifications
GENERAL SPECIFICATIONS Display type Scaleable rate/frequency meter, adjustable averaging and resolution Signal inputs Contact closure, NPN, PNP, 5V TTL/CMOS, 24VDC Debounce jumpers available, limiting inputs to <10Hz. Max I/P rate without debounce = 10Khz. Input Resistances: 2200 Ohms if internal pull-up/down enabled. Otherwise 10M Excitation Supply: Nominally 13VDC at 60mA max. -
Page 6: Internal Cables
3.0 INTERNAL CABLES The units are supplied with approximately 2 metres of free ended cable for mains, signal and serial ports. You may connect your own cable to this, via a junction box, or completely remove the supplied cable and install your own. -
Page 7: Pulse I/P Selection
Remote Programmer Pulse Input = Common Yellow = + Sig.Excitation Yellow =Menu/Reset = Input A Green = Select Green = Input B Power Blue = Increment Blue = Common (-) Brown = AC Hi Blue = AC Lo Gn/Yw = Ground Serial O/P Option Blue = A Green = B... -
Page 8: Typical Input Connections
SIGNAL, DATA AND CONTACT CLOSURE CONNECTIONS Typical Input Connections The most common input sensor types are shown below, with a wiring guide, to assist you in the installation of your totaliser. Only one input is shown, as they both have identical input circuitry. Because the pullup resistors are not independent ( both inputs will be pulled up or down), you should choose sensors which require the same pullup format, if using both inputs. -
Page 9: Contact Closure Remote Programmer Connections
PROGRAMMING YOUR DISPLAY The Ratemeter offers useful flexibility in scaling and display presentation, and all parameters are adjusted by using the three contact closure programming pushbuttons. It is worth spending a little time familiarising yourself with the menu and the programming technique before carrying out a full calibration. -
Page 10: The Programming Menu & Brightness Adjustment
The Programming Menu As you enter the menu, prompts will appear on the display. Because they are formed with simple 7 segment displays, they do not appear to be familiar letter shapes, but are described in detail here. SCALE This is the scale factor, which allows you to multiply or divide the input frequency (in Hz.) by a constant. -
Page 11: Programming Flow Chart
1 2 3 4 5 6 7 1 2 3 4 5 6 7 1 2 3 4 5 1 2 3 4 5 1 2 3 4 5 6 7 1 2 3 4 5 1 2 3 4 5 1 2 3 4 5 6 7 1 2 3 4 5 1 2 3 4 5... -
Page 12: Application Example
Application Example Below is a commonly encountered application, with details of suggested configurations, to aid in commissioning your ratemeter. Please feel free to call our Application Engineering Department for assistance with your particular application, if you so wish, and we shall be pleased to help you. Counting rate of objects passing along a conveyor.. -
Page 13: Installation
INSTALLATION If possible position the display away from heat and direct sunlight on the display face. The displays should not be exposed to substances liable to damage uPVC, acrylic or glass. If mounted outside, the display should be protected by a shroud to limit direct falls of rain, the cooling effect of which can give rise to the display sucking in moisture. -
Page 14: Mounting Positions
MOUNTING POSITIONS Case sizes are subject to change, so we recommend you refer to our datasheet at http://www.london-electronics.com/pdf/1700.pdf for latest details General specifications for the 1700 series For the standard-stock single line displays: Case Material : uPVC, welded. Gasket Material: Neoprene Sealing screws: Stainless Steel Case dimensions* Panel Cutout dimensions... -
Page 15: Multiple Display Mounting
TROUBLE SHOOTING AND MAINTENANCE The Large displays have been designed to provide a long trouble-free life and require no routine maintenance. An annual calibration check is recommended. The front lens may be cleaned with a proprietary window cleaner, and the case may be hosed down, and cleaned with a cloth dampened with mild detergent. -
Page 16: Warranty
In the event of a defect during the warranty period, the unit should be returned, freight( and all duties and taxes ) prepaid by the Buyer to the authorised London Electronics Ltd. distributor from where the unit was purchased. The Distributor, at its option, will repair or replace the defective unit. The unit will be returned to the Buyer with freight charges prepaid by the distributor. -
Page 17: Other London Products
Torque transducers RS232, RS485, RS422, 20mA TTY We also produce Custom special instruments, designed for you from your requirement specifications Large Displays Other forms of large displays manufactured by London Electronics Ltd. include..Serial Input remote displays Ratemeters Proces Indicators... -
Page 18: And Finally
, please let us know and we will give your suggestions serious consideration. Please complete the section below and return it to us as soon as possible so that changes can be made without delay. Thank you for choosing products from LONDON ELECTRONICS LTD. ! NAME_____________________________JOB FUNCTION____________________________ COMPANY____________________________________________________________________ ADDRESS____________________________________________________________________... - Page 19 NOTES...
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Page 20: Declaration Of Conformity
All signal cabling shall be screened. The screen shall only be terminated to the power earth terminal This certificate applies only to meters carrying Serial Numbers 601001 or higher. Signed as true and correct, for and on behalf of London Electronics Ltd. J.R. Lees...