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London Electronics Limited
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
Large display pulse input counter & frequency meter
EasyReader Model ER2C
Connection details, scaling and general information
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.
Document Ref: manuals\english\EasyReader\EasyReader_2C.p65
Dated: 30 June 2009
Rev. 4
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Related Manuals for London Electronics EasyReader ER2C
Summary of Contents for London Electronics EasyReader ER2C
- Page 1 London Electronics Limited 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 Large display pulse input counter & frequency meter EasyReader Model ER2C Connection details, scaling and general information 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 3: Alphabetic Index
Alphabetic Index Warnings - Read First ! Connections Wiring and jumper record sheet Declaration of Conformity Front Panel controls General Description Getting Started Input stage circuit Introduction Input connection examples Lockout connection 5,7, 8 MIN/MAX button 9, 10, Mounting methods 13, 14 Peak reading memory 9, 10... - Page 4 Introduction Please contact us if you need help, if you have a complaint, or if you have suggestions to help us improve our products or services for you. If you contact us about a product you already have, please tell us the full model number and serial number, so that we can give you accurate and fast help.
- Page 5 Please carefully read all warnings and ONLY install the meter when you are sure that you’ve covered all aspects. Connect the meter according to current IEE regulations and separate all wiring according to IEC1010. Power supplies to this equipment must have anti-surge (T) fuses at 125mA for 230V supply, 250mA for 110V supply or 1A for DC supplies in the range 11-30VDC.
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Page 6: General Description
General Description The EasyReader C displays are large versions of the popular “Intuitive” counter and ratemeter family. They accept pulse inputs from digital sensors such as NPN, PNP or contact closure proximity detectors. Their main function is to monitor production lines, counting items and monitoring rate of production, but they can also be used for accurate measurement of frequency and speed. -
Page 7: Getting Started
Getting Started First, check that the display will suit your application and the available power source (either 95-265 VAC or 11-30 VDC). If you asked us to configure the display for you, please check that the scaling and settings agree with your requirements. - Page 8 Connections We supply detachable screw terminal connectors to make installation as easy as possible for you. You should use multistrand insulated wire with ferrules to DIN46228/1. You can use stripped wire with cross sectional area from 0.5 to 2.5mm . Strip back insulation 7mm. You can operate the Tare, You may want to see the input O f f...
- Page 9 Modes The EasyReader-C has 7 display modes to suit various counting and rate measurement functions. Here is how to select one of these modes:- 1. Connect the Lockout terminal to the Common terminal, then apply power to the display 2. Press the Mode button for 3 seconds, then release. 3.
- Page 10 Scaling for the 6 Counter modes... On the previous page, you saw how to select from one of 7 different modes. The first 6 modes are all counter functions, which all have the same method of scaling. To select a mode, you pressed OK. If you selected one of the first 6 counter modes, your display should now show:- Pulses In The value you can set for...
- Page 11 Scaling for the Ratemeter Mode The Ratemeter mode is ideal if you want to measure Frequency, Speed, Rate of production etc. Frequency In (Hz.) The value you can set for each of these 3 variables Display You’ll see one digit brighter than the others - this means you can change its value with the UP or The scaling method is simple.
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Page 12: Contact Closure Inputs
Contact closure inputs The contact closure inputs allow you to operate the Max/Min and reset functions remotely, but only when the meter is ‘locked’. The switched signal is 5V DC at a current of 1.5mA Remote contact-closure inputs Common not used not used Min/Max Peak/Valley... -
Page 13: Front Panel Controls
Front panel controls Control Type 4 pushbutton switches located behind a flexible overlay. Function Depends on whether locked or in setup mode. Also depends on remote input contact status - see below.. Mode Digit Max/Min Reset Contact-closure inputs are used to activate front-panel buttons Common not used not used... -
Page 14: Specifications
Specifications Bezel size 260mm wide x 140mm high Case Depth 75mm Weight 600 grammes Case Material Black uPVC with Acrylic lens Connectors Internal Detachable Screw Terminal connectors Operating Temp. 0 to 50 degrees C, non condensing humidity Storage Temp. -20 to 70 degrees C Power supply 95-265 VAC or 11-30 VDC optional Power consumption... - Page 15 Notes Circuit diagram showing one of the two input stages. This shows the pullup, debounce and sensitivity setting methods. Excitation + Input + Input comparator Threshold Pull Up 0.1uF Pull Down Debounce 20mV Common...
- Page 16 How to Mount your display 1. Wall Mounting Wall mount your EasyReader display in a clean, dry environment. Drill 4 holes in your wall, spaced as you see in this diagram... The mounting screws you use should have a diameter between 3.4 and 4.6 mm and should be suitable for the material of the wall.
- Page 17 How to Mount your display ... continued 1. Suspension Mounting Suspension mount your EasyReader display in a clean, dry environment. The mounting screws you use should have a diameter between 3.2 and 3.8 mm and should be suitable for the supporting material. You may need to use screw plugs or other screw accessories, if the material is not suitable to take screws directly.
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Page 18: Record Of Revisions
Record of Revisions 30 January 2004 Product released 16 February 2004 Added input stage diagram to page 12 25 March 2004 Added wiring and jumper record sheet on page 16 30 June 2009 Address updated... - Page 19 Wiring and jumper record For future reference, record all the jumper positions and wiring colours you used in your installation.
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Page 20: Declaration Of Conformity
Signal cabling shall be routed separately to power carrying cabling (includes relay output wiring) All signal cabling shall be screened. The screen shall only be terminated to the power earth terminal Declared as true and correct, for and on behalf of London Electronics Ltd. J.R.Lees...