Our skilled Engineers and Technical Staff are at Client's disposal to solve doubts and technical queries, besides giving suggestions regarding the best choice of Eltra's encoder, in accordance to the specific application needs.

To request support pre- and post-sale, please fill the Technical Support Form on-line, providing all the details necessary to indentify and to help solving the problem for which the assistance is requered.

For urgent matters, please contact our Offices, from Monday to Saturday, from 09:30 A.M. to 05:30 P.M. (IST).

For enquiries regarding sales, please fill in the on-line Sales Assistance Form to receive rapidly support and information about the status of shipments and deliveries, product availability and contact details of our area distributor or reseller.

Our Sales Team will do their best to reply as soon as possible.

 

 

Eltra's encoders are developed and manufactured following all the required procedure to ensure the top quality of products, and singularly tested in our Headquarters before being delivered to the Client.  

Most of the malfunctioning of the device are due to an incorrect installation. We strongly recommend to read carefully data-sheet and all the technical documentation before proceeding with the installation of the encoder and to ensure that it's done only by qualified staff.

Please find below some of the most frequent queries that we receive and the procedure to follow in order to identify and/or solve the problem.

 

There is no encoder output

Verify that all wiring is properly connected to the control system and the correct power supply provided (please read carefully data sheet and installation instructions). Verify that the encoder shaft is moving; if there’s no motion, the encoder doesn’t produce change of status. Verify the proper connection of the device to the ground. If necessary, provide an additional external connection. Verify that the encoder output (or interface) is compatible with the control system. Verify that the cable doesn’t exceed the length: the signal power may be reduced by an excessive extension of the connection. If there’s another encoder available, make a test with the other device. If possible, test the output signals of the encoder with an oscilloscope.

The encoder is not counting correctly

Verify that the control system is compatible with the output signals/interface of the encoder. Verify potential interference/electrical noise between the encoder and the control system. Verify that the encoder is correctly fixed to the application. When employing adapters for the shaft (elastic couplings) or for the encoder (flanges), verify that they are correctly fixed (as indicated in the installation manual); if you are using adapters of other brands, make sure they are fully compatible with the encoder.

The encoder presents signal noise

Verify that power and signal cables are far from power lines. Verify that power lines have that proper filters and cable shielding. Verify that shielded and twisted cables are used and that they are connected properly to earth ground. In case of notable cable length, the use of differential signals (line driver) is suggested in order to reduce “common noises”.

Only one channel is working

Verify installation and wiring scheme for a correct connection Verify that the control system is compatible with the encoder.

The encoder is counting in only one direction (incremental encoders)

Verify the presence and correct functioning of both A and B channels. Verify that the control system is programmed to detect bidirectional signals. We suggest to test with an oscilloscope the presence of channel A and B and that they present the proper phase displacement.

Input index is not working properly

Verify the wiring. Verify that the control system is programmed to detect the input signal, also at high rotation speed.

Other possible problems

Verify not to exceed the maximum radial and axial shaft loads values, as indicated in the data-sheet. If bearings seem rough or noisy, verify the installation and alignment. Verify the encoder’s protection sealing when operating in presence of liquids and dust. Verify minimum and maximum values of operating temperature in extremely cold or hot working environments.

Our Technical Support Team is at disposal for assisting and helping to solve doubts and inquiries regarding the correct installation of Eltra's encoders. 
Please fill in the Technical Support Form to require clarification and support. 

Our Research & Development Team is continuously searching for new solutions and improvements to the electronics and mechanical performance of our transducers.

As a result of several technical modifications and implementations, the optical incremental "EL" encoder series has been updated by the new "ER" series.

The "ER" encoder series are interchangeable with the previous "EL", having the same design though with interesting application benefits: 

•  Increase of temperature range
•  Increase of operating frequency

 Please find below a comparative scheme between "EL" and "ER" series: 

	EL 30	ER 30
Operating temperature [°C]	-10 / +60	-25 / +85
Max frequency [kHz]	100	220
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	EL 38	ER 38
Operating temperature [°C]	-10 / +60	-20 / +85
Max frequency [kHz]	150	220
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	EH 40	EL 40	ER 40
Operating temperature [°C]	0 / +60	-10 / +60	-25 / +85
Max frequency [kHz]	40	150	220
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	EL 53	ER 53
Operating temperature [°C]	-10 / +60	-25 / +85
Max frequency [kHz]	300	500
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	EL 58	ER 58
Operating temperature [°C]	-10 / +60	-25 / +85
Max frequency [kHz]	300	500
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	EL 63	ER 63
Operating temperature [°C]	-10 / +60	-25 / +85
Max frequency [kHz]	300	500
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	EL 72	ER 72
Operating temperature [°C]	-10 / +60	-25 / +85
Max frequency [kHz]	300	500
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	EL 90	ER 90
Operating temperature [°C]	-10 / +60	-25 / +85
Max frequency [kHz]	300	500
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	EL 115	ER 115
Operating temperature [°C]	-10 / +60	-25 / +85
Max frequency [kHz]	300	500
Go to product page for full details