Quick Links. Download this manual. Table of Contents. Digital Controller.
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Quick Links. Download this manual. Table of Contents. Digital Controller. Programmable Type. Chapters Table Of Contents 9 2. Machine automation controller nx-series position interface units pages.
No part of this publication may be reproduced, stored in a retrieval system, or trans- mitted, in any form, or by any means, mechanical, electronic, photocopying, recording, recording, or other- wise, without the prior written permission of OMRON. Page 3 Conventions Used in This Manual J Meanings of Abbreviations Sometimes the following abbreviations are used in parameter names, figures and in text explanations. These abbreviations mean the following.
Page 4 The following conventions are used to indicate and classify precautions in this manual. Al- ways heed the information provided with them. Failure to heed precautions can result in inju- ry to people or damage to the product. D Setting up the E5EK Page 6 Pay Attention to the Following when Installing this Controller F If you remove the controller from its case, never touch nor apply shock to the elec- tronic parts inside.
F Do not cover the area around the E5EK. Ensure sufficient space around the control- ler to allow heat radiation. Page 7 This chapter introduces the E5EK.
First-time users should read this chapter with- out fail. For details on how to use the controller and parameter settings, see Chapters 2 onwards. Page First-time users should read this chapter without fail.
Page About The Displays Each press of this key switches between the auto and manual opera- tions. The functions of this key change according to how long it is pressed. If the key is pressed for less than one second, the parameters are switched. Page Specifications Assign these output functions to control output 1, control output 2, auxiliary output 1, and auxiliary output 2.
However, note that as control output 1 is used as the open output and control output 2 is used as close output on a position-proportional type controller E5EK-PRR2 , control outputs 1 and 2 cannot be used as assignment destinations. Page 15 F Option mode This is the mode for setting option functions.
You can select this mode only when the option unit is set in the controller. In this mode, you can Page Output 1 second min. If you select the desired mode using the When another mode is selected while in these modes, reset is canceled. Page About The Communications Function 1. If the communications function is required, add on the communications unit. For details on the communications function, refer to Chapter 6. So, the user need not calibrate the E5EK controller during regular use.
However, if the E5EK controller must be calibrated by the user, use the parameters provided for user to calibrate temperature input, analog input voltage, current and transfer output. Page Setting Up 2 Draw out the internal mechanism towards you holding both sides of the front panel. Fixing Screw for Tighten this screw by a torque of 0. Front Panel Page 29 2. Page 30 Nos. Connect the input as fol- lows: 4 to 20 mA About the power Page Wiring Terminals 2.
How- ever, note that terminal Nos. Page 35 This description assumes that the controller is operated under the fol- lowing conditions. For details on selecting the menu display, see page Page Setting Output Specifications Error 3; RSP input error With control output cool , the conditions for switching from standard control to heating and cooling control are reached when the output function is assigned at the cooling side during heating and cooling control.
In other words, heating and cooling control is carried out when con- trol output cool is assigned, and standard control is carried out when output is not assigned. Page 39 setup mode. Though a shorter pulse period provides better control performance, the control period should be set taking the life expectancy of the output unit into consideration when the output unit is relay.
The parameter default is [ 4 As the setting in this example is to be left as it is, press the key. Page Setting Alarm Type 3. Of these, only the alarm assigned as the output can be used. Page 43 1 second min. In an open status, only control output 1 is ON. In a close status, only control output 2 is ON. When a potentiometer is not connected to the controller,  is dis- played on the No.
For details on the setting ranges of these parameters, see chapter 5 Level 1 Mode page Read this chapter while referring to the parameter descriptions in chapter 5. Set- ting a positive value produces a dead band, while setting a negative value produces an overlap band. Page Position-Proportional Control However, be sure to execute motor calibra- tion after connecting the potentiometer. So, 3-position control is made possible. Dead band Hysteresis heat Page Operating Condition Restrictions The upper limit is set for the heating side positive value , and the lower limit is set for the cooling side negative value as shown in the follow- ing figure.
Page Set Point Limiter However, note that when the set point limiter is reset, the set point is forcibly changed to the upper-or lower-limit value of the set point limiter if the set point is out of the limiter range. Also, when the input type, temperature unit and scaling sensor range are changed, set point limiter is forcibly reset to the scaling sensor range.
In this case, operation is carried out with the process value regarded as the set point before the change was made. However, note that these parameters can not be set when the mul- ti-SP function is not selected.
The following table shows the relation- ship between event inputs and set points 0 to 3. If the heater power supply is turned conditions ON after turning the E5EK power supply On, the heater burnout alarm is output.
Page 66 1 Set output to maximum. Use this chapter as a reference guide. Conventions Used in this Chapter Protect Mode. Page 70 On the E5EK controller, only parameters that can be used are displayed.
However, note that the settings of protected parameters are still valid, and are not displayed regardless of the conditions of use. In other words, you cannot switch between the auto and manual operations by key operation.
Page 73 If this mode is switched to during auto-tuning, auto-tuning is canceled. To exit this mode, press the key for 1 second minimum. The set point can be set. Page 76 SP ramp function is enabled. Function Unit There is no order of prior- ity in key operations. Page 78 AT auto-tuning , setting the alarm values, set- ting the control period, and setting PID parameters. A nega- tive setting sets an overlap band. Function Unit Default Setting Range Page 84 PID control, standard con- trol or heating and cooling control.
Set the control period taking the control characteris- tics and life expectancy of the controller into consideration. The display changes to the menu display.
When the manipulated variable calculated by the E5EK controller is outside of the upper-and lower-limit range, the upper limit Function or lower limit set to these parameters is output, respectively. The following figures shows the effect on data after passing through the digital filter. Function PV before passing through filter PV after passing through filter 0. Page 92 3.
Set value Input Type However, note that the OUT1 LED does not light when control output heat or control output cool are assigned to linear outputs such as current and voltage.
For details of operation at an alarm, see page The display changes to the menu dis- play. During operation of the ST function, the power on the load side connected to the control output must be turned ON at the same time or before start of E5EK Function operation.
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