Omron E5ZN Series - User Manual

E5ZN Operation
CSM_E5ZN_operation_TG_E_2_2
1
Nomenclature
E5ZN (Orders for the E5ZN series will not be accepted after March 31, 2019.)
• The E5ZN is a Temperature Controller that features the ability to be built into equipment.
• The E5ZN is equipped with RS-485 communications, so process values can be monitored and parameters can be read or written from the host
system.
• The Terminal Unit can be separated from the Controller, so maintenance can be performed on the Controller without changing the wiring.
• If two or more Controllers are connected to the same host system, use an expansion Terminal Unit and close mounting to safe space and
reduce wiring.
Using Setting Switches
Controller Front panel
Terminal Unit
Standard Model Expansion Model
Baud Rate
Operation Indicators
Unit Number Switch
Set the baud rate of the Controller to match the baud rate of the host system.
• POWER
Lights when power is turned ON.
• ERROR
Lights when an input error (e.g., memory error or input error for any channel) occurs.
• SD/RD (Send Data/Receive Data)
Light during communications with the host.
• OUT1, OUT2 (Control Output 1, Control Output 2)
Light when the control output 1 or the control output 2 functions are ON.
• SUB1, SUB2 (Auxiliary Output 1, Auxiliary Output 2)
Light when the auxiliary output 1 or the auxiliary output 2 functions are ON.
Front Panel
Set the unit number to identify the Controller connected to the host system and to the Setting Display Unit
(E5ZN-SDL).
The unit number is hexadecimal.
Switch settings 0 to F correspond to unit numbers 00 to 15.
Set a different unit number for each E5ZN if more than one is connected using RS-485 communications.
Communications cannot be performed if the same unit number is used more than once on the same line.
Setting 0
00
1
01
Default setting
Default setting
2
02
3
03
4
04
5
05
6
06
7
07
8
08
9
09
A
10
B
11
C
12
D
13
E
14
F
15Unit number
Setting 0
4800
1
9600
2
19200
3
38400
456
Do not set.
789
Baud rate (bps)
0
1
2
3
4
5
9
8
7
6
0
1
2
3
4
5
6
7
F
E
D
C
B
A
9
8

Summary

E5 ZN Operation Nomenclature

Using Setting Switches

Unit Number Switch

Configures the unit number for controller identification on the host system.

Baud Rate

Sets the communication baud rate to match the host system.

Operation Indicators

Explains the meaning of the indicator lights on the front panel.

Mounting

Dimensions

Shows the physical dimensions of the Terminal Unit E5ZN-SCT24S and E5ZN-SCT18S.

Mounting Terminal Units Together

Details how to connect multiple Terminal Units using interlocking connectors.

Mounting to the DIN Track

Mounting the Controller

Step-by-step procedure for mounting the controller onto the DIN track.

Removing the Controller

Instructions on how to detach the controller from the DIN track.

Setup Guidance

Typical Example 1

Demonstrates a setup procedure for ON/OFF control with an upper limit alarm.

Setup Procedure

Guides through the step-by-step process of setting up the controller.

Typical Example 2

Setup Procedure

Illustrates the setup process for PID control with auto-tuning.

Using Copy Mode

Upload (Temperature Controller to Setting Display Unit)

Details the process of transferring settings from the controller to the display unit.

Download (Setting Display Unit to Temperature Controller)

Describes how to transfer settings from the display unit back to the controller.

Operating Procedure Overview

Description of Modes

Outlines the different operating modes and their functions.

Description of Modes

Protect Level

Mode for preventing parameter modification.

Operation Level

Default mode for monitoring PV, SP, MV, and alarms.

Adjustment Level

Mode for setting control values and offsets, including auto-tuning.

Initial Setting Level

Mode for specifying input type, control method, and alarm types.

Advanced Function Setting Level

Mode for advanced settings like MV limits and standby sequences.

Communications Setting Level

Mode for configuring communication settings with a host device.

Operation

Advanced function setting level

Details parameters available in the advanced function setting level.

Communications setting level

Details parameters available in the communications setting level.

Initial setting value

Lists parameters for initial setup, like input type and scaling.

Input Type

Output Assignments

Table showing default functions assigned to output terminals.

Resistance Thermometer Input

Specifies input types and ranges for resistance thermometers.

Thermocouple Input

Lists thermocouple types, ranges, and corresponding set values.

Alarm Type

Alarms 1 and 2

Details alarm types and output configurations for alarms 1 and 2.

Alarm 3

Details alarm types and output configurations for alarm 3.

Error Displays

Overview

1. Function Description
2. Usage Features
3. Maintenance Features

The E5ZN is a temperature controller designed for integration into equipment. It offers robust functionality for monitoring and control, with a focus on ease of use and maintenance.

Function Description

The E5ZN is equipped with RS-485 communications, allowing process values to be monitored and parameters to be read or written from a host system. This enables centralized control and data acquisition, making it suitable for complex industrial applications where multiple controllers need to be managed from a single point. The device supports various input types, including resistance thermometers and thermocouples, allowing for flexible temperature measurement across different ranges. Output assignments are configurable, with default functions for control outputs (heating/cooling) and auxiliary outputs (alarms, transfer outputs for PV, SP, or MV). This flexibility allows the E5ZN to adapt to diverse control strategies and system requirements.

The controller operates through several distinct levels: Protect Level, Operation Level, Adjustment Level, Initial Setting Level, Advanced Function Setting Level, and Communications Setting Level. Each level provides access to specific parameters and functions, ensuring a structured approach to configuration and operation. The Protect Level safeguards against unintended modifications, while the Operation Level allows monitoring of process values, set points, and control outputs during normal operation. The Adjustment Level is used for fine-tuning control parameters, including auto-tuning, hysteresis, and PID constants. Initial Setting Level covers fundamental settings like input type, control method, and alarm type. Advanced Function Setting Level provides access to more specialized parameters such as MV limits and event input assignments. Communications Setting Level is dedicated to configuring RS-485 communication conditions.

The E5ZN also features a Copy Mode, which simplifies the process of duplicating settings across multiple controllers. This mode allows users to upload parameters from a master controller to a setting display unit and then download them to other E5ZN units, significantly reducing setup time for systems with numerous identical controllers. This feature is particularly useful in large-scale installations where consistency in settings is crucial.

Usage Features

The E5ZN is designed for intuitive operation through its front panel, which includes a display and setting switches. The display shows process values, set points, and various status indicators. Setting switches allow users to navigate through different levels and adjust parameters. The unit number switch, for example, is used to assign a unique identifier to each controller in a multi-unit system, crucial for RS-485 communication. The baud rate switch configures the communication speed to match the host system.

Operation indicators provide visual feedback on the controller's status:

• POWER: Lights when the device is powered on.
• ERROR: Indicates input errors, memory errors, or channel-specific input errors.
• SD/RD (Send Data/Receive Data): Flashes during communication with the host system.
• OUT1, OUT2 (Control Output 1, Control Output 2): Lights when the respective control outputs are active.
• SUB1, SUB2 (Auxiliary Output 1, Auxiliary Output 2): Lights when the respective auxiliary outputs are active.

The setup procedure is guided, starting from power-on and progressing through initial settings like unit number, channel number, input specifications, control method, and alarm type. The display provides clear prompts and values, which can be adjusted using the up and down keys. The auto-tuning function simplifies PID constant calculation, optimizing control performance without manual trial and error.

Error displays provide detailed information when issues arise, such as input errors (e.g., exceeding control range, wiring mistakes), display range errors, memory errors, or current value exceedance. These messages help users diagnose and troubleshoot problems efficiently, often suggesting corrective actions like checking wiring or power cycling the device.

Maintenance Features

A key maintenance feature of the E5ZN is its separable Terminal Unit from the Controller. This design allows for the replacement or servicing of the Controller without disturbing the existing wiring, minimizing downtime and simplifying maintenance tasks. This modularity is particularly beneficial in environments where quick component swaps are necessary.

Mounting options include DIN track installation, which provides a secure and standardized method for integrating the controller into control panels. End plates are used to secure the controller on the DIN track, preventing movement. For systems with multiple controllers, expansion terminal units (E5ZN-SCT18S) can be interlocked with a standard terminal unit (E5ZN-SCT24S), allowing for side-by-side mounting and reducing wiring complexity in multi-controller setups. Connector covers are used to protect the exposed connectors on the right end of the terminal unit.

The E5ZN's design emphasizes reliability and ease of service, ensuring that the temperature control system remains operational with minimal interruption. The structured setup process and clear error reporting further contribute to simplified maintenance and troubleshooting.

Omron E5ZN Series Specifications