GE Industrial Solutions Entellisys 5.0 User Manual

DEH-500

Warnings, Cautions, and Notes as used in this publication

Warnings

WARNING! Warning notices are used in this publication to emphasize that hazardous voltages, currents, or other conditions that could cause personal injury exist in this equipment or may be associated with its use.

Warning notices are also used for situations in which inattention or lack of equipment knowledge could cause either personal injury or damage to equipment.

Cautions

CAUTION: Caution notices are used for situations in which equipment might be damaged if care is not taken.

Notes

NOTE: Notes call attention to information that is especially significant to understanding and operating the equipment.

This document is based on information available at the time of its publication. While efforts have been made to ensure accuracy, the information contained herein does not cover all details or variations in hardware and software, nor does it provide for every possible contingency in connection with installation, operation, and maintenance. Features may be described in here that are not present in all hardware and software systems. GE Consumer & Industrial assumes no obligation of notice to holders of this document with respect to changes subsequently made.

GE Consumer & Industrial makes no representation or warranty, expressed, implied, or statutory, with respect to, and assumes no responsibility for the accuracy, completeness, sufficiency, or usefulness of the information contained herein. No warranties of merchantability or fitness for purpose shall apply.

Entellisys™, EntelliGuard™, and FlexLogic™ are trademarks of the General Electric Company.

Modbus RTU is a registered trademark of AEG Schneider Automation.

Third revision. Corresponds to Entellisys HMI version 5.0

How to contact us

Please have your Entellisys System Summary # and Sub # ready when calling. This information can be found on the Entellisys HMI on the System Health screen by clicking the Job Info button.

Post Sales Service GE Switchgear 510 Agency Road West Burlington, IA 52655

Phone (toll free): 1-888-437-3765

Additional information:

www.entellisys.com

For Option Upgrades and CPU Replacement needs only, e-mail us at entellisys.lvs.pss@ge.com.

Contents

1.0.1 Other User Inputs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

1 System administrator roles and responsibilities

1.1 Security Champion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

1.1.1 System Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

2 Pre-programming settings prior to switchgear arrival

3 Commissioning the switchgear

4 User administration

4.1 HMI User configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

4.1.1 User Groups. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

4.1.2 Adding Users. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

4.1.3 User Permissions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

4.1.4 Resetting forgotten HMI passwords . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

4.2 Modbus

4.2.1 Control and settings passwords . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

4.2.2 HMI Roles . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

4.2.3 Restricted Breaker Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

security . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

4.2.3.1 Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

5 Reduced Energy Let-Thru Mode

5.1 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

5.1.1 HMI Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

5.2 RELT Groups . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

5.3 Administration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

5.3.1 Single-point Overcurrent Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

5.3.2 RELT Settings for Bus Differential . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

5.3.3 RELT Settings for Multi-Source Ground-Fault. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

5.3.4 Ground Fault Trip Priority . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

5.3.5 RELT Settings for Zone Selective Interlock. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

6 Time synchronization

6.1 Time synchronization configuration screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

6.2 Basic time sync configuration for stand-alone systems. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

6.3 Time Sync configuration for multiple lineups . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

6.4 Using an external time server . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

6.5 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

7 Establishing communication to Remote HMIs

7.1 Network re-configuration procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

7.1.1 Prepare the local network. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

7.1.2 Connect to the local network. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

7.2 Changing the CPU IP address . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

7.3 Changing the local HMI IP address . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

7.4 Verify local communication to CPU . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

7.5 Network security/VPN device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

Contents 5

8 Remote HMI Software

8.1 Installing and configuring remote HMI. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

8.1.1 System Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

8.1.2 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

8.2 Multiple lineups. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

8.3 Configuring Lineups . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

8.3.1 Switching between lineups. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

9 Settings files and offline system configuration

9.1 Offline mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55

9.2 Viewing and comparing settings files . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57

9.3 Writing settings to a live system. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57

9.4 Resetting the offline settings files to the current settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58

10 Sharing files across HMIs

10.1 Publishing shared files. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59

10.2 Updating an HMI with shared files . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60

11 System archives

11.1 Restoring an archive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62

11.2 Creating an archive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62

12 Feature options

12.1 Viewing installed options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65

12.2 Upgrading options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66

13 Preparing and configuring a replacement CPU

13.1 Part II – Replacing the CPU. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70

14 Other maintenance functions

14.1 Viewing and updating circuit breaker names . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79

14.2 Viewing and updating circuit breaker accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80

14.3 Installing CPU firmware. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82

14.4 Viewing zone configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83

15 Administrator access to the operating system

6Contents

1 System administrator roles and

responsibilities

The Entellisys™ Low Voltage Switchgear system requires a System Administrator for oversight of critical functions. Those critical functions are described in this guide.

Chapter 1 provides an overview of the roles and responsibilities.

The following chapters describe how to perform the functions, in detail.

1.1 Security Champion

The most important role of the System Administrator is to control the access to the system. There are several forms of access:

• HMI Login Access: Entellisys provides programmable permissions and passwords. The

System Administrator determines who needs what permissions and assigns login names and passwords.

• Modbus

Settings and Control Access.

• Remote Access to the Switchgear over a company network.

Security Reminders

• Limit the access level handed out to only the required permissions.

• Stress the importance of keeping passwords secret.

• If you believe passwords have been compromised, change them immediately.

• Always log out before leaving the local HMI, or leave the system logged in as Guest.

Alternatively, the switchgear can be configured to automatically log out after a time period. (For details, on the Main Menu, click User Settings, and then click HMI Preferences.)

1.1.1 System Maintenance

The System Administrator is also responsible for system maintenance as described in this document.

Security Champion 7

System administrator roles and responsibilities8

2 Pre-programming settings prior to

switchgear arrival

Entellisys provides a method for users to work on the system settings before the switchgear arrives. Once the gear is installed and control power is applied, the saved settings can be written to the system.

To pre-program Settings, the “Entellisys Remote HMI – User Interactive version” must be purchased. GE will ship the Remote HMI software, System Administrator Manual (this manual), and a System Archive when the switchgear ships from the factory.

The following steps should be performed to begin pre-programming:

• Step 1: Install the “Entellisys Remote HMI – User Interactive version” software.

See Remote HMI Software

• Step 2: Install the System Archive provided by GE.

See Restoring an archive

• Step 3: Change to Offline Mode.

See Offline mode

• Step 4: Set User Settings.

on page 55 for instructions and for offline mode capabilities.

on page 47 for instructions.

on page 62 for instructions.

See DEH-501 Entellisys Low Voltage Switchgear System User Manual.

• Step 5: Install and Commission the Switchgear.

See Commissioning the switchgear

• Step 6: Configure the System for Remote Communications.

See Establishing communication to Remote HMIs

• Step 7: Write saved Settings to System.

See Writing settings to a live system

on page 11 for instructions.

on page 41 for instructions.

on page 57 for instructions.

Pre-programming settings prior to switchgear arrival10

3 Commissioning the switchgear

Installing and starting up the switchgear is an important event for the System Administrator. The following steps must be followed when commissioning the switchgear.

• Step 1: Reset Passwords.

See User administration

• Step 2: Set User Settings.

See DEH-501 Entellisys Low Voltage Switchgear System User Manual.

• Step 3: Set Local HMI flags.

See HMI Roles

• Step 4: Set System Time Synchronization.

See Time synchronization

• Step 5: Configure System for Remote Communications.

See Establishing communication to Remote HMIs

on page 19.

on page 13.

on page 33.

on page 41.

Commissioning the switchgear12

4 User administration

4.1 HMI User configuration

The Entellisys HMI requires a login name and password. This login sets the permissible actions for the session. Each user's permissions are programmable to provide flexibility. Only the Administrator can set permissions, login names, and passwords.

Since the HMI stores the user profiles locally, for systems with multiple HMIs, an individual user profile must be configured at each HMI.

Guest Login is the lowest level of access to the HMI and will assume the guest permissions at anytime a user has logged out. Guest is allowed “view only” access to all system status and breaker settings screens.

CAUTION: Enabling Group Permissions for features that allow the changing of settings and/or access to control functions must be restricted to accounts for qualified personnel only. As a reminder, users with such privileges will be presented with the following screen upon initial login:

Figure 4-1 Initial login Caution screen

Auto Logout

If the HMI is configured to logout a user after 30 or 60 minutes, the HMI will return to the default screen and login as a “guest” (Allowing view only access to the system). To configure or disable the auto logout, navigate to User Settings, then HMI Preferences and click on the General tab.

HMI User configuration 13

4.1.1 User Groups

A Group defines the permission categories for a type or group of users. By default, there are 3 pre-configured groups - each with preset and fixed permissions. The Administrator and Guest user IDs are preset.

New user groups may be added to customize the permissions for a user.

Figure 4-2 Programmable permissions screen

New groups may be added and permissions may be assigned to the group or specific users in the group.

Add a group

1. On the Main Menu, click the User Administration button (Visible only by an Entellisys

Administrator)

2. Click the desired user group to edit or click the Add Group button to define a new type of user.

3. Change the permissions by selecting the appropriate check boxes in the permission list.

; User will be granted this permission.  User will not have this permission.

The changes are immediately saved in the HMI

User administration14

4.1.2 Adding Users

Add users under the appropriate group at each HMI. (Administrative user rights are required) Each individual that is expected to operate the system should be given their own account. There are three default users.

Guest: The guest login allows read-only access to all status and settings screens. The system defaults to guest level access as soon as someone logs out.

Operator with RELT: Individuals that require access to control breakers, acknowledge alarms, modify breaker settings and can operate RELT. (See RELT Groups

Operator: Individuals that require access to control breakers, acknowledge alarms, modify breaker settings but can not operate RELT.

Administrator: Operator permissions plus access can backup and restore settings, change CPUs, create users and other administrative tasks.

Changing user permissions

Permissions may be changed on a user basis for all users added to new user groups. Operator and Administrator user permissions are fixed and can not be changed.

Figure 4-3 User Administration screen in the HMI

on page 27)

Adding new users

1. On the Main Menu, click the User Administration button (Visible only by an Entellisys

Administrator)

2. Click the user group which the user will be added and click “Add User”

3. Update the contact information

4. In the Authentication box, Enter their login ID and password

5. Modify permissions if required (must create a new user group)

6. The changes are immediately saved in the HMI

HMI User configuration 15

To change a password

1. On the Main Menu, click the User Administration button (Visible only by an Entellisys

Administrator)

2. Select the desired user group on the left-side pane. Expand the group by clicking the + symbol and click a user name

3. Enter the new password in the New Password field

4. Confirm your password by re-entering the new password in the Confirm Password field.

Click OK to save your new password (or click Cancel to exit)

To verify the password change:

1. Log out of the HMI by clicking the Login/Logout icon in upper right-hand corner

Figure 4-4 Login/Logout icon

2. Click once more to log back in and enter the new user name and password

User administration16

4.1.3 User Permissions

• Edit Flexlogic – Edit Flexlogic control section.

• Meter Distribution – Modify Metering Distribution

• Breaker Control – Open/Close and Trip Breakers

• Waveform Settings and Control – Modify waveform settings

• Edit User Settings – Modify all Protection and Alarm relay settings

• Edit Discrete I/O – Modify rights to the Discrete I/O screen

• Alarm Settings – Modify rights to the Alarm settings configuration screen

• Alarm Acknowledge – Permissions to acknowledge alarms on the alarm screen

• Reduced Let-Thru Mode – Permissions to turn on and off RELT

• Virtual Input Control – Access to user push buttons on the control screen typically for

Auto Throw-over

• CPU & Messenger Maintenance – Permissions to modify settings in the Predictive

Maintenance screen.

•Close HMI

• HRGF Location – Permissions to run the Manual HRGF Location conductor

Permissions for Default Operators:

•Breaker Control

• Waveform Settings and Control

• Alarm Acknowledge

•Virtual Input Control

• HRGF Location Control

Administrator Permissions: Rights to all permissions.

4.1.4 Resetting forgotten HMI passwords

Administrators have access permission to change passwords for all users in all groups.

NOTE: It is very important for the System Administrator to keep the Administrator password in a safe location. If the Administrator password is lost, a GE Field Service visit is required to restore the password.

GE offers an optional service to store the Administrator password at the request of customers. In the event the password is lost, GE can provide the password to the customer over the phone, without requiring a site visit.

Contact GE Post Sales Service for help (see How to contact us

on page 2).

HMI User configuration 17

4.2 Modbus® security

4.2.1 Control and settings passwords

The CPUs require extra passwords to change settings (i.e., Short Time pickup delay setting) and

to send commands (i.e., Open Breaker command). These passwords apply to all clients that access the Entellisys system through Modbus communications including the Entellisys HMI, SCADA, or Building Automation, etc.

NOTE: The system ships with default CPU Modbus Settings and Command passwords. The System Administrator should change these passwords for added security.

The HMI can be configured to transparently send the passwords whenever needed or it can be configured to require all users to re-enter the password when the action is attempted.

Figure 4-5 Modbus Security screen in the HMI

User administration18

To change the Settings and/or Command passwords

1. On the Main Menu, click the Maintenance button. The button will only be displayed if access

is allowed with the current login permissions.

2. Click the Modbus Security tab. The Modbus Security screen has options to change both CPU A and CPU B Command and Settings passwords.

NOTE: It is recommended that the passwords in CPU A and CPU B be set to the same value.

3. Enter the new commands password in the New Password field - password must be a numeric number

4. Re-enter the password in the Confirm Password field

5. Click the Change button to download the password

6. Select the desired Auto Send option

; Indicates the Auto Send option will transparently send the password each time a

command is sent to the CPU

 Disables the Auto Send option.The user will be prompted to enter the password (for the

CPU that is currently the default) each time a command is sent

NOTE: For added security, it is recommended the Auto Send option be disabled. This will require an additional password to be entered each time a command is performed.

Clear Modbus passwords

1. Type “0” in both the Password and Confirm Password fields

2. Click Change

3. Enter the old password

4.2.2 HMI Roles

An Entellisys system may have multiple HMI stations running. There are three different roles that the HMI software will perform. There are some functions that should be performed by one HMI only.

The Kiosked touchscreen HMIs are considered Local HMIs and can be configured as a local or a master HMI.

The “Local HMI” check box designates the redundant HMI. When it is checked:

• The user can block breaker commands from other HMIs in the “Breaker Control” screen

(See Chapter 3 in DEH-501 Entellisys Low Voltage Switchgear System User Manual)

• HMI uses port 503 for Modbus TCP/IP communication with CPUs

• “Master HMI” check box is cleared

• HMI updates time zone bias information of CPUs that reside in the same lineup whenever

that information is adjusted

Modbus® security 19

The “Master HMI” check box designates the primary HMI. When it is checked:

• The HMI have the functions of the “Local HMI”

• Send alarm emails via SNTP

• Operate Reduced Energy Let - Thru Mode (RELT)

Remote HMI Role

The Remote HMI software which can be installed on a standard workstation or laptop. There are some minor differences between the Remote HMI and the Local HMI.

• The Local and Master HMI controls are disabled

• Does not send out email notifications for alarms

• Does not have ability to block breaker commands

• Uses port 502 for Modbus TCP/IP communication with CPUs

• Does not update time and time zone bias information of the CPUs

Communication restrictions

The CPUs can support up to 8 simultaneous communication ports for Modbus clients. Once the limit is exceeded, clients will be blocked until a port is free. The Local HMIs have special ports reserved for its use.

To set an Local HMI as a “Master”

1. On the Main Menu, click the Maintenance button. The button will only be displayed if access

is allowed with the current login permissions.

2. Click the Modbus Security tab.

3. Select the Master check box as shown in Figure 4-5.

4. Click the OK button to save changes (or click Cancel to cancel changes).

User administration20

4.2.3 Restricted Breaker Control

In systems with certain supervisory control schemes, such as a paralleling gear application, it may be necessary to deny breaker control from the user or from other Modbus TCP clients.

Using the Restricted Breaker Control feature, a code can be added for open, close and trip operations for selected breakers. Each function (open/close/trip) can be configured independently for a selected breaker.

Restricted Operation: (Restricted command enabled)

When Restricted Breaker Control is enabled for an operation on a particular breaker, all normal command avenues are disabled (except protective relays). The CPU will expect the preconfigured code to be written to a different register for the respective breaker for open, close or trip commands. The pre-configured code must match the code entered for the command and breaker in question in the “Restricted Breaker Control” setting screen. (See Setup

For more information about operating breakers from a 3rd party Modbus TCP client, see DEH 502 System Integrator’s guide.

NOTE: Restricted breaker control does NOT interfere with protective relays or FlexLogic and their ability to operate the breaker.

on page 22)

Enabling Restricted Breaker Control: Restricted Breaker Control is available but disabled by default. It must be enabled by the factory or a GE Field Service Engineer. Once enabled, the user controls shown in Figure 4-6 will be available.

Events:

Following events are issued when a restricted breaker receives either a open, close or trip command.

• Breaker Open/Close/Trip Command Restricted Control Received: CPU acknowledged

that the “SRC X Open/Close/Trip Breaker By Restricted Control” register received the correct command code.

• Breaker Open/Close/Trip Cmd Restricted Cntrl Incorrect Code: CPU reported that the

“SRC X Open/Close/Trip Breaker By Restricted Control” register received the incorrect command code.

• Breaker Open/Close/Trip Cmd Restricted Control Not Enabled: CPU reported that the

“SRC X Open/Close/Trip Breaker By Restricted Control” register received a command but the Restricted Breaker Control is disabled.

• Breaker Open/Close/Trip Command Restricted Control Enabled: CPU acknowledged

that the normal Open/Close/Trip command was rejected because the associated command was restricted for the breaker. See Setup

on page 22.

Modbus® security 21

4.2.3.1 Setup

Navigate to the “Restricted Breaker Control” tab from the Main Menu, Maintenance screen administrative login is required.

Figure 4-6 Restricted Breaker Control Setting Screen

Open / Close and Trip Code Text Boxes

Enter the code that is required to operate the associated breaker(s) in restricted mode. The default value for the Open/Close/Trip code is “2.” Allowable values are from 2 to 65535.

Breaker Operation Matrix

Check the operations per breaker which require restricted control.

NOTE: Restricting operations will prevent the HMI from sending said actions to the respective breaker(s).

User administration22

5 Reduced Energy Let-Thru Mode

Reduced energy let-thru (RELT) is an optional feature which provides the ability for a user to quickly adjust the system to temporary settings (usually more sensitive) while in close proximity to the Entellisys switchgear or downstream equipment.

Topology 0 stores RELT settings for each relay (see below). Topology 0 settings will take precedence over any topologies until the system is returned to normal.

NOTE: See chapter 8 in DEH-501 System User’s Manual for more information about operation, alarms, events and FlexLogic.

Highlights

• Reduces potential arc flash energy - Increases the sensitivity of the breaker, potentially

lowering the HRC category.

• Dynamic ZSI Automatic Adjustment - Breakers in RELT mode will use their RELT settings.

ZSI delays will dynamically adjust all upstream breakers.

• Security - Individual user software “keys” are used to track RELT commands per user.

• Easy to use - Quickly enable, disable and view RELT with clear graphics on an intuitive

HMI touchscreen interface.

• Programmable - RELT can be turned on and off via Modbus TCP, FlexLogic or from an

external device through Discrete I/O.

• Flexibility - RELT for a single breaker, group of breakers or the entire lineup can be

executed by a single user input.

• Alarming - A Reduced Energy Let-Thru Mode alarm is available for visual and email

notification.

Relays with RELT Settings

Single-point Relays

• Overcurrent relays - IOC, ST, LT and GF

Multi-point Relays

• Bus Differential (BD)

• Multi-Source Ground Fault (MSGF)

• Dynamic Zone Selective Interlock (ZSI)

• High Resistance Ground Fault (HRGF) Priority Tripping

Reduced Energy Let - Thru Modes

• Single Breaker RELT - Switches overcurrent relay settings to RELT (Topology 0) for a single

breaker as well as any associated breakers as a group. (See RELT Groups

• Multi-point RELT - This will add a “Multi-point” key and switch all multi-point relays to

RELT (Topology 0) settings as a group.

on page 27)

• System Wide RELT - This will add a “System Wide” key and switch settings for all current

relays on all breakers as well as all multi-point relays to RELT (Topology 0) settings.

5.1 Operation

The user will initiate RELT by adding a “key” to a RELT element. An element is an individual breaker, a group of breakers, Multi-point relays or the entire system. A RELT “key” can be initiated by a user, FlexLogic or an external Modbus device. (See section 8.4 in DEH-501 System User’s Manual for details)

These keys are cumulative. Up to 8 user keys can be added to each RELT element . There can be any combination of Single-point, Multi-point and System Wide keys. They can be added to each RELT instance simultaneously and in any configuration. (See figure 5-1).

If FlexLogic has initiated RELT, then the FlexLogic program must check that the state of the associated Virtual Output is low (off) before RELT can be turned off. (See DEH-501 System User’s Manual for details)

Figure 5-1 RELT Command Dialog Box

NOTE: If more than one user initiated RELT, then each user must individually Turn Off RELT before the element is returned to normal.

5.1.1 HMI Control

Point of Access

RELT is only controllable (on/off) from the Master HMI in a system. This HMI will be one of the in-gear/near-gear PanelC HMIs. (See 4.2.2

All other HMIs can view RELT status and can change RELT (Topology 0) settings but can not toggle the RELT state.

To determine the interactive level allowed on a particular HMI, click on the Reduced Let - Thru Mode button and the floating window which appears will indicate the level. See below:

Reduced Energy Let-Thru Mode24

HMI Roles)

The Master HMI text indicates that the HMI will accept RELT mode commands.

The Non-Master HMI text indicates that the HMI will not accept RELT mode commands and will be displayed on all other HMIs - both Local PanelC HMIs and PCs with Remote Interactive software.

CAUTION: RELT will not turn off if there is more than one HMI configured as a “Master” in the system.

HMI Indication

The Entellisys HMI will provide positive feedback through local indication that one or more of the RELT elements are operating with RELT (Topology 0) settings. The HMI will constantly monitor and update the Reduced Let - Thru Mode, One-Line and Elevation screens with the system state.

States of RELT

RELT state is indicated by the color of the Reduced Let - Thru Mode button for all modes and a colored box surrounding the breaker icon (See Figure 5-2). The color of the annunciation also provides information about the state of the system:

• Solid Yellow - Indicates that both CPUs are operating on RELT (Topology 0) settings.

• Flashing Yellow - Indicates that only one CPU is operating on the new RELT (Topology 0)

settings. Although there is no redundancy, the system is still operating on the adjusted settings.

• Flashing Red - Indicates either a loss of communication between the HMI and both CPUs

while RELT mode is turned on or that there was an error and neither CPU are operating with RELT (Topology 0) settings and RELT Mode it is not in effect.

Breaker Indication

The blue location LED will blink at 2hz on the breaker while it is operating in RELT (Topology 0) settings.

Operation 25

Figure 5-2 Reduced Energy Let-Thru Mode

User Permissions

Only users with “Reduced Let-Thru Mode” permission enabled shall be able to operate RELT. (See

HMI User configuration

on page 13)

Default user groups and their RELT permissions:

• Factory: Reserved for factory trained service engineers. Can set and remove keys as well

as remove keys set by others.

• Administrator: Can set and remove RELT keys as well as remove keys set by others.

• Operator with RELT: Can set and remove RELT keys.

• Operator: Denied the ability set or remove RELT keys.

•Guest: Denied the ability set or remove RELT keys.

Additional groups can be defined with unique permissions.

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