Section 22 • User Access
either select the username from the operators win- dow or enter the username manually by touching the entry box and entering the name via the
Operator Password:
•This entry box is for the operator’s password. The password can be entered by touching the password entry box and entering the password via the
Verify Password:
•This entry box is to verify the operator’s password. Verifying the password can be entered by touching the “Verify Password” entry box and entering the password via the
Security Level:
•Select a security level for the account being added or modified. Only levels that are equal to or less than the
operator’s own security level will be shown. Add / Update:
•Pressing this button will initiate the creation or modi- fication of the specified account.
Delete:
• Pressing this button will delete the specified account.
Screen Security Levels
The following table lists all screen and their base secu- rity levels. The majority of the screens have more than one security level. The base security level gives the user access to the setpoints that can change to performance of the compressor. The secondary security level is typi- cally level 3 and is reserved for those setpoints that re- quire great care and knowledge of the system in order to change safely.
Table 22-1. Security Access Levels
Security Access Levels
Page | User Level | *Note |
|
|
|
Event List | Level 0 | - |
|
|
|
Input/Output States | Level 0 | - |
|
|
|
Trend Chart | Level 0 | - |
|
|
|
Help | Level 0 | - |
|
|
|
Alarms & Trips | Level 1* | Level 3 required for constraints |
|
|
|
Compressor Scheduling | Level 1 | - |
|
|
|
Compressor Sequencing | Level 1 | - |
|
|
|
Condenser Control | Level 1* | Level 3 required for constraints |
|
|
|
Compressor Control | Level 1* | Level 3 required for constraints |
|
|
|
Maintenance | Level 1 | - |
|
|
|
Data Backup | Level 1* | Level 3 required to upload data |
|
|
|
Instrument Calibration | Level 2 | - |
|
|
|
Service Option | Level 2 | - |
|
|
|
Configuration | Level 2* | Level 3 required for pages 3 - 6 |
|
|
|
Slide Calibration | Level 2 | - |
|
|
|
Timers | Level 2* | Level 3 required for constraints |
|
|
|
Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 1.8.5153 | 22 – 3 |
