Emerson Vilter Vission 20/20, Operation And Service Manual

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Section 22 • User Access
Vission 20/20 • Operation and Service Manual • Emerson • 35391SC 2.7
Overview
The user access screen is where all operators go to log in.
In the Vission 20/20, each screen has a security level, giv-
ing operators, technicians and/or supervisors the ability
to modify different sets of setpoints. The Vission 20/20
has four levels of security, see Figure 22-1.
• Level 0 – This is the default level with no operator
logged in. The functions available to the operator
are very limited and basically only allows someone to
start and stop the compressor.
• Level 1 – This is a technician level of access. All the
setpoints needed to operate and adjust the perfor-
mance of the compressor will be available to an op-
erator with this level of access.
• Level 2 – This is a supervisor level of access. Setpoints
that require a higher level of knowledge such as cali-
brating instrument will be available to an operator
with this level of access.
• Level 3 – This is considered a contractor level of ac-
cess. The setpoints available at this level have the
most potential of causing damage to the compressor.
Therefore, this access is restricted to those only with
the highest level of competence.
The user access screen is also where new operators are
added, changed or removed. Any operator can add an
additional operator but can only add an operator of less-
er or equal security level.
The 20/20 will be shipped with a Level 3 operator and
password pre-assigned to the installing contractor. He
can then assign all users with security levels as needed.
The procedure to assign user access levels is to first press
the User Access button. The User Access screen will ap-
pear with the preassigned level 3 operator name visible
within the Operators section. Highlight the name, then
enter the password associated with that name of the
user, then press Enter key to close the keyboard. Then
press the “Apply” button. Press the “Manage Accounts”
tab to begin the process of entering another Operator
Figure 22-1. User Access Screen - Login