GE MM200, Инструкция по эксплуатации

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CHAPTER 4: SETPOINTS CONFIGURATION SETPOINTS
MM200 MOTOR MANAGEMENT SYSTEM – INSTRUCTION MANUAL 4–11
System
System security
Hardware and passcode security features are designed to restrict user access. This can
deter inappropriate employee action and curtail errors. Security against hackers or others
with malicious intent should be provided by other means. Security for the external hard-
wired and field controls should also be externally provided as required.
Three security levels above the default level are recognized. Each security level can also be
set for passcode access. The passcode is programmed as a five-digit number, using only
digits 1 through 5. The security access levels are:
•
Default - start/stop control, auto/manual selection, and reset trips
• Level 1 - default privileges plus setpoint access
• Level 2 - level 1 privileges plus lockout reset and reset counters
• Level 3 - level 2 privileges plus factory page.
Passcodes are automatically canceled after five minutes of inactivity. Communications
passcode access can be cancelled by writing zero to the passcode register.
The following system security setpoints are programmed in the security page.
Passcode Level 1, Passcode Level 2, Passcode Level 3
Range: any five-digit number using digits 1 through 5 only or Disabled
Default value: 11111 (level 1), 22222 (level 2)
Access is granted if a passcode has been correctly entered matching the value of this
setpoint.
Access Switch Level
Range: 1, 2, 3
Default value: 1
Sets the access level provided by the access switch being closed. The contact input for
the access switch is configured on the contact inputs page.
Comms security
Range: Enabled, Disabled
Default: Disabled
Sets whether the security feature applies to the communications ports.
System trouble
For relay self-test, the MM200 runs a series of self-tests, including data and program
memory integrity and program execution watchdogs. If any of these tests fail, a self-test
trip or alarm is generated depending on the value of the Self Test Action setpoint.
The following setpoints are available for the system trouble element.
Self-Test Action
Range: Trip, Alarm
Default: Trip
This setpoint defines whether a self-test failure will cause a trip or an alarm.