Service manual

Introduction
SM-1H1.0002, Rev. 1, July 2009 2-5
2.5.4. Power Input
The TIM is powered by 8–30VDC. Although the power input is fully isolated and protected
against reverse battery connection, observe the polarity when connecting power to avoid damage
to the unit.
2.6. Top Panel Keypad/Displays
Due to the persisted IP network connection that the unit maintains, all monitored status, alarm
information, and configuration settings can be managed over the network (Remote Operation).
When on-site with the unit (Local Operation), the best way to interact with the unit is to plug a
browser-equipped computer into the unit and interact with its embedded server.
2.6.1. Top Panel Keypad
The keypad located on the top panel is not used in this application.
2.6.2. Top Panel Indicators
Four red-green LED indicators are on the TIM top panel. At a glance, these indicators display
the status of four major functional areas of the unit. Typically, if any of these indicators is red
rather than green, there is some condition or situation that needs to be explored, typically using
the Keyboard/Display navigation or a browser-equipped computer and interacting with the
embedded server inside the unit.
2.6.2.1. Operational State
The Operational State LED indicator is not used in this TIM application.
2.6.2.2. Alarm Conditions
The Alarm Conditions LED indicator is not used in this TIM application.
2.6.2.3. Communication Status
The Communication Status LED shows the status of the TIM-to-MLK (not WAN) connection.
Communication status verifies (green) that the TIM has established a valid serial link to the
MLK. Periodically the TIM may be momentarily disconnected when processing large event logs
from the MKL. During these brief periods and during TIM startup (which can last for 90-120
seconds), the TIM continues attempting reconnection with the MLK, and the Communication
Status LED will be red. The status of the serial connection between the TIM and the MLK is
also communicated to the host system using specific SNMP traps.