TCP/IP dry contact device
86 Administrator Guide v 2.2 Thermo Scientific Smart-Vue
®
Wireless Monitoring Solution
It is important to identify the two logical states implemented by the IP dry
contact alert device:
• Normal state
• Alarm state
When plugging the dry contact device into another external device, it is
possible to choose the physical state for each of the logical states. This
means that you can choose the "normal" logical state that corresponds to
dry contact being open or closed.
Normal state
Under normal operation, after installing and activating the system, the alert
device is in a normal state when the following conditions are all met:
• No new, non-acknowledged alarms are present for any of the sensor
groups to which the device is assigned
• Power is supplied as required by the device
• The device is connected properly to the network
• The AMS (or "Gestion Alarme") service must be running
CAUTION: When plugging and configuring the device, until it is added to
the Smart-Vue Server system, or during system maintenance, the dry
contact may switch to the normal state even if all the conditions for the
normal state are not met.
Alarm state
The dry contact alert device is in an alarm state when at least one of the
following conditions arises:
• An alarm occurs in one of the sensor groups to which the device is
assigned
• Power to the device is cut
• The device loses its connection with the network for more than 5
minutes
• The AMS service is stopped
17.2 Package contents • Smart-Vue TCP/IP Dry Contact
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