User Manual

UPS Network Management Card 3 User Guide39
Example of falling but wavering temperature: Say the minimum temperature threshold is 12°C, and the
temperature hysteresis is 2°C. Then the temperature drops below 12°C, causing an alarm. It then wavers back
up to 13°C and then down to 11°C repeatedly, but
— because of the 2°C hysteresis value — the alarm is not
cleared and therefore no new alarm occurs. For the existing alarm to clear, the temperature would have to rise
above 14°C (which is 12°C plus 2°C).
Input Contacts screen
Path: Universal I/O > Input Contacts
Input Contacts displays the name, alarm status, and state (open or closed) of each contact. These are
automatically found and displayed here when you install the environmental accessory.
Click the name of an input contact for detailed status or to configure its values. When disabled, the contact
generates no alarm even when it is in the abnormal position. Other fields are discussed below:
Output Relay screen
Path: Universal I/O > Output Relay
Output Relay displays the name and state (open or closed) of each relay. These are automatically found and
displayed here when you install the environmental accessory.
Click the name of an input contact for detailed status or to configure its values. The fields are discussed below:
Field Description
Alarm
Status
Normal if this input contact is not reporting an alarm, or the severity of the alarm if this
input contact is reporting an alarm. If not enabled for a contact, it displays Disabled.
State The present state of this input contact: Closed or Open.
Normal
State
The normal (non-alarm) state of this input contact: Closed or Open.
Severity
The severity of the alarm that the abnormal state of this input contact generates:
Warning or Critical.
Field Description
State The current state of this output relay: Closed or Open.
Normal
State
The normal (non-alarm) state of this output relay: Closed or Open.
Control To change the current state of this output relay, select this check box and click Apply.
Delay
The number of seconds a selected alarm condition must exist before the output relay
is activated. Use this setting to avoid activating an alarm for brief transient conditions.
If additional mapped alarms occur after the delay begins, the delay does not restart
but continues counting down until the output relay is activated.
Hold
The minimum number of seconds the output relay remains activated after the alarm
occurs.
Even if the activating alarm condition is corrected, the output relay remains activated
until this time period expires.