User Manual

38UPS Network Management Card 3 User Guide
PowerChute Network Shutdown clients
Path: UPS > Configuration > PowerChute
PowerChute Network Shutdown can shut down your UPS devices remotely.
When you install a PowerChute Network Shutdown client on your network, it is added to this list automatically.
When you uninstall a PowerChute Network Shutdown client, it is removed automatically.
Click Add Client to enter the IP address of a new PowerChute Network Shutdown client. To delete a client,
click the IP address of that client in the list, and then click Delete Client. The list can contain the IP addresses
of up to 50 clients.
With outlet groups, you also have to specify which outlet group is supplying power to the PowerChute client.
NOTE: PowerChute cannot connect to the NMC if HTTP is disabled on the NMC. See “Web access
screen” to enable HTTP or HTTPS
.
Universal I/O screens
The Universal I/O menu is relevant when you have installed the temperature and humidity sensors
(AP9335T/ TH) or the Dry Contact I/O Accessory (AP9810). Using these is often referred to as
environmental monitoring.
Temperature and Humidity screen
Path: Universal I/O > Temp & Humidity
This displays the name, alarm status, temperature, and humidity (if supported) for each sensor. Click the name
of a sensor to edit the name and location and to configure its thresholds and its hysteresis.
Thresholds. For each sensor, you set the thresholds for temperature and (if supported) humidity measured at
the sensor. When a threshold is breached, the alarm signals.
High and Low are warning messages. Maximum and Minimum are critical, they must be dealt with.
Hysteresis. Use the Hysteresis value to avoid getting alarms repeatedly for the same violation of the
temperature or humidity threshold.
When the temperature or humidity that causes a violation tends to waver slightly up and down, it can
repeatedly trigger the alarm. A greater hysteresis value can prevent this.
If the hysteresis value is not great enough, the wavering can first cause a threshold violation and then clear it,
meaning the alarm can be triggered several times. See the examples below, after noting the following.
• For maximum and high threshold violations, the clearing point for the alarm is the threshold minus the
hysteresis value you input.
• For minimum and low threshold violations, the clearing point is the threshold plus the hysteresis value.
Example of rising but wavering humidity: Say the maximum humidity threshold is 65%, and the humidity
hysteresis is 10%. Then, the humidity rises above 65%, causing an alarm. It then wavers down to 60% and up
to 70% repeatedly, but
— because of the 10% hysteresis value — the alarm is not cleared and therefore no
new alarm occurs. For the existing alarm to clear, the humidity would have to drop below 55% (which is 65%
minus 10%).