Liebert STS2 Touch Screen Display
A keyboard is displayed to allow you to enter the name of the alarm.
3.Enter the name of the alarm set for that input. For example, a fan problem could be indicated by naming the button FAN.
4.Select OK on the keyboard to keep your label.
5.Select DELAY.
A keypad is displayed prompting you for a delay time, in seconds, for a condition to exist before the alarm is triggered.
6.Enter the delay value. The range for the values are from 0 (zero) to 99.9 seconds.
7.Select OK on the keypad to keep your setting.
The value you entered is displayed in the field adjacent to the corresponding input contact.
8.Repeat steps 2 to 7 for each input contact.
9.Select SAVE after you have configured all input contacts.
Be sure to select Save even if you have accessed this dialog only to change a setting.
10.Enter the settings in Input Contact Isolator Settings Record on page 142. This information is not saved if control power is removed.
11.Select OK in the Comm Options dialog box to activate the settings.
13.8.4Configuring the Programmable Relay Board Settings
The Liebert STS2 can contain up to two Programmable Relay Boards (PRB) that can trigger an external device when an event occurs in the Liebert STS2. For example, if Source 1 fails, an external light flashes.
See 6.1 - Programmable Relay Board for more information on the PRBs.
The Programmable Relay Board dialog box with two options: STANDARD SET and USER DEFINED SET. The STANDARD SET are the
The STANDARD SET for the Programmable Relay Board settings are:
Table 14 Standard settings for programmable relays
Relay | Setting | Definition |
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1 | SOURCE 1 FAIL | Source 1 failure. |
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2 | SOURCE 2 FAIL | Source 2 failure. |
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3 | BYPASS CB4 CLOSED | Switch (CB4) is closed, Source 1 is bypassed. |
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4 | BYPASS CB5 CLOSED | Switch (CB 5) is closed, Source 2 is bypassed. |
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5 | TRANSFER INHIBIT | A transfer between Source 1 and Source 2 is being restrained. |
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6 | OUT OF SYNC | The phase difference between sources 1 and 2 exceeds the |
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| allowable threshold for transfer, |
7 | EQUIP OVER TEMP | The ambient temperature of the Liebert STS2 exceeds the |
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| recommended threshold for operation. |
8 | blank | No setting. |
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The USER DEFINED SET allows you to assign faults and alarms to each contact on the relay boards.
Utilizing the USER DEFINED SET, you can also select Input Contact Isolators to associate with a programmable relay.
In addition individual events, three other assignment choices are available:
•SELECT ALL sends a summary event to the selected relay whenever any event occurs. If this setting is selected for a relay, no other event needs to be assigned for that relay.
•ON SOURCE 1 or ON SOURCE 2 can be assigned to a relay to send a notification when that source is being used by the load.
Once configured, the Liebert STS2 continuously checks the status of the items defined for each contact and updates the state of the relay.
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