Vertiv Liebert STS2/PDU - Configuring the Programmable Relay Board Settings

Vertiv™ | Liebert
®
STS2
™
100-1000A, 50/60Hz User Manual | Rev. 12 | 11/2017 92
2. Select INPUT CONTACT 1.
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 134.
This information is not saved if control power is removed.
11. Select OK in the Comm Options dialog box to activate the settings.
13.8.2 Configuring 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 PRB’s.
The Programmable Relay Board dialog box with two options: STANDARD SET and USER DEFINED SET. The
STANDARD SET are the factory-configured settings.
The STANDARD SET for the Programmable Relay Board settings are:
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.
Table 11 Standard settings for programmable relays
Relay Setting Definition
1 SOURCE 1 FAIL Source 1 failure.
2 SOURCE 2 FAIL Source 2 failure.
3 BYPASS CB4 CLOSED Switch (CB4) is closed, Source 1 is bypassed.
4 BYPASS CB5 CLOSED Switch (CB 5) is closed, Source 2 is bypassed.
5 TRANSFER INHIBIT A transfer between Source 1 and Source 2 is being restrained.
6 OUT OF SYNC
The phase difference between sources 1 and 2 exceeds the allowable
threshold for transfer,
7EQUIP OVER TEMP
The ambient temperature of the Liebert STS2
exceeds the recommended
threshold for operation.
8 Blank No setting.