SiteNet 1 Shutdown Interface Kits

Remote Emergency Power Off (REPO) Cable

This optional 50-foot cable includes the attached matting connector for connection to the UPS. The REPO connector is at the rear of the unit. The factory supplied switch provides a normally open (N.O.) contact rated for 1 Amp at 24 Volts. Pressing the REPO button opens the UPS Output Circuit Breaker and disables battery charging. See the figure below.

PIN 1

REPO with Lighted	PIN 3
Pushbutton	PIN 4
Pushbutton

NOTES:

∙Run all customer-supplied control wiring in separate rigid steel conduit from power wiring.

∙Wire in accordance with national and local electrical codes.

∙See drawings in Connections for UPS REPO connector location.

∙

Communications Options

The UPS supports the following methods of communication:

∙SiteNet 1 (automatic, unattended shutdown)

∙SiteNet 2 (Power Surveillance software)

∙SiteNet SNMP (Simple Network Management Protocol)

∙Terminal / Modem Connection

SiteNet 1, SiteNet 2, terminal mode and modem operation require the RS-232 Kit. This kit provides a plug-in communications board that includes relays, serial communications and a DB25 connector for interfacing to the SiteNet software kits.

Each option kit includes a 10-foot communication cable with connectors, necessary software for computer interface to the UPS, and separate instructions for installation and operation. A power failure will initiate a pre-programmed timer. Then the software performs an automatic, unattended, orderly shutdown. If the UPS reaches a low battery condition, the software overrides the timer and performs an orderly shut- down. The software runs as a background task on the computer while monitoring the UPS.

SiteNet 2 Power Surveillance

This option includes software to enable UPS monitoring and control from a remote computer or workstation. Contact a Liebert UPS supplier for more details including availability for your computer or workstation

SiteNet SNMP (Simple Network Management Protocol) The SiteNet SNMP internal agent allows for direct network UPS management in an Ethernet environment. The internally mounted SNMP agent provides true product integration. It draws uninterruptible power from the UPS and eliminates the need for a second UPS for the agent. Remotely configure the agent via BOOTP and TFTP. Configuration and bootstrap are stored in non-volatile memory. The MIB is MIB II compliant. The SNMP option ships with the MIB in DOS and TAR formats complete with a configuration cable.

Terminal/Modem Connection

All information and functions accessed through the control panel are also accessible by a terminal, host computer, or modem through the RS-232 port. You may connect a terminal or computer to the RS-232 port directly or through a modem. The UPS dials out to a selected phone number to report alarm conditions and connects when called from a terminal.

The terminal shows a picture of the LCD display screen. The UPS responds to the left arrow, right arrow, enter, and escape keys on the keyboard just as it would from the UPS control panel. View UPS meters and alarm history, change configuration set- tings, and activate remote start, stop, and transfer (if bypass is available) all from a remote terminal.

Terminal Operation: Connect an ANSI terminal (or a computer with an appropriate terminal emulator program, e.g. ProComm) to the UPS directly or through a modem connection. See Cables for connection details.

Set up the computer terminal as follows:

Baud rate: 2400	Data bits: 8
Stop bits: 1	Parity: none
Full duplex

The RS-232 interface can operate in terminal mode which shows the LCD display on the screen, or ESP mode which only qualified service personnel use. To use terminal mode, press the space bar. The LCD display appears on the screen and the left arrow, right arrow, enter, and escape keys become operable. If the LCD display does not appear, the RS-232 may be in ESP mode. Type EXIT to return the RS-232 to terminal mode.

The UPS responds to requests such as viewing UPS meters or alarm history. Some configuration selections (other than voltage or frequency) can be changed during UPS operation. Use the configuration screens UPS ON(1)/OFF(0) and Transfer UPS to remotely turn the UPS ON or OFF, or make transfers (if bypass is available).

Modem Operation: Connect the UPS to a remote computer terminal through a modem link (one modem at each end). See Cables for connection details. The UPS automatically tests for a modem every three minutes, when the communication channel is idle.

VM18000, VM12000 specifications

The Liebert VM12000 and VM18000 are advanced precision cooling systems designed to provide reliable temperature and humidity control in critical environments such as data centers, telecommunications facilities, and industrial applications. These systems are engineered to meet the diverse needs of modern infrastructures that demand optimal performance, energy efficiency, and robust reliability.

One of the key features of the Liebert VM series is its high cooling capacity. The VM12000 offers a cooling capacity of 12,000 BTU/h, while the VM18000 provides an impressive 18,000 BTU/h. This makes both models ideal for environments where heat load is significant, ensuring that critical equipment remains within operational limits. The systems employ variable speed technology, allowing them to dynamically adjust cooling output based on real-time conditions, which enhances energy efficiency and performance.

The Liebert VM series is equipped with advanced control systems, including microprocessor controls that enable precise monitoring and adjustments. Users can easily access real-time data through intuitive interfaces, allowing for seamless management of cooling settings. Additionally, the systems can be integrated into building management systems (BMS), offering centralized control that enhances operational efficiency.

Another notable characteristic of the VM series is its modular design. This allows for easy scalability, making it suitable for both small setups and large, complex installations. The flexibility offered by the modular design permits the addition of cooling units as cooling demands grow, ensuring that users can keep pace with their evolving requirements.

In terms of energy efficiency, the Liebert VM12000 and VM18000 meet and exceed the efficiency standards set by the industry. The systems utilize R-410A refrigerant, which is environmentally friendly and contributes to higher energy performance. This focus on sustainability not only reduces the carbon footprint but also lowers operating costs, providing significant savings over time.

Furthermore, the Liebert VM series is built with robust components designed for durability and longevity. The systems are engineered for high performance in demanding conditions, ensuring reliability even in the most challenging environments.

Overall, the Liebert VM12000 and VM18000 precision cooling units stand out for their high capacity, energy efficiency, advanced controls, and modularity. These features make them a top choice for businesses needing reliable cooling solutions to protect their critical infrastructure while also promoting energy sustainability.