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An optional UPS status communication cable is
available that allows transmission of information
between the UPS and the SiteNet Integrator.
This cable will plug into the 25 pin D Type
connector on the rear of the UPS marked DB-
25P. The opposite end of the cable in plugged
into the 9 pin D Type receptacle on the rear of
the SiteNet Integrator marked UPS RS-232 DB-
9P.
SENSOR OPTIONS
Door Ajar -- This option consists of two normally
open switches that are mounted to the cabinet
front and rear frame supports. The switches will
indicate by the position of the doors (opened or
closed) as determined by the status of the dry-
contact inputs to which they are connected on
the rear of the SiteNet Integrator.
Temperature and Humidity Sensors (Internal
and External) -- The sensors allow monitoring
of temperature and humidity status by the
SiteNet Integrator. The internal option is for
installation inside the LGH cabinet and is
supplied with a 12 foot (3.6 m) cord for
connection between the temperature/humidity
sensor and the SiteNet Integrator. Refer to the
connection diagram for wiring specifics. The
external option is supplied with a 30 foot (0.1 m)
cord for monitoring of temperature humidity
status outside the LGH cabinet. The sensor and
connections for both options are identical.
Water Detect -- The water detect option
includes a Liquitect (LT-400S) dry contact
sensor mounted in the bottom of the LGH
cabinet. The sensor is powered by a 24 VDC
power supply mounted in the frame channel of
the LGH cabinet. (Multiple options may share
this same general power supply. The supply is
rated for 1.6 Amps at 24 VDC). The water
detector is connected to the dry-contact input on
the rear of the SiteNet Integrator by a 30 foot
two-conductor cable. The detector may be
relocated outside the LGH cabinet by user
discretion for external water detection.
Remote ECM On-Off Control -- This option
allows on-off control of the ECM by the SiteNet
Integrator. It consists of a 24 VDC Power
Supply with Control Relay that is mounted in the
frame channel of the LGH cabinet. The 24 VDC
power supply may also be used to power other
options. A black SJ two-conductor (black & red)
cable is connected between the power supply
relay normally open contacts and the ECM
power terminal strip (terminals 37 & 38) in the
rear of the ECM. A two-conductor control cable
is connected between the power supply terminal
strips marked "Close to Energize Relay R1" and
the Relay Output K1 terminal strip on the rear of
the SiteNet Integrator. When the relay output
contacts on the SiteNet Integrator close, the
relay in the power supply is energized closing
the normally open contacts and shorting
between terminals 37 & 38 in the rear of the
ECM. This will allow power to be applied to the
ECM and cause the ECM to begin operation if
the ECM On/Off switch is in the On position.
Consequently, de-energizing the relay will allow
the ECM to be turned off remotely by the SiteNet
Integrator.
Smoke Detector Option -- A four-wire smoke
detector with normally open contacts, heat
sensor and sounder alarm is mounted in the top
of the LGH cabinet. The smoke detector is
power by a 24VDC power supply (*) mounted in
the frame channel of the LGH cabinet. The
power supply is normally powered from the UPS
(if available), but may be powered from
utility/mains by customer discretion. Power to
the smoke detector is supplied by a two-
conductor cable between the power supply and
the smoke detector. A second two-conductor
cable connects between the smoke detector and
the Integrator dry-contact inputs. If smoke,
flame, or high temperature change are detected,
the normally open contacts of the smoke
detector will close to provide alarm status to the
Integrator. The smoke detector sounder alarm
will also activate. This alarm can be silenced
only by removing power from the smoke
detector. This is accomplished by unplugging
the smoke detector power supply.
*The smoke detector power supply is a general purpose
supply that may be used to power any option requiring 24
VDC. Multiple options may share the same supply. The
supply is rated for 1.6 Amps at 24 VDC.
All the above options are available factory
installed with the order. The options are also
available for field installation. Field installed
options are shipped as kits containing the
sensors with appropriate mounting hardware,
cable, and cable restraint fixtures. Field
installation requires hand tools for termination of
control cables and routing of the cables.
All other standard alarm signals provided by the
LGH (High Temp, Clogged Filter, Cooling
Status) are also pre-wired for monitoring by the
SiteNet Integrator.