HVAC Monitoring & Control
The TELSEC® products will maintain proper temperature and humidity in the shelter by controlling the air
conditioning, ventilation, and heating systems.The control strategies used will reduce energy consumption,
extend the life of critical operating equipment, ensure equipment is operating properly, and prevent wide
swings in temperature and humidity. This is accomplished by using intelligent lead/lag strategies that alternate
the cycling of the HVAC equipment. Energy consumption is reduced by sensing inside and outside air
temperatures, and utilizing ventilation equipment in an economizer mode for "free cooling." Further energy
savings can be attained through tighter temperature control, automatic resetting of comfort modes, and
limiting set point ranges.
Tower Light Monitoring By monitoring tower lights such as beacon, strobe, and side lights, TELSEC® products ensure that all lights are operational. In the event of a light failure,TELSEC® products recognize the failure and generate a user-defined alarm message and send it to the appropriate location. Full-time operational tower lights ensure that wireless providers can avoid unnecessary fines.
Telephony Equipment Monitoring Telephony equipment monitoring is required to eliminate system downtime and maximize customer satisfaction.
Quest products provide real-time surveillance of every alarm type from sophisticated fiber optic performance
monitoring to the simplest discrete alarm. They monitor status and failures of MUXs, fiber optics, rectifiers,
fuse panels, repeaters, channel banks, receive/transmit communications, access node, card, and equipment
shelf, and provide on-site annunciators for audible and visual alarm indication. Built-in modems and serial
communication ports are used to send TL1 alarm messages which are communicated to a remote monitoring
center for immediate response. Sensing data and alarms are recorded in historical logs for on-site or
remote diagnosis.
Variable Speed Heat Exchanger TELSEC® products can provide variable speed control of heat exchanger fans on remote site cabinets. Using
variable speed control of fans extends fan life, battery life, and results in energy savings. fan and fuse facilities
are also monitored.
Environmental Alarm Monitoring & Control Remote site environments need to be monitored for the telephony equipment to operate properly and to ensure
a safe working environment for telecom personnel. Quest products intelligently sense changing environmental
conditions, such as, temperature, humidity, smoke/fire, toxic & explosive gas, flooding, security intrusion, and
commercial power failures. TELSEC® products control lighting, dehumidifiers, sump pumps, HVAC equipment,
and provide on-site annunciators for audible and visual alarm indication. Built-in modems and serial
communication ports are used to send TL1 alarm messages which are communicated to a remote monitoring
center for immediate response. Sensing data and alarms are recorded in historical logs for on-site or
remote diagnosis.
Cable Pressure & Air Flow Monitoring
To prevent cable faults and water intrusion in copper lines that could result in customer downtime and loss of
revenue, TELSEC® products monitor cable pressure and air flow in real-time. With this pressure and flow data,
telecom personnel can review trends, diagnose where and when a fault occurred, and take immediate corrective
action when alarms are received.
Door/Hatch Access Control To provide safe and protected access into remote sites and limit required site visits, TELSEC® products
provide three methods of control: card access, key codes, and remote operation of the entry door. Security
card access control using proximity card readers enables telecom personnel to remotely change passwords
and codes, thereby controlling access without having to re-key or make unnecessary site visits. Door
actuators are controlled directly by Quest products and door access is maintained even during commercial
power failures. An unauthorized intrusion creates a TL1 alarm message to the remote monitoring center.
Access logs track who visits remote sites with date and time stamping.
Generator Monitoring
By ensuring proper operation of generators, catastrophic failure and system downtime can be avoided.
TELSEC® products provide alarming and monitoring for generators including the following functions:
enable/disable, run time, transfer switch, fuel level, fuel spillage, and alarms for scheduled run time. In
addition, TELSEC®'s can control generator startup.
Power & Battery Capacity Monitoring The TELSEC® 1500/2000RM/WM monitors battery voltage and capacity by measuring the bulk power
plant through the incoming power feeding the system. It automatically estimates total hours of battery
capacity and how much time is remaining before the site loses backup battery power. With this data,
alarms can be generated to notify monitoring centers of high and low float voltage, under-voltage alarms,
low total battery capacity, and time remaining before loss of battery power. Power and battery problems
can be readily diagnosed remotely. Dispatching decisions can be prioritized based upon power failures and
imminent loss of battery backup power at remote sites.
The TELSEC® 500 is designed to provide real-time monitoring and control of your heat exchangers in your remote site cabinets. The TELSEC® 500 delivers energy savings and extended equipment life for your fans and batteries.
• Simple, compact, and designed for control and monitoring of up to six fans in a remote site cabinet.
• Built-in tachometer and speed control supports LOW COST 2 wire fans, thereby reducing capital expenditures.
• Connects to any model of the TELSEC® 1500/2000 family.
• Provides high temperature and intrusion alarming.
• Integrated pulse width modulation control offers variable speed or on/off control of the fan motors; intelligent variable
speed control enables the fan motors to run at the minimum necessary speed to maintain tight and stable temperature
control within the cabinet, thereby saving significant energy costs.
• By running the fans at lower speeds, the life of each fan motor can be extended, resulting in lower fan replacement costs
and reduced visits to the remote cabinet sites.
• Using variable speed control of the fan motors can also extend the battery plant life during a commercial power failure.
• Compatible with Marconi MESA® Cabinets.
• The TELSEC® 500 sends alarms to your selected alarm and/or maintenance center through dry contact closures.
Key Features
• Variable Speed or On/Off Control of up to 6 Fans.
• Built-in Tachometer for alarming which allows use of low cost 2 wire fans.
• Green/Red LEDs for each fan indicate status.
• Fan alarm reset: clears alarm conditions manually (on-site).
• User programmable high and low temp setpoints and high temp alarm for both normal and power fail operation.
• User adjustable fan maximum speed clips for both normal and power fail operation ensure meeting your tight acoustical and power failure reduction requirements.
• Override button: turns fans on to 100% or off or returns to automatic. Fans return to automatic when cabinet doors are closed.
• Fans will run at full speed and an alarm condition will occur if the system experiences a logic failure or if in override.
• Alarms for fuse failure, fan failure, or -48VDC power loss.
• Supports redundant (dual) power feed from power plant.
• Custom rack mounting option available.
Inputs • Alarms up to 4 intrusion inputs.
• Measures and alarms high temperature condition using 2 external temp sensors.
• User programmable TStat input sends fans to 100% or 0%. Fail-safe feature for hazardous conditions.
• Commercial power fail input can both clip maximum speed and offset the temperature setpoints during battery discharge (extends battery life).
Fan Outputs • Fan 1 – Fan 6: supplies each fan with -48VDC.
Alarm Outputs • 1 High Temp: the contacts are wired NO with contact closure alarm.
• 1 Intrusion: the contacts are wired NO with contact closure alarm.
• 1 Fan/Fuse: the contacts are wired NO with contact closure alarm.
Fan Speed Selection • Fan speed is determined by the TELSEC® 500 based on internal cabinet temperature.
SPECIFICATIONS
Part #
150663 | PID/SSI# 700252125 | Material ID# 916567
Power
Voltage
Current Draw
Nominal 48VDC (44 to 56VDC)
1 amp for Module, fans fused at 7.5 amps
Alarm Outputs (Contact Rating)
60VDC, 0.3 amps
Option
For 2nd temp sensor order part# 340258, PID/SSI# 700253806, Material ID# 928813.
Measures temperatures from -67 to 257ºF (-55 to 125ºC) in 0.9ºF (0.5ºC) increments.
22AWG 5 conductor shielded stranded PVC jacket
Ambient Operating Range
-40 to 180ºF (-40 to 82ºC)
RS232 Port (db9)
For diagnostics, uploading new operating system firmware, reading of temperatures, and programming of setpoints and other user configurable parameters.
Terminals & Connections
All connections are 2 piece type – plug in terminal
Fan Type
Compatible with popular industry-standard ebm/PABST high-velocity fans. Configurable for ON/OFF & Variable Speed control of both 2 wire and 2+ wire fans
Dimensions
L 19.1"(486mm), H 1.95"(50mm), D 4.4"(112mm)
Weight
3.5 lbs (1.6 kg)
Warranty
3 years
Specifications are subject to change without notice (V4)
