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.
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
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
1 year
Specifications are subject to change without notice (V4)
