Rosemount Manual: UNI-TROL Field Mounted IR Fire Detection Systems using IRC90H Head | Rosemount Manuals & Guides

UNI-TROL™ FIELD MOUNTED

INFRARED FIRE DETECTION SYSTEMS

U4F -IR

U2F -IR

IRC90-H

FEATURES

< Instantaneous response to infrared radiation
< Autom atic and m anual Visual Integrity (vi) testing
< Adjustable sensitivity and time delay
< Automatic system tests performed on-line
< Automatic fault identification
< Latching Area LEDs indicate response to fire
< Microprocessor-based controller is easily field-program m able
< Two digital displays, one bar graph display, and high intensity LEDs indicate important

system status

< Field-configurable relay outputs for latching or non-latching action
< Instant and Area alarm relays are programmable for normally energized or de-energized

operation

< Individual detector output (count rate) can be measured and observed on the digital

display.

< One or two 4-20mA current outputs to send important system information to other devices

DESCRIPTION

The IRC90H fire detectors and UxF-IR fire controllers provide fast, reliable flame detection in a wide
variety of applications. The microprocessor based controllers (U4F pictured above) are available in one,
two or four channel versions which are the U1F, U2F and U4F. The system uses the Automatic Visual
Integrity (vi) feature, which provides a continuous check of detector optical surfaces, detector sensitivity,
and electronic circuitry of the detector/controller system. Automatic fault identification monitors the system
for proper operation and provides a digital display of system status using a numerical code. Controller
response includes actuation of three or four relays for direct control of field response devices, one or two 4
to 20m A current outputs, a full array of faceplate indicators.

CONTROLLER SPECIFICATIONS

< Operating Voltage:

24 Volts DC. Device can operate between 18 and 32 Volts DC

< Power Consumption (controller only):

2.4 watts nominal, 4.4 watts maximum
100 mA nominal, 180 mA maximum at 24 Volts DC

Maxim um start-up current is 1.5 Amperes for 10 milliseconds. Power supplies with fold
back current limiting are not recommended

< Maxim um Ripple:

Ripple should not exceed 5 Volts peak-to-peak. The sum of DC plus ripple must be

$18 Volts DC and #32 Volts DC

< Temperature Range:

Operating: -40ºC to +85ºC (-40ºF to +185ºF)

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Storage: -55ºC to +150ºC (-65ºF to +302ºF)

< Relay Contacts:

Form C Normally open/normally closed contacts rated for 5 Amperes at 30 Volts DC/ 250
Volts AC

< Current Outputs:

One or two 4-20mA DC current, with a maximum external loop resistance of 600 Ohms at
18-32 Volts DC

< Dimensions:

Refer to Figures 1 and 2

Figure 1 - UxF-IR Dimensions in Inches (Side
View)

< Shipping Weight (approximate):

6 lbs (2.7 kg)

< Material:

Copper-free aluminum

< Certification:

CSA certified with the NRTL/C qualifier (certified to Canadian and US standards) for
hazardous locations, Class 1, Division 1, Groups B, C, and D.

< Warranty:

3 years on controllers

< System Sensitivity:

Sensitivity for the standard controller is field-adjustable over a range of 50 through 80
counts per second (cps) in increments of 2 cps. The maximum response distance is
achieved at a 50 cps sensitivity setting and the minimum at 80 cps. For applications
involving high background radiation potential, the system can be desensitized by
increasing the count rate required to actuate it.

< Response Time:

Response to a saturating (high intensity) IR source is typically 10 milliseconds for the
instant alarm outputs and 0.5 seconds for the area alarm outputs when sensitivity is set
for 50 cps and time delay is set for 0.5 seconds (minimum settings).

Figure 2 - UxF-IR Dimensions in Inches (Rear
View)

< Terminal Configuration:

See Figure 3 for U4F-IR terminal configuration

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