Hochiki RHD-E-AS Instruction Manual

RHD-E-AS
WIRELESS HEAT DETECTOR
GENERAL DESCRIPTION
The wireless heat detector samples the temperature in the protected area to provide the earliest warning of fire and yet offers a high
level of false alarm rejection. An alarm condition is determined when the level of temperature or the thermal variation versus time
exceeds the alarm threshold; consequently an alarm message is sent to the control panel through its wire to wireless translator
module and, eventually, one or more wireless expander modules.
Communication between the detector and the translator / expander modules is wireless, via the „Sagittarius‟ bidirectional protocol.
PARTS OF THE PRODUCT
DETECTOR VISUAL LED INDICATOR
The wireless heat detector is equipped with a bicolour LED (red / green)
that provides visual indication for functional conditions and battery levels
as indicated in table 1.
DEVICE'S POWER SUPPLY AND LINKING
The linking operation permits the configuration of the wireless heat
detector on the translator module.
The linking operation described below does not change if made directly
from the translator module or from the PC configuration program; please,
refer also to the "Guide to wireless system installation" and similar
documentation.
1) Verify that the secondary battery is present; if not, insert the battery
into its housing with the positive pole facing up (Picture 2).
2) Move the switch to position „ON‟ (Picture 3).
3) Insert the main battery (Picture 4).
Ensure that battery polarity is correct.
The visual LED indicator switches green once, then four times red
(programming mode) and will, successively, turn off. This
indicates that the detector is ready to be linked to the translator
module.
4) Move the switch in position „1‟ to trigger the
communication between the detector and the translator.
The green LED switches on once, then it blinks many times
(operating mode), successively the red LED blinks many times (self-
adjustment mode) and, finally, after alternating green-red for one
second, the indicator turns off: this indicates that the linking
procedure has been performed correctly and the detector has
programmed itself. The detector is linked and all the parameters (address, system code etc.) necessary to work correctly are
stored. If the LED remains switched on the red light it means that the linking operation failed. In this case remove the main battery,
switch alternatively the 'ON' / '1' switch a few times in order to discharge the internal capacitor and then start again from point 2).
HOCHIKI EUROPE (UK) LTD, Grosvenor Road - Gillingham Business Park - Gillingham -
Kent ME8 0SA - U.K.
1. Detector
2. Mounting base
3. Bicolour LED
4. Link - Program switch
5. Tamper switch
6. Batteries housing
7. Secondary battery
8. Main battery
9. Battery cover
Picture 1
Table 1
Status description LED indicator signal
Switching into "operating
mode"; occurs after main 4 short red LED blinks.
battery insertion.
Switching into "programming
mode"; occurs immediately
Green LED Short blinks.
after the linking phase is
started.
"Self-adjustment" mode;
occurs during the linking
Red LED blinking: 1 second
phase: device is programming
on and 0.1 second off.
itself with the wireless system
parameters.
Normal active mode or device
No signal from LED.
unpowered
Red LED blinking: 0.5 second
Alarm condition
on and 0.5 second off.
Orange blinking: 0.1 second
Main battery fault (low level)
on and 5 seconds off.
Secondary battery fault (low Green LED blinking: 0.1
level) second on and 5 seconds off.
Sequential orange-green LED
Both batteries fault blinking: 0.1 second on and 5
seconds off.
Tamper fault No signal from LED
Other fault type (fault on the
Sequential orange-green LED
optical analysis path, high
blinking: 0.5 second each
level of contamination inside
colour.
the optical chamber...)
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IMPORTANT NOTE! Programming is considered to be completed successfully only if there is an indication of programming
success on the detector and on the translator or on the window of the PC configuration program.
5) Put on the battery cover.
Secondary battery housing
Picture 2 - Secondary battery housing
Picture 3 - Link - Program switch
COMMUNICATION QUALITY ASSESSMENT
It is possible to assess the wireless communication quality of the sensor by using a testing feature built in the device.
After a successful linking operation, by moving the Link-Programming switch on the „ON‟ position, the sensor‟s indicator will start
blinking according to table 2.
Always remember to reposition the switch to '1' after the assessment operation: device will NOT work operatively while the
switch is on the 'ON' position.
Communication quality
No communication
Communication quality: 0 dB - 10 dB (Mark 2)
Communication quality: 10 dB - 20 dB (Mark 3)
Communication quality: 20 dB - 30 dB (Mark 4)
Communication quality: > 30 dB (Mark 5)
DETECTOR PLACEMENT
For specific information regarding detector spacing, placement and special applications refer to your specific national standards.
It is strongly advised to mount the device as far as possible from metal objects, metal doors, metal window openings, etc. as well as
cable conductors, cables (especially from computers), otherwise the operating distance may greatly drop. The device should not be
installed near electronic devices and computer equipment that can interfere with the reception quality.
1) Select the position of the detector before installing and fixing its supporting base. Verify, from that position, that the
communication between the detector and the translator or the expander is correctly established and working (see the
COMMUNICATION QUALITY ASSESSMENT paragraph).
2) Install and fix the base, in the selected position, with the screws provided (Picture 5 and Picture 6).
3) Insert the detector onto the base (Picture 5).
4) Carry out a test of the device to meet local regulations.
Secondary battery
Picture 4 - Main battery
Assessment Device's indication
Fail Two red blinks
Poor One red blink
Medium-low One green blink
Good Two green blinks
Excellent Two green blinks
Picture 5 - Detector placement
L20-SG350-6100 (v1.1)
Main battery
Table 2