Version:1024151027E
- 1 -
Instruction Manual of JTY-GD-930KE Point-type Photoelectric
Smoke Detector
------ Please read this Manual carefully before installing and using the product.
-----
I. Product overview
JTY-GD-930KE point-type photoelectric smoke detector (Detector hereunder) is a two-wire
switch-type smoke-sensing detector. As a non-polar two-wire connection is adopted in the detector, it is
compatible in conventional switch-type alarm control systems and monitoring
alarm systems. The detector can also be connected with intelligent bus fire
alarm control systems via the interface module. The detector monitors smoke
concentration in the workplace in real time. While monitoring, the red indicator
blinks and the working current is low. When the work site smoke
concentration has exceeded the preset alarm threshold, the alarm detectors
and the red indicator remain on, while the loop current is increased. The
detector’s alarm signal can be locked and is displayed by changes in the loop
current. The alarm can only be reset by the instant power disconnection.
The detector is applicable in places where fire might generate volume smoke, i.e. in industrial and
civil buildings such as in the restaurant, hotel, teaching building, office building, computer room, archives
and stack room.
II. Product features
Designed with an upper cover and a lower cover, it can be installed, debugged and maintained
conveniently.
Within a single-chip microcomputer, it can process the sampling data in real-time, save the latest
144 historical data and realize a curve tracing for the field situation.
It has a temperature, humidity and dust accumulation drift compensation function.
III. Technical parameters
1.
Executive standard: GB4715-2005
2.
Operating voltage: DC24V ±20%
3.
Operating current: During monitoring <50uA.
In alarm mode 1mA~10mA (depends on the loop current limiting resistance).
4.
Working indicator: During monitoring, the red indicator blinks once per 6 seconds.
In sensor failure alarm, the red indicator blinks twice per 6 seconds
In fire alarm mode, the red indicator remains on.
5.
Weight: about 100g
6.
External dimensions: diameter: 100mm, height: 55mm (with the base)
7.
Wiring method: non-polarity two-bus system
8.
Operating environment: Indoor, temperature:
－
10
℃～
+55
℃
; relative humidity:
≤
95% (40
℃
±
2
℃
, without condensation)
9.
Installation height:
≤
12m
10.
Protection area: about 60m
2
. For details, see related provisions in GB50116-98
Code for
Design of Automatic Fire Alarm System
11.
Matched host machine: conventional switch-type fire alarm control system, or intelligent bus
fire alarm control system via the interface module.
IV. Appearance and dimensions (see Fig.1)
(Unit: mm)
Fig.1
Screw cover
A
Indicator
- 2 -
V. Use and engineering application
1.
Fig.2 is the schematic diagram of the matched mounting base.
DZ
-9
10
K
Fig.2
Definitions of terminals(non-polarity
two-wire system):
1 – L2 Signal terminal
2 – L1 Signal terminal
3 – L1 Signal terminal
4 – No Pin
Notes
：
Terminal 2 and 3 are connected
directly inside the detector. Connecting
the detector with the controller as Fig.3,
we can find the failures caused by
dismounting the detector.
2.
Wiring method:
a.
Fig.3 is a schematic diagram of the connection between multiple detectors with a
conventional switch-type (current type)alarm control systems.
DZ
-9
10
K
DZ
-9
10
K
DZ
-9
10
K
Fig.3
b.
Fig.4 is a schematic diagram of the connection between multiple detectors with
intelligent two-bus fire alarm control system via the interface module.
Intelligent
two-bus fire alarm
control panel
L2
L1
GND
+24V
Input module
TO+
TO-
Terminal load(4.7K)
DZ
-9
10
K
DZ
-9
10
K
DZ
-9
10
K
Fig.4
VI. Installation and debugging
Determine the location, mounting distance and numbers for mounting the detectors in the protection
area according to relevant provisions and regulations of GB50116-98
Code for Design of Automatic Fire
Alarm System
and GB50166-2007
Code for Installation and Acceptance of Fire Alarm System
.
A self-contained complete base is necessary during the installation of a detector. As shown in Fig.5,
the model, the external dimensions, the mounting hole diameter and the mounting hole spacing of the
base are DZ-910K,
Φ
100mm
×
22mm (diameter
×
thickness),
Φ4.
5mm and 44mm
～
65mm respectively.
