4. Section Functions
HC403VRC-KD-20170329-A1
Hytronik Industrial Ltd. | www.hytronik.com
3rd Floor, block C, complex building, 155#, Bai'gang road south,
Bo'gang village, Xiao Jin Kou town, Huicheng district, Huizhou 516023
Tel: 86-752-2772020 Fax: 86-752-2777877
Note: “Os” means on/off control;“+
∞
”means bi-level dimming control, fixture never switches off when
daylight sensor is disabled.
This is the dimmed low light output level setting after the hold-time has expired.
Stand-by dimming level
I – 10%
II – 20%
III – 30%
IV – 50%
30%
20%
10%
50%
2
1
I
II
III
IV
The light will not come on
The lamp is always on
The lamp is on without any
identifiable movement
The lamp will not work
despite movement
Incorrect light-control setting
selected
Faulty lamp
No power supply
Continuous movement in the
detection zone
The sensor is not mounted for
reliably detecting movement
Movement occurred, but not
identified by the sensor (Movem
ent behind wall, movement of
small object in immediate lamp
vicinity etc.)
Rapid movements are being supp
ressed to minimize malfunctioning
or the detection radius is too small.
5. Section Trouble Shooting
Cause Remedy
Malfunction Cause
Remedy
Adjust daylight threshold
setting
Replace lamp
Check power to sensor
Check detection area
setting
Securely mount enclosure
1. Reduce sensitivity.
2. Check the movement
behind walls to avoid
facilities such as water
pipe, fan, which may
mis-trigger the sensor.
Check detection area
settingng
I – 0s
II – 10s
III – 1min
IV – 5min
V – 10min
VI – 30min
VII – 1h
VIII – +∞
10s
1min
5min
10min
30min
1h
3
2
1
+
0s
I
II
III
IV
V
VI
VII
VIII
This is the time period setting to keep at the low light output level before it is completely switched off in
the long absence of people.
Stand-by period (corridor function)
Double L N terminal makes it easy for wire loop-in and loop-out, and saves the cost of terminal block
and assembly time.
4.3 Loop-in and Loop-out Terminal
4.1 Zero-cross Relay Operation
Designed in the software, the sensor switches on/off the load right at the zero-cross point, to ensure
the in-rush current is minimised, enabling the maximum life-time of the relay.
4.2 Daylight Monitoring Function
Hytronik specially designed this function in software for deep energy-saving purpose. A built-in
daylight sensor is designed to provide “smart photocell” function. This function can only be activated
when stand-by period is set to “+∞”. In this mode the lamp will automatically illuminate at the dim
level setting when the natural light goes below the threshold setting. The fixture will also switch off
as the natural light returns.
