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Bộ DIMMER Helvar - Transistor Dimmer (454)
Bộ DIMMER Helvar - Transistor Dimmer (454)
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Transistor Dimmer (454)
The DIN-rail mounted 454 is a four-channel transistor dimmer. It can operate in one of two modes: leading edge or trailing edge. All four channels operate in the same selected mode, with each channel capable of controlling 2.2 A.
It supports capacitive and resistive loads, and it can be connected directly to mains-voltage lamps and to low-voltage lamps with electronic transformers. The 454 is not for use with inductive loads.
Each channel of the dimmer has both current and thermal protection.
The dimmer features an LED segment display. There is a push button user interface for monitoring, manual configuration and control purposes.
Key Features
Trailing-edge or leading-edge dimming
LED segment and push buttons for manual configuration, including the following output types: linear, square, S-law, DALI logarithmic, LED curve, and DALI linear
Capable of handling resistive and capacitive loads
Manual wired override input
Voltage and frequency compensation
Overcurrent and temperature protection included
Power-on to last level or to user-defined level
Additional Features
The following features may be accessed using Helvar’s Toolbox or Designer software:
/Min. levels, fade times, scenes and groups
System failure level/ignore
Output
Output Type
Additional Information
t 0
Non-Dim
Switched on and off only
t 1
Linear
Optimised for incandescent
t 2
Square
Optimised for incandescent
t 3
S-law
Optimised for incandescent
t 4
DALI logarithmic
IEC 62386-205
t 5*
LED curve
Optimised for LED
t 6
DALI linear
IEC 62386-205
Technical Data
Mains:
Solid core: up to 4 mm²Stranded: 2.5 mm²
DALI:
0.5 mm² – 1.5 mm², max. 300 m @ 1.5 mm²
SDIM/DMX:
0.22 mm² – 1.5 mm² low-loss RS485 type (multistranded, twisted and shielded)