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Thiết bị đầu vào Helvar - 444 Mini Input Unit
Thiết bị đầu vào Helvar - 444 Mini Input Unit
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444 Mini Input Unit
DIGIDIM Mini Input Unit (444)
The Mini Input Unit is a DALI-compatible interface, designed to allow customer specified switches, sensors, time clocks or other on/off control devices to be incorporated into a DIGIDIM lighting control system.
The Mini Input Unit is a small, prewired, encapsulated printed circuit board and is suitable for inclusion into all standard size back boxes together with a suitable mains-rated switch
Mini Input Unit
A Mini Input Unit used with a four-gang mains switch in a single-gang back box.
Key Features
Preconfigured with touch dimmer inputs for two groups.
Fits into all standard size back boxes and architrave style back boxes.
Touch dimming with a momentary push switch.
Can be used with momentary or latching switches.
Fully programmable using DIGIDIM Toolbox software.
Technical Data
Connections
Inputs:
4 inputs (active low)COM Input Ground
Overload protection:
± 7 V
Short-circuit current:
0.5 mA maximum
Debounce period:
50 ms
Voltage-free switched inputs:
5 V nominal with switch open, must be less than 0.3 V with switch closed.
Isolation:
No isolation from DALI network:switches must provide user protection.
Cable requirements
DALI:
DALI Ribbon cable terminated with 1.2 mm ferrules.
Cable length
170 mmCaution: Do not increase the length of the wires. This can cause interference problems.
Power
DALI supply output:
None (Use external DALI power supply.)
DALI consumption:
10 mA
Mechanical data
Dimensions:
Encapsulated printed circuit board
Weight:
10 g
IP code:
IP20
Mounting:
For installation in a suitably enclosed location only.