494 4 × 10 A Relay Unit
4-Channel Relay Unit (494)
The 4-Channel Relay Unit is a DALI-compatible interface unit designed to allow nondimmable loads to be incorporated into a DIGIDIM lighting control system. The relay unit is a DIN-rail mounted unit that can control four individually programmable relays. The relays are ‘normally open’, volt-free and can switch resistive loads of up to 10 A.
The relay unit is provided with a status LED, a physical selection switch and four relay state indicators. The status LED provides status and a fault indication. The physical selection switch is used to identify the device during system configuration and also acts as a manual override. The four relay state indicator LEDs are illuminated when the respective relay is closed.
Note: This unit does not contain a DALI power supply. Therefore, one must be present elsewhere in the system.
Key Features
- Four individually programmable relays, normally open and volt-free.
- Relays are internally isolated permitting separate phases to be controlled in one unit.
- Each relay can be manually controlled using the physical selection switch.
- All DALI functions are programmed with either DIGIDIM Toolbox or Designer software.
- DIN-rail mounted and only 88 mm wide.
Technical Data
Relay loads (max.)
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Resistive:
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10 A
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Incandescent:
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8 A
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Inductive:
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5 A
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Electronic ballasts:
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15 pcs Helvar Type EL–HF/CHF
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Connections
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DALI:
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Solid core up to 4 mm²Stranded up to 2.5 mm²
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DALI cable:
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Removable connector blocksWire section: 0.5 mm² – 1.5 mm² stranded or solid core
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Cable rating:
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All cables must be mains rated. Note: If equipment is used in an electrically noisy environment, the DALI cable should be screened and connected to the earth.
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Power
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Mains supply:
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220 VAC – 240 VAC50 Hz – 60 Hz
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Mains supply output:
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None
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DALI consumption:
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2 mA
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Mechanical data
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Dimensions:
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88 mm × 58 mm × 90 mm
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Housing:
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DIN-rail case 88 mm wide
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Weight:
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300 g
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Mounting:
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DIN rail (installation in switchgear/controlgear cabinet)
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IP code:
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IP30
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Operating and storage conditions
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Ambient temperature:
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0 °C to +40 °C
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Relative humidity:
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Max. 90 %, noncondensing
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Storage temperature:
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−10 °C to +70 °C
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Conformity and standards
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EMC emission:
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EN 55015
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EMC immunity:
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EN 61547
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Safety:
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EN 61347-2-11
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Isolation:
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4 kV
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Environment:
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Complies with WEEE and RoHS directives.
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