4-Channel Ballast Controller (474)
The DIGIDIM 474 is a 4-channel ballast controller fitted with high-inrush relays rated at 16 A per channel. These relays handle short-lived high peak currents during switch-on of loads.
The outputs can be configured to match common ballast control loads including 0/1–10 V, DSI®, DALI broadcast and PWM. They can be set to be independent of, or paired with, relay channels. The 474 ballast controller can operate with a Helvar DIGIDIM or Imagine lighting control system. It is a DIN rail mounted device for ease of installation.
The 474 ballast controller has an intuitive LED segment display and push buttons for monitoring, manual configuration and control purposes.
Key Features
- High inrush specification relays
- Wired override input
- LED segment display and push buttons
- Multiple output configurations of:
0–10 V:
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source 10 mA
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1–10 V:
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sink 100 mA
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DALI broadcast:
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source 100 mA
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DSI®:
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source 100 mA
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PWM:
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source 100 mA
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Technical Data
Connections
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Mains/relay/output:
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Solid core: up to 4 mm²Stranded: 2.5 mm²
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DALI:
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0.5 mm² – 1.5 mm²Max. length: 300 m @ 1.5 mm²
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SDIM/DMX:
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0.22 mm² – 1.5 mm² low-loss RS485 type (multistranded, twisted and shielded). Max. length: 1000 m (low-loss cable). Examples: Belden 8102 or Alpha 6222C.Note: One twisted pair for A and B (85 Ω to 100 Ω impedance), one core or twisted pair for 0 V, and shield for screen.
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Power
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Mains supply:
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100 VAC – 240 VAC (nominal)85 VAC – 264 VAC (absolute)45 Hz – 65 Hz
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Power consumption:
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2.4 W (minimum) to 11 W (all outputs fully loaded)
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External protection:
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The mains supply must be protected at 6 A maximum. The relays must be protected by a 16 A Type C MCB maximum.
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DALI consumption:
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2 mA
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Inputs
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Communication:
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DALI, SDIM and DMX
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Override:
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Wired override input
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User interface:
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2 push buttons for configuration
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Outputs
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0–10 V:
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Source 10 mA
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1–10 V:
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Sink 100 mA
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DALI/DSI®:
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(50 ballasts) Source 100 mA
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PWM +/–:
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(50 ballasts) Source 100 mA
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Relays
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Channels:
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4
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Relay contacts:
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High inrush (800 A at 200 μs), single pole normally open (SPNO)
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Max. load per contact:
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16 A resistive/incandescent; 10 A HID (cos y = 0.6).For ballasts, quantity is limited by MCB: refer to the manufacturer’s data.
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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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Mechanical data
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Dimensions:
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160 mm × 90 mm × 58 mm
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Housing:
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DIN-rail case; 9U
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Weight:
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280 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 (IP00 at terminals)
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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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DALI:
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According to DALI standard IEC 62386, with Helvar additions
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SDIM:
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According to Helvar SDIM protocol
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DMX:
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DMX512-A protocol (max. refresh rate: 33 Hz)
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Isolation:
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All connectors are isolated from each other, except for SDIM/DMX to Override, and ballast output 1–2 to ballast output 3–4.
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Environment:
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Complies with WEEE and RoHS directives.
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