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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:
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0–10 V: |
source 10 mA |
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1–10 V: |
sink 100 mA |
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DALI broadcast: |
source 100 mA |
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DSI®: |
source 100 mA |
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PWM: |
source 100 mA |
Technical Data
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Connections |
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Mains/relay/output: |
Solid core: up to 4 mm²Stranded: 2.5 mm² |
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DALI: |
0.5 mm² – 1.5 mm²Max. length: 300 m @ 1.5 mm² |
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SDIM/DMX: |
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: |
100 VAC – 240 VAC (nominal)85 VAC – 264 VAC (absolute)45 Hz – 65 Hz |
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Power consumption: |
2.4 W (minimum) to 11 W (all outputs fully loaded) |
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External protection: |
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: |
2 mA |
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Inputs |
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Communication: |
DALI, SDIM and DMX |
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Override: |
Wired override input |
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User interface: |
2 push buttons for configuration |
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Outputs |
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0–10 V: |
Source 10 mA |
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1–10 V: |
Sink 100 mA |
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DALI/DSI®: |
(50 ballasts) Source 100 mA |
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PWM +/–: |
(50 ballasts) Source 100 mA |
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Relays |
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Channels: |
4 |
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Relay contacts: |
High inrush (800 A at 200 μs), single pole normally open (SPNO) |
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Max. load per contact: |
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: |
0 °C to +40 °C |
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Relative humidity: |
Max. 90 %, noncondensing |
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Storage temperature: |
–10 °C to +70 °C |
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Mechanical data |
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Dimensions: |
160 mm × 90 mm × 58 mm |
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Housing: |
DIN-rail case; 9U |
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Weight: |
280 g |
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Mounting: |
DIN rail (installation in switchgear/controlgear cabinet) |
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IP code: |
IP30 (IP00 at terminals) |
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Conformity and standards |
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EMC emission: |
EN 55015 |
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EMC immunity: |
EN 61547 |
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Safety: |
EN 61347-2-11 |
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DALI: |
According to DALI standard IEC 62386, with Helvar additions |
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SDIM: |
According to Helvar SDIM protocol |
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DMX: |
DMX512-A protocol (max. refresh rate: 33 Hz) |
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Isolation: |
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: |
Complies with WEEE and RoHS directives. |