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Bộ điều khiển Ballasts Helvar - 474 4 × 16 A Ballast Controller
Bộ điều khiển Ballasts Helvar - 474 4 × 16 A Ballast Controller
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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:
0–10 V:
source 10 mA
1–10 V:
sink 100 mA
DALI broadcast:
source 100 mA
DSI®:
source 100 mA
PWM:
source 100 mA
Technical Data
Connections
Mains/relay/output:
Solid core: up to 4 mm²Stranded: 2.5 mm²
DALI:
0.5 mm² – 1.5 mm²Max. length: 300 m @ 1.5 mm²
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.