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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.

Power

Mains supply:

100 VAC – 240 VAC (nominal)85 VAC – 264 VAC (absolute)45 Hz – 65 Hz

Power consumption:

2.4 W (minimum) to 11 W (all outputs fully loaded)

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.

DALI consumption:

2 mA

Inputs

Communication:

DALI, SDIM and DMX

Override:

Wired override input

User interface:

2 push buttons for configuration

Outputs

0–10 V:

Source 10 mA

1–10 V:

Sink 100 mA

DALI/DSI®:

(50 ballasts) Source 100 mA

PWM +/–:

(50 ballasts) Source 100 mA

Relays

Channels:

4

Relay contacts:

High inrush (800 A at 200 μs), single pole normally open (SPNO)

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.

Operating and storage conditions

Ambient temperature:

0 °C to +40 °C

Relative humidity:

Max. 90 %, noncondensing

Storage temperature:

–10 °C to +70 °C

 

 

 

Mechanical data

Dimensions:

160 mm × 90 mm × 58 mm

Housing:

DIN-rail case; 9U

Weight:

280 g

Mounting:

DIN rail (installation in switchgear/controlgear cabinet)

IP code:

IP30 (IP00 at terminals)

Conformity and standards

EMC emission:

EN 55015

EMC immunity:

EN 61547

Safety:

EN 61347-2-11

DALI:

According to DALI standard IEC 62386, with Helvar additions

SDIM:

According to Helvar SDIM protocol

DMX:

DMX512-A protocol (max. refresh rate: 33 Hz)

Isolation:

All connectors are isolated from each other, except for SDIM/DMX to Override, and ballast output 1–2 to ballast output 3–4.

Environment:

Complies with WEEE and RoHS directives.


Collections: Ballast controllers, Chiếu sáng bệnh viện, Chiếu sáng khách sạn, resort, Chiếu sáng trường học, Chiếu sáng văn phòng

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