Bộ điều khiển Ballasts Helvar - 458/CTR8 8 × 16 A Ballast Control Module

 8-Channel Ballast Controller Module (458/CTR8)


 The 458/CTR8 is an eight-channel digital ballast controller module capable of controlling 0–10 V, 1–10 V, DSI®, DALI broadcast or PWM loads. It has both a DALI and an SDIM/ DMX interface, and therefore can be fully integrated into a DIGIDIM or an Imagine router system. It can also be used on the TouchPanel or on standalone DALI or DIGIDIM systems.

The module has eight high-inrush relays, rated at 16 A per channel.

The front of the module is equipped with an LCD display and a keypad to set basic configuration parameters and provide basic control of channel and output levels.

The module is easily fitted to a 458Mx chassis, in which each load channel is protected by an individual MCB.

Note: The 458/CTR8 8-Channel Ballast Controller Modules are supplied separately from the 458Mx chassis.

 Key Features

  • Easily attached to a 458Mx chassis and connected to the mains supply for quick installation.
  • LCD display screen and a five-button keypad for monitoring, configuration and manual control.
  • Universal mains power supply: 85 VAC – 264 VAC (absolute).


Control Features

Each channel of the control module can be configured to operate in any of the following modes:

  • 0–10 V → source 20 mA
  • 1–10 V → sink 100 mA
  • DSI® (Digital Signal Interface) → source 100 mA
  • PWM (Pulse Width Modulation) → source 100 mA
  • DALI broadcast → source 100 mA


Technical Data



0.5 mm² – 1.5 mm² (max. 300 m @ 1.5 mm²)


0.22 m² – 1.5 mm² low-loss RS485 Type (multistranded, twisted and shielded)

Override (OVR):

0.5 mm² – 1.5 mm² (screened and twisted)


Relay contacts:

High inrush, single pole, single throw (SPST), normally open (NO), volt-free


400 VAC

Max. load per contact:

16 A resistive/incandescent, 10 A HID (cos y = 0.6).Note: For ballasts, quantity is limited by MCB: refer to manufacturer’s data. External protection must not exceed 16 A type C MCB.


0–10 V:

Source 20 mA

1–10 V (50 ballasts):

Sink 100 mA

DALI/DSI® (50 ballasts):

Source 100 mA

PWM +/– (50 ballasts):

Source 100 mA


Mains supply:

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

Power consumption:

1.2 W (excluding loads)


Power circuit protection:

6 A max. external protection, earth mandatory

Thermal protection:

Control board – resettable fuse



Attached to 458M1, 458M2, or 458M3 chassis

Mechanical data


105 mm × 360 mm × 170 mm


Powder coated steel (black)


2.2 kg

IP code:


Operating conditions and storage

Ambient temperature:

0 °C to +40 °C

Relative humidity:

Max. 90 %, noncondensing

Storage temperature:

–10 °C to +70 °C


Conformity and standards

EMC emission:

EN 55015

EMC immunity:

EN 61547


EN 60950

DALI data transfer:

According to DALI standard IEC 60929, with Helvar extensions

SDIM data:

Helvar protocol (RS485, 115 kbps)

DMX data:

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


Complies with WEEE and RoHS directives.


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