Bộ Relay Helvar - Relay Unit 490 2 × 2.3 A Blinds Controller

Relay Unit 490 2 × 2.3 A Blinds Controller

 2-Channel Blinds Controller (490)

The 2-Channel Blinds Controller is a DALI-compatible interface unit that allows control of blinds and curtains in a DIGIDIM lighting control system. The blinds controller is a DIN-rail mounted unit that provides two independent control channels, each with two single-pole, volt-free contacts for switching up to 550 W up/down or power direction motors from a DIGIDIM system.

The unit has a status LED, a physical selection switch and relay-state indicators. The status LED provides status and a fault indication. The physical selection switch is used to identify the device during system configuration. The relay-state indicator LEDs are illuminated when the respective relay is closed.

Note: This unit does not contain a DALI power supply. Therefore, one must be present elsewhere in the system.

Connection details DALI Supply wiring Load wiring

 Key Features

• Up/Down mode operates in a ‘Break before Make’ manner to prevent motor damage.
• Relays are internally isolated permitting separate mains phases to be used for each control channel.
• All DALI functions are programmed with either DIGIDIM Toolbox or Designer software.
• DIN-rail mounted and only 88 mm wide.

 Installation Notes

• The blinds controller is for use with motors up to 550 W.
• The external mains supply to the unit must be protected. It is recommended that a 6 A MCB is used.
• All cabling must be 230 V mains rated.

Technical Data