Siemens5WG1141-1AB21KNX to DALI Gateway, 2 Channels, 64 DALI Control Gear per Channel, DALI-2 and Edition 1 Support, DIN Rail

Product Description

What this part is

A Siemens 5WG1141-1AB21 KNX/DALI Gateway Twin plus, catalogue designation N 141/21. It is a DIN-rail mounted gateway between a KNX installation and DALI lighting, with two independent DALI channels. Each channel carries up to 64 DALI control gear such as electronic ballasts and LED drivers, and each channel additionally accepts DALI sensors including presence detectors and DALI pushbutton interfaces.

Decoding the designation

The order number 5WG1141-1AB21 corresponds to the Siemens catalogue name N 141/21. The N prefix marks a DIN-rail N-system device. Within the 141 gateway family the trailing number states the channel count: N 141/03 is the single-channel Gateway plus, N 141/21 is the two-channel Twin plus, and N 141/31 is the Twin in its own variant. The word Twin refers to the two channels, and plus denotes the variant that supports DALI sensors on the DALI line rather than control gear alone.

What these specs mean in practice

DALI addresses each ballast or driver individually over a two-wire line, so a luminaire can be regrouped in software without rewiring. KNX handles the building-wide logic. The gateway is the translator between the two, mapping KNX group addresses onto DALI short addresses and DALI groups, which is what lets a KNX pushbutton or presence detector dim a specific set of luminaires.

Two channels on one device matter for capacity and for segregation. Sixty-four addresses is the DALI limit per line, so two channels give 128 addressable gear on a single 4-module gateway, and they also let two floors or two zones stay on separate DALI lines so a fault on one line leaves the other running. Support for DALI sensors on the DALI line means occupancy and daylight input can arrive over the same two wires as the luminaires, which reduces the cabling needed for daylight-linked control.

The gateway accepts control gear built to IEC 62386 Edition 1 and to Edition 2, known as DALI-2. The two editions are backwards compatible, so a mixed installation of older ballasts and newer DALI-2 drivers operates from one gateway.

Published specifications

Function: KNX to DALI gateway
Catalogue designation: N 141/21, KNX/DALI Gateway Twin plus
DALI channels: 2, independent
DALI control gear per channel: up to 64
DALI sensors: supported per channel, including presence detectors and DALI pushbutton interfaces
DALI standard: IEC 62386 Edition 1 and Edition 2 (DALI-2)
Bus system: KNX / Siemens GAMMA instabus
Mounting: DIN rail, N-system distribution board device
Order number: 5WG1 141-1AB21

Quantity and configuration

Sold as 1 Pc — one gateway module. The unit is supplied without a KNX power supply, without DALI control gear and without bus connection terminals.

Installation and setup notes

The gateway takes the KNX bus on its bus terminal and presents two DALI terminal pairs for the DALI lines. DALI wiring is polarity-free and runs in the same conduit as the mains supply to the luminaires, which is one of the practical advantages of the protocol. Commissioning runs from ETS using the Siemens application program for N 141/21, where DALI gear is addressed and assigned to groups; the gateway holds that addressing, so a replacement gateway is re-commissioned against the existing luminaires.

Interchange guidance

The N 141/03 (order number 5WG1141-1AB03) is the single-channel KNX/DALI Gateway plus and the N 141/31 (order number 5WG1141-1AB31) is a further Twin variant. All three share the KNX-to-DALI function and the same technical product documentation, and they differ in channel count and variant features, so they are related devices in one family rather than interchangeable articles. A direct replacement for a two-channel Twin plus installation matches order number 5WG1 141-1AB21 or catalogue designation N 141/21.