The ABB SV/S 30.640.5.1 (order code 2CDG110146R0011) is a 640 mA KNX power supply with diagnostics. It generates and monitors the KNX system voltage (SELV) with an integrated choke on the main bus output, LED status indication, ETS communication objects and analysis via the ABB i-bus® Tool — so voltage, current and overload conditions can be supervised during commissioning and operation.

An additional 30 V DC output without choke can supply a second bus line when combined with a separate choke such as DR/S4.1. Never feed a KNX TP line from the unchoked output without the correct choke. Mains input covers a wide range typical of the SV/S 30 family (85…265 V AC). Housing is 4 MW, approx. 72 × 90 × 64.5 mm, net weight approx. 0.26 kg; max. power loss per ABB about 9 W.

For a non-diagnostic 640 mA supply see SV/S30.640.3.1. For battery-backed continuity see SU/S30.640.2. For auxiliary 24 V IP loads use CP-D 24/2.5 — not this 30 V bus supply.

Key Features — Diagnostics 640 mA

• 640 mA bus output: Main line with integrated choke, short-circuit and overload protected.
• Auxiliary 30 V output: Second SELV output for an additional line with external choke (DR/S4.1).
• ETS diagnostics objects: Bus voltage/current, overload and related status objects.
• ABB i-bus® Tool: Operating-state and line analysis without opening ETS.
• Wide-range mains: Typical SV/S 30 family AC input for global panel supply conditions.
• 4 MW MDRC: Compact DIN-rail footprint for distribution boards.

At a Glance

Specification	Detail
Product type	Power supply with diagnostics, 640 mA, MDRC
Order code	SV/S30.640.5.1 (2CDG110146R0011)
EAN	4016779866699
Rated bus current	640 mA
Main / aux outputs	Choked bus + 30 V DC without choke
Width / weight	4 MW / 0.26 kg
Power loss (max, ABB)	9 W
UPS alternative	SU/S30.640.2

Wiring, choke rules and diagnostic object lists are in the ABB technical data and product manual under Downloads.