The Siemens 6ES7134-6PA21-0BU0 is an ET 200SP AI Energy Meter module that measures voltage, current, power, and energy on a per-phase basis for 3-phase systems plus neutral. It accepts 256 bytes of input data and delivers 20 bytes of output data, communicating over the ET 200SP backplane at firmware V8.0.
Kit completeness check
The module is supplied alone. For operation it requires a BU type U0 BaseUnit (2-wire connection), ordered separately. Verify the BaseUnit is on hand before the slot is assigned — no holes in the box. Mechanical footprint: 58 mm depth x 20 mm width x 73 mm height, fitting any mounting position. Wiring to the BaseUnit supports shielded or unshielded cable runs up to 200 m, terminated through the spring-cage connectors on the BU type U0.
Lifecycle & sourcing posture
This is the module to specify for new builds or spares, with firmware V8.0 as the current revision. Sourced to order; RFQ for lead time and availability.
Diagnostic alarm, limit value alarm, and hardware interrupt with monitoring of up to 16 freely selectable process values give real-time fault visibility. The module supports isochronous mode? No — isochronous mode is not supported, so it is not suited for cycle-synchronous applications demanding T1 deterministic updates. Rated supply 24 V DC, drawn from the backplane bus via the BaseUnit. Typical power loss is 400 mW, leaving margin for dense modules on the same segment. Overvoltage category CAT II per IEC 61010-1, with a maximum secondary-side voltage of 300 V. Input resistance 120 kΩ per channel.