Siemens 6ES7193-6BP20-0DA0 Base Unit BU15-P16+A10+2D

Product Overview

The Siemens 6ES7193-6BP20-0DA0 is a BaseUnit BU15-P16+A10+2D (BU Type A0) for the SIMATIC ET 200SP distributed I/O system. It serves as the mounting and connection platform for ET 200SP I/O modules, featuring 16 push-in process terminals and 10 auxiliary terminals with a 10 A auxiliary power group (A10). The 2D shared-potential configuration suits standard 24 V DC control systems where all field devices reference a common ground, while the new load group capability provides isolated power distribution for the module stack.

Key Specifications

• Product Type: BaseUnit BU15-P16+A10+2D, BU Type A0
• System: SIMATIC ET 200SP Distributed I/O
• Terminals: 16 push-in process terminals + 10 auxiliary terminals
• Total Terminals: 28 (16 process + 10 AUX + 2 potential distribution)
• Terminal Type: Push-in
• Rated Supply Voltage: 24 V DC (nominal)
• Operating Voltage Range: 20.4 V DC to 26.4 V DC (±10%)
• Max Supply Current (Total): 10 A at L+ and M terminals
• Auxiliary Power Group: A10 — 10 A maximum
• Power Group Configuration: 2D — two groups, same shared potential
• Per-Terminal Current (Process): 2 A maximum per terminal
• Slots: 1 (Type A0 / A1 compatible)
• Dimensions (W x H x D): 15 mm x 117 mm x 76 mm
• Weight: Approx. 48 g (0.048 kg) / 130 g (with packaging)
• Wire Gauge (Solid/Flexible): 0.14 mm² to 2.5 mm²
• Operating Temperature: -30 °C to +60 °C (horizontal), -30 °C to +50 °C (vertical)
• Mounting: DIN rail (ET 200SP carrier rail)
• Reverse Polarity Protection: Yes
• External Protection: 24 V DC / 10 A miniature circuit breaker required
• EAN: 4025515080879

Features & Benefits

• A10 auxiliary power group — delivers up to 10 A dedicated auxiliary capacity, supporting analog I/O modules and high-current-demand modules that the A0 variant cannot supply
• 2D shared potential configuration — both power groups share the same electrical potential, simplifying wiring in standard 24 V DC common-ground systems
• New load group starter — opens a new potential group, providing power isolation and improved fault diagnostics for the module stack
• Compact 15 mm BU15 form factor — enables dense I/O configurations with approximately 60% less panel footprint than legacy 40 mm+ base units
• Push-in terminal technology — tool-free, vibration-resistant connections per IEC 60947-7-1, reducing installation time and improving reliability in industrial environments

Typical Applications

• Automotive body-in-white and powertrain assembly lines with mixed digital/analog I/O
• Food & beverage conveyor and filling control nodes
• Modular machine builder platforms requiring standardized, swappable BaseUnits
• Brownfield retrofit projects expanding decentralized I/O without central panel rewiring
• Pharmaceutical packaging lines with analog sensor aggregation
• Emergency replacement scenarios requiring like-for-like swap without rewiring

Installation Guide

1. Verify ET 200SP carrier rail — confirm rail designation; do not mix ET 200SP with ET 200S or ET 200eco PN hardware.
2. Mount on de-energized DIN rail — slide the BaseUnit horizontally onto the carrier rail until fully seated with an audible click.
3. Install upstream protection — place a 24 V DC / 10 A miniature circuit breaker (Type B or C) on the supply line before the L+ terminal. This BaseUnit has no internal protection.
4. Connect supply voltage — wire 24 V DC to L+ and M terminals, observing correct polarity (reverse polarity protection is built-in).
5. Wire field devices — use conductors within 0.14–2.5 mm² range; push into terminals until the audible click confirms seating.
6. Perform tug-test and continuity verification — gently pull each conductor and check with a multimeter before applying power.
7. Install I/O module — seat a compatible ET 200SP Type A0 or A1 module onto the BaseUnit backplane.

FAQ

Q: What is the difference between 6BP20-0DA0 and 6BP00-0DA0?
A: The 6BP20-0DA0 carries the A10 auxiliary power group (10 A capacity with 10 auxiliary terminals), while the 6BP00-0DA0 has A0 (no auxiliary terminals). Both share the same 2D shared-potential configuration and 16 process terminals. Choose A10 when your I/O modules require auxiliary power (e.g., analog modules).

Q: What is the difference between 6BP20-0DA0 and 6BP20-0BA0?
A: The 0DA0 (2D) uses shared potential groups (same electrical potential), while the 0BA0 (2B) provides isolated power groups. Both have A10 auxiliary terminals. Choose 2D for standard common-ground 24 V DC systems; choose 2B when you need isolation between circuit segments.

Q: Can I use ET 200S modules with this BaseUnit?
A: No. ET 200S and ET 200SP have incompatible backplane pinouts. Attempting to install ET 200S modules will result in seating failure or electrical damage. Always verify the ET 200SP family designation on all modules.

Q: What happens if a process terminal is loaded above 2 A?
A: Each process terminal is rated at 2 A maximum. Exceeding this limit causes terminal overheating, potential output failure, and fire risk. Loads above 2 A must be switched through an external relay or power module fed from a separate supply.

Q: Is the 2D configuration suitable for mixed-potential field devices?
A: No. 2D means both power groups share the same potential. If your system requires electrically isolated groups (e.g., safety circuits or potential differences between segments), select the 6BP20-0BA0 (2B) variant instead.

Selection Tips

• Select 6BP20-0DA0 as your standard choice for ET 200SP builds with Type A0/A1 modules requiring auxiliary power and a common 24 V DC ground reference.
• If your module set has no auxiliary power demand, downgrade to 6BP00-0DA0 to reduce BOM cost.
• If your control architecture requires isolated power groups, upgrade to 6BP20-0BA0 (2B).
• Always cross-reference the part number against the EAN 4025515080879 before ordering to prevent cross-shipment errors.
• Plan for an external 24 V DC / 10 A circuit breaker in your BOM — this is not optional and must be installed upstream of every new potential group.
• Verify conductor gauge compatibility (0.14–2.5 mm²) with your site wiring standard before procurement.