SIEMENS 6ES7634-2BF02-0AE3 – Integrated PLC & HMI Compact Panel Unit | SIMATIC C7-634 DP
Engineering Background: The SIMATIC C7-634 DP represents Siemens’ integrated automation philosophy — combining a full S7-300 series PLC CPU with an operator panel (OP) into a single compact housing. Designed for space-constrained control cabinets in discrete manufacturing and process automation, the C7-634 DP eliminates the need for separate HMI wiring and reduces panel footprint by up to 40% compared to standalone CPU + OP configurations.
Product Positioning: The 6ES7634-2BF02-0AE3 is the PROFIBUS-DP variant of the C7-634 series, targeting applications that require integrated visualization, local I/O control, and fieldbus connectivity in a single certified unit. It is the preferred choice for OEM machine builders and system integrators operating within the SIMATIC S7-300 ecosystem.
Complete Technical Specifications
- Part Number / SKU: 6ES7634-2BF02-0AE3
- Product Family: SIMATIC C7-634 DP
- Form Factor: Compact Panel Unit (Integrated CPU + OP)
- Integrated CPU: Equivalent to S7-300 CPU 314
- Display: STN monochrome LCD, 5.7-inch
- Resolution: 320 × 240 pixels (QVGA)
- Keypad: Membrane keypad with function keys and softkeys
- Work Memory: 96 KB (program + data)
- Load Memory: 512 KB integrated Flash EPROM; expandable via MMC
- Digital Inputs (Integrated): 16 DI (24 V DC)
- Digital Outputs (Integrated): 16 DO (24 V DC, 0.5 A)
- Communication Interface 1: PROFIBUS-DP (up to 12 Mbit/s), DP Master/Slave
- Communication Interface 2: MPI (Multi-Point Interface), 187.5 kbit/s
- Communication Interface 3: RS-232 (PtP for programming / HMI configuration)
- Power Supply: 24 V DC (20.4 – 28.8 V DC)
- Current Consumption: Approx. 1.2 A at 24 V DC
- Operating Temperature: 0 °C to +55 °C
- Storage Temperature: −20 °C to +70 °C
- Relative Humidity: 10% – 95% (non-condensing)
- Protection Rating: IP65 (front panel); IP20 (rear)
- Mounting: Panel cutout mounting (portrait/landscape)
- Dimensions (W × H × D): 310 × 230 × 120 mm (approx.)
- Weight: Approx. 1.6 kg
- Certifications: CE, UL, cUL, ATEX (Zone 2 with appropriate enclosure)
- Programming Software: STEP 7 V5.x / ProTool (HMI configuration)
- Firmware Version: Compatible with 0AE3 hardware revision
Proven Application Environments
- Discrete Manufacturing: Assembly line control with integrated operator guidance screens — eliminates separate HMI panel and reduces wiring complexity.
- Packaging Machinery: OEM packaging lines requiring compact footprint, local I/O, and PROFIBUS-DP connectivity to servo drives and distributed I/O (ET 200S, ET 200M).
- Conveyor & Material Handling: Station-level control with operator acknowledgment screens; IP65 front panel withstands wash-down and dust environments.
- Water & Wastewater Treatment: Remote pump station control with local visualization; MPI port enables programming without disconnecting PROFIBUS network.
- Building Automation: HVAC and BMS sub-controllers where panel space is limited and a combined PLC/HMI reduces installation cost.
- Food & Beverage: Hygienic-area machine control; IP65 front panel meets basic ingress protection requirements for splash zones.
Engineering Advantages
- Integrated Architecture: Single unit replaces CPU 314 + OP 7 + interconnect cables — reduces BOM count, panel space, and potential failure points.
- PROFIBUS-DP Master/Slave: Supports up to 125 DP slaves; enables distributed I/O expansion without additional communication modules.
- MPI Programming Port: Allows STEP 7 programming and online diagnostics while PROFIBUS-DP network remains live — critical for maintenance without production downtime.
- IP65 Front Panel: Suitable for direct panel mounting in industrial environments without additional protective enclosure on the operator side.
- Flash EPROM Load Memory: Program retention without battery dependency for load memory; reduces maintenance overhead in remote installations.
- S7-300 Instruction Set Compatibility: Full compatibility with existing S7-300 program libraries — minimizes re-engineering effort when upgrading from standalone CPU 314 installations.
System Architecture & Signal Flow
The 6ES7634-2BF02-0AE3 operates as a self-contained automation node. The integrated CPU executes the STEP 7 user program cyclically, scanning the 16 onboard DI inputs and updating the 16 DO outputs each scan cycle. The PROFIBUS-DP master interface polls distributed I/O slaves (e.g., ET 200S, ET 200M, drives) and maps their process images into the CPU’s I/O address space. The integrated OP panel reads and writes process variables directly from the CPU’s data blocks (DBs) and memory bits (M), displaying operator screens configured in ProTool. The MPI interface provides a secondary programming and HMI network connection, allowing STEP 7 online access and S7-300 network topology integration without interrupting the DP fieldbus.
Typical signal flow: Field sensors → Onboard DI / DP Slave I/O → CPU Program Scan → DO / DP Slave Outputs → Actuators; Operator input via membrane keys → OP screen logic → CPU DB/M writes → Process response.
Sourcing & Quality Verification
- Origin: Genuine SIEMENS product; sourced through authorized industrial distribution channels.
- Condition: New / Refurbished stock available — condition specified at time of quotation.
- Verification: Each unit undergoes functional power-on test and firmware revision check prior to shipment.
- Traceability: Hardware revision (0AE3) and serial number documented on shipping manifest.
- Packaging: Original SIEMENS anti-static packaging or equivalent ESD-safe packaging for refurbished units.
- Warranty: 12-month warranty against manufacturing defects; DOA replacement within 7 business days.
Procurement Process
- Confirm Requirement: Verify part number 6ES7634-2BF02-0AE3 against your BOM or existing installation documentation. Check hardware revision compatibility (0AE3).
- Request Quotation: Contact Konmask.com via the product page or email support@konmask.com with quantity, required condition (new/refurbished), and delivery timeline.
- Order Confirmation: Purchase order issued; lead time confirmed (typically 3–7 business days for in-stock units; 2–4 weeks for sourced units).
- Shipment & Documentation: Unit shipped with packing list, test report, and hardware revision certificate. DHL / FedEx / UPS express options available.
- Incoming Inspection: Recommended: verify serial number, inspect connector pins, perform power-on test before installation.
- Technical Support: Pre- and post-sale engineering support available via email or phone for integration questions.
Technical FAQ
Q: Is the 6ES7634-2BF02-0AE3 compatible with TIA Portal?
A: The C7-634 DP is a legacy S7-300 platform and is programmed with STEP 7 Classic (V5.x). It is not natively supported in TIA Portal. Migration to a SIMATIC S7-1200/1500 + KTP panel is recommended for new TIA Portal projects.
Q: Can the onboard I/O be expanded?
A: Yes. Via the PROFIBUS-DP master port, up to 125 DP slaves (e.g., ET 200S, ET 200M, SINAMICS drives) can be connected, significantly expanding the I/O capacity beyond the 16 DI / 16 DO onboard.
Q: What is the difference between hardware revisions (e.g., 0AE3 vs. 0AE3)?
A: The suffix 0AE3 denotes the hardware revision. Always match the revision to your existing spare parts list or consult the SIEMENS product lifecycle documentation to confirm compatibility with your installed firmware version.
Q: Does the unit require a backup battery?
A: A backup battery (or supercap, depending on revision) is required to retain the real-time clock and RAM data block contents during power loss. The Flash EPROM load memory does not require battery backup. Check the unit’s battery status indicator on first power-up.
Q: What is the front panel protection rating?
A: IP65 when correctly installed in a panel cutout with the supplied gasket. The rear of the unit is IP20 and must be installed inside a suitable enclosure.
Q: Can I use this unit as a PROFIBUS-DP slave instead of master?
A: Yes. The 6ES7634-2BF02-0AE3 supports both DP Master (Class 1) and DP Slave modes, configurable in STEP 7 HW Config.
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