The ABB DP640 3BHT300057R1, also cataloged as the DP640 Speed Measurement Module, operates as a dedicated hardware component for pulse acquisition and rotational speed calculations within Advant Controller AC110/160 systems.

Technical Identifier Matrix

• Base Hardware Model: DP640
• Primary Part Number: 3BHT300057R1
• Alternate Spare Part Number: 3BHT300057R0001
• Product Description: Rotational Speed Meter Module
• System Platform: Advant Controller AC110 / AC160 Architecture
• Primary Functional Task: Pulse frequency measurement and speed value calculation

Hardware Specifications

ABB Backplane Bus Integration & Signal Conditioning

The DP640 3BHT300057R1 pulse processing board interfaces directly with the Advant Controller AC110/160 internal system backplane, transferring high-frequency rotational speed values to the central CPU without cycle lag. Its onboard counting architecture processes raw sensor pulse trains, converting input frequencies into scaled numerical velocity metrics. Galvanic isolation barriers shield internal backplane logic from field-induced electrical transients, maintaining microsecond update determinism across real-time control loops.

Package Contents & Ordering Information

• 1x ABB DP640 3BHT300057R1 Speed Measurement Module
• 1x Factory hardware specification documentation sheet

Field Installation Guidelines

• Subrack Insertion: Align the DP640 card edges with the designated subrack guide rails. Slide the module rearward until the backplane multi-pin connector seats firmly into the backplane motherboard.
• Transducer Wiring: Connect pulse pickup wiring to the corresponding front terminal unit using twisted-pair shielded cable (AWG 22 to AWG 16).
• Shielding Protocol: Clamp cable braid shields to the subrack ground rail utilizing 360-deg braid shield grounding connections to suppress high-frequency electrical noise interference.
• Thermal Clearances: Ensure a 100 mm vertical ventilation gap above and below the card rack assembly to facilitate natural convection cooling inside the cabinet enclosure.

Frequently Asked Questions

• Is hot-swapping supported for the DP640 speed measurement module during active backplane operation?

  No. Subrack backplane power and external 24 VDC sensor power must be fully isolated before removing or installing the DP640 module to prevent backplane bus transients.

• How are field pickup sensor pulse signals isolated from internal processing logic?

  The DP640 module utilizes internal optocouplers and isolation transformers to provide galvanic separation between field input channels and backplane processing circuits.

• What signal cable configuration is specified for connecting speed sensors to the DP640 input?

  Use individually shielded twisted-pair conductors with overall 360-deg braid shield clamping connected directly to the system grounding bar.

• What supply voltage powers the module's internal logic and interface drivers?

  The module derives logic processing power from the 5 VDC subrack backplane bus while utilizing 24 VDC loop power for field transducer interface conditioning.

• How does the DP640 module transfer converted speed metrics to the controller CPU?

  Converted numerical frequency and velocity registers transfer directly over the high-speed internal backplane bus during cyclic I/O scan sequences.

• What functional earthing procedure applies to the DP640 board chassis?

  Earthing is established via the subrack mechanical guide chassis and rear backplane grounding pins, maintaining an ground connection resistance below 0.1 Ohm.

• What storage temperature range is specified for spare DP640 modules?

  Uninstalled spare modules must be stored in original anti-static packaging within an ambient temperature range of -40 to +85 deg C in non-condensing environments.

• Does the DP640 module require hardware jumper settings to select pulse input thresholds?

  Channel scaling and input signal thresholds are set through project engineering software parameters transferred during controller startup initialization.