We will arrange delivery within 3-5 days after receiving the payment.

Our express delivery: DHL and FedEx.

Quality packing for each product

Destination country all taxes & duty to be paid by buyer

Only part of the brand and model, if you have other product needs, please contact us.

ABB SPA-ZC21BB Bus Connection Module 

1. Key Parameters

• Product Model: SPA-ZC21BB
• Product Series: ABB SPA Series Industrial Bus Connection Modules (SPA System Backplane Interconnection, Distributed I/O Linking)
• Core Function: Enables data transmission between SPA-series automation components; provides bus signal amplification and termination; ensures electrical isolation between bus segments; supports modular expansion of SPA I/O networks
• Electrical & Bus Specifications:

  Parameter	Details	Performance Metrics
  Bus Protocol Compatibility	- Supported Bus: ABB SPA System Backplane Bus (proprietary, optimized for SPA I/O) - Data Rate: 1Mbps (max, full-duplex) - Bus Topology: Daisy-chain (supports up to 32 SPA modules per segment) - Bus Termination: Integrated 120Ω ±10% resistor (selectable via DIP switch)	Ensures low-latency data transmission (≤10ms per segment) for real-time control signals in distributed SPA systems
  Electrical Isolation	- Bus Segment Isolation: 2.0kV AC (1min, between input and output bus ports) - Common-Mode Rejection Ratio (CMRR): ≥70dB (at 50/60Hz) - Noise Immunity: EN 61000-6-2 (industrial immunity level) - Insulation Resistance: ≥200MΩ (at 500V DC)	Prevents ground loops and cross-talk between bus segments, critical in large facilities with distributed I/O (e.g., factory floors)
  Signal Amplification	- Gain: 1x (linear amplification for bus signals) - Signal Loss Compensation: Up to 3dB (restores degraded signals in long segments) - Maximum Segment Length: 100m (twisted-pair cable, 0.5mm²) - Cable Compatibility: Twisted-pair (100Ω impedance, 24~20 AWG)	Extends bus range by amplifying signals, enabling SPA systems to cover large areas (e.g., multi-floor factories, wide-span process plants)
  Safety & Protection	- Overvoltage Protection: ±6kV (ESD, contact; IEC 61000-4-2) - Short-Circuit Protection: Current limiting (bus ports, auto-recovery) - Flame Class: UL 94 V0 (housing material) - Safety Certification: IEC 61010-1, UL 508	Protects bus segments from electrical transients (e.g., static discharge, motor spikes) and reduces fire risk in control cabinets

• Mechanical Specifications:
  • Dimensions: 85mm (W) × 120mm (L) × 35mm (H) (compact design for SPA racks)
  • Mounting Type: Direct snap-on to ABB SPA system racks; compatible with EN 50022 DIN rails (35mm)
  • Housing Material: Glass-fiber reinforced polyamide (PA66+GF, impact-resistant)
  • Connection Type: Screw terminals (bus ports); DIP switch (termination control)
  • Weight: Approximately 200g
• Environmental Ratings:
  • Operating Temperature Range: -20℃~+65℃ (-4℉~149℉)
  • Storage Temperature Range: -40℃~+85℃ (-40℉~185℉)
  • Humidity Tolerance: 5%~95% RH (non-condensing, 40℃)
  • Vibration Resistance: 10~500Hz, 1g acceleration (IEC 60068-2-6; no mechanical loosening)
  • Shock Resistance: 20g (11ms half-sine, IEC 60068-2-27; no functional failure)
• Compliance Standards: CE, RoHS, ABB SPA System Compatibility Standard (V4.0+), IEC 61131-2

2. Key Features

• SPA System Optimization: Tailored for ABB SPA-series automation components—ensures seamless interconnection between SPA I/O modules (e.g., analog inputs, digital outputs), controllers, and expansion units, eliminating compatibility issues common with third-party bus modules.
• Bus Signal Amplification: Restores degraded bus signals (up to 3dB loss compensation) and extends segment length to 100m—enables SPA systems to scale across large industrial facilities (e.g., multi-bay manufacturing plants, sprawling refineries) without signal dropouts.
• 2kV Segment Isolation: Provides electrical isolation between bus segments—prevents ground loops (a major cause of bus failures in distributed systems) and protects sensitive SPA modules from voltage spikes in distant segments (e.g., outdoor I/O cabinets).
• Selectable Bus Termination: Integrated 120Ω resistor (toggled via DIP switch) eliminates the need for external terminators—simplifies setup of daisy-chain topologies and ensures proper signal termination at segment endpoints, reducing reflection-induced errors.
• Compact Modular Design: Snap-on mounting to SPA racks and DIN rail compatibility—saves space in control cabinets and enables flexible installation alongside other SPA components; lightweight (200g) design reduces rack load.
• Wide Environmental Tolerance: -20℃~+65℃ operating range and 1g vibration resistance—operates reliably in harsh conditions: cold storage (food processing), high-temperature zones (power plants), and high-motion areas (conveyor systems).
• Robust Protection Mechanisms: ESD, overvoltage, and short-circuit protection safeguard bus segments—prevents costly downtime caused by electrical anomalies (e.g., static discharge during maintenance, short circuits from damaged cables).

3. Application Fields

• SPA System Bus Expansion: Primary application—linking SPA components in distributed networks:
  • Automotive Manufacturing Plants: Connects SPA digital input modules (tracking conveyor sensors) in multiple assembly bays to a central SPA controller; signal amplification extends bus range to 100m per segment, enabling multi-bay automation without signal loss.
  • Chemical Plant Process Racks: Links SPA analog input modules (reactor temperature/pressure sensors) across distant process skids; 2kV segment isolation prevents ground loops between skids, ensuring accurate measurement of critical process variables.
• Industrial Distributed I/O Networks: Scaling SPA I/O across large areas:
  • Warehouse Automation Systems: Connects SPA proximity sensors (pallet detection) and motor control modules in wide-span warehouses; daisy-chain topology supports 32 modules per segment, reducing the number of controllers needed and lowering costs.
  • Water Treatment Plant Pump Stations: Links SPA digital output modules (pump control) and level sensors in remote pump stations to a central SPA DCS; ESD protection (±6kV) withstands outdoor static discharge, ensuring reliable pump operation.
• Harsh Environment Automation: Bus connection in extreme conditions:
  • Mining Underground SPA Systems: Connects SPA gas detectors and conveyor control modules in underground tunnels; wide temperature range (-20℃~+65℃) handles cold underground environments, while vibration resistance (1g) withstands tunnel machinery motion.
  • Steel Mill Hot Rolling Lines: Links SPA temperature sensors (roll surface thermometers) and SPA drive modules to a central controller; noise immunity (EN 61000-6-2) blocks interference from large mill motors, ensuring accurate temperature monitoring and roll speed control.
• Infrastructure & Facility Automation: SPA bus for building and infrastructure systems:
  • Commercial Building HVAC Control: Connects SPA airflow sensors and damper control modules across multiple floors; compact design fits in building control panels, while bus isolation prevents interference between HVAC zones.
  • Airport Baggage Handling Systems: Links SPA encoder modules (conveyor speed) and sorting control modules in large baggage halls; signal amplification extends bus range to cover the entire hall, ensuring synchronized baggage sorting.

4. Precautions

• Bus Topology & Termination (Critical): Use only daisy-chain topology (star topology is unsupported) and activate the 120Ω terminator only at the first and last modules in each bus segment—incorrect termination or topology causes signal reflection, leading to bus communication failures (e.g., "module not detected" errors).
• Installation & Wiring Safety:
  • Cable Selection: Use twisted-pair cable (100Ω impedance, 0.5mm²) for bus connections—unshielded or non-twisted cables increase noise susceptibility, degrading signal quality; maximum segment length must not exceed 100m to avoid signal loss.
  • Isolation Integrity: Maintain 2kV creepage/clearance distances (≥6mm) between bus terminals and other electrical components—reduced distances compromise isolation, creating safety risks and increasing cross-talk.
  • Polarity & Wiring: Follow correct bus polarity (marked "Bus In" and "Bus Out" on the module) — reversed wiring breaks the bus segment, disconnecting all downstream modules; verify wiring with a multimeter before powering on.
• Operation & Maintenance:
  • Diagnostic Monitoring: Monitor bus health via SPA system diagnostics (e.g., signal strength, error rate)—signal strength <80% indicates cable damage or excessive length; address immediately to prevent intermittent communication.
  • 定期检查: Inspect quarterly for:
    • Loose bus terminals (common after vibration events)
    • Damaged cable insulation (from sharp rack edges)
    • DIP switch position (ensure termination is only active at segment endpoints)
      Re-tighten terminals and replace damaged cables to maintain bus integrity.
  • Module Loading: Do not exceed 32 SPA modules per bus segment—overloading increases bus traffic, leading to latency and data collisions; split large networks into multiple segments with SPA-ZC21BB modules as bridges.
• Environmental Limitations:
  • Temperature Extremes: Do not operate above +65℃ or below -20℃—high temperatures degrade isolation components, while extreme cold increases signal latency; use cabinet heaters/coolers in extreme zones to maintain -20℃~+65℃.
  • Chemical Exposure: Avoid contact with strong solvents (e.g., acetone) and corrosive substances (e.g., saltwater)—these damage the PA66+GF housing and insulation; use protective enclosures in chemical or offshore environments.
• Replacement & Spare Parts:
  • Genuine ABB Modules: Use only genuine ABB SPA-ZC21BB modules—non-genuine alternatives lack SPA system compatibility and proper isolation, leading to bus failures and potential damage to SPA controllers/I/O modules.
  • Spare Inventory: Maintain 1~2 spare modules per 10 bus segments—bus connection modules are critical for network continuity; spares reduce downtime from days (delivery lead time) to 30 minutes during segment failures
• 
•  

The structure and details of the product：

Please make an inquiry for more models

ABB 3HAC022104-001

ABB DSQC532B 3HAC023447-001

ABB 3HAC024628-001

ABB 3HAC025396-001

ABB 3HAC025527-004 DSQC639

ABB 3HAC025562

ABB 3HAC026840-001 DSQC667

ABB 3HAC029024-001

ABB 3HAC029105-001

ABB 3HAC029157-001 DSQC668

ABB 3HAC031851-001 DSQC633A

ABB 57120001-HZ DSAI155

ABB 57120001-KH DSTA156

ABB 57120001-P  DSAI130

ABB 57120001-PC DSXW110

ABB 57120001-PS  DSAI133

ABB 57160001-AAA DSDI110A

ABB 57160001-AAK DSTDW150

ABB 57160001-ABD DSTD108 8.12

ABB 57160001-ACA DSDI120A

ABB PPC322BE01

ABB 1SAJ510004R0002

ABB 57160001-ADK

ABB 57160001-ADK DSTX170

ABB 57160001-GF

ABB 57160001-K DSDO110

ABB 57160001-NF DSDO115 

ABB 57160001-NV dsdi115

ABB 57160001-SH DSTD306

ABB 57160001-TZ DSTD 110A

ABB 57160001-UH DSTD150A

ABB 57160001-YX DSTDW130

ABB 57160001-ZL

ABB 57170001-A dsxs001

ABB 57310001-CX/2 DSPC155

ABB 57310001-FH DSCS130

ABB 57310001-HG dspu120

ABB 57310001-KD Dsbc172

ABB 57310256-EL  DSBB172A

ABB 57310256-A DSBB175

ABB 57310256-ER DSBB175

ABB 57330001-N/4  DSMC110

ABB 57340001-T DSPB120

ABB 57360001-A DSMB110

ABB 57360001-EL DSMB144

ABB 57360001-HX DSMB176

ABB 5736045-N DSMD113

ABB 57520001-BZ DSCS116

ABB 57520001-U/3

ABB 5760293-7B PMC85-CL

ABB 5760380-1B

ABB 57619783E NINT-46

ABB 57619791D NBUB-61C

ABB 5SHX2645L0004 RC-IGCT

ABB 5SHX2645L0004 3BHL000389P0104

ABB 5SHY3545L0003 5SHY3545L0003

ABB 5SHY3545L0010 3BHB013088R0001

ABB ACN634 NDCU-22C 64009125A

ABB ACS401001632

ABB ACS401-6005-3-2

ABB NIOC-02C

ABB ACS355-03E-07A3-4

ABB AE6003B

ABB AF185-30

ABB AF300-30

ABB AFIN-01C

ABB AFPS01C

ABB AFPS-01C

ABB AFPS-11C 3AFE68969972

ABB AGBB-01C

 Other best-selling products：