20 in stock
ABB 6640635A1 Symphony Harmony Termination Module
ABB 6640635A1 Symphony Harmony Termination Module
Brand/Manufacturer: ABB
Order Number: 6640635A1
Type: Termination Modules
Country of Origin: Sweden
Condition: Original Brand
Lead Time: Available in stock
Payment Term: 100% TT In Advance
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Description
The ABB 6640635A1, also cataloged as the 6640635A1 Servo Termination Unit (STU), operates as a dedicated hardware component for interfacing servo control signals between ABB Distributed Control Systems (DCS) and industrial servo actuators.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | 6640635A1 |
| Brand | ABB |
| Origin | Sweden |
| Weight | 0.5 kg |
| Dimensions | Standard Rack-Mounted Termination Board Footprint |
| Operating Temp | -25 to +60 deg C |
| Power Consumption | 2.5 W (Nominal) |
| Signal Interface | Voltage and current servo control signals |
| Channel Capacity | Typically 8-16 servo channels |
| Compatible Systems | ABB Bailey INFI 90, Symphony Harmony DCS |
| System Isolation | Full electrical isolation between servo channels and system bus |
| Mounting Format | Rack-mounted termination board |
Industrial Control & Backplane Communication Properties
As an integrated termination unit within ABB process control architectures, the 6640635A1 provides signal protection and bus interfacing:
- 4-20 mA HART Loop Protocol & Channel Isolation: Incorporates full electrical isolation across 8 to 16 servo voltage and current loops, isolating field actuator drives from backplane control logic to eliminate ground loops.
- Backplane Bus Communication Velocity: Direct connection to Symphony Harmony and INFI 90 backplane buses routes high-speed analog position commands to field actuators with sub-millisecond propagation delay.
- Firmware Flash Compatibility: Acts as a passive physical termination interface, maintaining signal alignment and hardware scaling parameters without requiring firmware updates during DCS controller upgrades.
Frequently Asked Questions
Q: Can the 6640635A1 handle both voltage and current signal formats simultaneously?
A: Yes, the unit supports termination for both voltage and current-based servo control signals across its channel inputs.
Q: What level of electrical isolation does the board provide between field drives and the DCS?
A: The STU features full electrical isolation between individual servo channels and the main DCS system bus to isolate drive-related noise.
Q: How many servo channels are available on a single termination board?
A: The board typically accommodates between 8 and 16 servo channels, depending on specific system hardware configuration.
Field Installation Guidelines
Proper physical mounting and wiring practices ensure stable servo actuator performance and noise rejection:
- Rack Mounting and Chassis Grounding: Secure the 0.5 kg termination unit into its designated cabinet rack slot. Attach a grounding jumper from the board mounting frame to the main DCS cabinet earth grounding bar.
- Field Actuator Signal Wiring: Connect voltage and current servo drive lines using twisted-pair shielded cable. Route actuator control conductors in separate cable conduits isolated from high-voltage AC power lines.
- Cable Shielding: Terminate signal wire shields at the designated chassis grounding connection on the termination board to prevent electrical interference from corrupting sensitive servo positioning loops.
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Testimonials
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We’ve worked with IndustriaX Limited on several urgent orders for automation components. Their ability to provide original, factory-sealed parts with full documentation—often from in-stock inventory—has significantly reduced our downtime. The delivery is consistently fast, and their logistics team is highly responsive. IndustriaX has become one of our most trusted global suppliers for industrial spare parts.
- Sarah Johnson
We’ve worked with IndustriaX Limited on several urgent orders for automation components. Their ability to provide original, factory-sealed parts with full documentation—often from in-stock inventory—has significantly reduced our downtime. The delivery is consistently fast, and their logistics team is highly responsive. IndustriaX has become one of our most trusted global suppliers for industrial spare parts.
- Sarah Johnson
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Finding authentic automation parts has always been a challenge, especially for discontinued models. IndustriaX Limited has impressed us with their genuine stock, clear product traceability, and prompt updates. We’ve verified their shipments against OEM specs multiple times, and the results are flawless. They’re now our preferred sourcing partner for critical systems.
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Finding authentic automation parts has always been a challenge, especially for discontinued models. IndustriaX Limited has impressed us with their genuine stock, clear product traceability, and prompt updates. We’ve verified their shipments against OEM specs multiple times, and the results are flawless. They’re now our preferred sourcing partner for critical systems.
- David Smith
Professional Service with After-Sales Support"IndustriaX Limited doesn’t just ship products—they provide solutions. When we encountered installation issues with one of the modules, their technical team replied in less than 4 hours and provided wiring guides and troubleshooting tips. This level of post-sale support is rare in the spare parts sector. Their professionalism gives us confidence in every order."
- Emily Brown
"IndustriaX Limited doesn’t just ship products—they provide solutions. When we encountered installation issues with one of the modules, their technical team replied in less than 4 hours and provided wiring guides and troubleshooting tips. This level of post-sale support is rare in the spare parts sector. Their professionalism gives us confidence in every order."
- Emily Brown
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We've tested multiple suppliers over the years, but IndustriaX Limited consistently stands out. Their product catalog is extensive, their team is knowledgeable, and they understand the urgency of industrial needs. With every order, we receive timely updates, fast delivery, and 100% genuine products. It’s rare to find such consistency and reliability in this field.
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We've tested multiple suppliers over the years, but IndustriaX Limited consistently stands out. Their product catalog is extensive, their team is knowledgeable, and they understand the urgency of industrial needs. With every order, we receive timely updates, fast delivery, and 100% genuine products. It’s rare to find such consistency and reliability in this field.
- Michael Anderson