Product Core Brief

• Model: SNAT617CHC
• Order Code: 61037136D (listed by third-party sources; verify on nameplate)
• Brand: ABB
• Series: ABB ACS600 series drive chopper control board family
• Core Function: Chopper control board for ABB ACS600 series medium/high-power drives; controls the braking chopper to manage DC bus overvoltage during motor deceleration.
• Product Type: Chopper control PCB board
• Key Specs: 24 V DC supply | Thyristor chopper triggering | Overvoltage/overcurrent protection | ACS617/ACS677 compatible | Legacy ABB component
• Condition: New Original / New Surplus (verify by full order code and revision)

Key Technical Specifications

• Part Number:
• Order Code: 61037136D (listed by third-party sources; confirm against the actual board label)
• Product Type: Chopper control board (brake chopper control PCB)
• System Role: Generates trigger pulses for thyristor choppers, regulates braking energy dissipation, and protects the DC bus from overvoltage during motor deceleration
• Compatible Drives: ABB ACS600 series medium/high-power drives (ACS617, ACS677, etc.)
• Supply Voltage: 24 V DC (system internal supply; verify against nameplate)
• Control Current Range: 100–400 A (adapts to different chopper power ratings; verify against OEM documentation)
• Max Power Consumption: 15 W (listed by third-party sources; confirm against nameplate)
• Control Functions: Thyristor chopper triggering, braking energy regulation, overvoltage protection
• Isolation: Electrical isolation between control circuit and power circuit
• Dimensions: Approximately 145 × 35 × 125 mm (W × H × D; verify against nameplate)
• Weight: Approximately 0.45 kg
• Mounting: Internal slot installation within the ABB drive cabinet
• Operating Temperature: −20 °C to +70 °C (listed by third-party sources; confirm against OEM nameplate)
• Storage Temperature: −40 °C to +85 °C (listed by third-party sources; confirm against OEM nameplate)
• Humidity: 5%–95% RH, non-condensing (listed by third-party sources; confirm against OEM nameplate)
• Protection Class: IP20 (cabinet installation)
• Lifecycle Status: Obsolete; spare parts supply only

 

Product Introduction (No Fluff)

The ABB SNAT617CHC is a chopper control board used in ACS600 series medium/high-power drives. It generates precise trigger pulses to control thyristor chopper conduction and cutoff, regulating energy dissipation through braking resistors and preventing DC bus overvoltage during motor deceleration.

Its practical value is maintaining legacy ACS600 drive installations where a failed chopper control board can cause DC bus overvoltage faults, uncontrolled braking behavior, or drive trips. For maintenance replacements, the full order code 61037136D should be matched against the existing board label, since connector layout, firmware, and chopper compatibility may differ across revisions.

QA & Testing SOP (Dynamic & Transparent)

For legacy chopper control boards, we verify mechanical integrity and basic readiness before shipping.

1. Part number verification — Confirm SNAT617CHC and order code 61037136D on the label; check for revision markings.
2. Visual inspection — Inspect connectors, traces, socketed components, and solder joints for corrosion, burn marks, or physical damage.
3. Connector and backplane check — Verify edge connectors and mating pins for bent pins, oxidation, or contamination.
4. Power rail continuity check — Confirm no short circuits between power rails and ground before energizing.
5. Functional readiness — Where test fixtures are available, verify power-up and communication with the host drive system; pack in anti-static shielding with connector protection.

 

Installation Pitfalls & Guide (Engineer to Engineer)

❗ Match 61037136D exactly. SNAT617CHC may appear with different revisions or suffixes. Substituting without verification can cause connector, firmware, or chopper compatibility mismatches.

❗ Confirm drive compatibility. This board is designed for ACS600 series drives (ACS617/ACS677). Verify the host drive model and firmware version against existing system documentation.

❗ Verify 24 V DC supply. Ensure the internal 24 V DC supply voltage and polarity match the board requirements before energizing.

❗ Check chopper resistor sizing. After replacement, confirm that the braking resistor rating matches the drive configuration to prevent overheating or inadequate braking.

❗ Back up drive parameters. Before replacement, upload and save the existing drive configuration, including chopper and braking parameters.

❗ Test braking function. After installation, verify chopper triggering, DC bus voltage behavior during deceleration, and absence of overvoltage faults under controlled conditions.

Replacement steps:

1. Back up the drive configuration and document existing board position and wiring.
2. Remove power and verify zero voltage on the DC bus before disconnecting cables.
3. Install the replacement SNAT617CHC with the same 61037136D revision.
4. Restore power, verify communication, restore parameters, and test braking function under controlled conditions.

Technical FAQ

What does the SNAT617CHC do? It is a chopper control board for ABB ACS600 series drives, controlling the braking chopper to prevent DC bus overvoltage during motor deceleration.

What is the order code? Third-party sources list 61037136D as the associated order code, but the board label should always be confirmed before ordering.

Which drives is it compatible with? It is designed for ABB ACS600 series medium/high-power drives, including ACS617 and ACS677 models.

Can I replace it with any SNAT617 board? No. The exact part number, revision, and order code should match. Different SNAT variants may have different connectors, firmware, or chopper compatibility.

Is it still available? It is considered an obsolete component with spare parts supply only. New surplus and verified replacements can be sourced, but long-term projects should evaluate migration to a supported ABB drive platform.