Description
3. Key Technical Specifications
| Parameter | Value |
|---|---|
| Module Type | Auxiliary power supply board |
| Input Voltage | 18–32 V DC or wide AC range depending on configuration |
| Output Voltage | 24 V DC regulated |
| Output Current | Up to 10–30 A (configuration dependent) |
| Power Output | Approximately 240–1200 W |
| Dimensions | Approx. 384 x 89.5 mm (board) |
| Weight | 0.95 kg |
| Operating Temperature | -10 to +55 °C |
| Mounting | Internal to ACS800 supply unit / drive chassis |
| Compatibility | ACS800 series drives (DSU modules) |
| Diagnostics | Status indicators and fault monitoring via drive system |
4. Product Introduction
The ABB DSMB-01C 64691929 is a power supply board used in ACS800 drive systems. It supplies stable auxiliary voltages, primarily 24 V DC, to control electronics and other modules within the drive unit.
Engineers choose this board for its proven reliability in maintaining control power during main supply variations. It supports continued operation of the drive’s processor, I/O, and communication interfaces in demanding industrial applications.
- DSMB-01C
- DSMB-01C
5. Installation & Configuration Guide
Stage 1: Pre-Installation Preparation (10-15 minutes) ⚠️ Safety First: Lock out and tag out all power sources to the drive. Verify zero voltage on input and output terminals. Wait for capacitors to discharge. Tools Required: ESD wrist strap, screwdrivers, multimeter, torque wrench, camera for documentation. Data Backup: Record drive parameters, photograph internal wiring and board orientation, note any fault codes.
Stage 2: Removing the Old Module (10 minutes)
- Open the drive cabinet and remove protective covers.
- Label and disconnect all cables connected to the power supply board.
- Remove mounting screws carefully.
- Lift the board straight out, avoiding force on connectors. ⚠️ Note: Document cable positions with photos—miswiring on reassembly can damage components.
Stage 3: Installing the New Module (10-15 minutes)
- Use full ESD protection. Confirm the replacement is DSMB-01C 64691929.
- Align the new board in the correct orientation and secure with screws at specified torque.
- Reconnect all cables exactly as documented.
- Verify no loose connections or pinched wires. Self-Checklist: [ ] Board seated properly, [ ] All cables matched, [ ] Covers ready for reinstall.
Stage 4: Power-On & Testing (15-20 minutes) Pre-Power Check: Measure insulation resistance and check for shorts. Power-On Steps:
- Apply control power first if separate.
- Energize main supply and monitor drive start-up sequence.
- Check LEDs and drive display for normal operation.
- Verify 24 V DC output rails with multimeter.
- Run a no-load test followed by loaded operation. ⚠️ Troubleshooting Note: If auxiliary voltages are absent, check input fuses and ribbon cables first. Persistent faults may require drive firmware verification.
6. Frequently Asked Questions (FAQ)
Can this power supply board be replaced with the drive powered on? No. The procedure requires complete power isolation. Live work risks severe shock and equipment damage. Always follow lockout/tagout procedures.
Is DSMB-01C obsolete, and are your units new? This is a spare part for ACS800 drives that are past end-of-production for new units. Offered items are New Original surplus with full manufacturer traceability and testing. Lead times for factory new equivalents are often extended.
What is the direct replacement if unavailable? DSMB-01C is specific to certain ACS800 configurations. Consult the drive serial number and manual for exact match. Upgrading the entire drive section is sometimes required for very old systems.
Will replacing this board affect my drive parameters? No. Parameters are stored in the drive control unit. However, always upload and save parameters before any hardware work as standard practice.
Why is the price lower than OEM direct? These are genuine new surplus boards from authorized inventory channels. They undergo full functional verification in test racks. This avoids the premium of current factory production for legacy drive spares.
How do I verify compatibility with my ACS800 drive? Check the drive type code, supply unit variant (DSU), and hardware manual. The fits specific -304/704 and related supply units. Provide your drive details for confirmation if needed. Test reports and photos available upon request.
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