Description
TOYO DENKI TD1PS-74RZ4 – Power/Regenerative Supply for TD1 400 V‑class Drive Systems
The TOYO DENKI TD1PS-74RZ4 is part of the TD1 power supply family, designed to feed and stabilize the DC link of TOYO DENKI TD1 AC drive/servo systems in the 400 V class. From my experience, this type of module is typically used where you need reliable DC bus power with controlled energy handling during deceleration, helping the drive system return or dissipate braking energy and protect against overvoltage trips. It seems to be a popular pick for multi-axis cabinets where you want cleaner wiring and easier maintenance.
Order Placement Process and Guarantees
- Warranty period: 365 days
- Delivery time: 1 week if in stock; no more than one month at the latest
- Payment terms: 50% advance payment; full payment before delivery
- Express options: FedEx, UPS, DHL
Key Features
- 400 V-class DC bus supply – Feeds the TD1 drive DC link for stable operation under varying loads.
- Regenerative energy handling – In many cases, returns or dissipates braking energy to reduce overvoltage trips on rapid decel.
- Protection built in – Overvoltage, overcurrent, and thermal safeguards to protect both the module and connected drives.
- Clean panel integration – Panel-mount layout with straightforward power terminals; easy to route inside standard cabinets.
- Service-friendly design – You might notice quick-access terminal covers and status indication for faster troubleshooting.
- Works in multi-axis cabinets – Typically supports shared DC bus arrangements for compact lines and gantries.
Technical Specifications
| Item | Specification |
|---|---|
| Brand / Model | TOYO DENKI / TD1PS-74RZ4 |
| HS Code | 8504.40 (Static converters, e.g., drive power supplies/regenerative units) |
| Power Requirements | 3‑phase AC, 380–480 V, 50/60 Hz (400 V class; verify against nameplate) |
| Operating Temperature | 0 to +40 °C typical (higher ambient may require derating and enhanced ventilation) |
| Signal I/O Types | DC bus P/+ and N/−; braking resistor terminals (if used); status/alarm indication; dry‑contact alarm output on some variants |
| Communication Interfaces | Not typically required (integration via DC bus and discrete signals) |
| Installation Method | Panel‑mount inside enclosed cabinet; vertical orientation; IP20 open‑type construction |
| Cooling | Forced‑air (integral fan); maintain top/bottom clearance for airflow |
Related or Supporting Products
- TOYO DENKI TD1 drive modules – The TD1PS-74RZ4 is intended to power compatible TD1 inverters/servo amplifiers in the 400 V class.
- Braking resistor units – Used when you prefer local dissipation instead of (or in addition to) regeneration, helpful on short decel ramps.
- Line reactor (3‑phase, 400 V) – From my experience, adding a reactor improves input THD and protects against line transients.
- EMC/RFI filters – Typically required to meet stricter plant EMC limits.
- Family variants (capacity differs): TD1PS-37RZ4, TD1PS-55RZ4, TD1PS-90RZ4 – You might notice these cover lower/higher power ranges to match different axis loads.
Installation & Maintenance
- Cabinet environment – Install in a metal enclosure meeting typical industrial standards (e.g., IEC 61439). Keep ambient within 0–40 °C and humidity non‑condensing.
- Ventilation – Provide unobstructed airflow; allow clearance above/below the unit and avoid mixing intake air with hot exhaust from other drives.
- Wiring – Use appropriately rated copper conductors. Tighten terminals to the specified torque and ground to a low‑impedance PE bar.
- EMC practice – Route motor/brake wiring away from sensitive I/O. Use shielded cables and bond shields 360° where possible.
- Safety – Wait for the DC link to discharge fully before servicing. Verify DC bus voltage with a meter; indicator LEDs are helpful but not a substitute.
- Routine checks – Quarterly dust removal, fan inspection, and retorque of power terminals. In many cases, this alone prevents nuisance trips.
- Spare parts – Keep a spare cooling fan and a matched braking resistor (if used) on hand to minimize downtime.
Quality & Certifications
- Compliance: CE (EMC/Low Voltage) and RoHS in most cases; UL/CSA may apply depending on region and exact variant.
- Manufacturing system: Produced under ISO 9001 quality management.
- Manufacturer’s warranty: Typically 12 months for factory-new units; we support a 365‑day warranty on supplied items.
Practical note: If your application has frequent rapid deceleration or vertical axis loads, this module’s regenerative handling can reduce downtime from DC bus overvoltage trips. Several customers running packaging lines have mentioned smoother stops and fewer alarms after switching to the TD1PS configuration.
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