TOSHIBA PS693 – Compact Power Supply Module for Toshiba PLC Racks

The TOSHIBA PS693 is a dedicated power supply module designed to feed Toshiba PLC base units and their I/O backplanes with stable, regulated DC power. From my experience, this unit is favored in DC-fed control panels where a clean 24 VDC source is already present, helping simplify panel wiring and reduce transformer count. You might notice that swapping to PS693 is straightforward when upgrading legacy panels to DC bus architectures—it typically drops in without touching your I/O wiring.

Our Order Process and Guarantees

• Warranty: 365 days
• Delivery: 1 week if in stock; no more than 1 month at the latest
• Payment: 50% advance payment; full payment before delivery
• Express options: FedEx, UPS, DHL

Key Features

• Stable backplane power – Provides regulated DC for the PLC CPU and I/O modules on the base unit for dependable runtime.
• DC-fed panel friendly – In many cases, PS693 is the 24 VDC input variant in the series, ideal for facilities standardizing on DC power buses.
• Protective design – Typically includes overcurrent and overvoltage protection to safeguard the rack electronics.
• Service indicators – Front status LED(s) to quickly confirm power-good and simplify troubleshooting.
• Quick replacement – Plug-in module on the PLC base; no re-termination of field I/O when replacing the power section.
• Industrial environment ready – Designed for cabinet installation with the usual PLC ambient range used in factory automation.

Technical Specifications

Note: Electrical ratings and environmental limits can vary by series revision. For critical design work, verify against the model’s nameplate and official datasheet.

Related or Supporting Products

• TOSHIBA PS691 – Typically the 100–120 VAC input power supply for the same PLC family; suited to North American mains.
• TOSHIBA PS692 – Typically the 200–240 VAC input power supply; ideal for EMEA/Asia mains or step‑down transformer panels.
• Compatible PLC base units & CPUs (same series) – Share your base rack code and CPU model to confirm fit; we can match backplane current capacity and load budget.
• Digital/Analog I/O modules – Standard DI/DO and AI/AO modules used on the same rack; ensure total backplane current stays within PS693 limits.

A packaging OEM we support migrated from mixed AC/DC supplies to a 24 VDC bus. They switched to PS693 across multiple lines, which, in many cases, reduced panel heat and made spare parts stocking simpler. One thing I appreciate is how painless the swap was—no field wiring changes, just a power module change and a tidy load calculation.

Installation & Maintenance

• Cabinet environment – Install in an enclosed industrial cabinet; ambient typically 0–55 °C. Keep away from vibration, conductive dust, and corrosive gases.
• Ventilation – Provide natural airflow; leave at least 50 mm clearance above/below. Avoid mounting beside high-heat devices without spacing.
• Wiring – Use copper conductors, 60/75 °C or better. Observe polarity on the 24 VDC feed. Protect the input with a correctly sized DC fuse or breaker and connect protective earth.
• Backplane load – Sum CPU + I/O current draw; keep within PS693’s rated backplane current. Derate cautiously at higher ambient temperatures.
• Routine checks – Inspect terminal tightness and grounding. Clean dust using dry, oil‑free air. Replace aged units proactively; electrolytic capacitors in power supplies typically age out in 7–10 years of continuous service.
• Troubleshooting – If the status LED indicates fault or the PLC browns out under load, verify backplane current and supply voltage at the terminals before suspecting the CPU.

Quality & Certifications

• Typically compliant with CE and UL/cUL for industrial control equipment; RoHS alignment for most regions.
• Meets PLC hardware practices aligned with EN 61131-2 in many cases.
• Manufacturer’s conformity markings are on the product label; always confirm by the exact series revision.
• Backed by our 365-day warranty and inspected prior to dispatch.