Parker Kuroda PCS245-NB-D24 Compact Solenoid Valve (24VDC, NC, 1/4" / 1/8")

Parker / Kuroda · PCS Series · 5/2 Single Solenoid · Spot Stock 1PC

The PCS245-NB-D24 is a compact 5-port, 2-position (5/2) single-solenoid directional control valve from the Parker (formerly Kuroda Precision Industries, now part of Parker Hannifin) PCS series. With a 24 VDC coil, normally-closed (NC) monostable function, and 1/4" or 1/8" porting, the PCS245-NB-D24 is engineered into machine builders' standard pneumatic manifolds worldwide. It is typically wired to the digital outputs of Allen-Bradley CompactLogix, Siemens SIMATIC, Mitsubishi MELSEC, and other PLC families inside the nine-brand automation matrix we cover.

Key Technical Specifications

The PCS245-NB-D24 is the 24 VDC, normally-closed variant of the PCS245 body. "PCS" stands for Parker Compact Solenoid — a stackable, manifold-friendly platform descended from Kuroda Precision's Japanese pneumatic-valve line. Decode the suffix at a glance: PCS-245 = 5/2 single-solenoid monostable, NB = NC function, D24 = 24 VDC coil.

Application Scenarios — Where It Fits

A 5/2 single-solenoid, normally-closed valve is the workhorse of directional pneumatic control — energy off, the spring returns the spool to the fail-safe position. That makes the PCS245-NB-D24 the default pick wherever a downstream actuator (single-acting cylinder, diaphragm, or piloted double-acting cylinder via a second valve) must default to a known state on power loss. Typical deployments in factory automation include:

• Packaging lines — boxing, cartoning, and labeling stations driving pneumatic pushers, clamps, and gates. Pair with Allen-Bradley CompactLogix for recipe-driven changeovers.
• Automotive body-in-white & assembly cells — fixture clamps, weld-cell shutters, and safety gates driven by Siemens SIMATIC S7-1500 or Mitsubishi MELSEC iQ-R safety output modules.
• Semiconductor front-end equipment — wafer-handling end-effectors, load-lock vent valves, and vacuum-pilot signals. Often coordinated with Omron NX/NJ safety controllers and KEYENCE vision inspections.
• Machine tool coolant & chip control — coolant-door actuation, chip-conveyor blow-off, and tool-changer door interlock inside Fanuc CNC cells and Yaskawa Σ-V robot cells.
• Food & beverage bottling and conveying — bottle-gripper actuation, fill-valve pilots, and air-blast reject stations sequenced by Schneider Modicon M340 / M580 PLCs.
• Material handling, conveyors & sortation — pneumatic diverter arms and pick-and-place end-effectors on Panasonic FP-X or FP7 controllers, plus zero-pressure-accumulation conveyor logic.
• Robotics & end-effector tooling — gripper open/close, vacuum-cup enable, and tool-change pilots on collaborative and SCARA stations.
• General pneumatic press & forming stations — small-press piloting, marking, and test stations where spring-return is a safety requirement.

For system-level integration with the nine brands above, browse the full automation parts catalogue or jump to the AI Diagnostic Tool for cross-reference suggestions.

Integration & Wiring Notes

The PCS245-NB-D24 is designed to drop into a 24 VDC cabinet rail. The following integration notes cover the most common wiring questions from machine builders integrating the valve into a new or retrofitted line.

• Coil polarity & drive — the D24 coil is polarity-insensitive in most variants, but always confirm against the body label. Drive directly from a 24 VDC digital output (transistor / sourcing) of any of the supported PLC families, e.g. Allen-Bradley 1769-OB16, Siemens 6ES7 222, Mitsubishi QY81P, or a relay output rated for the coil inrush.
• Surge suppression — fit a flyback diode or MOV across the coil for DC variants. On long cable runs driving inductive loads from Allen-Bradley or Mitsubishi DO modules, a snubber prevents nuisance trips on the high-speed counter / interrupt inputs nearby.
• Grounding — tie the valve body and manifold to cabinet PE. Kuroda / Parker PCS-series coils do not require a dedicated shield, but keep coil wiring physically separated from VFD power cables feeding Yaskawa or Schneider Altivar drives to avoid induced noise.
• Manual override — most PCS245 models expose a non-locking manual override on the solenoid side; use it for commissioning only, never as an operational start. Latch the override back out before resuming automatic control.
• Manifold plumbing — the PCS series supports end-ported and side-ported manifold blocks for cylinder / actuator running headers. When stacking with directional-control neighbors (e.g. a 5/3 closed-center for a double-acting cylinder), verify the common supply / exhaust ports are correctly sized for the total Cv of the stack.
• Fail-safe behavior — NB / NC means the spring returns the spool to the de-energized position. Document that state in the FDS / safety matrix so the PLC fault-code lookup and HMI alarm texts match the field reality.
• Communication handshake — the valve itself is not a networked device, but the host PLC (e.g. a Siemens ET200s with PROFIsafe, or an Omron NX-Safety stack) is. When the DO is gated through a safety relay, the PCS245-NB-D24's NC behavior becomes the de-energized trip position — a useful design pattern for press / clamp circuits.

Installation & Commissioning Tips

• Upstream air preparation is mandatory — install a 5 µm filter (F), regulator (R), and lubricator (L) upstream of the manifold. The PCS series tolerates lubricated or oil-free air, but contamination is the #1 cause of sticking spools in field returns.
• Mounting orientation — the solenoid can be mounted in any attitude provided the manual override remains accessible. Avoid mounting the coil facing straight down where condensate can pool on the coil-lead entrance.
• Torque values — for 1/4" NPT ports, tighten fittings to the manufacturer-recommended torque (typically 12–14 N·m for steel). Overtightening on manifold blocks is the second most common return cause.
• Leak check & leak-down — pressurize the system to working pressure, isolate the supply, and monitor for > 1 psi / min drop across each station of the manifold. A leaking PCS245-NB-D24 typically points to debris on the seat or a damaged lip seal — replace, do not reseat in the field.
• First energize — energize the coil off-load, then apply air. Listen for a crisp shift; a slow or muffled shift suggests insufficient air pressure or a blocked exhaust. Cycle 5–10 times before going into production.
• Coil swap — the D24 coil is field-replaceable on most PCS variants. Spare coil kits are an easy item to keep on the shelf for any 24-hour production line.
• Spare-parts philosophy — keep one spare PCS245-NB-D24 per critical cell. Our real-time shipping records show that spot-stock Parker / Kuroda valves ship inside 24h of cleared RFQ.
• Disposal / EOL — Kuroda Precision became part of Parker Hannifin years ago; many of the older "Kuroda-branded" models are still in production but re-marked Parker PCS. Cross-reference the body date code when validating NOS or refurbished inventory; the KOEED sourcing team can verify date codes against current production.

Procurement, Warranty & Lead Time

• Spot stock — 1 piece available now — this is genuine, factory-sealed inventory, not a refurbished or pulled part. Quote turnaround is 24 hours on business days.
• BOM quotation — most customers send a full pneumatic + controls BOM alongside the valve. Pull together your complete parts list (Allen-Bradley, Siemens, Mitsubishi, Omron, Fanuc, Schneider, Yaskawa, Panasonic, KEYENCE modules) and we will quote the lot in one reply.
• Warranty — 12-month replacement warranty against manufacturing defect, matching our standard multi-brand spares terms. Warranty does not cover damage from contaminated air supply, incorrect voltage, or physical impact.
• Lead time — spot stock ships within 24–72 hours of cleared payment. Out-of-stock backorders typically run 2–4 weeks via the China sourcing channel with full QC inspection and traceable lot numbers.
• Worldwide shipping — DHL / FedEx / UPS for express parcels, air freight or sea freight for multi-piece orders. Export documentation (commercial invoice, packing list, COO on request) is standard.
• Pricing — KOEED runs on an RFQ model; we do not publish fixed online pricing. Send your quantity target and delivery window to Moritta@KOEED.COM and we will reply with availability + best-fit pricing within 24 hours.
• Authenticity & traceability — every Parker / Kuroda valve ships with batch and date code. We do not market valves as "authorized" or "OEM-direct"; we are an independent multi-brand industrial sourcing specialist and we stand behind every line item we ship.

Need help building the pneumatic + controls BOM around this valve? The Create a Quote form lets you paste a multi-line instruments list and request a single combined quotation, or email Moritta@KOEED.COM directly.

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