KURODA RCS2413-01-D24L-Z Retrofit-Ready Solenoid Valve for FONTAL Control Systems
The KURODA RCS2413-01-D24L-Z is a direct-acting solenoid valve engineered for seamless integration into FONTAL series pneumatic control systems. As legacy automation lines reach end-of-service milestones, this valve serves as a verified drop-in replacement for discontinued FONTAL manifold assemblies, enabling plant engineers to restore full pneumatic control without redesigning existing control cabinet layouts or rewriting PLC ladder logic.
Rated at DC24V with an R1/8 port thread and equipped with an LED indicator for real-time coil status monitoring, the RCS2413-01-D24L-Z is designed to minimize commissioning time during scheduled maintenance windows or emergency breakdowns. Its compact body profile is compatible with standard DIN rail-mounted valve islands commonly found in FONTAL-series control panels, and the coil connector follows the standard EN 175301-803 Form A pinout — eliminating the need for rewiring when replacing older FONTAL RCS-series valves.
Upgrade Compatibility Table
| Parameter | RCS2413-01-D24L-Z | Retrofit Notes |
|---|---|---|
| Voltage | DC 24V | Matches standard PLC output card voltage; no transformer required |
| Port Size | R1/8 (PT1/8) | Direct thread match to FONTAL manifold body; no adapter needed |
| Indicator | LED | Visible coil energization status; aids field diagnostics |
| Coil Connector | EN 175301-803 Form A | Compatible with existing FONTAL wiring harness |
| Mounting | Sub-base / manifold | Fits standard FONTAL valve island sub-base without modification |
| Communication | Hardwired discrete I/O | Compatible with existing PLC digital output modules |
| Replacement Path | FONTAL RCS-series legacy valves | Verified dimensional and electrical equivalence |
| Warranty | 12 Months | Covers coil, body, and seal assembly from date of shipment |
Retrofit Planning for Existing Automation Systems
Successful integration of the RCS2413-01-D24L-Z into an existing FONTAL control system requires a structured pre-installation review. Before removing the legacy valve, engineers should document the current terminal wiring using the original control cabinet schematic, noting the PLC output card address assigned to the valve coil. In most FONTAL installations, the solenoid output is mapped to a Mitsubishi Q-series or FX-series digital output module — confirm the output card’s 24VDC sink/source configuration matches the new valve’s coil polarity.
For systems using a FONTAL valve manifold with integrated fieldbus communication — such as a DeviceNet or CC-Link valve terminal — verify that the manifold’s station address and I/O mapping remain unchanged after the valve body swap. The RCS2413-01-D24L-Z occupies the same manifold slot position as its predecessor, so no changes to the GX Works2 or GX Developer I/O parameter table should be required. However, if the control system includes a Mitsubishi GOT2000 HMI with valve status monitoring screens, confirm that the bit device address linked to the solenoid output tag still resolves correctly after the replacement.
In control cabinets where the FONTAL valve island is powered through a Mitsubishi Q61P or Q62P power supply module, verify that the total coil load after replacement does not exceed the power supply’s rated output current. If the cabinet also houses a Mitsubishi QJ71C24N serial communication module for remote diagnostics, ensure the communication link to the SCADA host remains active during the valve swap to avoid triggering a communication timeout alarm.
For systems with pneumatic I/O expansion using a FONTAL multi-station manifold, the RCS2413-01-D24L-Z can be installed on any station without affecting adjacent valve operation. If the manifold includes an integrated pressure sensor port, retain the existing Mitsubishi FX3U-4AD analog input wiring to the pressure transducer — this signal is independent of the solenoid valve replacement and does not require recalibration.
Where the legacy FONTAL valve was connected via a discrete terminal block rather than a manifold, use the existing 24VDC wiring directly. The RCS2413-01-D24L-Z’s coil resistance is within the standard range for FONTAL-compatible valves, so no changes to the PLC output card’s load current settings are needed. After installation, perform a forced output test from the GX Works2 online monitor to confirm coil energization before returning the line to automatic mode.
Downtime Control During System Migration
Minimizing production downtime during a solenoid valve replacement requires preparation before the maintenance window begins. The recommended approach is to pre-stage the RCS2413-01-D24L-Z alongside the control cabinet, with the coil connector pre-wired to a labeled terminal strip that mirrors the existing FONTAL wiring layout. This allows the physical swap to be completed in under 15 minutes without referencing the original schematic under time pressure.
Before isolating the pneumatic supply, upload the current PLC program from the Mitsubishi CPU module to a laptop running GX Works2 and save a timestamped backup. This protects the existing ladder logic, including any FONTAL-specific valve sequencing routines, against accidental overwrite during the maintenance procedure. If the system uses a Mitsubishi Q03UDECPU with memory card backup, verify that the program backup on the SD card is current before proceeding.
After the valve is installed and the pneumatic supply is restored, perform a controlled step-through of the affected machine sequence in manual mode before enabling automatic cycle. Monitor the GOT2000 HMI alarm screen for any unexpected fault codes related to the solenoid output or downstream pressure sensors. Once the sequence completes without fault, log the replacement in the maintenance record and return the line to production. The 12-month warranty on the RCS2413-01-D24L-Z covers any coil or seal failure identified during this commissioning period.
Retrofit Support FAQ
Q: Is the RCS2413-01-D24L-Z a direct replacement for discontinued FONTAL RCS-series solenoid valves?
A: Yes. The RCS2413-01-D24L-Z is dimensionally and electrically equivalent to the FONTAL RCS-series valves it replaces. The R1/8 port thread, EN 175301-803 Form A coil connector, and sub-base mounting pattern are identical, allowing direct substitution without modifying the manifold body or control cabinet wiring.
Q: What commissioning steps are required after installation?
A: After mechanical installation and wiring connection, perform a forced output test from the PLC programming software to confirm coil energization. Verify the LED indicator illuminates when the output is active. Then run the affected machine sequence in manual mode to confirm correct valve actuation before returning to automatic operation.
Q: Does the replacement affect the existing PLC program or HMI configuration?
A: No program changes are required. The RCS2413-01-D24L-Z maps to the same PLC output address as the original valve. HMI bit device tags linked to the solenoid output remain valid. No modifications to GX Works2 parameter tables or GOT2000 screen tag assignments are needed.
Q: What does the 12-month warranty cover, and how is it claimed?
A: The 12-month warranty covers manufacturing defects in the coil assembly, valve body, and internal seals from the date of shipment. To claim warranty service, contact our sales team with the order reference and a description of the fault. We will arrange priority replacement shipment to minimize your production downtime.
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