HITACHI LPF200A Replacement Solution for L200/SJ200

Product Overview

HITACHI LPF200A Replacement Solution for L200/SJ200 Series: Smooth Transition from Legacy AC Drive Systems

When your HITACHI L200 or SJ200 series variable frequency drive begins showing EMI interference, erratic motor behavior, or filter board failure symptoms, the LPF200A low pass filter board is the precision replacement component that restores full drive performance without requiring a complete drive overhaul. Designed as a direct drop-in replacement for the original HITACHI LPF200A, this board maintains the same physical footprint, connector pinout, and electrical specifications as the factory-installed unit, enabling maintenance engineers to complete the swap during a planned shutdown window — or in many cases, an emergency maintenance cycle — with minimal disruption to the production line.

The LPF200A serves as the EMI suppression stage within the L200 and SJ200 drive architecture. Its primary function is to attenuate high-frequency switching noise generated by the IGBT inverter stage, protecting both the motor winding insulation and upstream power quality. In aging installations where the original filter board has degraded due to thermal cycling, capacitor aging, or transient overvoltage events, replacing the LPF200A restores the drive’s compliance with conducted emission standards and eliminates interference that can corrupt encoder feedback signals or disrupt nearby PLC I/O modules on the same panel bus.

Compatibility Comparison Table

Seamless Upgrade Solutions

A filter board replacement rarely occurs in isolation. In most L200 and SJ200 retrofit projects, the LPF200A swap is part of a broader drive maintenance or system modernization effort. Engineers sourcing the LPF200A from TOPNLMS frequently pair it with the HITACHI L200 main control board when the drive has experienced a combined logic and EMI fault, or with the SJ200 power board when the root cause investigation reveals concurrent damage to the rectifier or DC bus stage. In multi-drive panel installations, it is common to replace the LPF200A across all drives in the cabinet simultaneously to normalize EMI performance and avoid staggered failures.

For sites migrating from older HITACHI WJ200 or NE-S1 series drives to the SJ200 platform, the LPF200A is a required component in the new drive build-out. These migration projects typically also involve sourcing SJ200 I/O expansion modules to replicate the analog and digital I/O point count of the legacy drive, along with HITACHI OPC-G1-PRT or OPC-G1-DEV communication option cards to maintain PROFIBUS or DeviceNet connectivity with the existing plant DCS or SCADA system. Where the original drive communicated via RS-485 Modbus RTU to a HITACHI EH-150 or EH-A series PLC, the replacement SJ200 drive with LPF200A installed continues to support the same Modbus register map, eliminating the need for PLC program modifications.

Panel builders and system integrators working on control cabinet retrofits also commonly source HITACHI SJ-DN DeviceNet interface modules, STO (Safe Torque Off) wiring terminal blocks, and 24VDC control power supplies alongside the LPF200A to complete a full drive bay refurbishment. In applications where the motor cable run exceeds 20 meters, adding an output reactor or dV/dt filter in series with the drive output — in addition to the LPF200A on the input side — provides comprehensive EMI management across the full drive-motor circuit. TOPNLMS maintains stock of LPF200A boards specifically to support these multi-component retrofit orders, enabling consolidated shipment and reducing procurement lead time.

Retrofit Guidance FAQ

Q: Do I need to reprogram the L200 or SJ200 drive after replacing the LPF200A?
A: No. The LPF200A is a passive filter board with no programmable parameters. All drive settings, acceleration/deceleration ramps, frequency limits, and I/O assignments stored in the drive’s EEPROM are fully retained after the board swap. No parameter backup or restore procedure is required.

Q: Is the wiring to the LPF200A the same as the original board?
A: Yes. The replacement LPF200A uses the same OEM connector pinout and internal harness routing as the factory-installed unit. No rewiring of the drive’s internal harness is required. Technicians should follow standard ESD precautions and ensure the drive is fully de-energized and DC bus discharged before handling the board.

Q: Will replacing the LPF200A resolve Modbus RTU or RS-485 communication errors on my SJ200?
A: EMI-induced communication errors on the RS-485 bus are a known symptom of LPF200A degradation. In many cases, replacing the filter board eliminates the noise source and restores stable Modbus RTU communication without any changes to the communication option card or PLC program. If errors persist after replacement, inspect the RS-485 cable shielding and termination resistor.

Q: Can the LPF200A be used in both single-phase and three-phase L200 variants?
A: The LPF200A is compatible across the L200 series range. Confirm your specific drive model number against the HITACHI L200 series compatibility matrix. TOPNLMS technical support can verify compatibility for your exact drive model prior to order.

Q: What is the physical installation space requirement?
A: The replacement LPF200A matches the original board dimensions exactly. No control cabinet modifications, DIN rail adjustments, or cable management changes are required. The board mounts to the same internal chassis standoffs as the original unit.

Q: Is this board suitable for use in high-ambient-temperature environments?
A: The LPF200A is rated for the same operating temperature range as the L200/SJ200 drive chassis. For installations in high-temperature enclosures or tropical climates, ensure the drive cabinet ventilation meets HITACHI’s specified airflow requirements to protect all internal components including the filter board.

Warranty Assurance

Every HITACHI LPF200A filter board shipped by TOPNLMS is covered by a 12-month warranty from the date of delivery. Prior to shipment, each unit undergoes functional inspection including visual examination for component damage, connector integrity verification, and cross-reference against the original HITACHI part specification. Units that do not pass inspection are not shipped.

In the event of a warranty claim, TOPNLMS provides replacement support with priority processing for customers experiencing production downtime. Our after-sales response target is within 1 business day for warranty inquiries submitted via email. Replacement units are dispatched from our Xiamen warehouse, with express international shipping available to minimize site downtime.

TOPNLMS maintains dedicated stock of high-demand HITACHI L200 and SJ200 series components — including the LPF200A — to support urgent procurement requirements. Orders placed before 3:00 PM CST on business days are processed for same-day dispatch. We issue a proforma invoice, packing list, and shipment tracking number for every order to support your procurement documentation requirements.

For volume orders, OEM procurement programs, or technical pre-sales consultation on L200/SJ200 retrofit compatibility, contact our industrial automation team directly.