LAZER LHZ Series Modules: LHZ004

Technical Dossier

Product Details And Specifications

LAZER Safe LHZ Series: Comprehensive Module Range and Technical Overview

The LAZER Safe LHZ Series represents the core safety controller platform deployed across press brake and laser cutting installations in heavy industrial environments including automotive stamping plants, metal fabrication facilities, and precision sheet-metal operations. Developed in Australia, the LHZ architecture is engineered to comply with IEC 61496 and ISO 13849 safety standards, making it a reference-grade solution for machine guarding on Trumpf, Amada, Bystronic, and Durma press brake systems. The series has accumulated significant installed base across Asia-Pacific, Europe, and North America, with units still in active service on machines manufactured from the early 2000s onward. Long production runs and broad OEM adoption mean that spare parts demand for the LHZ range remains consistent even as newer controller generations enter the market.

The Evolution of LHZ Series Architecture

The LHZ platform was introduced by LAZER Safe as a dedicated optoelectronic safety controller designed to interface directly with the muting and blanking logic required on press brake light curtain systems. Early-generation units such as the LHZ001 and LHZ002 used discrete relay output logic and required external safety relays for Category 4 compliance. The mid-generation transition introduced solid-state OSSD (Output Signal Switching Device) outputs, reducing external wiring complexity and improving diagnostic response time. The LHZ004 represents the mature iteration of this architecture, incorporating dual-channel monitoring, self-checking circuitry, and direct compatibility with LAZER Safe's IRIS and PEMS sensor heads used on Trumpf TruBend and similar platforms. Compatibility across generations is limited: LHZ001/002 units use a proprietary 15-pin sensor interface, while LHZ003 and LHZ004 adopt a standardized M12 connector scheme. Retrofitting older machines with LHZ004 units typically requires a wiring harness adapter. As of 2024, the LHZ Series has entered the mature/end-of-active-production phase; LAZER Safe has transitioned its current product line to the IRIS Touch and PSC platform. This makes long-term maintenance sourcing for LHZ units a critical operational concern for facilities running legacy press brake fleets.

LHZ Series Full Catalog & Functionalities (SKU List)

The following SKUs represent the documented LHZ Series module range. Units are classified by primary function:

Safety Controllers (Main Units)

• LHZ001: First-generation relay-output safety controller, Category 2 compliance, 15-pin sensor port.
• LHZ002: Dual-relay output controller with manual reset, Category 3 rated, legacy Trumpf interface.
• LHZ003: Solid-state OSSD output controller, M12 sensor connector, improved self-test cycle.
• LHZ004: Current mature-generation controller, dual-channel OSSD, muting/blanking logic, Trumpf TruBend compatible.
• LHZ004-T: LHZ004 variant with integrated Trumpf-specific communication protocol support.
• LHZ004-A: LHZ004 variant configured for Amada press brake interface wiring.
• LHZ005: Extended I/O variant with additional diagnostic output channels for multi-zone installations.

Sensor Interface & Expansion Modules

• LHZ-SIM: Sensor interface module, bridges legacy 15-pin sensor heads to LHZ003/004 M12 input.
• LHZ-EXP: I/O expansion card, adds 4 additional monitored safety inputs to base LHZ controller.
• LHZ-COM: Serial communication adapter, enables RS-232/RS-485 diagnostic data output to external HMI.
• LHZ-USB: USB configuration interface dongle for parameter programming on LHZ003/004 units.

Power Supply & Ancillary Units

• LHZ-PSU24: Dedicated 24 VDC DIN-rail power supply module, rated for LHZ controller auxiliary circuits.
• LHZ-PSU48: 48 VDC variant power supply for installations with elevated sensor bus voltage requirements.
• LHZ-RLY: External safety relay output module, used with LHZ001/002 for Category 4 upgrade compliance.
• LHZ-MTG: DIN-rail mounting bracket and terminal block assembly kit for LHZ series panel installation.
• LHZ-CBL2M: 2-meter M12 sensor cable assembly, pre-wired for LAZER Safe IRIS/PEMS sensor heads.
• LHZ-CBL5M: 5-meter M12 sensor cable assembly, extended reach for large press brake installations.

Sourcing Hard-to-Find & Obsolete LHZ Series Parts

With the LHZ Series in end-of-active-production status, OEM availability for units such as the LHZ001, LHZ002, and LHZ-SIM has been discontinued through standard distribution channels. DriveKNMS maintains a dedicated inventory of tested surplus and refurbished LHZ Series units sourced from decommissioned press brake lines and controlled factory closeouts. All units are inspected against original LAZER Safe functional specifications prior to listing. For facilities operating Trumpf TruBend, Amada HFE, or Bystronic Xpert machines with installed LHZ controllers, DriveKNMS provides direct replacement units with documented test records, reducing machine downtime during unplanned safety controller failures. Cross-reference support is available for customers needing to identify the correct LHZ variant for their specific machine serial number range. Emergency same-day quotation is available via email for critical production line requirements.

Quality Control for the LHZ Series Range

LHZ Series controllers incorporate dual-channel safety logic and continuous self-monitoring circuitry that requires function-specific test procedures beyond standard power-on verification. DriveKNMS applies the following protocol to all LHZ units processed through its facility: (1) Visual inspection of PCB for capacitor degradation, relay contact wear, and connector pin corrosion — common failure modes on units with 10+ years of service. (2) Dual-channel OSSD output verification using a calibrated load simulator to confirm switching symmetry within IEC 61496 timing tolerances. (3) Muting and blanking logic functional test using a LAZER Safe-compatible sensor signal emulator to validate all operating modes. (4) Self-test cycle verification: the controller's internal diagnostic routine is triggered and monitored for correct fault-state response. (5) Final burn-in under rated load for a minimum of 4 hours prior to shipment. Units that do not pass all five stages are quarantined and not offered for sale.

For LHZ004 and full LHZ Series availability, pricing, and cross-reference support:

• Email: [email protected]
• WhatsApp: +86 18359293191
• Web: driveknms.com