Hirschmann 154/06 Crane Boom Cable Reel Assembly

Overview

The Hirschmann 154/06 is a KT154 series cable reel assembly from the PAT-Hirschmann crane instrumentation range, used to transmit boom length and angle data (and, on many builds, the anti-two-block signal) from the base of a crane boom to the operator’s load moment indicator console. Despite the generic “Monitor” label sometimes applied to this part number, the 154/06 is not a display or console itself – it is the mechanical cable reel and transducer assembly mounted at the boom base that keeps the sensing cable tensioned and transmits its signal as the boom telescopes in and out, feeding data to a separate Hirschmann console display such as the DS350 or Mentor system.

Seven Star LLC supplies the Hirschmann 154/06 cable reel assembly as part of its crane and lifting-equipment instrumentation support for operators across Oman and the GCC, working alongside PAT-Hirschmann (a Belden brand) safe load indicator systems fitted to mobile and truck-mounted cranes. Because cable reels in the KT154 family are configured against specific cable lengths, telescoping travel, and connector types, our team can help confirm the correct 154/06 configuration against your crane’s existing reel or console before ordering a replacement.

Measurement and Operating Principle

Inside the 154/06 cable reel housing, a spring-loaded reeling drum keeps the sensing cable under constant tension as the crane boom extends and retracts. The drum drives a potentiometer that acts as the length transducer: as the boom telescopes and cable pays out or retracts, the potentiometer’s resistance changes proportionally, and this signal is relayed back to the crane’s load moment indicator console as a measure of current boom length. Where the 154/06 configuration includes an integrated angle sensor, a small oil-filled pendulum-driven potentiometer measures boom angle independently of the length signal.

The reel assembly also typically carries the anti-two-block (A2B) circuit, a safety interlock that alerts the operator if the hook block approaches too close to the boom tip. Because the length cable itself forms part of this A2B circuit path in many PAT-Hirschmann configurations, the mechanical integrity of the cable reel directly affects both load-chart accuracy and this critical overload/collision safety function, making the 154/06 a safety-relevant component rather than a purely cosmetic display accessory.

Engineering Design

The Hirschmann 154/06 reel housing is a corrosion-resistant, weatherproof enclosure designed for continuous outdoor mounting at the crane boom base, where it is exposed to dust, moisture, and mechanical vibration through the life of the machine. The reeling drum and slip-ring assembly are engineered for repeated extend/retract cycling without signal degradation, and the cable itself is a shielded two-conductor design carrying both the length signal and, where fitted, the A2B safety circuit.

As part of the broader PAT-Hirschmann (WIKA Mobile Control) crane instrumentation ecosystem, the 154/06 is designed to interface directly with Hirschmann load moment indicator consoles – including the DS350, Mentor, and related LMI platforms – without requiring signal conditioning hardware between the reel and the console. Field maintenance procedures include periodic cable tension resets (turning the drum several turns counter-clockwise to preload the spring) and potentiometer end-stop calibration to keep length and angle readings accurate on the operator’s display.

Hirschmann 154/06 Key Features

• Hirschmann 154/06 cable reel transmits boom length (and often angle and A2B) data to the crane’s load moment indicator
• Spring-loaded reeling drum maintains constant cable tension through boom telescoping cycles
• Potentiometer-based length transducer provides continuous analog feedback to the LMI console
• Corrosion-resistant, weatherproof housing rated for continuous outdoor boom-base mounting
• Compatible with PAT-Hirschmann DS350, Mentor, and related load moment indicator consoles
• Often integrates the anti-two-block safety circuit alongside the length signal
• Direct-fit replacement for existing KT154 series cable reels without additional signal conditioning
• Field-serviceable with standard cable tension and potentiometer calibration procedures

Signal Behaviour, Calibration, and Fault Diagnosis

Within the PAT-Hirschmann LWG family to which the Hirschmann 154/06 belongs, the length potentiometer is gear-driven from the cable drum and covers roughly ten turns across full telescoping travel, producing a rising analogue voltage from close to zero at the fully retracted position up to just under the sensor supply rail at full extension. The angle channel, where fitted, uses a weighted pendulum that is oil-damped to suppress the swing induced by boom motion and machine vibration, driving a separate potentiometer whose output falls as the boom is raised. The anti-two-block circuit is routed through the same reel cable and slip-ring assembly and is supervised by a resistor in series with the switch contact, which allows the console to distinguish a healthy circuit from an open cable or an actual two-block condition rather than simply reading a switch as open or closed.

Commissioning a replacement reel follows a fixed sequence: the drum spring is pre-loaded by turning the drum against its natural direction, typically five to eight turns, before the cable is anchored at the boom tip, then the length channel is zeroed with the boom fully retracted and verified against a measured value at full extension. The angle channel is checked against a calibrated inclinometer at several points through the working arc. On Hirschmann consoles in this family, a length or angle channel that reads outside its permitted window, or a reel with an internal wiring or sensor fault, is reported as a numbered system error rather than a silent inaccuracy, which is why a suspect display reading should always be traced back to the reel, its cable, and its connector before the console itself is condemned. Distributor listings commonly catalogue reels of this configuration under part number 068-154-060-001 with a two-pole cable of approximately 26 m serving around 15 m of telescoping travel; the exact cable length must be confirmed against the crane before ordering.

Industrial Applications for the Hirschmann 154/06

The Hirschmann 154/06 cable reel is used on mobile cranes, truck-mounted cranes, and boom trucks equipped with PAT-Hirschmann load moment indicator systems across construction, oilfield services, and port and marine lifting operations. It is a routine wear item, replaced when the reeling spring weakens, the potentiometer drifts out of calibration, or the cable itself becomes damaged from repeated telescoping cycles – any of which can compromise both load-chart accuracy and anti-two-block safety function.

Seven Star LLC supports crane operators and lifting equipment maintenance teams in Muscat, Sohar, Duqm, and Salalah with Hirschmann/PAT crane instrumentation components including the 154/06 cable reel, helping confirm the correct configuration against your specific console and boom telescoping range before shipment to keep safe load indicator systems in full working order.

Hirschmann 154/06 Technical Specifications

Request a Quote

Contact Seven Star LLC for pricing and availability on the Hirschmann 154/06 cable reel assembly for your crane load moment indicator system in Oman and the GCC.

Seven Star LLC keeps the Hirschmann 154/06 available for fast quoting to Oman-based crane maintenance teams needing a reliable cable reel replacement.

Related Products

• Schneider Electric Harmony XVB Signal Tower Light
• Cooper Crouse-Hinds EDS225 EDS Pushbutton Control Station
• MACROLEX SOLVENT BLUE 97-PART II 615290
• OEM RJO Industrial Speed Sensor
• Cooper Crouse-Hinds EFSC215 EFS Explosionproof Pushbutton Control Station
• Schneider Electric Harmony XB5 Plastic Pushbutton Station