The CSM Crane Safety Monitor is an electronic control unit to be used in overload protection systems. The CSM evaluates and computes signals from force transducers and can be set for alarm at preset alarm limits. By installing the CSM, hazards for personnel and material are avoided. The CSM will also record the operation of the hoist. The CSM is designed both for indoor and outdoor operation in aggressive and demanding industrial environments.

CSM Safety and Economy

  • Protects personnel and property against hazards due to overload
  • Enhances safety for personnel in crane operations
  • Monitors the operational conditions of the crane as well as the recommended service intervals. Through this monitoring the crane can be fully utilized during its entire life period (Safe Working Period)
  • CSM is self-checking. All faults result in overload indication.

The CSM can monitor the following functions/operations

  • Slack Rope status
  • Load Indication (Load in Hook)
  • Load (Peak Value) * Set Switch Limits
  • Total Service Time * Overload Service Time
  • Number of Hoisting Cycles
  • Levels for Change of Hoisting Speed
  • Service Time converted into Full-Load Service Time (For computing of Safe Working Period as per ISO 12482-1, Cranes – Condition monitoring).


  • Operating Voltage:
    85-264 VAC, 47-440 Hz or 12-370 VDC.
  • Enclosure:
    Lacquered steel box, dimensions 380x300x155 mm.
  • Protection Class:
    IP65 Temperature Range: -20ºC to +70ºC.
  • Inputs:
    One to four inputs, current signal, each 4-20 mA.
  • Limit Settings:
    Limit 1: (Slack) Rope Warning
    Limit 2A: Overload Indication/Warning
    Limit 2B: Overload Warning /Cut Off
    Optional: Further limit settings. The switch limits can be set with “on-” or “off-” delay up to 5 seconds.
    Switching capacity: 6A, 250VAC. Optional: Greater switching capacity can be achieved by installing contactors.
  • Recording of Hoisting Movement:
    Two inputs per hoist.
  • Outputs:
    RS485, which can be used for e.g. PIAB Remote Display. 4-20mA, 0-10VDC.
  • Display (built in):
    LCD, 2 rows each with 16 alphanumeric characters. Height of characters is 5 mm, back lit.
  • Setting of Switch Levels/Programming:
    Simple, via 6 push buttons on panel.

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