User manual GII Anti-Collision System
GIIMAN_US_CA_000_2021-06-15.docx © Gigasense AB Page 7 / 42
• If this equipment is used in a manner not specified in this manual, or by Gigasense AB
personnel, protection or function normally provided by this equipment may be
reduced.
• The analogue 4-20 mA output must not be used for decisions such as braking and
stopping the crane. The analogue output is only intended for indication such as
distance display via a remote display.
SPECIFICATIONS
• Type designation: GII.
• Alarm limits' distance: 2
- 40m, the maximum working range varies for different
frequencies from 25m to 50m due to restricted output power (EIRP, see appendix 1.
• Accuracy of limits: +/- 1m. To achieve 1 m accuracy for different speeds, the function
SPD (Speed compensation) can be necessary to use.
• Sample frequency of the SFCW radar measurement: 128 ms.
• Speed range: 0.05 - 5 m/s relative speed between the cranes.
• Speed dependence: The alarm limits can be compensated (20 - 1500%) according to
different speeds. Minimum value is 10%.
• Relay outputs: 3 switching potential free relay contacts (max. load 250VAC / 8 A).
The Relay outputs are used for braking and stopping the crane movement and
correspond to the alarm limits, Limit 1 and Limit 2. The third
relay output is used for
the failure alarm.
• The Limit 1 output relay can be given a pulsing function suitable for a warning lamp.
• Analogue output 4-20 mA: for example, a remote display, corresponding to the
distance between the units. 4 mA = 2 m and 20 mA = 40 m (maximum range, see
appendix 1). Normal load 250 Ohms. The output must not be used for decisions.
• Supply Voltage complete system: 24 VDC.
• Supply Voltage antenna box (should be powered via relay unit): 12 VDC.
• Supply Voltage Transponder unit: 12 VDC.
• Power consumption Antenna/Transponder unit: 200 mA.
• Power consumption Relay box: 100mA.
• Permitted ambient temperature: -25 ... +70 °C.
• Degree of protection: IP66/67 (Relay unit), IP56 (Antenna unit).
• Relative humidity: 10 to 80% (no condensation).
• Max. altitude: 2000 m.
• Transmitter frequency: 9.9 ... 10.6 GHz, see appendix 1.
• Radiated power defined as EIRP, see appendix 1.
• SFCW (Stepped Frequency Continuous Wave), see appendix 1.
• Dimension’s antenna (H x W x D) 443 x 359 x 294 mm & weight 4.0 kg.
• Relay box (H x W x D) 175 x 125 x 75 mm 0.8 kg.
• GROSS WEIGHT/DIMENSION: 1 system incl. packing (Unit A + Unit B) =
12.5 kg / 370 x 370 x 330 mm.
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