User's Manual

GM550 v1043 FCC-IC.doc Revision 2 9
Liquid Crystal Display (LCD)
Detailed lift data and system information is displayed here. The liquid crystal display (LCD) can be
adjusted to facilitate viewing in varied lighting conditions. See Menu 3) Display Settings.
Sensor Status Lights
Detailed lift data and system information is displayed here. The liquid crystal display (LCD) can be
adjusted to facilitate viewing in varied lighting conditions.
2 Block
The red 2 Block alarm light comes on when a programmed anti-two-block switch is in alarm.
The green “M” (main) and “A” (auxiliary) anti-two-block radio status lights stay on when the
GS550 has a reliable radio communication link to all programmed anti-two-block sensors.
The radio status lights flash green when communication is intermittent or absent. The M
refers to the first anti-two-block sensor programmed in the sensor list. The A refers to all
other anti-two-block sensors programmed in the sensor list.
Load
The red Load alarm light comes on when a load sensor is in overload.
The green “M” (main) and “A” (auxiliary) load radio status green lights stay on when the
GS550 has a reliable radio communication link to all programmed sensors. The radio status
lights flash green when communication is intermittent or absent. The M refers to the first
sensor programmed in the sensor list except anti-two-block. The A refers to all other sensors
programmed in the sensor list except anti-two-block.
Low Battery
The amber light of the battery icon comes on when battery life for a sensor programmed in
the sensor list drops below 10%. Normally several weeks of battery life remains from the
moment the low battery light first comes on.
Bar Graph
The bar graph displays the gross load lifted by a load sensor as a proportion of the maximum
load allowed, expressed in 10% increments. Maximum load is the lowest of the operator set
maximum load limit and the working load limit (WLL) as calculated from the rated capacity
charts*. When there are two or more load sensors programmed in the sensor list the bar
graph will indicate the load for the sensor closest to its maximum allowable.
Infrared Port
The infrared port is used to download data from the data logger or to upload firmware updates and
capacity charts using a GT103 portable download tool or other compatible device.
*
WLL is indicated by rated capacity indicators only.