LSI-Robway RCI-1550 HRT, Instruction Manual, Page: 22 / 126

Page 19 of 72
5.3.2 Audible Alarm Disabled LED
Illuminated when the in cabin alarm has been cancelled. This occurs when the operator
presses the ACK soft menu button to acknowledge an error. Acknowledging an error
effectively cancels the alarm for that error for a period of time. The amount of time the error
will remain acknowledged is determined by the setting for this option. If the Acknowledge
Timeout value is set to zero the error will not re-sound unless a new error occurs or the same
error re-occurs.
5.3.3 A.T.B. Indicator (anti-two-block or over-hoist)
The RCI-1550 can be supplied with an Anti-Two-Block sensor to prevent two-blocking of the
main and aux winches. When the A.T.B. indicator on the front panel is lit, a two-blocking
condition has occurred and further hoisting may be stopped by activation of the ATB motion
cut relay if installed. An audible alarm also sounds a warning. If the Anti-Two-Block system
is not required for the given application the two wires normally connected to the two-block
sensor/s, should be connected together to avoid erroneous activation of motion cut
(refer to
the drawing section of this manual).
If in Over-ride OR Rigging mode.
During some operations (such as Over-Ride and rigging modes) the ATB LED will flash.
This indicates that the ATB circuit has been over-ridden and the RCI unit can not actually
sense the state of the ATB condition.
5.3.4 Approach to Rated Capacity LED
This is illuminated when 85% of rated capacity is exceeded. This corresponds to the bar graph
being in the amber region.
5.3.5 100% Capacity Exceeded LED
This is illuminated when 100% rated capacity has been exceeded. This corresponds to the bar
graph being in the red region.
5.3.6 Motion Cut LED
This illuminated when the RCI-1550 has activated the motion cut outputs and is preventing
the crane from moving into a more hazardous state.
File : 1550-Telescopic-HRT.DOC
Issue Date: - 01/08/05