UTM-00339 | Rev 19
Page 238 of 253
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Troubleshooting / Remedial Action
This error occurs when communication to the last detonator is
unsuccessful after charging and just prior to firing. If the last
detonator is not found it indicates a harness break or the last
detonator does not have sufficient voltage to initiate. The user
is encouraged to disarm and return to safe voltage. After
waiting the minimum of 10 minutes re-entry time as per the
manufacturer requirement, proceed to the string in question to
identify the source of the fault.
A Tagger may be used to aid in this process. The first step
would be to check if there is a leakage problem on the string.
Once this is resolved the user will need to test the string to
check if all the expected detonators are present on the line.
This warning will trigger when the cumulative detonator wire
length for a channel is exceeded. The down-line wire length of
each detonator is stored in memory, and the software can thus
calculate the total down-wire length per channel. If this total
length exceeds the set max wire limit setting the warning will be
triggered. It is recommended that the user decrease the down-
wire length on the channel in question by moving detonators to
another channel.
This warning will be displayed during the firing window if the
voltage at the last detonator is too low for successful blasting.
In such a case the user is encouraged to disarm and return to
safe voltage. After waiting the appropriate amount of time, the
user may proceed to the channel in question to identify the
source of the fault.
A Tagger may be used to aid in this process. The first step
would be to check if there is a leakage problem on the string.
Once this is resolved the user will need to test the string to
check if all the expected detonators are present on the line
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