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MAN0889_Issue 3_03/13
Unit has been inhibited by the
Interrogator
Output is 2mA
(INHIBIT)
Unit executing power-up routine
Wrong communication mode
selected on the Interrogator
Comms Error
99 reported by
Interrogator software version is
Interrogator
incompatible with Excel software
software
version
Incorrect communication
connection
Comms Error
100 reported
by Interrogator
Excel unit is not powered up
software
Interrogator battery low
Interrogator
The installation has failed to
Installation
meet the acceptable criteria
message
Failed
when attempting
for signal levels
initialisation
5. Problem Solving
Searchline Excel Cross-Duct Technical Handbook
Release output from INHIBIT state using SHC1 Interrogator.
1) Wait for 1 minute. When power-up routine is completed
satisfactorily the unit's output should exit the INHIBIT state.
2) If unit remains in INHIBIT, check the +24V supply is
reaching the unit. If the voltage is below +18V or is fluctuating
above and below +18V, the unit may be being prevented
from completing power-up. (This is an electrical installation
problem.)
1) Select Change Mode option on the Interrogator.
2) Change the communication mode to Excel
Version 1V0 Interrogator software to be used with Excels running
1V0 software.
Version 2V0 Interrogator software can be used with Excels
running 2V0 software or higher.
Version 3V0 and 3V1 Interrogator software can be used with
Excels running 3V0 software or higher.
The latest version of Interrogator software is 4V0. This version
works with 3V0 and higher Excels, Optima and Optima Plus.
1) Check that Interrogator is correctly plugged into the IS socket
on the DVC100(M)/DX100(M) junction box.
2) Check that the RS485 A and B wires from the Excel unit have
been connected to the correct terminals inside the DVC100(M)/
DX100(M) junction box
Check that the +24V supply is reaching Excel unit correctly.
The Supply voltage at unit should be between +18V and +32V.
Check the Interrogator battery and replace if low.
See Appendix A. Section A.4
1) Check that the signal levels reaching the Receiver are greater
than 0.7 and less than 1.5. If not, check that the Reflector
Panel is mounted opposite the Transmitter and Receiver unit
and perpendicular to the beam.
2) Check that the correct range has been entered for the installed
path length.
3) Check that there are no objects obscuring part or all of the
beam path.
4) Check that the windows of the Receiver and Transmitter and
the Heated Reflector Panel are clean.
5) Check that the structures that the Transmitter and Receiver
are mounted on are stable and free from significant angular
movement/vibration.
6) Check that there is no gas in the beam - which prevents
successful zeroing.
39
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