Honeywell Searchpoint Optima Plus - 14. Problem Solving; 14.1 Troubleshooting

MAN0905_Issue 7_07/17 Searchpoint Optima Plus with optional HART
®
output
Operating Instructions
2108M0550
68
The Troubleshooting section explains how to deal with problems that may be encountered when using
Searchpoint Optima Plus.
The Warnings and Faults section explains the meaning of diagnostic messages and the best course of
action to deal with the problem.
Some types of faults and warnings will latch the 4-20 mA output and need to be cleared by a Reset.
Note:Ifanycongurationchangeshavebeenmade,wait15secondsbeforedoingasoftresetorcycling
the power.
Note:Whenconnectingordisconnectingamultimeter,powerofftheSearchpointOptimaPlus,otherwise
the unit will indicate a latched warning that the 4-20 mA loop was broken. If this occurs, it can be cleared
usingtheSHC1HandheldInterrogatorortheHART
®
communications. See Clear Faults or Warnings.
Note:SearchpointOptimaPluscontinuestofunctionasagasdetectorwhileindicatingWarning,although
aspects of its performance may be reduced.
IfaproblempersistspleasecontactHoneywellAnalyticsforadvice,usingthecontactdetailsgivenonthe
back page.
14.1 Troubleshooting
Fault / Problem Possible Cause Remedial Action
No analogue output Electrical installation problem 1. Check that the +24 V supply is
reaching the unit. Voltage at the unit should be
between +18 V and +32 V.
2. Check cables and connections to the unit, especially
the 4-20 mA loop connections
Output is < 1 mA or 1 mA Unit is in Fault condition 1. Connect the SHC1 Handheld Interrogator to the unit
or use the HART
®
communications to ascertain the reason for the Fault
report (see Maintenance).
2. Diagnose the problem using the table of Warning
and Fault messages below.
Output is 2 ± 0.2 mA (or other
congured Inhibit level)
Unit is in Inhibit 1. The Inhibit mode has no time out. A procedure may
have been aborted while the unit was in Inhibit.
2. Connect to the HART
®
communications and select
Device Setup, Test, Inhibit then End Inhibit
or
Connect the SHC1 Handheld Interrogator and select
Calibrate then Normal 4-20.
Output is 3 ± 0.2 mA (or other
congured Warning level)
Unit is indicating a Warning
Note:Unitwillstillfunction
as a gas detector
1. Connect the SHC1 Handheld Interrogator to the unit
or use the HART
®
communications to ascertain the
reason for the Warning report (see Maintenance).
2. Diagnose the problem using the table of Warning
and Fault messages below.
14. Problem Solving