Warning And Fault Messages - Honeywell Searchpoint Optima Plus Operating Instructions Manual

MAN0905_Issue 7_07/17

14.2 WARNING and FAULT messages

SHC1 HART
W – Temp Lim Warning
Exceeded (error 0) Temperature Limit
Exceeded
F – Temp Lim Fault
Exceeded (error 0) Temperature Limit
Exceeded
W / F – Bad 24V Warning / Fault
Supply (error 4) Bad 24V Supply
W – Bad 4-20mA Loop Warning
(error 5) Bad 4-20mA loop
Note: this error will Note: this error
LATCH the 4-20 will LATCH
mA output the 4-20 mA
output
F – Bad 4-20mA Loop Fault
(error 5) Bad 4-20mA loop
Note: this error will Note: this error
LATCH the 4-20 will LATCH
mA output the 4-20 mA
output
W / F – Neg Gas Warning / Fault
Negative gas
Reading (error 6)
reading
14. Problem Solving
Meaning
®
Specified operating
temperature limits nearly
exceeded.
Specified operating
temperature limits exceeded.
24 V supply is outside of
operating limits.
Error of greater than ±0.5 mA
in analogue output
The unit cannot generate
the correct current output to
signal a gas reading (the unit
reverts to Fault rather than
under-reading)
Negative offset on the gas
reading.
Searchpoint Optima Plus with optional HART
Solution
1. Protect the unit from heat / cold.
2. Re-locate the unit.
3. As an option consider installing the unit in a
sampling system.
1. Remove the unit from service. Certification and
warranty are invalidated.
1. Ensure that the supply voltage at the unit is
between 18 V and 32 V.
2. Re-cycle the power or carry out a Reset to
clear the latch. See Maintenance, View and Clear
Faults or Warnings
1. If this Warning occurred while connecting or
disconnecting a multimeter, re-cycle the power or
carry out a Reset to clear the latch. See
Maintenance, View and Clear Faults or Warnings
2. Check the 4-20 mA loop connections and
cabling
3. Check that the loop resistance is less than
600 Ω. In current source mode, for supply
voltages of 18 to 20 Vdc the maximum loop
resistance is 500 Ω.
1. Check the 4-20 mA loop connections and
cabling
2. Check that the loop resistance is less than
600 Ω. In current source mode, for supply
voltages of 18 to 20 Vdc the maximum loop
resistance is 500 Ω.
3. Re-cycle the power or carry out a Reset to
clear the latch. See Maintenance, View and Clear
Faults or Warnings
1. Check that the optics are clean and dry. If the
unit is in an environment of very damp /
condensing conditions, consider additional
protection.
2. Check for the presence of interferent gases
e.g. acetylene or ammonia.
3. Check for Temp Lim Exceeded warnings or
faults.
4. Clean optics and ensure they are dry. Re-zero
the unit provided the atmosphere is gas-free (see
Maintenance, Inspection).
72
output
®
Operating Instructions
2108M0550