<4. Setting converter>
4-33
IM 12A01F01-03EN 2nd Edition : Feb. 19, 2019-00
Location
Alarm
Alarm name
default*1
DO
Device status
SENCOM comm. error *3
F
Measure alarm
Temperature too high
S
Temperature too low
S
DO too high
S
DO too low
S
SSA temp outside spec
S
Sensor status
Sensor not detect
F
Temp element not detect
F
ID chip failure
F
Calibration Due
N
Sensor membrane failure
N
*1:
F: Failure, C: Function Check, S: Out of Specification, M: Maintenance required, N: Off
*2:
Latest revision does not support script, or arithmetic by multiple sensors.
*3:
After power on, when no single communication is established with SENCOM SA on sensor connection number, this error is
sorted out according to the error setting of PH sensor. After the communication is established, error are identified according to the
sensor type, because FLXA402 can identify sensor type automatically.
*4:
Wash recovery alarm stays on until another wash starts. Set the alarm to OFF, if you need.
CAUTION
Do not cancel error settings if the cancellation may cause hazards.
NOTE
The “Impedance 1 too high/too low” and “Impedance 2 too high/too low” alarms are displayed in
the Error setting. In general, for a pH sensor, “Impedance 1” represents “glass electrode,” and for
an ORP sensor, it means “metal electrode.” “Impedance 2” represents the reference electrode in
all cases.
The “Impedance 1 too high/too low” and “Impedance 2 too high/ too low” errors apply to sensors
with liquid earth. Sensors with liquid earth include PH8EFP, PH8ERP, PH8EHP, OR8ERG,
OR8EFG.
For sensors not equipped with liquid earth, these alarms should all be set to Off. These sensors
include HA405, HA406, DPA406, DPA405, DPAS405, HF405, HA485, DPA485.
For measuring a solution with low conductivity such as pure water pH measurement, set the
“Impedance 2 too high” error to Off.
NOTE
When ORP is specified as a sensor type in “Sensor setup”, and when an ORP sensor, such as
OR8ERG or OR8EFG, doesn’t have any temperature element, set both of “Temperature too
high/low” in “Error settings” to Off so that no related error is caused. Due to the open input of
temperature signal, a false error may happen as if temperature goes over a high limit or a low
limit.
For details of errors, refer to MODBUS technical information