WIKA CF1H - Manual (Page 72)

Operating Instructions Temperature Indicating Controller CF1H
V 1.2
•
01/2007 - 72 -
<Indication>
Phenomenon Presumed cause and the action
If indication
of PV display
is abnormal or
unstable. • Designation of the Sensor input is improper.
Î Set the Sensor input properly by the Rotary switch
(SW303) and the DIP switch (SW304).
(page 10, 11)
• Temperature unit (°C or °F) is mistaken.
Î Set the unit properly by the DIP switch. (page 10)
• Sensor correcting value is unsuitable.
Î Set the value suitably. (page 23)
• Specification of the Thermocouple or RTD is improper.
• AC may be leaking into thermocouple or the RTD circuit.
• There may be an equipment producing an inductive
fault or noise near the controller.
<Key operation>
Phenomenon Presumed cause and the action
If setting mode
cannot be selected. • Manual control is selected.
Î
Change the mode to Automatic control (page 36)
If settings are
impossible.
If the value does
not change by the
, keys. • Setting value lock (mode 1 or 2) is designated.
Î
Release the lock designation. (page 22)
• During PID auto-tuning.
Î
Cancel the tuning if necessary. (page 17)
If the setting
indication does not
change in the rated
scale range even if
the , keys
are pressed, and
setting is impossible.
• Main setting value high limit or low limit may be
set at the point the value does not change.
Î Set it again by Auxiliary function setting mode 1.
If it does not start
even if the
OUT /
OFF
key
is pressed in the
Program mode.
• Step time is not set.
Î
Set the step time. (page 35)