Yokogawa AXFA14G/C - Manual (Page 21)

IM 01E20C02-01E 5-1
5. BASIC OPERATING PROCEDURES
5. BASIC OPERATING PROCEDURES
(USING THE DISPLAY UNIT)
The modification of data settings from the display unit can be carried out using the three
setting switches (infra-red switches) - namely, the , , and switches.
The infra-red switches enable the user to set parameters without opening the cover.
This chapter will provide a description of basic data configuration and the methods to be
used with the three setting switches. The AXFA14 or the AXF integral flowmeter can also
be operated using a handheld Brain Terminal (BT200) or a HART Communicator. (Please
refer to Chapter 7 for operation via Brain Terminal and Chapter 8 for operation via HART
Communicator.)
For F OUNDATION Fieldbus protocol, please refer to IM 01E20F02-01E.
For PROFIBUS PA protocol, please refer to IM 01E20F12-01E.
WARNING
Be sure to set parameters as “Protect” on the write protect function after finish of
parameter setting work.
Under extremely rare case, the infra-red switches may respond unexpectedly in
such conditions as sticking ball of water or extraneous substances on the surface
of display panel glass according to the principle of infra-red switch operation.
Its probability rises in such cases as sticking rain water by storm or other similar
situation and washing up work near flowmeter installation place.
Either to illuminate or stop illuminating the infra-red switches by the flashlight may
cause the mis-reaction.
Refer to Chapter 6 “Menu P: Parameter Protection Items” and section “10.2.2”
how to use the write protect function in detail.
IMPORTANT
Operate the display unit under the condition where direct sunlight, etc... do not
shine to the setting switches directly when the parameter setting operation is
carried out.
NOTE
(1) Always use the setting switches with the cover of the AXFA14 or the AXF
integral flowmeter closed.
(2) Use these switches with them covered by the glass window.
(3) If dirt, dust or other substances surfaces on the display panel glass, wipe
them clean with a soft dry cloth.
(4) The operation with dirty gloves may cause a switch response error.