Honeywell 5704, Руководство по эксплуатации

Страница: 150 / 191

6-9
MAN0448_Issue 13_01-2010 5704 Control System
005704-M-5001 A03249
CHAPTER 6 - OPERATING INSTRUCTIONS
(1) Push and hold the required channel card RESET/SElECT push-
button for approximately 1.5 seconds until the selected icon appears
on the channel display.
(2) Use the Engineering Card ( ) and ( ) push-buttons to select the
required channel.
(3) Push the SIGNAl push-button and the selected channel card display
will indicate the sensor signal alternating with the selected channel
number. The displayed value will depend on the type of control card
fitted as follows:
a. Four Channel Control Card - Catalytic
The display will show the live bridge
voltage measured between 01 and
02 in mV. 02 is the centre point of the
second half of the Wheatstone bridge
which is on the channel card.
b. Four Channel Control Card - 4-20mA
The display will show the live sensor
loop current in mA.
(4) Push the ( ) or ( ) push buttons or wait 30
seconds to exit the SIGNAl mode.
4.7 View Clock/Calendar
The operation of the ClOCK push-button will cause the present time
and date to be displayed on a selected channel card.
Note: This operation requires a control card to be selected but the
operation has no effect on the selected control card, which is used
as a display device only.
To enter the clock/calendar operation, proceed as follows:
(1) Push and hold the required channel card RESET/SElECT push-
button for approximately 1.5 seconds until the selected icon appears
on the channel display.