Dac Setup Sub-Menu - Honeywell SC Series Installation Instructions Manual

Signal Conditioning, Self Calibrating Digital Indicators
If the CALIBRATION TYPE is 3-Point Known Load Calibration...
• The display will read DOING 3POINT CAL, and prompt you to
APPLY 00000 UNIT (where 00000 and UNIT are previously
entered as KNOWN POINT 1/3 and DISPLAY. UNITS). When you
have applied this load to the transducer, press [ENTER].
• The display will read WORKING, then APPLY 00500 UNIT (where
00500 and UNIT are previously entered as KNOWN POINT 2/3
and DISPLAY. UNITS). When you have applied this load to the
transducer, press [ENTER].
• The display will read WORKING, then APPLY 01000 UNIT (where
01000 and UNIT are previously entered as KNOWN POINT 3/3
and DISPLAY. UNITS). When you have applied this load to the
transducer, press [ENTER].
• Upon completion, the display will indicate DONE and the
instrument will return to the RUN mode.
If the CALIBRATION TYPE is 5-Point Known Load Calibration...
• The display will read DOING 5POINT CAL, and prompt you to
APPLY 00000 UNIT (where 00000 and UNIT are previously
entered as KNOWN POINT 1/5 and DISPLAY. UNITS). When you
have applied this load to the transducer, press [ENTER].
• The display will read WORKING, then APPLY 00250 UNIT (where
00250 and UNIT are previously entered as KNOWN POINT 2/5
and DISPLAY. UNITS). When you have applied this load to the
transducer, press [ENTER].
• The display will read WORKING, then APPLY 00500 UNIT (where
00500 and UNIT are previously entered as KNOWN POINT 3/5
and DISPLAY. UNITS). When you have applied this load to the
transducer, press [ENTER].
• The display will read WORKING, then APPLY 00750 UNIT (where
00750 and UNIT are previously entered as KNOWN POINT 4/5
and DISPLAY. UNITS). When you have applied this load to the
transducer, press [ENTER].
• The display will read WORKING, then APPLY 01000 UNIT (where
01000 and UNIT are previously entered as KNOWN POINT 5/5
and DISPLAY. UNITS). When you have applied this load to the
transducer, press [ENTER].
• The display will now read RETURN PNTS.=NO. If you press
[ENTER], the display will indicate DONE and the instrument
will return to the RUN mode. If you use the [UP] button and
[ENTER] to select RETURN POINTS=YES, you may now apply
the same loads again but in reverse order. This will allow the
instrument to measure and partially eliminate any hysteresis
that may be present in the transducer. After the loads have
been applied again, the display will indicate DONE and the
instrument will return to the RUN mode.
62 Honeywell Sensing and Control

12.6.7 DAC SETUP Sub-Menu

This sub-menu contains four items that control the Digital-to-Ana-
log Converter (DAC) output of the channel.
DAC. CHANNEL Menu Item
This chooses which channel will drive the DAC output. Normally,
the DAC located on a particular channel will be driven by that
channel, but that need not be the case. For example, if several
channels were assigned to load cells on a weighing platform, the
sum of all channels could (mathematically) drive one channel's
DAC output.
If the DAC is set-up to be driven by its own channel's tracking
value, the Analog Output will have the frequency response speci-
fied by the channel's FREQ. RESPONSE menu item. Otherwise, the
Analog Output will operate more slowly.
DAC. SOURCE Menu Item
This designates the data source of the channel monitored by the
analog output.
The options for this menu item are:
• "TRACK" means the live tracking value of the channel.
• "PEAK" means the highest value of the channel since the
peak/valley detector was last cleared.
• "VALLEY" means the lowest value of the channel since the
peak/valley detector was last cleared.
If the DAC is set-up to be driven by its own channel's tracking
value, the Analog Output will have the frequency response speci-
fied by the channel's FREQ. RESPONSE menu item. Otherwise, the
Analog Output will operate more slowly.
DAC. ZERO-SCALE Menu Item
This specifies what value, in engineering units, corresponds to
zero output on the Analog Output.
"Zero output" might be 0 Volts, 2.5 Volts, 5 Volts, 4 mA or 12 mA
depending on if the channel has a voltage or current output and
how it is configured. See "Analog Output Configuration" on page
68 for details.
DAC. FULL-SCALE Menu Item
Specifies what value, in engineering units, corresponds to full
output on the Analog Output.
"Full output" might be 5 Volts, 10 Volts or 20 mA depending on if
the channel has a voltage or current output and how it is config-
ured. See "Analog Output Configuration" on page 68 for details.
008-0608-00
Rev. G,