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SC 2000, SC2001, SC3004
12.6.8 DIAGNOSTICS Sub-Menu
DAC FULL SCALE Menu Item
When this menu item is selected, the Analog Output of the
channel is forced to its full-scale output, then DAC UPDATED is
displayed. This is useful when calibrating or trimming the readout
connected to the Analog Output.
DAC ZERO SCALE Menu Item
When this menu item is selected, the Analog Output of the
channel is forced to its zero-scale output, then DAC UPDATED is
displayed. This is useful when calibrating or trimming the readout
connected to the Analog Output.
VERSION INFO Menu Item
This menu item displays the part number and revision level of the
firmware used by this channels microprocessor.
DISPLAY ADC Menu Item
The options for this menu item are:
•
"OFF" will allow the [VALUE] button to cycle through "TK"
(tracking value), "HI" (peak value) and "LO" (valley value).
This is the recommended option.
•
"ON" will allow the "AD" (percentage of the Analog-to-Digital
converter's full-scale digitizing capability) display source
to be available along with "TK" (tracking value), "HI" (peak
value) and "LO" (valley value) when the [VALUE] button is
pressed on the front panel.
The Analog-to-Digital converter counts are displayed as a per-
centage from -100.00% to 100.00%.
This can be used to verify that the transducer's output does not
exceed the input range of the instrument. If the Analog-to-Digital
converter readings display more than ±10 % when there is no
load on the transducer, the transducer has a high zero offset.
LINEARIZATION Menu Item
The options for this menu item are:
•
"ON" will allow linearization data obtained from either the Sig-
nature Module or a 3-Point or 5-Point Known Load Calibra-
tion to affect a channel's scaled values. This is the recom-
mended option.
•
"OFF" will not allow linearization data to effect the channel's
scaled values. This is useful when diagnosing problems in a
calibration procedure.
DISABLE CHANNEL Menu Item
The options for this menu item are:
•
"ON" will bypass the INITIALIZE and RUN modes of the chan-
nel. The track, peak and valley values of the channel are
forced to 0.
•
"OFF" will allow normal operation of the channel.
12.7 Analog Output Configuration
12.7.1 Identifying the Output Type
A High-Level Input channel is available with one of two types of
digital-to-analog (DAC) outputs: voltage or current. You can de-
termine which type of output a channel has by one of three ways:
•
Consulting the instrument's Customer Information Sheet
•
Examining the SYSTEM MENU -> CONFIGURATION -> CHANNEL nn
TYPE menu item where nn is the number of the channel. If the
channel's type is HIGH-LEVEL V, it has a voltage output. If the
channel's type is HIGH-LEVEL I, it has a current output.
•
Examining the channel's circuit board as shown in the figure
below.
12.7.2 Channel Menu Items
The Analog Output can be driven by any channel's track, peak or
valley value.
See the "Channel Menu" section earlier in this chapter for a com-
plete listing of SETUP menu items available on the DAC. SETUP
sub-menu.
12.7.3 Output Selection
Jumpers located on the channel's circuit board determine what
outputs are generated when the value selected to drive the Ana-
log Output (from the DAC. CHANNEL and DAC. SOURCE menu items)
equals the DAC. FULL SCALE and DAC. ZERO SCALE settings.
DAC. ZERO
SCALE
Output
CHANNELS WITH VOLTAGE OUTPUT
0 V to 5 V
2.5 Volts
±5 V
0 Volts
0 V to10 V
5 Volts
±10 V
0 Volts
CHANNELS WITH CURRENT OUTPUT
4 mA to 20 mA 4 mA
4 mA to 20 mA 12 mA
008-0608-00
Rev. G,
J30
J31
DAC. FULL
jumper
jumper
SCALE
Output
5 Volts
open
closed
5 Volts
open
open
10 Volts
closed
closed
10 Volts
closed
open
20 mA
open
open
20 mA
open
closed
Honeywell Sensing and Control
63
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Troubleshooting
