Honeywell SC Series - Chapter 12 High-Level Input Channel; 12.1 Features and Specifications; 12.2 Wiring and Jumper Configuration

48 Honeywell Sensing and Control
Signal Conditioning, Self Calibrating Digital Indicators
Rev. G, 008-0608-00
Chapter 12 High-Level Input
Channel
12.1 Features
The High-Level Input channel provides a dc supply voltage to
and accepts voltage or current signals from amplified transduc-
ers such as pressure transducers, load cells and dc-dc LVDTs.
These signals are digitized, converted into engineering units, and
placed into the track, peak and valley data values of the channel.
Setup and calibration of the channel is made manually through
the SETUP menu mode. Signature Calibration is not available
with amplified transducers.
The analog-to-digital converter input circuit features adjustable
digital, low-pass filtering, 12- to 18-bit resolution (depending on
the filter setting) and has several different input ranges. These
manyrangesallow±50,000countresolution(attheslowestlter
setting) across a wide variety of input ranges.
A combination of SETUP menu items and hardware jumpers are
used to configure the excitation supply output voltage (+28 Vdc,
±15Vdc,+15Vdcor+12Vdc),theinputtype(voltageorcurrent)
and input reference (differential or single ended).
Two methods of calibrating the High-Level Input channel to the
transducer are available: known-load calibration and shunt cali-
bration. The benefits of each are discussed in “CALIBRATION TYPE
Menu Item” on page 59.
Two rear panel control inputs can be field-configured for such
functions as remote tare, disabling peak/valley detection and
clearing the peak/valley values. A voltage or current digital-to-
analog output is also provided.
12.2 Wiring
12.2.1 Channel Connector
Connect the amplified transducer, in-line amplifier or dc-dc LVDT
to a High-Level Input channel by wiring it to the 12-pin connec-
tor of that channel. The Customer Information Sheet that shipped
with the instrument describes which cards are installed in each
channel. The pin-out for this connector is shown on the following
table.
Table 12-1: High-Level Input Channel Pin Connections
Pin Label Function Ref.
Pin
1 (top) +EXC (+)Excitation 10
2 SHUNT1 Shunt Cal Relay 3
3 -SHUNT2 Shunt Cal Relay 2
4 -EXC (-)Excitation 10
5 +SIG (+)Signal 10
6 -SIG (-)Signal 10
7 +OUT Analog Output 8
8 -OUT Analog Return -
9 N/C No Connection -
10 DGND Digital Ground -
11 AUX1 Auxiliary Function 1 (connect to
pin 10 to activate)
10
12
(bot-
tom)
AUX2 Auxiliary Function 2 (connect to
pin 10 to activate)
10
The Analog Output and Analog Return pins are electrically iso-
lated from all other pins on the instrument.
CAUTION
Identify the amplified transducer or in-line amplifier accord-
ing to the Option Code or model name as shown on its serial
number tag. Use this information to select the correct wiring
diagram on the following pages. Incorrect wiring can damage
both the transducer and the instrument.
Failure to comply with these instructions may result in
product damage.