Kistler-Morse STXplus, Инструкция по установке и эксплуатации

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CHAPTER 3: STAND-ALONE ANALOG CALIBRATION AND SET UP
NOTE
If you do not press a button within
15 seconds the STXplus exits the
programming mode. Once step 2 has been
completed above, the HI Span value will be
restored.
SYSTEM SET UP
The STXplus allows you to set up system
parameters using the programing buttons
(See Table 3-2 on Page 3-9). This provides
the abiltity to set up the system without the
use of an external device. The programming
buttons are used to set up the following
parameters:
1. Current Output Range
2. Current Output Tracking
3. Current Output Fail-safe
4. LO Span and HI Span
5. 0mA, 4mA, and 20mA Trim
6. Serial Port 1 Baud Rate/Protocol
7. Averaging Factor
8. DSP Filter
9. DSP Enable
10. DSP Step
11. Input Voltage Range
12. Modbus Baud Rate
13. Channel Enable
DESCRIPTIONS
Current Output Range
The analog current transmitter may be set
to transmit current output based on either
0-20mA, 4-20mA, 20-4mA, or 20-0mA.
The
default is 4-20mA.
Current Output Tracking
The analog current transmitter may be set to
transmit based on either net weight or gross
weight. If a tare is going to be performed,
this must be set to net.
The default is gross
weight.
Current Output Fail-safe
If the STXplus detects a problem, one of
three fail-safe (Fsafe) conditions can be
applied to the analog current output:
1. 0mA or 4mA
2. 20mA
3. No change.
The default is no change.
Following are examples of fail-safe
conditions:
1. Analog-to-digital converter over range/
under range condition.
2. Engineering units over range.
3. Communication error with the STXplus
PCB.
LO Span and HI Span
The LO Span and HI Span set the calibration
points based on material weight in the tank.
When a LO Span or HI Span is entered, the
STXplus reads the input signal from the
sensors and stores this data. See
Figure 3-3.
0mA, 4mA, and 20mA Trim
If the current output of the STXplus does not
match the device receiving the output, it can
be trimmed. This function should be
completed before calibration.
Serial Port 1 Baud Rate/Protocol
The serial port baud rate determines the
speed with which the STX communicates
and the protocol to an ORB 2.2, a remote
monitor, or remote display.
The default is
9600 with Kistler-Morse
®
protocol.
Averaging Factor
This parameter sets the number of
readings (from 1 to 100) the STXplus
averages for each output. The STXplus
calculates a running average. The larger the
number of readings in the running average,
the smaller effect a variation in signal has on
3-6