Analog I/O; Analog Input (Ain) Setup - Generac Power Systems Power Zone PZCONSVR Owner's Manual

Installation and Operation

Analog I/O

Analog I/O is based on the similar Channels and
Functions system used by the
Analog inputs usually come preprogrammed from the
factory. An analog input (to the program) can be a real
physical analog input or it can be a computed (or derived)
input. For example, kW can be an analog input to the
program, but it is computed (derived) based on multiple
measurements, not read from an input pin. Analog inputs
can also come from modules attached to the Power Zone
system via CAN bus.
Analog inputs are automatically mapped to certain places
and used within the program (see "Analog Input
Mapping" diagram below). Further custom mapping such
as an input to an output can be performed as desired.
Mapping is performed by channel number.
Physical analog inputs (inputs that have a physical pin)
can be of different hardware types:
0-1 V
•
0-5 V
•
0-10 V
•
Resistive
•
4-20 mA
•
The hardware must be set up to accommodate each of
these inputs.
Analog readings from sensors often need to be
converted from raw A/D counts to usable units. This can
be performed by applying a simple "Mx+B" calibration
equation, using an up to 10 point translation table, or
combining the calibration equation and a translation
table.

Analog Input (AIN) Setup

See 3-61. Select an unused channel ID by
1. Figure
selecting the analog input channel name in the
Analog Input Diagnostics screen.
Figure 3-61. Analog Input (AIN) Diagnostics Screen
See 3-62. Select the input source (a pick
2. Figure
list will be displayed of physical, derived or CAN
bus inputs) (A).
Select the function code (B).
3.
28
Digital I/O.
010200
Select the sensor type (see sensor datasheet if
4.
unknown) (C).
If the sensor is a resistive type, select a pull up
5.
resistor (D). You may need the Generac tool in
conjunction with the sensor datasheet to choose
this. The pullups are used when the sensor is a
passive resistance to ground. The pullup value is
selected based on the resistance range of the
sensor.
Click the "Enable" checkbox (E) to enable the
6.
channel. If you are not using the channel, do NOT
check "Enable", as it slows down the processing
time.
Apply filtering (F) to the reading if necessary. The
7.
larger the number entered, the slower the
response will be. See
the filters.
Choose the way the reading is translated (raw,
8.
calibration and/or table) (G).
If the reading is to be calibrated, enter the
9.
appropriate "M" and "B" values (H) and (I).
Click "Apply Changes" (J).
10.
A
B
C
D
E
F
G
H
I
J
Figure 3-62. Analog Inputs (AIN) Setup
Owner's Manual for Power Zone Connectivity Server
for time constants on
Table 2
007568