Auxiliary Analog Input (Lin/Tc) - gefran GFX4-IR Configuration And Programming Manual

AUXILIARY ANALOG INPUT (LIN/TC)

The GFX4-IR has 4 inputs defined as auxiliary (IN5 for zone 1, IN6 for zone 2, IN7 for zone 3, IN8 for zone 4) to which
TC or linear temperature sensors can be connected.
The presence of these inputs is optional and, for model GFX4-IR-x-x-4-x-x is defined by the order code.
The input value, saved in variable In.2, can be read and used to activate the alarm signals assigned to it.
When an auxiliary input is present, you have to define the following parameters:
- sensor type (AI.2);
- its function (tP.2);
- decimal point position (dP.2);
- scale limits (HS.2 – LS.2);
- offset correction value (oFS.2).
If the sensor is a thermocouple, the minimum and maximum limits can be defined in the specific scale of the sensor
used. The range of values settable for alarm setpoints depends on these limits.
There is also a digital filter (Flt.2) that can be used to reduce noise on the input signal.
194
AI. 2
Calibrate the UCA inputs by means of the GFX-
OP terminal.
The procedure is described in the GFX-OP
manual.
181
tp. 2
677
dP. 2
Specifies the number of decimal figures used to represent the input signal value: for
example, 875.4 (°C) with dP.S: = 1
Scale limits
404
LS. 2
603
XS. 2
Setting the offset
605
oFS. 2
80415F_MSW_GFX4-IR_05-2019_ENG
R/W Select type of auxiliary sensor input
Definition of auxiliary analog input
R/W
function
Decimal point position for the auxiliary
R/W
input scale
R/W Minimum limit of auxiliary input scale
R/W Maximum limit of auxiliary input scale
R/W Offset for auxiliary input correction
Auxiliary inputs sensors table
Type of probe Without dec. point
or sensor
0 TC J °C
1 TC J °F 32/1832
2 TC K °C
3 TC K °F 32/2372
4 TC R °C
5 TC R °F 32/3182
6 TC S °C
7 TC S ° F 32/3182
8 TC T °C -200/400
9 TC T °F -328/752
34 0...60 mV -1999/9999
35 0...60 mV Custom linearization
36 12...60 mV -1999/9999
37 12...60 mV Custom linearization
99 Input off
Table of auxiliary input functions
Auxiliary LIMITS FOR SETTING the LS.2 and HS.2
input function
0 None
1 Remote setpoint Absolute Lo.S,
deviation -999
2 Manual analog remote
3 Reset analog power
10 Remote manual analog
from main input
(*) see: Settings – Control Setpoint
(**) see: Controls –PID Parameters
Decimal point table
Format
0 xxxx
1 xxx.x
2 xx.xx (*)
3 x.xxx (*)
(*) not available for TC probes
Min...max input scale selected in AI.2 and tP.2
Min...max input scale selected in AI.2 and tP.2
-999 ...999
Scale points
With dec. point
0/1000 0.0/999.9
32.0/999.9
0/1300 0.0/999.9
32.0/999.9
0/1750 0.0/999.9
32.0/999.9
0/1750 0.0/999.9
32.0/999.9
-199.9/400.0
-199.9/752.0
-199.9/999.9
Custom linearization
-199.9/999.9
Custom linearization
min max
-1999 9999
Absolute Hi.S,
deviation +999
-100.0% +100.0%
-100.0% +100.0%
0
0
(*)
(*)
(**)
(*)
0
0
1000
0
21