Auxiliary Analog Inputs (Lin/Tc) - gefran GFW ADV Configuration Manual

AUXILIARY ANALOG INPUTS (LIN/TC)

The GFW has 4 inputs defined as auxiliary (IN2 for zone 1, IN3 for zone 2, IN4 for zone 3, IN5 for zone 4) to which
TC or linear temperature sensors can be connected.
The presence of these inputs is optional
Input values are available in variables In.2/In.3/In.4/In.5 and can be read or used to activate assigned alarm signals.
When an auxiliary input is present, you have to define the following parameters:
- sensor type (AI.2, AI.3, AI.4, AI.5);
- its function (tP.2); (only for IN2 input)
- decimal point position (dP.2, HS.3 – LS.3, HS.4 – LS.4, HS.5 – LS.5);
- scale limits (HS.2 – LS.2);
- offset correction value (oFS.2, oFS.3, oFS.4, oFS.5).
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, Flt.3, Flt.4, Flt.5,) that can be used to reduce noise on the input signal.
194
AI. 2
553
AI. 3
554
AI. 4
555
AI. 5
181
tp. 2
677
dP. 2
568
dP. 3
569
dP. 4
570
dP. 5
Specifies the number of decimal figures used to represent the input signal value: for
example, 875.4 (°C) with dP.S: = 1
80963B_MSW_GFW_11-2012_ENG
R/W Select type of auxiliary sensor input 2
Select type of auxiliary sensor input 3
R/W
R/W Select type of auxiliary sensor input 4
R/W Select type of auxiliary sensor input 5
Definition of auxiliary analog input
R/W
function
Decimal point position for the auxiliary
R/W
input scale 2
Decimal point position for the auxiliary
R/W
input scale 3
Decimal point position for the auxiliary
R/W
input scale 4
Decimal point position for the auxiliary
R/W
input scale 5
Auxiliary inputs sensors table
Type 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
tP.2 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
8 analogic remote manual
from main input
16 remote manual from
analogic input
32 remote manual from
PWM 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
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
0
(*)
(*)
(**)
(*)
(*)
(*)
0
0
0
0
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