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In this regard, it is good practice for the operating range of the probes to allow the set point to be set away from the extremes, by a value greater than the maximum
differential envisaged. For example, if the differential being set does not exceed 20%, set point should not be outside of the interval 20% to 80%.
Associated parameters
par.
Spv
Modb
INTT
I15
115
AWUP
I16
116
EPIR
D5
5
To simplify the fine-tuning of the parameters, some variables that are available that describe the status of control in terms of the various components:
ERRR
I38
138
OUTP
I39
139
OUTI
I40
140
OUTM
I41
141
OUTR
I42
142
The values are expressed with the maximum resolution possible (8 bits plus sign), therefore the value 255 corresponds to 100%.
6.10
Slave mode function
The control algorithm is disabled and the output of the controller is directly proportional to input probe B1, in one of the three modes that can be selected by parameter
(alternatively, its status can be set using dipswitch 4).
OUT
100%
max
50%
min
Normally the control signal is supplied by an external controller using the 0/10V standard, however any signal compatible with those allowed for probe input B1 can be
used, setting the input accordingly.
Warning: if the control signal applied to probe input B1 is 0/10V, the setting must be made by manually moving a jumper.
With probe input B1 set for a 0/10V signal, the fault probe can no longer be managed. When the function is active, probe input B2 is not managed, irrespective of its
setting.
The function is disabled by default.
Jumper
JA, JB
0/10V input configuration (probe input B1 only)
Associated parameters
par.
Spv
Modb
MODE
I10
110
PB1M
I17
117
Code +030220391 – rel 1.1 07/11/06
OUT
100%
max
diff
MAX
min
setp
MIN
range
def
uom
1 to 30
10
1min
0 to 100
50
1%
0/1
0
1
-255 to 255
R
1
-255 to 255
R
1
-255 to 255
R
1
0 to 255
R
1
0 to 255
R
1
SLAVE Mode 1
OUT
100%
max
50%
min
50%
100%
SLAVE Mode 3
OUT
100%
max
(max+min)/2
min
50%
range
def
uom
0 to 3
0
1
0 to 3
2
1
diff
Fig. 6.f
description
Integral time for PI control
Limitation of the integral action (antiwind-up)
Enable PI control (Integral)
control error (255 = 100%)
proportional component (255 = 100%)
integral component (255 = 100%)
minimum component (255 = 100%)
control output (255 = 100%)
SLAVE Mode 2
5%
50%
95%
100%
100%
Fig. 6.g
JA on
input for pressure/temperature probes
JB off
JA off
0/10V input
JB on
description
Control mode
Type of probe B1
18
diff
MAX
setp
100%
MAX
0=disabled
0=standard control;
1=slave mode 1
2=slave mode 2
3=slave mode 3
0 = NTC-10kΩ
1 = NTC-50kΩ
2 = ratiometric 0/5V
FCP manual
1=enabled
Table 6.a.u
Table 6.a.v
Table 6.a.z
3 = 0/10V
Table 6.b.a
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