gefran GFXTERMO4 User Manual

44
880397M_MSW_GFX4-GFXTERMO4_08-2018_ENG
Control output with only proportional action in case of proportional
heating band separate from cooling band.
Control output with only proportional action in case of proportional
heating band superimposed on cooling band.
Output with separate band Output with superimposed band
Heat/cool control with separate or superimposed band
Heat/cool control with relative gain
This control mode (enabled with parameter Ctr = 14) asks you to specify cooling type. The PID cooling parameters are then cal-
culated based on heating parameters in the ratio specified (ex: C.ME = 1 (oil), H_Pb = 10, H_dt =1, H_It = 4 implies: C_Pb = 12.5, C_dt = 1
, C_It = 4)
Apply the following values when setting cycle times:
Air T Cool cycle = 10 sec.
Oil T Cool cycle = 4 sec.
Water T Cool cycle = 2 sec.
NB.: Cool parameters cannot be changed in this mode.
180
(tr
R/W
Control type
134
Table of heat/cool controls
Select sample time for derivative action.
+0 sample 1 sec.
+16 sample 4 sec.
+32 sample 8 sec.
+64 sample 240 msec.
+128 No Reset of integral component at setpoint change
Note: the LBA alarm is not enabled in the ON/OFF control.
Val Control type
0 P heat
1 P cool
2 P heat / cool
3 PI heat
4 PI cool
5 PI heat / cool
6 PID heat
7 PID cool
8 PID heat / cool
9 ON-OFF heat
10 ON-OFF cool
11 ON-OFF heat / cool
12 PID heat + ON-OFF cool
13 ON-OFF heat + PID cool
14 PID heat + cool with relative gain (see parameter C.ME)
PID Parameters
PV = process variable
SP + cSP = cooling setpoint
c_Pb = cooling proportional band
Time
PV
c_Pb
h_Pb
SP+cSP
SP
+100%
Control output
0%
-100%
Time
PV
c_Pb
h_Pb
SP+cSP
SP
+100%
Control output
0%
-100%
PV = process variable
SP = heating setpoint
h_Pb = heating proportional band
WARNING: the Control ( “Ctr”) default parameter changed
from “6” to “134” starting from products with serial
number “SN 1013A1965” ( March 2010).
The option “+128”, used to disable the “Integral power reset” has
been introduced as an improvement, starting from the Software
version “1.43”.
We strongly suggest to verify the eventual recipes created with
Software versions before the 1.43, because, if the parameter
“Ctr” is included in the recipe, it could be congured in an unde-
sirable way.
617
spu
R/W
Selection of process variable of zone /
Zone reference power
1 PV zone 1
2 PV zone 2
3 PV zone 3
4 PV zone 4
9 POWER zone 1 (*)
10 POWER zone 2 (*)
11 POWER zone 3 (*)
12 POWER zone 4 (*)
Table of selections
(*):
- The reference power of a slave zone in automatic mode is the power of a master
zone in automatic or manual mode.
- The reference power of a slave zone in manual mode is the zone manual power.
- Software shutdown remains independent for each zone.
1
zone 1
2
zone 2
3
zone 3
4
zone 4

gefran GFXTERMO4 Specifications

General

Brand	gefran
Model	GFXTERMO4
Category	Controller
Language	English