ascon G2 Series User Manual

24
4 - Operation
ALARM MENU
(see page 19)
PID MENU
Proportional Band
Cool Proportional
Band
This parameter specifies the propor-
tional band coefficient that multiplies
the error (SP - PV)
Integral
Time
Cool integral
Time
It is the integral time value, that spec-
ifies the time required by the integral
term to generate an output equiva-
lent to the proportional term
When Off the integral term is not
included in the control algorithm.
Derivative
Time
Cool Derivative
Time
It is the derivative term coefficient that
specifies the time required by the pro-
portional term P to reach the level of D.
When Off the derivative term is not
included in the control algorithm.
#t.d. C
àt.d.
#t.i. C
#t.i.
#p.b. C
#p.b.
Working Setpoint (SP) as com-
bination of Local Setpoint (SL)
and remote signal
Setpoint type
Loc.t
(table 3, page 18)
SP = SL + (rtio • REM)
+ biaS
Setpoint type reM.t
(table 3, page 18)
SP = REM + (rtio • SL)
+ biaS
SIGN = Remote signal
percentage
SPAN = HR-LR
REM =
SIGN * SPAN
100
Examples:
Local Setpoint (SL) with an external
Trim with multiplying coeff. of 1/10:
Setpoint type =
Loc.t
rtio
=0.1
biaS=0
Remote Setpoint (SR) with an inter-
nal Trim with multiplying coeff. of 1/5:
Setpoint type = reM.t
rtio
=0.2
biaS=0
Remote Setpoint range equal to the
Input range:
Setpoint type = Loc.t
rtio
=1
biaS=LR
SL =0
If SR starting point is lower then the
ending point, both expressed in engi-
neering units:
biaS= starting point = a
rtio=
Example:
biaS=20
rtio=
If SR starting point is higher then the
ending point, both expressed in engi-
neering units
biaS= starting point = a´
rtio=
Example:
biaS= 100
rtio=
20 - 100
600 - (-200)
- 80
800
= - 0.1=
b´ - a´
HR - LR
100 - 20
600 - (-200)
80
800
= 0.1=
b - a
HR - LR
M5 UK•ed4 10-12-2004 16:20 Pagina 24

ascon G2 Series Specifications

General

Brand	ascon
Model	G2 Series
Category	Controller
Language	English