4 - Operations
4.5PARAMETER
1st GROUP
The controller parameters have been organized in group, according to their functionality area.
#AIs.AL1p alarm threshold
The threshold is presented only if the controller have been configured with 2 alarms. ( Digit L of the configuration code assigned to 4 or 5)
#A2s.AL2p alarm threshold
The alarm occurrences handle the OP1 and OP2 outputs, in different ways, according to the configured types of alarms, as illustrated.
#p.b.Proportionalband
This parameter specifies the proportional band coefficient that multiplies the error (SP - PV)
#t.i.Integraltime
It is the integral time value, that
Sensor break or input disconnection
SensorVisualisation
T 
Absolute alarm (full scale)
On Active
Off high
On
Off
Active
low
hy |
|
|
low range | high range | |
Alarm threshold |
| |
Deviation alarm |
|
|
SP | On | Active |
| Off | high |
On |
| Active |
Off |
| |
| low | |
hy |
|
|
- low range | + high range | |
Alarm threshold |
|
|
Band alarm |
|
|
SP |
| OnActive |
|
| Off out |
On
Off
Active
in
hyhy
full scale | full scale |
alarm threshold
specifies the time required by the integral term to generate an output equivalent to the proportional term. When Off the integral term is not included in the control algorithm.
#t.d.Derivativetime
It is the derivative term coefficient that specifies the time required by the proportional term P to reach the level of D. When Off the derivative term is not included in the control algorithm.
#t.c.Control output cycle time
It’s the cycle time of the time proportioning control output. The PID control output is provided through the pulse width modulation of the digital waveform.
#O.C.Overshootcontrol
This parameter specifies the span of action of the overshoot control. Setting lower values (0.99
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