ero electronic TMS - Control Actions; Control Outputs

22
GBGB
GBGB
GB
CONTROL ACTIONSCONTROL ACTIONS
CONTROL ACTIONSCONTROL ACTIONS
CONTROL ACTIONS
Control actionsControl actions
Control actionsControl actions
Control actions: PID + SMART
Proportional bandProportional band
Proportional bandProportional band
Proportional band: from 1.0 % (for heating
action) or 1.5 % (for heating and cooling action)
to 99.9 % of the input span.
Setting Pb = 0 an ON/OFF control is performed.
Hysteresis Hysteresis
Hysteresis Hysteresis
Hysteresis (for ON/OFF control action): from 0.1
% to 10.0 % of the input span.
Integral timeIntegral time
Integral timeIntegral time
Integral time: from 10 seconds to 20 minutes;
resolution 10 second. Setting a value upper than
20 minutes the integral action will be excluded.
Derivative timeDerivative time
Derivative timeDerivative time
Derivative time: from 0 to 9' 59''.
Integral preload:Integral preload:
Integral preload:Integral preload:
Integral preload:
- from 0 to 100% for one control output.
- from -100 to 100% for two control outputs
Main output cycle timeMain output cycle time
Main output cycle timeMain output cycle time
Main output cycle time: from 1 to 200 s.
Cooling cycle timeCooling cycle time
Cooling cycle timeCooling cycle time
Cooling cycle time: from 1 to 200 s
Relative cooling gainRelative cooling gain
Relative cooling gainRelative cooling gain
Relative cooling gain: from 0.20 to 1.00
NOTENOTE
NOTENOTE
NOTE: the Pb, ti, td and rCG parameter may be
limited when the SMART function is enabled.
Overlapping/dead bandOverlapping/dead band
Overlapping/dead bandOverlapping/dead band
Overlapping/dead band: from - 20 % to 50 %
CONTROL OUTPUTSCONTROL OUTPUTS
CONTROL OUTPUTSCONTROL OUTPUTS
CONTROL OUTPUTS
Type: Type:
Type: Type:
Type: time proportioning
Output updating timeOutput updating time
Output updating timeOutput updating time
Output updating time: 500 ms.
Output resolutionOutput resolution
Output resolutionOutput resolution
Output resolution: 1% of the output span.
ActionAction
ActionAction
Action: direct or reverse programmable.
Output power limiterOutput power limiter
Output power limiterOutput power limiter
Output power limiter:
- from 0.0 to 100.0 % for one control output.
- from -100.0 to +100.0% for two control outputs
This function may be operative at instrument power
up for a programmable time (to avoid thermal shock
or to pre-heat the plant).
B) RTDB) RTD
B) RTDB) RTD
B) RTD (
RR
RR
Resistance
TT
TT
Temperature
DD
DD
Detector)
TypeType
TypeType
Type: Pt 100 3 wires connection.
CurrentCurrent
CurrentCurrent
Current: 135 µA.
Line resistanceLine resistance
Line resistanceLine resistance
Line resistance: automatic compensation up to
20 Ω/wire with :
- error <
+0.1% of the input span for range -19.9 a
99.9 °C.
- not measurable error for the other ranges.
Engineering unitsEngineering units
Engineering unitsEngineering units
Engineering units: °C or °F programmable.
BurnoutBurnout
BurnoutBurnout
Burnout: up scale.
NOTENOTE
NOTENOTE
NOTE: a special test is
provided to signal OVERRANGE when input
resistance is less than 15 Ω.
CalibrationCalibration
CalibrationCalibration
Calibration: according to DIN 43760.
STANDARD RANGE TABLE
C) CURRENT TRANSFORMER INPUTC) CURRENT TRANSFORMER INPUT
C) CURRENT TRANSFORMER INPUTC) CURRENT TRANSFORMER INPUT
C) CURRENT TRANSFORMER INPUT
Input currentInput current
Input currentInput current
Input current: 50 mA AC.
Read-outRead-out
Read-outRead-out
Read-out: selectable among 10, 25, 50 or 100 A.
ResolutionResolution
ResolutionResolution
Resolution:
- 0.1 A for 10 A range.
- 1 A for all the other ranges.
Active periodActive period
Active periodActive period
Active period:
- for relay output: NO or NC programmable
- for SSR drive output: logic level 1 or 0
programmable.
Minimum time duration of the active periodMinimum time duration of the active period
Minimum time duration of the active periodMinimum time duration of the active period
Minimum time duration of the active period:
50 ms.
RTDRTD
RTDRTD
RTD
TypeType
TypeType
Type
RTD Pt 100
RTD Pt 100
-199 - +500 °C
-19.9 - +99.9 °C
Measuring rangeMeasuring range
Measuring rangeMeasuring range
Measuring range
-199 - +999 °F
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