Control Outputs - ero electronic LDS Manuel De Service

B) RTD (R R R R R esistance T T T T T emperature D D D D D etector) B) RTD B) RTD B) RTD B) RTD
Type Type Type: Pt 100 3 wires connection.
Type Type
Current: 135 µA.
Current Current Current Current
Line resistance Line resistance Line resistance Line resistance: automatic compensation up to Line resistance
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 units Engineering units: °C or °F programmable. Engineering units Engineering units Engineering units
Burn-out: up scale. NOTE Burn-out Burn-out NOTE NOTE: a special test is NOTE
Burn-out Burn-out NOTE
provided to signal OVERRANGE when input
resistance is less than 15 Ω.
Calibration Calibration: according to DIN 43760 Calibration
Calibration Calibration
STANDARD RANGES TABLE
RTD RTD RTD RTD RTD
Measuring range Measuring range Measuring range Measuring range Measuring range
TYPE TYPE TYPE TYPE TYPE
RTD Pt 100 -199 - +500 °C -199 - +999 °F
RTD Pt 100 -19.9 - +99.9 °C
CONTROL ACTIONS CONTROL ACTIONS CONTROL ACTIONS CONTROL ACTIONS CONTROL ACTIONS
Control actions: PID + SMART Control actions Control actions
Control actions Control actions
Proportional band: from 1.0 % (for heating Proportional band Proportional band Proportional band Proportional band
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 (for ON/OFF control action): from 0.1 Hysteresis Hysteresis Hysteresis Hysteresis
% to 10.0 % of the input span.
Integral time Integral time Integral time Integral time: from 10 seconds to 20 minutes; Integral time
resolution 10 second. Setting a value upper than
20 minutes the integral action will be excluded.
Derivative time Derivative time Derivative time: from 0 to 9 minutes and 59 Derivative time Derivative time
seconds.
lxs-1-0f.pmd 18
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
(LHS only).
Heating cycle time: from 1 to 200 s. Heating cycle time Heating cycle time Heating cycle time Heating cycle time
Cooling cycle time Cooling cycle time Cooling cycle time: from 1 to 200 s (LHS only). Cooling cycle time Cooling cycle time
Relative cooling gain Relative cooling gain
Relative cooling gain: from 0.20 to 1.00 (LHS Relative cooling gain Relative cooling gain
only).
NOTE: the PB, TI, TD and RCG parameter may NOTE NOTE NOTE NOTE
be limited when the SMART function is enabled.
Overlapping/dead band: from - 20 % to 50 % Overlapping/dead band Overlapping/dead band Overlapping/dead band Overlapping/dead band
(LHS only)

CONTROL OUTPUTS

CONTROL OUTPUTS CONTROL OUTPUTS CONTROL OUTPUTS CONTROL OUTPUTS
OUTPUT 1 - heating: OUTPUT 1 - heating OUTPUT 1 - heating OUTPUT 1 - heating OUTPUT 1 - heating
a ) Relay output with SPDT contact;
contact rating 3A / 250 V ac on resistive load.
-----
b) Logic voltage for SSR drive.
Logic status 1: 24 V +20% @ 1 mA.
14 V +20% @ 20 mA
Logic status 0: <0.5 V
Output action Output action
Output action Output action: direct/reverse programmable (not Output action
available for LHS used for heating/cooling
control).
OUTPUT 2 - cooling OUTPUT 2 - cooling (LHS only) / alarm 1 OUTPUT 2 - cooling
OUTPUT 2 - cooling OUTPUT 2 - cooling
a ) Relay output with SPST contact;
contact rating 1A / 250 V ac on resistive load.
By internal jumper it is possible to select the
NC or NO contact.
GB GB GB GB GB 18
16/01/2004, 9.29
/ alarm 1 / alarm 1 / alarm 1
/ alarm 1