ero electronic LDE - Control Actions

28
GB
Measuring span
In brackets the data of model LDE
RTD
type
RTD Pt 100
RTD Pt 100
-199 / +800 °C
(-200 / +800°C)
-19.9 / +99.9 °C
(-199.9 / +400.0°C)
-199 / +999 °F
(-328 / +1472°F)
-
-
Type of
TC
L
J
K
N
T
Measuring spans
0 / +999 (1652) °F
0 / +999 (1832) °F
0 / +999 (2498) °F
0 / +999 (2552) °F
0 / +752 °F
0 / +900°C
0 / +999 (1000) °C
0 / +999 (1370) °C
0 / +999 (1400) °C
0 / +400 °C
In brackets the data of model LDE
DIN 43710 - 1977 (TC L).
TABLE OF STANDARD RANGES
B) RTD (Resistance Temperature Detector)
Type: Pt 100 3 wire connection.
Current: 135 µA.
Line resistance: automatic compensation up to
20 Ω/wire with :
- error <+1% of the input span when P1 = 5.
- not measurable error for the other spans.
Engineering units: °C or °F programmable.
Burn-out: up range.
NOTE: A special test is provided to signal
OVERRANGE when input resistance is less than
12 Ω.
Calibration: according to DIN 43760.
TABLE OF STANDARD RANGES
C) Logic input
Type: external dry contact .
Sampling time: 300 ms.
Contact rating: 8 mA, 8 V DC.
NOTES:
1) The "OUT 3" and the "logic input" options are
mutually exclusive.
2) The logic input is NOT isolated by the
measuring input
7.3 CONTROL ACTIONS
Control actions: PID, ON(OFF or SMART
Proportional band: from 1.0 % (if just one control
out is used) or 1.5 % (if two control outs are used)
to 99.9% (LME) 100% (LDE) of the input span.
On setting Pb = 0 an ON/OFF control is
performed.
Hysteresis (for ON/OFF control): from 0.1% to
10.0% of the input span.
Integral time: from 0.1” to 20’ (LME): from 1” to
20’ (LDE). If a value of more than 20 minutes is
set the integral action is excluded.
Derivative time: from 0 to 9’59” (LME): from 0 to
10’00” (LDE).
Integral preload:
- from 0 to 100% for one control out.
- from -100 to 100% for two control outs.
Main out (out 1) cycle time: from 1 to 200 s.
Cooling out (out 2) cycle time: from 1 to 200 s.
Cooling action gain: from 0.20 to 1.00
NOTE: Parameters PB, TI, TD and RCG may be
limited when the SMART function is enabled.
Overlap/dead band: from - 20 % to 50%.
lxe-1-B00.p65 10/18/02, 3:47 PM28