Control Actions; Outs - Eliwell EWTQ925 Bedienungsanleitung

TABLE OF STANDARD RANGES
Type of Type of Type of Type of Type of
Measuring spans Measuring spans Measuring spans Measuring spans Measuring spans
T C T C T C T C T C
I
n brackets the data of the single display model
L L L L L
0 / +999 (1652) °F
J J J J J
0 / +999 (1832) °F
K K K K K
0 / +999 (2498) °F
N N N N N
0 / +999 (2552) °F
T T T T T
0 / +752 °F
B) RTD 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
Type Type Type: Pt 100 3 wire connection. Type Type
Current Current: 135 µA. Current
Current Current
Line resistance Line resistance Line resistance: automatic compensation up to Line resistance Line resistance
20 Ω/wire with :
- error <+1% of the input span when P1 = 5.
- not measurable error for the other spans.
Engineering units Engineering units Engineering units Engineering units: °C or °F programmable. Engineering units
Burn-out Burn-out Burn-out Burn-out: up range. Burn-out
NOTE NOTE NOTE: A special test is provided to signal NOTE NOTE
OVERRANGE when input resistance is less than
15 Ω.
Calibration Calibration Calibration Calibration: according to DIN 43760. Calibration
TABLE OF STANDARD RANGES
R T D R T D R T D
R T D R T D
In brackets the data of the single display
t y p e t y p e t y p e
t y p e t y p e
RTD Pt 100
-199 / +800 °C
(-200 / +800°C)
RTD Pt 100
-19.9 / +99.9 °C
(-199.9 / +400.0°C)
0 / +900°C
0 / +999 (1000) °C
0 / +999 (1370) °C
0 / +999 (1400) °C
0 / +400 °C
Measuring span Measuring span
Measuring span Measuring span Measuring span
model
-199 / +999 °F
(-328 / +1472°F)
-
-
7 . 3

7 . 3 CONTROL ACTIONS

7 . 3 7 . 3 7 . 3 CONTROL ACTIONS CONTROL ACTIONS CONTROL ACTIONS CONTROL ACTIONS
Control actions Control actions
Control actions Control actions: PID or SMART Control actions
Proportional band: from 1.0 % (if just one Proportional band: Proportional band:
Proportional band: Proportional band:
control out is used) or 1.5 % (if two control outs
are used) to 99.9% (dual display model) 100%
(single display model) of the input span.
On setting Pb = 0 an ON/OFF control is performed.
Hysteresis Hysteresis
Hysteresis (for ON/OFF control): from 0.1% to Hysteresis Hysteresis
10.0% of the input span.
Integral time: Integral time: from 0.1" to 20' (dual display Integral time: Integral time: Integral time:
model): from 1" to 20' (single display model). If a
value of more than 20 minutes is set the integral
action is excluded.
Derivative time: from 0 to 9'59" (dual display Derivative time: Derivative time: Derivative time: Derivative time:
model): from 0 to 10'00" (single display model).
Integral Integral preload: preload:
Integral Integral Integral preload: preload: preload:
- from 0 to 100% for one control out.
- from -100 to 100% for two control outs.
Main out (out 1) cycle time: Main out (out 1) cycle time:
Main out (out 1) cycle time: from 1 to 200 s. Main out (out 1) cycle time: Main out (out 1) cycle time:
Cooling out (out 2) cycle time: from 1 to Cooling out (out 2) cycle time: Cooling out (out 2) cycle time:
Cooling out (out 2) cycle time: Cooling out (out 2) cycle time:
200 s.
Cooling action gain: from 0.20 to 1.00 Cooling action gain: Cooling action gain: Cooling action gain: Cooling action gain:
NOTE NOTE
NOTE NOTE: Parameters PB, TI, TD and RCG may be NOTE
limited when the SMART function is enabled.
Overlap/dead band: Overlap/dead band:
Overlap/dead band: from - 20 % to 50%. Overlap/dead band: Overlap/dead band:
7 . 4 O U T S 7 . 4 7 . 4 7 . 4 7 . 4 O U T S O U T S O U T S O U T S
OUT 1 (Heating): OUT 1 (Heating):
OUT 1 (Heating): OUT 1 (Heating): OUT 1 (Heating):
Relay out with SPDT contact;
a) Out contact 3A / 250 V AC on resistive load.
b) Logic voltage for solid state relay command.
Logic state 1:24 Vdc +20% @ 1mA,
Logic state 0: <0.5V
OUT 2 (Cooling or alarm 1) OUT 2 (Cooling or alarm 1)
OUT 2 (Cooling or alarm 1) OUT 2 (Cooling or alarm 1) OUT 2 (Cooling or alarm 1)
Relay out with SPST contact;
Out contact 2A/250V AC on resistive load.
G B G B G B G B G B
19
14V +20% @20 mA