Vector TCI-W11 Series - Page 14

TCI-W11, TCI-W22 Universal Controller
CONTROL LOOP CONFIGURATION
Doc: 70-00-0158C, V2.0-20220523 © Vector Controls GmbH, Switzerland Page 14-22
Subject to alteration
Digital control sequence
Parameter
Description
Range
Default
1L 16
Action of stages:
0= cumulative: stage 1 stays on when 2 on comes on
1= single: stage 1 turns off when 2 on comes on
2= digital: stage 1 only, stage 2 only, then stage 1 plus 2
0–2
0
1L 17
Offset for heating/reverse binary sequences
per input
0.0°C (0.0°F)
1L 18
Offset for cooling/direct binary sequences
per input
0.0°C (0.0°F)
1L 19
Switching span heating
per input
1.0°C (2.0°F)
1L 20
Switching span cooling
per input
1.0°C (2.0°F)
1L 21
Switching hysteresis
per input
0.5°C (1.0°F)
1L 22
Switching delay
0–255s
10s
1L 23
Activation of reverse/direct (heat/cool) sequence
OFF= activates based on demand
ON = follows heat/cool state of controller: Set manually or by
auxiliary function (FU20-FU23)
ON/OFF
OFF
1L 24
Delay for heat /cool changeover when L23=OFF
0–255 min
5 min
➔ Cumulative stage action (L16=0) is typically used in electric heat applications, and single stage action (L16=1) in fan
speed applications. Digital stage action (L16=2) is especially useful in electric heat applications to generate three
steps with just two outputs. For example: Step 1=100W, step 2=200W, step 3=300W.
➔ Switching hysteresis (L21) is the difference between switching on and switching off. A small hysteresis will increase
the number of switching cycles and thus the wear on associated equipment.
➔ With switching delay (L22) cumulative stages will not switch on simultaneously. With a sudden demand or initial
power stage 2 will not start earlier than 10 seconds (default value) after stage 1 has been initiated.
Cumulative
Single
Digital
Stage 1
Q
1
Q
1
Q
1
Stage 2
Q
1
+Q
2
Q
2
Q
2
Stage 3
Q
1
+Q
2
ON
OFF
T [°C, °F]
U [V, mA]
Q
C2,
Q
D2
O
SH
W
H
O
SC
X
DZ
W
C
X
H
Q
C1,
Q
D1
Q
H2,
Q
R2
Legend
T, U Input signal
O
SH
Offset heating/direct
O
SC
Offset cooling/reverse
X
DZ
Dead zone
X
SBY
Economy set point shift
W
H
Set point heating/reverse
W
C
Set point cooling/direct
Q
C
, Q
D
Binary sequences cooling/direct
Q
H
, Q
R
Binary sequences heating/reverse