TCY3-T0121R Engineering Manual
Doc: 70-000002 V1.0, 20101115
© Vector Controls GmbH, Switzerland
Page 13
Subject to alteration
Binary Control
Each loop has three reverse- (heating) and three direct- (cooling) acting binary sequences. The offset to the setpoint is
adjustable for each sequence. The switching hysteresis is adjustable per control loop.
Action of stages:
The stages may be activated according three different patterns:
One at the time:
Only one stage is active at the time. The lower stage will be switched off when the higher stage gets
active. Example: fan speed control.
Cumulative:
Multiple stages are active at the same time: The lower stage stays activated when the higher stage
switches on. Example: Electrical heating stages
Binary coded:
In the first step only the first stage is active; in the second step only the second stage. In the third
step both stage 1 and stage 2 are switched on. This is used for heating stages. The size of the
second heating stage should be doubled the size of the first heating stage. For example 100W for the
first stage and 200W for the second stage. With two outputs we could create the following steps: 1.
Step 100W, 2. step 200W, 3. step 300W.
Action
Stage 1
Stage 2
Stage 3
One at the time
Q
1
Q
2
Cumulative Q
1
Q
1
+Q
2
Binary coded
Q
1
Q
2
Q
1
+Q
2
Binary Control
Legend
:
T, U
Input Signal
O
QH
Offset Heating, Direct
O
QC
Offset Cooling, Reverse
X
H
Switching
Hysteresis
X
DZ
Dead zone
X
SBY
Standby set point shift
W
H
Set point Heating, Reverse
W
C
Set point Cooling, Direct
Q
C
, Q
D
Binary Output Stage Cooling, Direct
Q
H
, Q
R
Binary Output Stage Heating, Reverse
Switching Hysteresis
: Defines the difference between switching on and switching off of a digital sequence. A small
hysteresis will increase the number of switching cycles and thus the wear on associated equipment.
Delayed switching
. Cumulative Heating/ cooling stages will not switch simultaneously with stage 1, in case of a sudden
demand or at power on. Stage 2 will not start earlier than 5 seconds after stage 1 has been initiated.
Input Configuration
General
Alarms
: Each input features low and high limit alarms. Each alarm is defined with a limit, a hysteresis and an enable
parameter. The limit specifies the input signal level required to trigger the alarm. The hysteresis defines the difference
between input signal and limit required to return the alarm state to normal. Once an alarm is triggered it will be displayed
as ALA1, ALA2, ALA3 and ALA4. Each alarm needs to be acknowledged by pressing the RIGHT key.
ALA1 = Lower limit of the input signal of control loop 1 (temperature) has been reached
ALA2 = Upper limit of the input signal of control loop 1 (temperature) has been reached
ALA3 = Lower limit of the input signal of control loop 2 (universal) has been reached
ALA4 = Upper limit of the input signal of control loop 2 (universal) has been reached
Averaging function
: Averaging function is used to prevent unwanted fluctuation of sensor signals. The controller
measures every second the signal inputs. The input signal is now built over a number of measured values. Select how
many values should be used to calculate the averaging signal. Control speed will slow down when a large number of
samples are used for an averaging signal. This should be taken into account when defining the control parameters.
Compensation
: Adjust input values if required
ON
OFF
T [°C, F]
U [V, mA]
Q
C2,
Q
D2
W
C
O
SH
W
H
X
DZ
O
SC
X
H
Q
C1,
Q
D1
Q
H2,
Q
R2
