TCY3-T0121R Engineering Manual
Doc: 70-000002 V1.0, 20101115
© Vector Controls GmbH, Switzerland
Page 11
Subject to alteration
Control Functions
Lp1: Temperature control loop:
Signal input: either internal or external passive temperature probe
Lp2: Universal control loop:
Signal input: analog input or internal humidity sensor (-H version only)
Each control loop may utilize 6 binary
and
2 PID control sequence functions. Control sequences will be activated once
assigned to a physical or logical output.
Manipulation of the set point
Standby set point shift X
SBY
: This function shifts the set point while the operation mode is standby. The heating set
point W
H
is reduced and the cooling set point W
C
increased by the value of the standby set point shift X
SBY
.
Dead Zone Span X
DZ
: The dead zone span lies between the heating and the cooling set point.
Minimum and Maximum Set Point Limits
: Limits the adjustable range of the loop set point. The limits for heating and
cooling sequence may be chosen individually.
Cascade Control
: The output of the primary control loop determines the set point of the secondary control loop. It is
possible to choose only the direct or reverse sequence or both of them. The output of the set point providing control loop
is spanned between the minimum and maximum set point limits. The set point limits for heating and cooling sequence are
defined individually.
Summer – Winter Compensation:
Shift the set point either towards the set point minimum (negative shift) or the set
point maximum (positive shift) depending on an external input signal. This is done to compensate the set point due to a
change in the environment. It is most commonly applied to outside temperature. Summer-Winter compensation is
activated through parameter
1L07
or
2L07
.
IP22
selects the compensation input signal, either external temperature or analog input.
The winter compensation is active when the outside temperature drops below the upper limit of winter compensation
IP25
. Depending on parameter
IP23
, the setpoint is now shifted towards the heating setpoint minimum or maximum.
The maximal compensation is reached when the temperature reaches the lower limit
IP24
. The actual set point will in this
case be equal to the minimum heating set point limit for a negative shift or the maximum set point limit for a positive
shift.
The summer compensation is active when the outside temperature exceeds the lower limit for summer compensation
IP27
. Depending on parameter
IP26
, the setpoint is now shifted towards the cooling setpoint minimum or maximum. It
reaches its maximum when the temperature equals the upper limit
IP28
.
Example:
Summer – Winter compensation active in loop 1.
1L07
= 3
Winter Compensation
Summer Compensation
1L02
T [°C, F]
U [V, mA]
IP24
IP23 = ON
IP25
1L01
IP23 = OFF
Setpoint
IP26 = ON
1L04
IP27
IP28
W
1L03
IP26 = OFF
