Temperature PID controller TCY-MT-U
Temperature PID controller TCY- MT-U
Temperature PID controller TCY- MT-U
Doc: 70-00-0177-20, V1.2 20160119
© Vector Controls GmbH, Switzerland
Subject to alterations
Configuration parameters for firmware version 1.2
The TCY-MT-U is preset to work for most applications. For special requirements it can be fine tuned to work
ideal with a simple parameter setup routine. The parameters can be changed on the unit without the need of
additional equipment.
Identifying the firmware version
The parameters and functionality of controller depend on its firmware version and revision. It is therefore
important to use a matching product version and parameter set. The Firmware version and revision version
can be found when pressing simultaneously the
and
keys during several seconds. On the upper 7
segment display, the firmware version can be found, on the lower 7 segment display the current revision
index (or “sub-version”).
Setting of user parameters
The TCY-MT-U can be adapted to fit perfectly into your application. The control operation is defined by
parameters. The parameters are set during operation by using the control buttons.
The parameters may only be accessed by entering a code. There are two levels of parameters: User
operation parameters for access control settings, and Expert parameters for control functions and unit setup.
The codes for user levels and expert levels are different. Only control experts should be given the control
parameter code.
The parameters can be changed as follows:
1.
Press UP and DOWN button simultaneously for three seconds. The display shows the software
version in the large digits and the product code in the small digits.
2.
Pressing the OPTION button will indicate CODE on the small digits and 000 on the large digits.
3.
The code for accessing the user parameters is 009
4.
Select this using UP or DOWN buttons.
5.
Press OPTION button after selecting the correct code.
6.
Once logged in, the parameter is displayed immediately.
7.
Select the parameters with the UP/DOWN buttons. Change a parameter by pressing the OPTION
button. Three triangles will show up on the lower right and indicate that the parameter may be
modified now. Use UP or DOWN buttons to adjust the value.
8.
After you are done, press OPTION or POWER in order to return to the parameter selection level.
Press the POWER button again so as to leave the menu. The unit will return to normal operation if no button
is pressed for more than 5 minutes.
User parameters (Password 09)
Parameter Description
Range
Default
UP 00
Enable access to operation modes
ON, OFF
ON
UP 01
Enable access to set points
ON, OFF
ON
UP 02
Not used
ON, OFF
OFF
UP 03
Enable manual change of Heating/Cooling Mode.
No influence on TCY-MT2-U-W01 (cooling only) or
TCY-MT2-U-W02 (heating only)
ON, OFF
TCY-MT2-W01: OFF
TCY-MT2-W02: OFF
TCY-MT2:
ON
TCY-MT4:
ON
UP 04
Not used
ON, OFF
OFF
UP 05
State after power failure:
0 = off, 1 = on, 2 = state before power failure
0, 1, 2
2
UP 06
Enable Economy (unoccupied) Mode.
Shift the set point to a lower temperature in winter or
higher temperature in summer in order to save energy.
May be activated through the POWER button, or with
the external input (typically for key card switches in hotel
rooms or motion detectors for meeting rooms.)
ON, OFF
ON
UP 07
ON = Fahrenheit, OFF = Celsius
ON, OFF
OFF (Celsius)
UP 08
Calibrate internal temperature sensor
–10° to +10° in 0.1° steps. (Sensor is factory calibrated;
use this feature for field adjustment only as required.)
-
10…10
0
UP 09
Enable Frost Protection.
Activates the output independent of operation mode
when the control temperature drops below 5°C or 41°F.
The controller returns to normal operation when the
temperature increases above 10°C or 50°F.
ON, OFF
TCY-MT2-W01: OFF
TCY-MT2-W02: ON
TCY-MT2:
ON
TCY-MT4:
ON
Control parameters (Access code: 241)
Warning! Only experts should change these settings! See user parameters for login procedure.
Parameter
Description
Range
Default
CP 00
Minimum set point limit in Heating mode
0…60°C (32..160°F)
16°C (61°F)
CP 01
Maximum set point limit in Heating mode
0…60°C (32..160°F)
30°C (86°F)
CP 02
Minimum set point limit in Cooling mode
0…60°C (32..160°F)
18°C (65°F)
CP 03
Maximum set point limit in Cooling mode
0…60°C (32..160°F)
30°C (86°F)
Controls configuration
CP 04
Economy (unoccupied) Mode temperature shift:
The comfort (occupied) set point is shifted by the value set
with parameter. If heating is active the comfort set point will
be decreased, if cooling is active, the set point will be
increased. (Enable with UP06.)
0…100°C (200°F)
5.0°C (10°F)
CP 05
Dead Zone Span (TCY-MT4-U only):
The Dead Zone Span lies between the heating and the
cooling set point. The output is off while the temperature is
within the dead zone span. A negative dead zone is not
possible.
0…100°C (200°F)
1.0°C (2°F)
CP 06
Heat/Cool Changeover Delay (TCY-MT4-U only):
A demand to switch between heating and cooling must
persist for the length of time set with this parameter before
the controller switches. Prevents activation of a sequence
during a short-term change in temperature in order to
protect equipment (with control overshoot for example)
0…255 min
5 min
CP 07
P-band heating X
PH
0…100°C (200°F)
2.0°C (4.0°F)
CP 08
P-band cooling X
PC
0…100°C (200°F)
2.0°C (4.0°F)
CP 09
K
IH
, Integral gain heating, in 0.1 steps, (TI is fixed to 4s)
0 disables ID part
low value = slow reaction
high value = fast reaction
0…25.5
0.0
CP 10
K
IC
, Integral gain cooling, in 0.1 steps, 0 disables I part
0…25.5
0.0
CP 11
Configuration of operation mode
0 = TCY-MT2-U-W01 = Cooling mode Y
C1
1 = TCY-MT2-U-W02 = Heating mode: Y
H1
2 = TCY-MT2-U = Heating and Cooling (2 pipe system)
3 = TCY-MT4-U = Heating and Cooling (4 pipe system)
TCY-MT2: 0 - 2
TCY-MT4: 0
– 3
TCY-MT2-W01: 0
TCY-MT2-W02: 1
TCY-MT2:
2
TCY-MT4:
3
Proportional control (P-band)
The proportional control function calculates the output based on the difference between set point and
measured value. The proportional band (P-band) defines the difference between set point and measured
value which will result in a 100% output. For example, with a heating or reverse 0-10v control sequence, and
a 2.0°C (4.0°F) P-band value, at 10v the controller will be 2.0°C (4.0°F) below set point. This is the working
range of the proportional control sequence.
Setting the proportional band to 0 disables proportional control.
Integral and differential control
Proportional control is a very stable control mode. The flaw of proportional control alone, however, is that the
set point is normally not reached. As the measured value gets closer to the set point, the output reduces
until it reaches a point, a fraction above or below the set point, where the output equals the load. To reach
the set point and achieve a higher level in comfort the Integral/Differential function should be activated.
Integral Gain (KI)
dynamically increases the output by the selected KI value until the set point is reached.
The challenge, however, is to prevent hunting, where the output increases too fast, the temperature
overshoots the set point, the output goes to 0, the temperature undershoots the set point, and the cycle
repeats itself. Hunting may result if the integral gain is too high. Each system is different. It is recommended
to start with a KI value of 0.5 for water based systems and 1.0 for air based systems. Reduce this value if
the measured value overshoots the set point by more than 1°C (2°F). Increase the value if the output takes
too long to reach the set point. Air based systems react faster than water based systems.
Setting the integral gain to 0 disables integral and differential control.
Output configuration
Parameter
Description
Range
Default
CP 12
Manual Override Mode:
Allows manual control of the analog outputs for using the
controller as positioned, or during commissioning.
ON, OFF
OFF
CP 13
Min output for AO1 (TCY-MT4-U = heating output)
0
– 100 %
20%
CP 14
Max output for AO1 (TCY-MT4-U = heating output)
0
– 100 %
100%
CP 15
Min output for AO2 (TCY-MT4-U = cooling output)
0
– 100 %
20%
CP 16
Max output for AO2 (TCY-MT4-U = cooling output)
0
– 100 %
100%
CP 17
Maximum Output in Economy (unoccupied)Mode
Reduces the load on the system when is the space is
unoccupied.
0
– 100 %
50%
Input configuration
CP 18
Configuration of remote control input (X1)
0 = Control input if temperature sensor connected
1 = Occupation sensor
– Comfort / Standby
2 = Remote enable
– Comfort / OFF
3 = Keycard function: fixed set point
0…3
0
CP 19
Activation delay (Minutes) = the time the binary input needs
to be open before standby/off mode is activated.
0…255 min
5
CP 20
Fixed set point for key card function in heating mode
0…60°C
(32..160°F)
17°C (63°F)
CP 21
Fixed set point for key card function in cooling mode
0…60°C
(32..160°F)
27°C (81°F)
CP 22
For TCY-MT2-U only: Enable Auto changeover
ON, OFF
OFF
CP 23
For TCY-MT2-U only: Auto-changeover limit heating
0…60°C
(32..160°F)
30°C (86°F)
CP 24
For TCY-MT2-U only: Auto changeover limit cooling
0…60°C
(32..160°F)
15°C (59°F)
Configuring the function of the external input X1
The external input X1 may be configured for several functions:
CP18 = 0
External control
input
The control input is provided by the external input. The
internal input will not be used.
CP18 = 1
Switching Economy
and Comfort modes
Economy (unoccupied) and Comfort (occupied) modes
are controlled through an external contact by connecting
X1 through a dry contact to signal common. This function
may be used together with key card switches for hotels or
motion detectors for offices.
CP18 = 2
Switching Energy
Hold OFF and
Comfort modes
Opening the external temperature input will force the unit
into the OFF operation mode. The operation mode cannot
be overridden by using the terminal. Connecting the
binary input to GND returns control of the operation mode
to the terminal. This function may be used as window
contact to prevent loss of energy.
CP18 = 3
Key card function
As with CP18 = 1, the key card function switches
economy (unoccupied) and comfort (occupied) modes.
Instead of using the set point shift, the set points in
unoccupied mode are defined by parameter CP20 and
CP21.
CP18 = 4
Output enable
This may be used for a dew point sensor input. Output will
switch off if contact opens.
Configuring auto changeover input X2 (TCY-MT2-U only):
The auto changeover function automatically changes heating and cooling mode based on supply
media temperature or outdoor temperature. The difference between the two is in the values of the
changeover limits CP23 and CP24. See table below for recommended settings.
Heating and cooling may be as well changed by an open contact switched to signal ground. Note: all
signal ground levels of involved controllers must be the same in case more than one controller is
switched.
Recommended settings for CP23 and CP24:
Change over mode
Relation CP23 to
CP24
Example
CP23
Example:
CP24
Supply media
CP23 > CP24
25°C (77F)
18°C (64F)
Outside temperature
CP23 < CP24
15°C (59F)
25°C (77F)
Dry contact: Heating if contact closed
CP23 > CP24
25°C (77F)
15°C (59F)
Dry contact: Cooling if contact closed
CP23 < CP24
15°C (59F)
25°C (77F)
