TCY3-T0121R Engineering Manual
Doc: 70-000002 V1.0, 20101115
© Vector Controls GmbH, Switzerland
Page 14
Subject to alteration
Temperature Input
Accuracy in Kelvin,
Temperature Inp
0.2
ut
0 50 100
T °C
The TCY3 includes an NTC-based passive temperature sensor. A sensor
of the same type can be connected as alternative control input or as
input for additional functions. The accuracy of the temperature input is
shown in the table to the right. Specified accuracy can only be
guaranteed by using a manufacturer approved temperature sensor. For
best results use Sxx-Tn10 sensors.
0.5
1.0
Choose the active temperature input (intern or extern) of control loop 1
with
IP00
.
Additional functions of the external temperature input:
Following additional functions are available, in case the external temperature input is not used as input for control loop 1.
Toggle of Standby and
Comfort operation modes
Standby and Comfort modes are controlled through an external contact by connecting
the external temperature input to ground
Activation Delay:
Defines the delay the binary contact has to be open before
standby mode is activated.
This function may be used together with key card switches for hotels or motion
detectors for offices.
Remote Enable
Opening the external temperature input will force the unit into the OFF operation
mode. The operation mode cannot be overridden by using the terminal or time
schedules. Connecting the external temperature input to GND returns control of the
operation mode to the terminal and time schedule. This function may be used as
window contact to prevent loss of energy.
Heat-cool changeover with
external switch
Control heat and cool setting of your controller from a central location by switching a
contact to GND. Note: all ground levels of involved controllers must be the same.
Choose if heat or cool is to be active when contact is open.
Auto changeover with media
temperature sensor
The external input may be used to automatically determine heating or cooling mode.
Connect a qualified passive sensor to the external input and measure the temperature
of the supply media. Heating or cooling mode are activated once the supply
temperature is above or below the respective limits. The limits may be defined in
software. Standard is 16°C (60°F) for cooling and 28°C (82°F) for heating.
Universal Input:
The analog input signals may be configured with a jumper to 0-10V, 0-5V and 4-20 mA. The jumper is
located on the front side of the power part. The drawing on the right indicates the jumper placement for each
signal type. The factory setting is 0-10 VDC. Only place the jumper vertically.
The range of the input signal can be specified in software by setting a minimum and a maximum limit. The
limits are in percent of the full range.
The display value of the input signal may be specified according to its measuring range. For example a
pressure sensor has a 4-20 mA output and a pressure range of 0 – 200 Pa. It is possible to transform the
input signal into a different dimension by setting the lower and upper measuring range limit according to the
features of the sensor device. In our example the display will read 100 for a 12 mA signal. Range values
below 100 will have a resolution of 0.5, below 50 of 0.2 and below 25 of 0.1.
Humidity Input (-H Version)
The TCY3-T0121R-H includes a capacitive-based humidity sensor with 3% accuracy. The sensor may be used as control
input, as feedback or display input. It will replace the analog input on loop 2, if configured as control input.
AI1
0…10V
0…20m
A
RT or c
o
n
tact
█
