Hi-T2
Centralised controller
6
2
I/O RESOURCES
2.1
KEYBOARD PCB
2.1.1
LAYOUT
Figure 1. Layout.
2.1.2
TOUCH-SCREEN USE
The interface has a resistive touch-screen on the LCD with sensitive areas applied to the contextual content of the active screen.
It allows you to select items or perform functions with ease.
Do not exert too much pressure on the touch screen with your fingers and do not use a sharp object on the touch screen. Doing so
may damage the touch screen or cause it to malfunction.
It is advisable to exert weaker pressure and not to act too quickly on the screen and to become familiar with the use of the touch-
screen itself, well calibrating the touch of your fingertip on the sensitive areas of the screens.
Do not put the touch-screen in contact with other electrical devices. Electrostatic discharge may cause a malfunction.
2.1.3
DISPLAY
The display is a TFT LCD 16/9 format with a diagonal 4.3". The resolution is 480 x 272 pixels. The LCD is handled with 16bit colour
depth (65535 colours).
2.1.4
POWER SUPPLY
Description
Characteristics
ID
POWER SUPPLY 12VAC
12Vac (min. 10Vac – max. 14Vac)
2.1.5
ANALOGUE INPUTS
Description
Characteristics
ID
Room temperature
NTC probe, conversion range -20
°
C
÷
+100
°
C
Ambient humidity
0% - 90% at temperatures between -20°C and 60°C
2.1.6
SERIAL AND CONNECTIVITY
Description
Characteristics
ID
USB
USB Host (for mass storage plug) / connector type A
USB
RS485 isolate
Modbus Serial to chiller/heat pump and fan coils
TTL
Modbus serial TTL for future use
ETH
Ethernet port 10/100 BASE T for minimal web-server
2.2
CLOCK
There is a clock with backup battery.
INP. 12VAC
RS485
CHILLER AND FAN
COIL NETWORK
ISOLATED RS485
SUPERVISION
DIGITAL INP.