Unit installation

60
Remote Monitoring through gateway
TESTING FEATURES
Some testing features are embedded in the software to consent a manual control of the board hardware.
To access the test mode and to change the kind of test it is used the dip switches (Ref. S1) on the NG3 board.
HARDWARE TEST MODE
To enter hardware test mode:
• switch board off
• set dip switch address to 7 (dip switch 1..3 ON; dip switch 4 OFF)
• switch board on
The board will act as a master with address #1, and the user interface is active to switch from one test mode to
the other.
There are 4 different hardware tests mode, and it is possible choose the test mode with <ON OFF> key:
1. RELAY ROTATION
• all relay will switch on and off with 1 second delay one after the other;
• analog output will swing from 0 to 10 V one after the other;
2. ALL RELAY ON
• all digital output relay are energized;
• analog output are at 10 V
3. INPUT -> OUTPUT
• digital input are copied on relay output (e.g. if D1 input is energized then Relay 1 contact O1C1 will be
closed and so on)
4. ANALOG INPUT
• The screen shows the values of Analog Input channels;
• The values are shown in the following order:
Second row: S1, D1, O1, ST1
Third row: S2, D2, O2, ST2
Fourth row: TAE, RH, TOUT, TIN
5. RTC TEST
• The screen shows the actual parameters of Real Time Clock (RTC)
6. HW KEY TEST
• The screen displays the information about the communication with HKEY external module
Site
Chiller unit #1
Chiller
controller
SB2
IS485
Modem
GSM
RS485
cable
• Alarm history
• Trends recording
• Real Time
Controllers
configuration
• Real time graphs
GSM and
Telephone net
GATEWAY
RS232
Chiller unit #2
Chiller
controller
SB2
IS485
Chiller unit #8
Chiller
controller
SB2
IS485
Modem
PC
Remote
monitoring
software
RS232