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4
Trial Operation Check
Before starting trial operation
Turn on the power of the Digital Input/Output Relay Interface after all cable connections and settings are
completed. Turn on power of the air conditioning control system.
Trial operation
• Confirming external input connection
In the test mode, when the external inputs connected to the input terminals DI-1 to DI-8 are ON, the
respective LEDs will goes on so you can confirm the connection.
Confirming procedure:
Set the operation mode switch SW2 to "3", and push the reset switch SW7 to enter the test mode.
Unless SW4 is pushed, the respective input status of DI-1 to DI-4 is indicated by LED2 to LED5.
When SW4 is pushed, the respective input status of DI-5 to DI-8 is indicated by LED2 to LED5.
(*) To return to the normal operation, reset SW2 to "zero (0)" and push SW7.
LED2
SW4 OFF
Displays DI-1 input
status.
SW4 ON
Displays DI-5 input
status.
• Checking external output connection
In the test mode, you can set output terminals DO1 to DO4 to ON or OFF with the test switch. Their
output status is indicated by each LED.
Checking procedure:
Set the operation mode switch SW2 to "3" in the same way as the external input check, and then
push the reset switch SW7 to enter the test mode.
When the bit of the test switch SW3 is set to ON, the external output turns ON; when set to OFF,
the external output turns OFF.
Bits 1 to 4 of SW3 correspond to output terminals DO1 to DO4.
The respective output status of output terminals DO1 to DO4 is indicated by LED14 to LED17.
The LEDs light with the output ON, and goes off with the output OFF.
(*)To return to normal operation, reset SW2 to "zero (0)" and push SW7.
LED14
Displays DO1 output
status.
Output ON: LED lights
Output OFF: LED turns off
• Checking the RS-485 communication status
Use LED2 for checking the RS-485 communication status.
When RS-485 communication with Touch Screen Controller is normal, LED2 will blink.
LED1
Power indicator
LED2
RS-485 communication
status indicator
LED3
Not used
LED4
Test indicator
LED5
Test indicator
LED3
Displays DI-2 input
status.
Displays DI-6 input
status.
Input ON: LED lights
Input OFF: LED turns off
LED15
LED16
Displays DO2 output
Displays DO3 output
status.
status.
Normal
ON
Blinking
OFF
OFF
OFF
LED4
Displays DI-3 input
status.
Displays DI-7 input
status.
LED17
Displays DO4 output
status.
Abnormal
OFF
OFF
—
—
—
9
LED5
Displays DI-4 input
status.
Displays DI-8 input
status.
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