Testing operation of relays, Rtest – Vaisala HMT330 User Manual
Page 134
User's Guide _______________________________________________________________________
132 __________________________________________________________________ M210566EN-K
Testing Operation of Relays
Testing activates relays even if they are disabled.
Use the module push buttons to activate the relays. Press the REL 1 or
REL 2 button to activate the corresponding relay.
Relay is activated:
led is lit
Relay is not activated:
led is not lit
Use the display/keypad to test the operation of relays.
1.
Open the Main Menu by pressing any of the arrow buttons.
2.
Select System
, press the ►arrow button.
3.
Select Diagnostics
, press the ►arrow button.
4.
Select Relay tests
, press the ►arrow button.
5.
Select Invert relay 1... , press TEST. Now the selected relay
output is forced to opposite state. Press OK to return to normal
operation.
6.
Press EXIT to return to the basic display.
RTEST
Use the serial line command RTEST to test the operation of the relays.
RTEST [x1 x2 x3 x4]<cr>
where
x
=
ON/OFF
Example: Activate and then release all four relays.
>rtest on on on on
ON ON ON ON
>
>rtest off off off off
OFF OFF OFF OFF
>
Enter the command RTEST without parameters to stop testing.