Vaisala MMT330 - Manual (Page 126)

User's Guide _______________________________________________________________________
126 __________________________________________________________________ M210764EN-F
Example of using relay 1 as fault alarm: Selecting relay 1 to follow the
fault status and relay 2 to follow the temperature measurement.
>rsel fault t
Rel1 FAUL above: -
Rel1 FAUL below: -
Rel1 FAUL hyst : -
Rel1 FAUL enabl: ON ?
Rel2 T above: 0.00 'C ? 30
Rel2 T below: 0.00 'C ? -
Rel2 T hyst : 0.00 'C ? 2
Rel2 T enabl: OFF ? ON
>
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
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.