Vaisala PTB330 Manuel d'utilisateur télécharger pdf (Page 42)

USER'S GUIDE____________________________________________________________________

40 __________________________________________________________________ M210855EN-D

Relay Module RELAY-1L

The barometer can be equipped with one configurable relay module.

The module contains two configurable relays.

NOTE

The relay module is only intended for DC use.

Installation and Wiring

To install relay module RELAY-1L:

1. Disconnect the power and open the barometer cover. If the

relay-module is installed in the factory, continue with step 5.

2. To attach the module, first place a protective plate to the bottom

of the housing at module slot 3, then fasten the relay module to

the top of the plate with four screws. See the position in Figure

2, on page 16.

3. When the mains power is in use attach the grounding wire to the

grounding terminal.

Connect the flat cable between the relay module and the

MODULE 3 pins of the motherboard.

5. Take out the protective plug from the cable gland and thread the

relay wires.

6. Connect the wires to the screw terminals: NO, C, NC. See

section Selecting the Activation State of the Relay on page 41.

7. Connect the power and close the cover.

8. If you are replacing an existi

ng module, the installation is

complete. If you are adding a new module, continue to the next

step.

9. Connect to the service port, and execute the MODS command to

10. Switch the power off and back on again to clear related errors

and to activate the changes.

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Vaisala PTB330 Manuel d'utilisateur Page 42