Vaisala DRYCAP DMT340 SERIES Guia do Utilizador descarregar pdf (Página 60)

USER'S GUIDE____________________________________________________________________

60 __________________________________________________________________ M210704EN-E

0508-029

Figure 39 Third analog output selection

8. Connect the power.

9. Select the quantity and scale the channel via the serial line or

display/keypad, see section Analog Output Quantities on page 116.

For testing the analog output, see section Analog Output Tests on

page 118. For fault indication setting, see section Analog Output

Fault Indication Setting on page 119.

Alarm Relays

DMT340 can be equipped with one or two configurable relay modules.

Each module contains two configurable relays. See the contact ratings in

section Technical Specifications of Optional Modules on page 156.

Installation and Wiring

1. Disconnect the power. In case the relay-module is installed in the

factory, continue with the step 5.

2. To attach the module, open the transmitter cover and fasten the

relay module to the bottom of the housing with four screws. See the

position in Figure 2 on page 22.

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

grounding terminal.

4. Connect the flat cable between the relay module and the

motherboard's pins MODULE 2 or MODULE 1.

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.

CAUTION

For installations in the USA: If your transmitter has both the relay

module and a LAN or WLAN module, the maximum voltage you are

allowed to connect to the relay module is 50 V.

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Vaisala DRYCAP DMT340 SERIES Guia do Utilizador Página 60