Vaisala DRYCAP DMT346 Guía de usuario Pagina 48

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User's Guide _______________________________________________________________________
46 ___________________________________________________________________ M210762EN-A
0605-031
Figure 29 Galvanic Output Isolation Module
Alarm Relays
DMT346 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 131.
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 19.
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.
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