Vaisala GMW20 - Handbuch (Seite 6)

User’s Guide_____________________________________________________ GMW20
4
Electrical Connections
See the requirements for the power supply in the Technical
Data section.
1. Connect the nominal 24 V supply on the PCB between the
terminals + and -. Connect the common wire to terminal 0
and the other wire either to terminal V (voltage output) or
to the terminal mA (current output).
2. Choose the current output with the jumper 0/4 mA
– 4 ... 20mA: jumper shorts the pins (default)
– 0 ... 20 mA: disconnect (do not discard) the jumper.
3. If the unit has an optional accessory (relay, display and
relay, LonWorks interface, or temperature module), follow
the procedure described in the applicable manuals before
repositioning the cover.
4. Reposition the cover.
Current
output
jumper
Power supply
terminals
Output signal
terminals
Figure 2 Jumper and Terminals
Connecting power wires to the output terminal can
seriously damage the product.