Vaisala PTU300 User's Guide Page 38

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USER'S GUIDE____________________________________________________________________
36 __________________________________________________________________ M210796EN-E
Signal and Power Supply Wiring
When wiring the power supply module, see section Power Supply
Module on page 44.
0506-028
Figure 20 Screw Terminal Block on Motherboard
Numbers refer to Figure 20 above:
1 = Power supply terminals 10 ... 35 VDC, 24 VAC
2 = User port (RS-232 terminals)
3 = Analog signal terminals
WARNING
Make sure that you connect only de-energized wires.
1. Open the transmitter cover by taking out the four cover screws.
2. Insert the power supply wires and signal wires through the cable
bushing in the bottom of the transmitter; see the grounding
instructions in the previous sections.
3. Connect the analog output cables to terminals: Ch1 +, Ch1-, Ch2+,
Ch2-. Connect the RS-232 user port cables to terminals RxD, GND
and TxD. For more information about the RS-232 connection refer
to section Serial Line Communication on page 73.
4. When wiring the optional m
odules, see the corresponding section
for instructions:
- RS-422/485 Interface on page 53
- Relays on page 51
- Third Analog Output on page 49
- LAN Interface on page 56
- WLAN Interface on page 57
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