Relays are not available in transmitters that
are powered with Power over Ethernet
(PoE).
Wire the relay connections as normally
open (NO) or normally closed (NC). Use
the touchscreen or web interface to
configure the relay activation parameters.
For the M20×1.5 cable gland ordered
together with the transmitter from Vaisala,
the cable diameter is 5.0 … 8.0 mm
(0.20 … 0.31 in). Tightening torque for the
cable gland is 8 Nm.
Table 7 Output terminals for relay 1 and relay 2
Terminal Function Notes
COM Relay 1 or 2 common Terminals in PELV power supply version:
• Type: Screw terminals
• Max. wire size: 2.5 mm
2
(14 AWG)
Terminals in AC (mains) power supply
version:
• Type: Push-in spring connection
• Max. wire size: 1.5 mm
2
(16 AWG), solid
wires or ferrules recommended
NO Relay 1 or 2 normally open
NC Relay 1 or 2 normally closed
3.3.4 Analog output terminals and lead-through
Before connecting wires or cables, make sure that the transmitter is powered o.
Analog outputs are not available in transmitters that are powered with Power over Ethernet
(PoE).
Use the touchscreen or web interface to change the output mode (for example, 0 … 5 V or
4 … 20 mA) and scaling of the analog outputs.
Chapter 3 – Installation
39
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