Relay output terminals and lead-through - INDIGO520 - INDIGO500SERIES - INDIGO510

Indigo510, Indigo520 User Guide

Document code
English (United States)
Document type
User guide

Before connecting wires or cables, make sure that the transmitter is powered off.

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 1. 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 mm2 (14 AWG)
Terminals in AC (mains) power supply version:
  • Type: Push-in spring connection
  • Max. wire size: 1.5 mm2 (16 AWG), solid wires or ferrules recommended
NO Relay 1 or 2 normally open
NC Relay 1 or 2 normally closed