Vaisala Indigo 500 Series - Introduction to Indigo 500 Series Transmitters; Indigo 520 Basic Features and Options

Wiring
Make sure that you prepare and connect only de-energized wires.WARNING!
• Hex key (4 mm) for opening the transmitter cover
• Open-ended spanners of sizes 17 mm, 19 mm, 22 mm and 24 mm
• Flat head screwdriver
• Cable glands as required by your application (available from Vaisala)
• Cables as required by your application (probe connection cables and power
cables are available from Vaisala)
Power supply terminals and lead-through − PELV
option
ANALOG OUTPUTS
RELAY 1RELAY 2
+
+
+
+
+
+
+
+
+
CH1
CH2
CH3
CH4
RS-485
PROBE
24 VOUT
ANALOG
INPUT
NO COM NC NO COM NC
1
2
M20×1.5
VS
+
Power supply input wiring is required only
for transmitters powered with protective
extra low voltage (PELV) or AC (mains)
power.
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 5 PELV power supply input terminals
Terminal Function Notes
Power supply ground
VS+ Positive supply voltage 15 … 35 VDC or 24 VAC ±20 %
VS- Negative supply voltage
9
ENGLISH