Vaisala Indigo300, User Manual

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The transmitter wiring options include a lead-through at the backside and lead-throughs on
the bottom.
ANALOG
OUTPUTS
-
+
-
+
-
+
CH1
CH2
CH3
+
–
24V
8 Nm
6 Nm
1
2
3
PROBE
–
+
–
RS-485
24 Vout
RS-485
24 Vout
+
Figure 13 Indigo300 wiring options and
cable diameters
1 Wiring from the back
• Cable diameter: 5 … 10 mm
(0.20 … 0.39 in)
2 Wiring through a M20×1.5 gland or
conduit fitting NPT 1/2"
• Cable diameter for M20 gland:
7 … 13 mm (0.26 … 0.51 in)
3 Wiring through a M16×1.5 gland or
conduit fitting NPT 1/2"
• Cable diameter for M16 gland:
2 … 6 mm (0.08 … 0.24 in)
If you are using a 24 V AC power supply for the transmitter, make sure to use
separate cables for the AC power and the analog outputs to ensure that the EMC
requirements are fulfilled.
3.3.3 Wiring from the back
1. Before connecting wires or cables, make sure that the transmitter is powered off.
2. Open the transmitter cover, if not already open.
3. Remove the center of the rubber lead-through to fit your cable through the opening. Use,
for example, a small screwdriver to thrust the small round center piece off.
4. Lead the cable through the opening.
To preserve the IP rating of the transmitter, the back of the
transmitter must rest flat on the installation surface. Make sure that you
route the cable so that it does not push the back of the transmitter off the
installation surface.
CAUTION!
5. Connect the wiring to the applicable screw terminals.
6. Fit the cable under the strain relief clip next to the rubber lead-through, as applicable. You
can also use the clip with a cable tie.
Indigo300 User Guide M212849EN-A
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