Electrical Installation - Vaisala MHT410 Guía Rápida

Electrical Installation

If the transmitter was ordered with the Vaisala cable CBL210392-
5M, the cable is already pre-connected to the transmitter
according to Wiring Option 1.
See the wiring fold-out pages for wiring diagrams and Vaisala
cable CBL210392-5M wire colors.
To connect the cable to the transmitter:
1. Open the electronics housing with a 5 mm Allen key to access the screw
terminals.
2. Hold the upper nut of the cable gland in place with a wrench (24 mm), and
loosen the sealing nut of the gland with another wrench (24 mm).
3. Lead the cable through the sealing nut and the rubber seal. Turn the shield
over the edge of the rubber seal.
4. Lead the cable through the cable gland. Push the rubber seal back in place
with the shield. Cut off any excess shield. Tighten the sealing nut with
wrench (24 mm).
5. Pull the screw terminal blocks (2 pcs) off from the circuit board.
6. Connect the wiring to the detachable screw terminals according to your
chosen electrical installation option. The wiring diagrams are presented in
the wiring foldout pages. Note that wiring for digital output (RS-485) is the
same in all wiring options.
Table 1 Wiring Options
Option Description
Separate loop powering and galvanic isolation for analog outputs.
1
In transmitters ordered with Vaisala cable CBL210392-5M, the cable
is pre-wired according to this option.
2 Common loop powering and galvanic isolation for analog outputs.
3 Non-isolated configuration for analog outputs sharing transmitter
power supply.
4 Alternative wiring to Option 3, providing reduced current loop area for
analog outputs.
7. When you are finished with the wiring, plug the screw terminals back in and
close the electronics housing.
1 English
EN
DE
FR
ES
PT
JA
ZH
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