Emerson Series 3000 MVD User Manual

269

Follow these steps to install user-supplied relays.

Follow the steps below to connect the transmitter/controller’s discrete output wiring terminals to one, 
two, or three relays.

1. Use the following wire sizes:

•

Model 3300 or Model 3500: 24 to 16 AWG (0,25 to 1,5 mm

2

)

•

Model 3350 or Model 3700: 22 to 16 AWG (0,35 to 1,5 mm

2

)

2. Connect the wires between the transmitter/controller and the relay as shown in Table D-2 and 

in the following diagrams:

•

Model 3300 or Model 3500 with screw-type or solder-tail connectors: see Figure D-8

•

Model 3300 or Model 3500 with I/O cables: see Figure D-9

•

Model 3350 or Model 3700: see Figure D-10

Improper installation of wiring, or installation with power supply on, can cause 
electric shock or property damage.

For personal and system safety:

•

Shut off power before installing wiring.

•

Make sure the installation meets or exceeds local code requirements.

•

Install relays and wiring in accordance with the illustrations in these instructions.

•

Install relays and wiring where ambient temperature remains between –4 and 
+140 °F (–20 and +60 °C).

19

a 14

20

Return

18

c 14

18

DO1

20

c 16

17

DO2

22

c 18

16

DO3