4–20ma current loop transducers, Relay output wiring, 20 ma transducer – Sensaphone WEB600 Users manual User Manual

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WEB600 User’s Manual

4–20Ma CUrrent loop transdUCers

The inputs on the Web600 are compatible with transducers that produce an analog output current of 4

to 20mA. Such transducers are available to measure tank and well levels, extreme temperatures, air pres-

sure, water pressure, flow, voltage, current, rotational speed, etc. Contact our technical support depart-

ment for assistance regarding your monitoring requirements. Follow the wiring diagrams below for

connecting a 4–20mA device:

External

24V

Power

Supply

FGD-0053

4-20 mA

Transducer

Wiring a 4–20mA device using an external 24 VDC supply.

relay oUtpUt wirinG

The WEB600 includes an SPST relay output that can be used to turn on a light, siren, or other device

whenever an alarm occurs. The output is a normally open dry contact that can be used for low voltage

switching. The relay is rated for up to 30VAC/VDC 1 Amp. A sample wiring diagram is shown below:

Batter

Backup

Ethernet

Power

Alarm

Zone

+ 1 –

Zone

+ 6 –

Zone

+ 5 –

Zone

+ 4 –

Zone

+ 3 –

Zone

+ 2 –

Relay

Output

The relay will engage whenever an input is above or below the programmed alarm limits and the pro-

grammed recognition time has been met. It will release as soon as the input returns to a normal condi-

tion.