804-R010-330 datasheet(13/32 Pages) MAGNETROL

13 / 32 page

Relay 2

(TB3)

Relay 1

(TB2)

50-604 Kotron Model 804 Sentinel II RF Level Transmitter

2.4.2 Wiring Operation

2.4.2.1 4–20 mA output wiring

Connect the positive wire to the

+ terminal; connect the negative wire

to the – terminal.

2.4.2.2 Active or passive selection

The 4–20 mA output can be config-

ured for active or passive operation.

Active mode allows the Sentinel II

to drive the loop (for example, the

Sentinel II is the 24 VDC power

supply). The passive mode allows the

Sentinel II to react like a loop-powered

transmitter (the loop power is supplied

elsewhere). Switch S1 changes the

mode. See Figure 6 on page 9.

Cable should be shielded, twisted pair,

22 gauge stranded conductors. In the

active mode of operation the shield

should be grounded at the model 804.

In the passive mode the shield should

be grounded at the power source.

Caution: Applying power to the 4–20 mA output, while in the active

mode, will seriously damage the instrument.

2.4.2.3 RS-485 output

RS-485 communication is achieved by means of a 2-wire,

twisted pair connected to terminal block.

1. Connect the A wire from the control room converter to

terminal A.

2. Connect the control room converter wire B to terminal B.

NOTE: Polarity among units in loop must be observed.

3. If connecting multiple 804 units in a daisy chain configu-

ration, be sure to connect the wiring in parallel and have

the ending 804 unit with the termination resistor

jumpered. The termination jumper pins are located under

the shield, below the RS-485 terminal block. The jumper

(JP1) should be in positions 2 and 3, removed on all units

except the last one in the chain. The last unit should have

the jumper in positions 1 and 2.

4. Proceed to Unit Configuration section on page 11.

NOTE: If connecting several units, note the color wire used for A and

B; ensure that the same designated color is used for each

of the units.

Relay 4

(TB4)

Relay 3

(TB5)

L1 (+)

Not used

L2/N (–)

Input

power

(TB1)

Figure 7

Power Supply Board

Terminal Connections

804-R010-330 数据表(PDF) 13 Page - Magnetrol International, Inc.

804-R010-330 数据表(HTML) 13 Page - Magnetrol International, Inc.

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32

数据表下载