Detcon FP-700 User Manual download pdf (Page 14)

Model FP-700

FP-700 Instruction Manual Rev. 3.0 Page 10 of 40

AWG Wire Dia.

Over-Current

Protection

22 0.723mm 3A

20 0.812mm 5A

18 1.024mm 7A

16 1.291mm 10A

14 1.628mm 20A

Table 1 Protection vs. Wire Gauge

NOTE 1:

Wiring table is based on stranded tinned copper wire and is designed to serve as a

reference only.

NOTE 2:

Shielded cable is required for installations where cable trays or conduit runs include

high voltage lines or other possible sources of induced interference. Separate conduit runs are

highly recommended in these cases.

NOTE 3:

The supply of power should be from an isolated source with over-current protection

as stipulated in table.

Terminal Connections

CAUTION:Do not apply System power to the sensor until all wiring is properly terminated. Refer to

Section2.7Initial Start Up

Customer

Supplied Wiring

(Out to next Device)

(+)

(-)

A(+)

B(-)

Wiring to

Sensor Assembly

Wht

Blu

Red

Grn

Blk

Explosion

Proof

Junction Box

(+)

(-)

A(+)

B(-)

(+)

(-)

A(+)

B(-)

Customer

Supplied Wiring (In)

Modbus RS-485 to

Host Control Device

Power from and 4-20mA

out to Control Device

Install a 100-250 Ohm

resistor if the 4-20mA

output is not used

Modbus RS-485 to

next Device

Figure 11 Sensor Wire Connections

a) Remove the junction box cover. Identify the terminal blocks for customer wire connections.

b) Observing correct polarity, terminate the 3-conductor 4-20mA field wiring (+, -, mA) to the sensor

assembly wiring in accordance with the detail shown in Figure 11. If the 4-20mA output is not used, the

green wire from the sensor must be connected to the (-) terminal on the Transient Protection Module.

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Detcon FP-700 User Manual Page 14

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