Emerson 2700 Discrete output wiring, 9Discrete output 1 Terminals 3 & 4 Channel B Internal power

Output Wiring – Model 2700 Configurable I/O Transmitters

6.5Discrete output wiring

Discrete output (DO) wiring depends on whether you are wiring terminals 3 and 4 (Channel B) or terminals 5 and 6 (Channel C), and also on whether you have configured the terminals for internal or external power. The following diagrams are examples of proper wiring for these configurations:

•Channel B, internal power – Figure 6-9

•Channel B, external power – Figure 6-10

•Channel C, internal power – Figure 6-11

•Channel C, external power – Figure 6-12

Figure 6-9Discrete output 1 – Terminals 3 & 4 (Channel B) – Internal power

+

–

Total load

Note: See Figure 6-13for output voltage versus load information.

Figure 6-10Discrete output 1 – Terminals 3 & 4 (Channel B) – External power

3–30 VDC	+	Pull-up resistor or DC relay
	–
		+
		–

Note: See Figure 6-15for recommended resistor versus supply voltage.

CAUTION

Excessive current will damage the transmitter.

Do not exceed 30 VDC input. Terminal current must be less than 500 mA.

Output Wiring – Intrinsically Safe

Output Wiring – Configurable I/O Output Wiring – Fieldbus/PROFIBUS

Specifications

Installation Manual 47