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4 mm (0.2 in.)

diameter

44 mm

(1.8 in.)

76 mm

(3.0 in.)

91 mm

(3.6 in.)

8 mm

(0.3 in.)

10 mm

(0.4 in.)

138 mm (5.5 in.)

119 mm (4.7 in.)

SERIAL DAC

+5V IN

COM IN

CLK IN

DATA I N

FLASHING

=RUNNING

+ OUT

OUT

{

Power Input: 5Vdc, 300mA max.

Voltage Output: 10Vdc, 10mA max.

urrent O

utpu

t: 10V

c, 20

ax.

2 WATLOW SDAC User’s Guide

Wiring the Serial DAC

The Serial DAC provides a robust analog output sig-

nal. The module converts the proprietary Serial DAC

signal from the controller’s open collector output in

conjunction with the clock signal to an analog current

or voltage. See Figure 2 for wiring a Serial DAC. The

Serial DAC is user-configurable for voltage or current

output. Refer to Figure 3 for configuration information.

The Serial DAC optically isolates the controller’s con-

trol output from the load. One Serial DAC may be

MLS300 or CPC400 controller at its output terminal

board. These controllers cannot provide sufficient cur-

rent for more than one Serial DAC; use an external

power supply.

Figure 2. Single or Multiple Serial DACs with External

Power

Configuring Serial DAC Outputs

The Serial DAC’s voltage and current output is jumper

selectable. Refer to Figure 3. Configure the jumpers as

indicated on the Serial DAC label.

Figure 3. Voltage and Current Jumper Positions

+5V I

COM IN

CLK IN

DATA IN

FLASHING

=RUNNING

+ OUT

OUT

OUTPUT SELECT

CURRENT

VOLTAGE

{

: 5Vdc, 300mA max.

utput: 10Vdc, 10mA max.

utput: 10Vdc, 20mA max.

COPPER CONDUCTORS ONLY

Pins

1 +5V In

2 COM In

3 CLK In

4 Data In

5 + Out

Out

+V1 (5V)

+V2 (15V)

COM

Controller Output

SDAC Clock

Control Output

–

Power Supply

Serial DAC

Daisy chain up to

16 SDAC

Load

Figure 1. Serial DAC Dimensions

WARNINGS

WARNING

The SDAC module is for indoor use only. To reduce

the risk of fire or electrical shock, install in a con-

trolled environment relatively free of contaminants.

WARNING

Use a power supply with a Class 2 rating only.

NOTE

Tighten screw terminal connections to 0.5 to 0.6 Nm

(4.5 to 5.4 inch-pound).

NOTE

Use copper conductors only.

1 2 3 4

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