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How the relay output module works, Specifications – Sensaphone SCADA 3000 Users manual User Manual

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SCADA 3000 User’s Manual

HOW THe ReLAY OUTPUT mODULe WORKS

The Relay Output Module contains eight independent latching relays that are controlled by

the SCADA 3000 CPU. They may be controlled manually while online with the SCADA 3000

or automatically using a ladder program or C-program. Specific information regarding output

control using the Ladder & C-Programs can be found in the SCADA 3000 CPU manual. A

latching relay is one that retains (latches) its contact position even if power fails. Thus, if the

Relay Output Module loses power, the relay will maintain its last state until it receives a new

instruction to change its state. The output relays may be used to control a variety of devices

such as lighting, small motors or pumps, computer equipment, or alarm signaling devices.
To program the Relay Output Module, click on the Relay Output icon on the Main Unit form.

The icon will appear at its corresponding address and will be designated by the letters “RO.”

(See Chapter 24, Figure 9, as an example.)

SPeCIFICATIONS

8 LATCHING RELAY OUTPUTS

Rated Load (resistive):

2A 125VAC, 2A 30VDC

Rated Load (inductive):

1A 125VAC, 1A 30VDC

Max. Operating Voltage:

125VAC, 125VDC

Max. Switching Capacity (resistive):

125VA, 60W

Max. Switching Capacity (inductive):

125VA, 30W

Minimum permissable load:

10mA, 5VDC

Contact Protection:

275V Metal-Oxide-Varistor on each output

Network Data Rate:

153.6 Kbps

Bus Termination Impedance:

120 Ohms

Power Requirements:

10–15VDC 80mA, 1.2W

Power Fuse Rating and Type:

500mA 250V, Size TR-5 (Wickman #19372-041-K)

Operating Temperature:

0° to 70° C (32° to 158° F)

Storage Temperature:

-20° to 70° C (-4° to 158° F)

Humidity:

5 to 90% non-condensing

Dimensions:

6.1" x 6.3" x 1.2"

Weight:

0.75 lbs.

Enclosure:

Aluminum Housing with integral mounting flanges

for wall or panel installation.