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.