SNAP-AIPM-3 OPTO 22, SNAP-AIPM-3 Datasheet - Page 14

• Manufacturer Part Number: SNAP-AIPM-3
• Description: Power Monitoring Module
• Manufacturer: OPTO 22

Specifications of SNAP-AIPM-3

• Accessory Type: Three-phase Power Monitoring Module
• Signal Input Type: 85 To 250V And 0 To 10A RMS
• No. Of Analog Inputs: 4
• Rohs Compliant: Yes
• For Use With: Snap I/O Modules
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

PAGE
14
Wiring Diagrams—SNAP-AIPM-3
Opto 22 • 43044 Business Park Drive • Temecula, CA 92590-3614 • www.opto22.com
SALES 800-321-6786 • 951-695-3000 • FAX [phone] • [e-mail] • SUPPORT 800-835-6786 • 951-695-3080 • FAX [phone] • [e-mail]
© 2006–2011 Opto 22. All rights reserved. Dimensions and specifications are subject to change. Brand or product names used herein are trademarks or registered trademarks of their respective companies or organizations.
Three-Phase Wiring to SNAP-AIPM-3 Module
NOTE: This wiring method is less expensive than the one on
page 13
CAUTION: Be very careful when connecting input channels.
Do not connect line voltage to the current input
channel; such a connection will result in severe damage to
the module. This damage is not covered by warranty. Use a
current transformer instead.
Using this wiring, after you scale the module, the following measurements are available.
All measurements are synchronously updated every second:
IMPORTANT—Voltage change: Older SNAP-AIPM-3 modules used 0–250 volts and 0–10
amps. Before wiring or scaling, check the printed information on the module to make sure
you are using the correct voltage and current.
• Volts, phase A to phase C
• Volts, phase B to phase C
but does not provide as much information.
• 3-phase sum of 1 sec.—signed energy (watt seconds)
• 3-phase sum of 1 sec.—unsigned energy (watt secs)
SNAP Power Monitoring Modules
CAUTION: Use caution when selecting wire gauges for your
application. Use conservative wire gauges with proper volt-
age ratings.
CAUTION: Terminals 2 and 3 share a common connection
inside the module. Make sure you observe polarity when
connecting the second channel. To avoid a potentially
hazardous short circuit, double-check wiring before turning
on the current to be monitored.
CAUTION: The SNAP-AIPM-3
module does not contain a fuse.
Protect the system by adding a
fuse.
Suggested vendors
Protection fuses:
http://www.littelfuse.com
Voltage and current transformers:
http://www.crmagnetics.com