SNAP-AOV-27 Datasheet, PDF (1/15 Pages) Opto Electronics Co,. LTD – SNAP Analog Output Modules

SNAP Analog Output
Modules
Features
Resolution = 0.004% of nominal range
Rugged packaging
Convenient pluggable wiring
SNAP Analog Output Modules
Powered by a single 5-volt supply
Factory calibrated; no user adjustment necessary
Out-of-range indication
Operating temperature 0 °C to 70 °C
Accepts up to 22 to 14 AWG wire
Description
SNAP I/O analog output modules are part of Opto 22’s SNAP
PAC System. They mount on SNAP PAC racks along with other
I/O modules and a SNAP PAC brain or R-series controller, either
a standard wired or a Wired+Wireless^™ model.
These software-configurable output modules handle a wide
variety of signal levels. Most provide dual-channel packaging.
All SNAP analog modules are factory calibrated. Part numbers
ending in -FM are Factory Mutual approved.
SNAP analog output modules have an on-board
microprocessor to provide module-level intelligence, which
makes them an ideal choice for Original Equipment
Manufacturers (OEMs). For additional information about the
stand-alone operation of SNAP analog modules, please refer
to the SNAP I/O Module Integration Guide (Opto 22 form #876).
channels are not isolated from each other. Exceptions: SNAP-
AOA-23-iSRC, SNAP-AOD-29, and SNAP-AOD-29-HFi have two
isolated channels.
Transformer isolation prevents ground loop currents from
flowing between field devices and causing noise that
produces erroneous readings. Ground loop currents are
caused when two grounded field devices share a connection,
and the ground potential at each device is different.
Isolation also provides protection for sensitive control
electronics from industrial field signals.
IMPORTANT: Since most SNAP dual-channel analog output
modules provide two single-ended output channels with a
common reference, these dual channels are transformer and
optically isolated from other modules, but not from each
other. However, SNAP-AOA-23-iSRC, SNAP-AOD-29, and
SNAP-AOD-29-HFi do have channel-to-channel isolation.
Part Numbers
Part
SNAP-AOA-3
Description
Single-channel current
output, 4–20mA
See
pg 2
SNAP racks use a retention rail locking system that holds
modules securely to the rack. Normally, a hold-down screw is
not required. However, for applications that require additional
module security, each module can be secured on the rack
with two 4-40 by ½-inch standard machine screws.
Specifications and wiring diagrams are in module descriptions
starting on page 2. Dimensional drawings begin on page 11.
Notes for legacy hardware: Most SNAP analog output
modules can also be used with legacy SNAP Simple, SNAP
Ethernet, and SNAP Ultimate brains and with serial SNAP
brains such as the B3000. These modules can be mounted on
SNAP B-series or M-series racks. Exceptions are noted in
individual module descriptions.
Isolation
All SNAP analog output modules are isolated from all other
modules and from the I/O processor (SNAP PAC brain or on-
the-rack controller). On most dual-channel modules, the two
SNAP-AOV-5
Single-channel analog volt-
age output, 0 to 10 VDC
pg 3
SNAP-AOA-23
Dual-channel analog output,
current loop, 4–20mA
pg 4
SNAP-AOA-23-iSRC
SNAP-AOA-23-iSRC-FM*
Isolated dual-channel analog
output, current loop, 4–20
mA, with loop sourcing
pg 5
SNAP-AOV-25
Dual-channel analog voltage
output, 0 to 10 VDC
pg 6
SNAP-AOV-27
Dual-channel analog voltage
output, -10 to +10 VDC
pg 7
SNAP-AOA-28
Dual-channel analog output,
current loop, 0–20 mA
pg 8
SNAP-AOD-29
Isolated dual-channel analog
time-proportional digital out- pg 9
put, 5 to 60 VDC
SNAP-AOD-29-HFi
Isolated dual-channel analog
TPO or PWM digital output, pg 10
2.5 to 24 VDC
* Factory Mutual approved
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]
© 2006–2014 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.
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