INSTALLING AND CONFIGURING THE CONTROLLER
SNAP PAC S-Series User’s Guide
16
Power Supply Recommendations
Opto 22 recommends that the SNAP PAC S-series controller be powered with an Opto 22 SNAP-PS24
or SNAP-PS24U power supply. In place of one of these power supplies, Opto 22 recommends an
8-32 VDC linear supply with adequate current ratings for the load. For more information on power
requirements, see
“Specifications” on page 51
.
Change to SNAP-PAC-S1 Power Input Range
Current SNAP-PAC-S1 controllers have an 8–32 VDC input range, but earlier SNAP-PAC-S1 controllers
use an 8–24 VDC input range.
Before applying power to the controller, confirm that the
input voltage is within the voltage range shown on the faceplate.
The voltage input rating can also be determined based on the SNAP-PAC-S1’s serial number as
follows:
•
SNAP-PAC-S1 controllers
with serial number 500000 and higher
have an 8–32 VDC voltage input
rating.
•
SNAP-PAC-S1 controllers with serial numbers lower than 500000 have an 8–24 VDC input
rating.
Using an input voltage above this range will cause damage that is not covered
by the warranty.
The SNAP-PAC-S1 serial number appears on the sticker on the side of the unit. The input voltage
rating is shown on the top cover of the controller.
Installing Hardware
1.
Install Opto 22 I/O units according to instructions in the brain’s user’s guide.
This guide is on the CD that was shipped with the I/O unit’s brain; it is also available from our
website at www.opto22.com.
2.
Choose a convenient mounting location for the SNAP PAC S-series controller and either
panel-mount or DIN-rail mount it according to the diagrams on
page 25
and
page 29
.
3.
Confirm that the power supply to be used with the controller is turned off or unplugged, and
discharge any residual charge that may remain in the power supply.
4.
With the power supply off or unplugged, connect the power supply to the controller.
CAUTION:
Reversing wire polarity may cause damage to your controller. This damage is not covered
by Opto 22’s warranty. If you are not certain about the polarity of the wires on your power supply,
check with a meter.
SNAP-PAC-S1
input voltage
rating
SNAP-PAC-S1
serial number
IP Address
IP Address
MAC 1: 00-A0-3D-00-XX-XX
MAC 1: 00-A0-3D-00-XX-XX
CC
501023
