SNAP PAC S-Series User’s Guide
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3: Maintenance and
Troubleshooting
To troubleshoot problems
that may have occurred, see
For maintenance information
about the SNAP PAC S-series controller, see the section
TROUBLESHOOTING
If you encounter a problem while installing or using the SNAP PAC S-series controller, check the information in
this section. To contact Opto 22 Product Support, see
.
Checking Power
When troubleshooting any problem with your controller, first check that the required power is correctly
supplied.
IMPORTANT:
The current version of the SNAP PAC S-series standalone controller requires
8–32 VDC power
,
not
the
5 VDC power used by previous SNAP controllers and controller/brains. If you are replacing an older SNAP controller or
controller/brain with a SNAP PAC S-series controller, make sure that 8–32 VDC power is supplied. Note that S-series
controllers with serial numbers below 500,000 use 8–24 VDC.
1.
Review the information in
“Power Supply Recommendations” on page 15
and the power requirements
listed in
. Confirm that the power supply used with the SNAP PAC S-series controller meets
these requirements.
2.
Confirm that all leads connected to the controller and the power supply are securely attached. These
connections are described in
“Installing Hardware” on page 16
.
3.
Verify that the controller’s ground terminal is connected to a known chassis ground as described in
“Installing Hardware” on page 16
.
4.
Confirm that two Phillips-head screws are installed on the wide sides of the case, one screw per side.
(These screws secure and ground the controller’s internal components.)
Communicating on a Wired Ethernet Network
If you attempt to connect to the controller using its IP address and you cannot, first check the following:
•
Make sure the controller has been turned on, the STAT LED is lit and not blinking, and the LNK LEDs for
the connected Ethernet interfaces are lit. (See LED information on pages
.)
•
Verify that you typed in the correct address for the controller. Check the label on the side of the controller,
where the IP address should be written.
