SNAP PAC S-Series User’s Guide
33
33
Chapter 3
3: Maintenance and
Troubleshooting
To troubleshoot problems
that may have occurred, see the section
“Troubleshooting,”
starting
below.
For maintenance information
about the SNAP PAC S-series controller, see the section
“Maintaining the Controller” on page 39
.
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
“For Help” on page 14
.
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 16
and the power
requirements listed in
“Specifications” on page 51
. 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 earth/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.)
