Johnson Controls S321-IP Hardware Installation page 7

S321-IP Network Controller
24-10239-480 Rev. F
3. If you need to remove a controller from the DIN rail, reverse the
mounting sequence (pull down the bottom clips, then pull the bottom
of the controller out and lift it up.)
Power Source Requirements
Parameter
Power
Input voltage
Nominal voltage
Current
Class 2 transformer (optional) See
Line Voltage Information
If the facility is located in an area where power lines are subject to
frequent lightning strikes, verify with the electric company that the
building transformer is equipped with surge protectors. These, as well as
a "crowbar" type of protection, can be installed at the main service
entrance if the building transformer is not equipped with lightning
protection.
While lightning is one cause of power line transients, others can be
internal or external to the building environment. The general application
of transient surge suppression is low-cost insurance to ensure long life of
the equipment being installed.
Lithium Battery
The S321-IP contains a lithium battery that is used for realtime clock
backup. The lithium battery is shipped from the factory charged and
operational.
If there are no power outages, change the battery every five years. If a
power outage occurs, the battery life is approximately 30 days. Replace
with Panasonic part number CR2025 or equivalent.
Value
24 W
+12 to +28 VDC; 16 to 28 VAC
+12 to +24 VDC; 16 to 24 VAC
1 A at 24 V; 2 A at 12 V
step 8 on the Underwriters Laboratories Compliance
Verification Sheet at the beginning of this manual.
3
Hardware Installation