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Notes:
The ISC can be located anywhere along the RS-485 line.
Install an RS-485 terminator for each end-of-line device.
19.1.4
Power
The ISC accepts either 12 VDC or 12 VAC.
•
Locate power source as closed to the unit as possible.
•
Connect power with minimum of 18 AWG power cable.
•
For AC power sources, the following lines are required: AC Line (L), AC Neutral (N). These lines must
not be interchanged. A 650 mA RMS current is required for AC power supplies.
•
For DC power sources, isolated and non-switching, regulated DC power is required. A 400 mA current
is required for DC power supplies.
Note:
Observe polarity for 12 VDC applications.
12 VAC
19.1.5
Other
Remove the factory-installed plastic safety strip from the memory backup battery. This plastic strip prevents
the battery from being effectively seated. The battery will not function properly until the plastic strip is
removed. When the battery is enabled, all volatile RAM is protected. This should be the last step when
installing the ISC.
A 3 V Lithium Ion battery (Rayovac BR2325 or Wuhan Lixing CR2330) is used for the memory backup.
Note:
You must first remove the plastic strip to enable the battery.
Power Source Wiring
ACDC
OR
AC
GND
Hardware Installation Guide
ACDC
+
AC
12 VDC
-
GND
103
revision 7 —
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