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UPLC-II™ System Manual
2.4.4 Input/Output (I/O) Module
Description:
The Input/Output (I/O) module interfaces the
Transceiver module to all the inputs and outputs on
the backplane terminal blocks. All inputs and out-
puts are non-polarity sensitive. It has several hard-
ware jumpers that require setting before being put
into service. All jumpers are “ganged” type jumpers
that sense the jumper setting and report it back to
the Transceiver processor for displaying status on
the web pages. The I/O module mounts in the top
right horizontal slot of the chassis behind the front
display board. The corresponding I/O OK LED that
gives status of this module is located on the display
board.
Customer interface points:
Inputs (5 Standard)
There are 5 current-limited inputs that draw 5 mA
maximum.
• INPUT 1 – INPUT 5 Voltage Selection
jumpers – Choose between 15V, 48V, 125V,
and 250V. These are high voltage threshold
inputs that require at least greater than half
high station battery voltage to operate as
long as the correct voltage is chosen.
Outputs (10 Standard Low Level)
There are 7 standard low level solid state outputs.
• LL01-LL07 Current Selection jumpers –
Choose between 0.1A and 1.0A continuous.
Use 0.1A for driving low current loads such
as microprocessor relays, and use 1.0A for
devices that draw up to 1A continuous. The
0.1A setting exists because there is a very
low leakage current when the output is
turned off for the 1.0A setting, especially at
250V input, which could cause a low current
device to potentially misoperate. The 1.0A
output should also be used when having to
interrupt currents that are over 0.25A, as it
can interrupt up to 1A currents at 250Vdc,
unlike all the other UPLC-II™ outputs
which have lower current interrupting capa-
bility.
There are 3 standard low level EM contact outputs
normally used for low current alarm circuits.
• LL08-LL10 Contact Selection jumpers –
Choose between N.O./N.C. (Normally
Open/Normally Closed)
Outputs (4 Extra Optional Trip Duty)
These are able to make and carry up to 30A for 200
msec, which is long enough to trip a breaker direct-
ly.
• TD01-TD04 Contact Selection jumpers –
Choose between N.O./N.C. (Normally
Open/Normally Closed)
Description Part Number
Input/Output (I/O) Module CU20-IO1MN-001
NOTE:
See the Specifications Tables at the beginning of this
chapter for full ratings of inputs and outputs.
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