Operator-defined PCL routines can perform logical and
mathematical calculations, and can be automatically executed or initiated by an
event such as a binary input change-of-state or an analog input high or low limit. Each
PCL routine can be manually executed, one statement at a time, in a special test mode to
allow the operator to verify program logic.
DDC loops provide proportional, integral, and derivative
(PID) control of analog output devices. PID gains are operator-defined as constants or as
variables calculated in the PCL routines. The operator can graphically plot each DDC loop
operation via the UPCM Edit software, to assist in optimizing the performance of
controlled devices.
UPCM Edit software also offers the following capabilities:
Ž Current point status screens provide the
status of each available hardware and software point. Diagnostic information about each
hardware point is also available.
Ž Optional manual overrides on each output card
are available. The manual override on a binary output card is an ON/OFF/AUTO switch. The
manual override on an analog output card is a potentiometer.
Ž The optional LCD provides monitoring
capability and the ability to override points connected to a Universal PCM. This
backlit, 2-line by 40-character display provides an operator interface via eight function
keys, and includes four operator-definable status displays capable of displaying 16 points
each. A fifth display includes Universal PCM status and diagnostics.
Ž A calendar/time clock is included with
the Universal PCM. This clock allows the Universal PCM to completely recover from a power
failure with the correct time and date. The clock/calendar is backed by a super capacitor
for seven days under normal operating conditions.
Ž Modular packaging of the Universal PCM
improves efficiency and makes job site installation easy.
Hardware Description Three versions of the
Universal PCM are available: l
Standard ambient:NEMA Type 1 metal enclosure consisting of
a steel backplane and a resin cover (32 to 120° F, 0 to 49° C)
Extended ambient:NEMA Type 1 metal enclosure consisting of
a steel backplane and a resin cover (32 to 120° F, 0 to 49° C)
Weatherproof: NEMA Type 4 metal enclosure suitable for
outdoor use (-40 to 158° F, -40 to 70° C)
In addition to the enclosures listed above, a unit
frame mount is also available. The Universal PCM is UL-approved as a modular energy
management panel, allowing field assembly of the modular parts while maintaining UL
approval.
The Universal PCM supports up to six operator-selectable,
input/output cards (each with 6 points) for a total of 36 points.
For more information about the Universal PCM, refer to
publication
BAS-PD-5.
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