WattMaster WCC II - Manual (Page 8)

WCC II Operator’s Guide
Operator Interfaces I-2
System Overview
Operator Control Console
Components
The building operator monitors and controls the building
mechanical systems from one central location called the Operator
Control Console. The Operator Control Console consists of the
following components:
1. Central Processing Unit (CPU)
2. Keyboard
3. Monitor
(CRT)
4. Printer (optional)
5. Modem (optional)
Central Processing Unit
A personal computer with custom communication boards acts as
the Central Processing Unit (CPU) which communicates with the
remote mounted satellite controllers via a two wire communication
loop.
The personal computer is dedicated to the ECC/WCC II system
and cannot be used for other functions. The use of hardware
accessories with the ECC/WCC II CPU that is not specifi cally
approved in writing by WattMaster Controls Group will void the
warranty on the ECC/WCC II system. The use of software other
than that furnished with the ECC/WCC II system may result in
system malfunction. WattMaster Controls Group is not responsible
for a system failure so generated.
Monitor
The monitor resembles a television and displays computer data in
text on its cathode ray tube (CRT), or screen.
Keyboard
The keyboard is arranged like a typewriter to allow manual entry
of data and programs. We suggest that you fi rst become familiar
with the keyboard before attempting to operate the system. Refer
to the owner’s manual supplied with your computer for additional
keyboard information.
Note: We highly recommend that you only use the number
keys along the top of the keyboard while entering numeric
values and use the keypad ONLY for cursor control on the
ECC/WCC II system.
Printer
The on-site printer allows the operator to print status or schedule
summaries, a permanent record of entered programs, and trend
logging reports. The printer will automatically print alarms as they
occur, print operator ID as the user signs on and off the system,
and print any overrides that are entered.
Satellite Controller
The satellite controllers are fi eld mounted, microprocessor based
units which provide direct digital control of building mechanical
systems. The satellite controllers receive operating instructions
from the CPU, but once they are programmed, they have the
“brains” to monitor and control building mechanical systems
independently of the CPU. If communication from the CPU to
the satellite controllers is broken, the satellite controllers will
continue to control at programmable setpoints. In the event of a
primary power failure, the satellites will retain both their operating
instructions and accumulated data in battery backed memory.
The three versions of the satellite controller that will communicate
with the ECC/WCC II system are the SAT II, SAT II-A, and SAT
II-B.