WattMaster WCC III part 19 - Manual (Page 3)

18. SAT 3P INSTALLATION GUIDE
WCC III Technical Guide 18-1
Figure 18-1: SAT 3P Controller
SECTION 18:
SAT 3P (PULSEMETER)
CONTROLLER MANUAL (SS5013)
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Each SAT III controller has a single general purpose AIN 1 input
that is an Analog Input / high speed binary capture input which can
also be used as a pulse meter input. The SAT III controller can only
interface to 1 pulse meter.
The SAT 3P controller is in the simplest terms a stripped down SAT
III controller. The SAT 3P controller has no binary logic inputs, no
relay outputs, no analog inputs, no analog outputs, and no HSS
expansion port. The SAT 3P controller has eight high speed binary
capture inputs used for pulse meter type inputs.
Why would you want to purchase a SAT 3P controller? Cost and
labor are the major factors. To do tenant sub-metering for 16
tenants, you would normally need to buy 16 SAT III controllers.
This would be a fairly high and costly expenditure. The same 16
tenant sub-metering can now be accomplished by using two SAT
3P controllers. Also, wiring is an issue. It is easier to wire 16 pulse
meter outputs to two SAT 3P controllers than it is to wire to 16
SAT III controllers that could be scattered throughout the building.
The SAT 3P controllers should ideally be located next to the pulse
meters. This is so that the binary outputs from the pulse meters
can readily and easily be connected to the inputs of the SAT 3P
controller.
The SAT 3P controller is used to interface up to 8 pulse meters
per SAT 3P controller. The SAT 3P simulates 8 SAT III satellites
on the WCC III communications loop. The one and only input
that is used per simulated satellite is AIN 1. This AIN1 input is no
longer a general purpose analog input on the SAT 3P controller.
This AIN 1 input is a specialized high speed capture binary input,
and is designed to detect pulse type inputs. All other satellite inputs
and outputs are non-functional on these 8 simulated satellites.
The Trendlog capabilities are still functional on these 8 simulated
satellites.
Overview