24
16.5
Restore household loads to the desired condition. The
circuit breaker marked “Energy Sentry Demand Con-
troller” should be left on with desired demand limit set
into the Control/Display Unit.
17.0 System
Programming
17.1
The System Programming Mode of the 9212 is designed
to give the user ultimate flexibility in “tailoring” the
controller’s operation to the user’s exact requirements.
In this mode, the user programs the controller at the
Control/Display front panel and answers a series of
questions which tell the controller: 1.) How many relays
are connected to the system; 2.) What load control
strategy it will operate under; and 3.) The minimum on
and minimum off times for all 8 control points, if times
are required. 4.) Miscellaneous system information.
The system programming mode consists of a series of
up to 28 “questions or settings” in seven different
groups. The question is designated by the Alpha-
numeric symbol (“mnemonic”) or abbreviation. The
questions are stepped through one at a time using the
Demand Limit key. The “answer” or data is programmed
into the “actual” display window using the “up” or
“down” keys.
The six groups of questions are as follows:
Group #
Function
# of Questions
1
Off-Peak Set Point
1
2
Sets the
Number of Relays
1
Connected "nr"
3
Sets
Priority
for each load
8 Max*
4
Sets
Minimum On Time
8 Max*
for each load.
5
Sets Minimum Off Time
8 Max*
for each load
6
Sets the Average Period "AP"
1
(15, 30, or 60 min.)
7
Sets the Demand Range "dr"
1
(40 OR 80 KW)
*Only the number of control points selected
appear in each of these sequences.
Step 1.
To enter the system programming mode
depress the "Buzzer Volume" and "Reset
Peak" keys for about 5 seconds. The
controller will turn off the Instantaneous,
Average, Peak and Reduce Load LEDs.
16.3 Conduct Power Off Test
16.3.1
All "Circuts On" LED lights should now be on.
16.3.2
Set demand limit to 1 KW according to the instructions
on the front panel of the Control/Display Unit.
16.3.3
Place actual demand in the “Instantaneous” Mode.
16.3.4
Turn on a large (greater than 1 KW) uncontrolled load
such as the kitchen range. Leave all controlled loads off.
16.3.5
Within a minute or two, all “Circuits On” lights on the
Control/Display unit should turn off (unless minimum on
times are programmed) and the alarm buzzer should
sound (unless alarm volume is turned off).
16.3.6
Increase the demand limit setting 1 KW at a time until the
alarm buzzer stops. The demand limit should be slightly
larger than the uncontrolled load. This verifies that the
unit is measuring power properly.
16.3.7
Turn off uncontrolled load.
16.4 Conduct Power On Test
16.4.1
Insure all controlled load breakers in the load center are
off except for the 15 Amp “Energy Sentry Demand
Controller” breaker. Observe the Instantaneous De-
mand in the Control/Display Unit while in the Instanta-
neous Mode. This should show a very low value for
consumption.
16.4.2
Set the demand limit to a number 2-3 times higher than the
estimated demand limit of the installation.
16.4.3
Turn up (for heating) or down (for air conditioning) all
thermostats.
16.4.4
Turn on all controlled load breakers (i.e. start dryer and
run hot water). This demand limit will allow all of the
circuits to be turned on in about 8 minutes (1 minute per
circuit). This verifies that all relays are actually closed
and each circuit is providing power to the load.
Caution:
Do not leave controlled loads on for more
than a few minutes as this may cause the electric meter
to register a high demand peak.
Note:
If minimum on and off times have been pro-
grammed into the unit, then loads controlled under
these times will switch only when the appropriate time
intervals have elapsed.
