IM05805022K
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Instruction Booklet
Effective: January 2012
Page
19
ATC-300+ Automatic
Transfer Switch Controller
5.7 Engine Test
The Engine Test is intended to permit the periodic performance of
tests of the system. The exact test conditions are determined by
the programmed setpoints. The operator-selected parameters
include setting the engine run time and the Test Mode. Refer to
Table 2 for test programming details.
There are three test modes:
0
No Load Engine Test;
1
Load Engine Test; or
2
Disabled.
The factory default is set to 0 - No Load Engine Test
IF THE ATS IS UNABLE TO PROCESS A ENGINE TEST REQUEST DUE
TO THE ATS STATUS, THE REQUEST IS IGNORED.
When the Engine Test pushbutton is pressed, the following mes-
sage will appear on the LCD Display:
Line 1: Password 0 0 0 0
Line 2: Use Inc/Dec & Step
After entering the 4-digit password and pressing the Step/Enter
pushbutton, the ATC-300+ will display the Time Delay on Engine
Starting (TDES) timer countdown. Once the TDES countdown
reaches zero, the ATC-300+ Controller will initiate an engine
start. The engine run duration will be per the Engine Run Test
Time setpoint.
If the (0) No Load Engine Test Mode has been selected, the trans-
fer from Source 1 to Source 2 will not occur. If the
(1) Load Engine Test Mode has been selected, the transfer from
Source 1 to Source 2 will occur after the generator output has
reached the specified setpoints. If the (2) Disabled Mode has
been selected, the Engine Test will not occur.
All enabled and programmed time delays will be performed per
the setpoints during an engine test. The time delays will appear
on the LCD Display with “countdown to zero” when active.
Depending on the setpoints selected with the ATC-300+
Controller, these can include:
•
TDES;
•
Time Delay Normal to Emergency (TDNE);
•
Time Delay Emergency to Normal (TDEN);
•
Time Delay for Engine Cooldown (TDEC);
•
Time Delay Neutral (TDN); and
•
Pre-transfer Delay Signal (TD PRE-TRAN).
All operations are “Failsafe”, that is they prevent disconnection
from the only available power source and also force a transfer or
re-transfer operation to the only available power source.
During an engine test, if the Engine Test pushbutton is pressed a
second time before the Engine Test is complete and correct pass-
word has been entered; the Engine Test will be terminated. An
engine test may also be aborted in the following ways:
1. If the Emergency Source does not become available within
90 seconds of the ATC-300+ providing the engine start
command;
2. If, during the TDNE countdown, the Emergency Source goes
unavailable more than three times (Each time, TDNE will
restart);
3. If the Emergency Source is powering the load and it goes
unavailable for more than the TDEF setting; and
4. If the Normal source becomes unavailable.
When an engine test is aborted due to an unavailable source dur-
ing TDNE countdown, the Alarm relay will energize, a “TEST
ABORTED” message with appear on the display, and the event
will be logged into the Transfer History as “Aborted Test”.
5.8 Plant Exerciser
THE PLANT EXERCISER FEATURE ALLOWS FOR AUTOMATIC PRO-
GRAMMING OF THE DESIRED TEST CYCLE ON A DAILY,
7-DAY, 14-DAY, OR 28-DAY BASIS. IF THE ATS IS UNABLE TO PRO-
CESS A PLANT EXERCISER REQUEST DUE TO THE ATS STATUS, THE
REQUEST IS IGNORED.
The plant exerciser is a feature that provides an automatic test of
the generator. The test can be run daily, every
7 days, every 14 days, or every 28 days with durations equal to
the programmed engine test time. Two optional modes of plant
exercising are available:
•
No Load Exercise; and
•
Load Exercising with “Failsafe”.
The ATC-300+ Controller allows the user to program the exact
day, hour, and minute that the Plant Exercise will occur. This
allows for the Plant Exercise to take place at the most opportune
time for the specific facility.
The hour and minute that the Plant Exerciser is performed are pro-
grammed with the “PE HOUR” and “PE MINUTE” setpoints where
“PE HOUR” is in military time (1:00 PM = 13:00) and the “PE
MINUTE” can be set from 0 to 59. The test day is programmed
with the “PE DAY” setpoint. The ATC-300+ Controller compares
the “PE DAY” setpoint with the “WEEKDAY” setting, which is set
along with the time and date. If a 7-day plant exercise is pro-
grammed, the selections are from “1 SUN” through “7 SAT”.
If a 14-day plant exercise is programmed, the “PE DAY” setpoint
can be set from “1 SUN” to “14 SAT” where “1 SUN” is the first
Sunday of the 14-day period and “14 SAT” is the second Satur-
day of the 14-day period.
If a 28-day plant exercise is programmed, the “PE DAY” setpoint
can be set from “1 SUN” to “28 SAT” where “1 SUN” is the first
Sunday of the 28-day period and “28 SAT” is the fourth Saturday
of the 28-day period.
If desired, the Plant Exerciser can be disabled by choosing “OFF”
for the “Plant Exer-“ setpoint.
NOTICE
NOTICE
