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GE Zenith Controls 9
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ZTX Operation and Maintenance Manual (72R-1000)
Control Interface
(cont’d)
28 Day
BA
JP4
JP5
14 Day
BA
JP4
JP5
7 Day
BA
JP4
JP5
21 Day
BA
JP4
JP5
Automatic Exerciser Jumper Settings
No Load
BA
JP6
JP6
Load
Figure 8
Automatic Generator Exerciser
The ZTX automatic generator Exerciser can perform a
pre-scheduled repeating test of the generator and/or
the ATS mechanism depending on which jumpers are
selected on the controller board. Additionally, the ATS
can be preset to perform the exercise every 7, 14, 21
or 28 days. Regardless of which interval is selected, all
exercisers have a preset run-duration of 10 minutes.
Selection of the exerciser interval is through three
jumpers located on the controller board as shown in
Figure 6. The Exerciser comes from the factory preset
at 28 days and is not active. To change the exerciser
interval, remove power from the controller completely,
and move the jumpers at positions jp4 and jp5 to match
the selected repeat-cycle from the configurations shown
in Figure 7.
Selecting Exerciser with or without Load Transfer
The Exerciser function can be programmed to perform
either a Load-transfer or a non-Load transfer. Selecting
either is done by changing the Jumper JP6 as shown in
Figure 8. To change between a Load-transfer or no-Load
transfer, remove power from the controller completely
and move the jumper at position JP6.
Setting and Canceling an Exerciser
In order to set an automatic Exerciser, choose the exer-
ciser interval and whether a Load-transfer or no-Load
transfer is desired as stated above. An exercise can only
be set if S1 is available and the ATS (and Load), is on S1
source.
To establish an Exerciser
At the exact time desired, press and hold the EXER SET
key for at least 1 second. The ATS will immediately start
an initial exercise by attempting to start the generator,
running through the Timers (figure 3) and will either
only start the generator, or, will start the generator and
transfer the Load from S1 to S2, for the time duration
of the exerciser interval, 10 minutes. Once the Exercise
is completed, the ATS will continue the timing sequence
and retransfer the Load back to S1, cool down the gen-
erator and terminate until the next scheduled interval
time. Any time an Exerciser has been established and is
scheduled, the S2 Available and S2 position LEDs quick-
ly blink approximately every 4 seconds as a reminder.
However, if S2 source becomes available during the time
DANGER
HAZARDOUS VOLTAGE
(Can Cause Severe Injury or Death)
Turn OFF all power before installation, adjustment, or removal of transfer switch or any of its components.
the ATS is waiting for the next impending exercise, the
ATS will not show a blinking indication but instead will
show the S2 Available LED as solidly on to indicate the
true condition of S2. Any Exercise event can be prema-
turely canceled by pressing the CANCEL key.
Note: pressing the CANCEL key in the middle of an
scheduled event does not cancel a set Exerciser, but
only cancels the current event.
To completely clear an already-set Exerciser
A set Exerciser can be completely cleared out of
memory by pressing and holding the CANCEL key
for at least 10 Seconds causing the blink indication
to stop.
If S2 fails to meet the criteria for a good source,
during an Exercise attempt, the Controller will
continue to hold the P-contacts closed for the
duration of the Runtime timer then wait for the next
scheduled exercise. If S2 fails during an Exercise, the
Controller will abort that exercise and wait till then
next scheduled exercise.