TP-6126 8/02 45Section 6 Accessories
6.4 In-Phase Monitor
Transfer switches are shipped with the in-phase monitor
disabled. The factory settings are shown in Figure 6-6.
Use the Setup Program to enable the in-phase monitor
and adjust the settings, if necessary. Refer to the Setup
Program Operation Manual.
Note: The in-phase monitor is not available on
programmed transition switches.
The in-phase monitor operates when both sources are
available, such as when transfering from the standby
back to the preferred source. The in-phase monitor
assures that transfer occurs when the two sources are in
phase. The phase angle measuring accuracy is ±5_.
The in-phase monitor does not operate when one
source is lost.
The OFF position LED on the user interface panel
flashes at 2 Hz when the in-phase monitor is operating.
Synchronization Output. The synchronization output
provides a contact closure that can be used to signal
some generator set controllers to synchronize the two
sources by adjusting the engine speed of a generator
set equipped with a variable-speed governor. See the
generator set operation manual. The system activates
the output after the synch output time delay. See
Figure 6-6.
Parameter Factory setting
Enable/disable Disable
Phase angle, degrees 0
Synch output time delay, seconds 30
Figure 6 -6 In-Phase Monitor Factory Settings
6.5 Programmable Inputs and
Outputs
Programmable inputs and outputs are available through
the controller main logic board terminal strip and
through optional input/output (I/O) modules.
Programmable monitoring, control, and fault detection
outputs are available through the terminal strip on the
controller or through the programmable input/output
(I/O) modules.
The main logic board inputs and outputs are
factory-assigned to the functions listed in Section 3.3.2.
The I/O modules are shipped with the input and output
assignments undefined. The Setup Program is required
to change the main logic board terminal strip input and
output assignments and also to set up and assign inputs
and outputs to the optional I/O modules. The table in
Figure 6-7 lists the available inputs. Figure 6-8 lists the
available programmable outputs.
Programmable Inputs
Low External Battery Fault
Peak Shave/Area Protection
Inhibit Transfer
Remote Bypass Time Delay
Remote Test
Forced Transfer to OFF (programmed-transition models
only; requires load shed accessory)
Remote Common Fault
Figure 6 -7 Programmable Inputs