Basler DECS-150 User Manual

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Front Panel DECS-150
Table 2-1. Front Panel Indicators Descriptions
LED Name
LED Description
Manual Mode
Active
This green LED lights when the DECS-150 is operating in Manual (FCR) mode.
Manual mode is enabled through BESTCOMSPlus
®
software.
VAR/PF Active
This green LED lights when the DECS-150 is operating in either var or power
factor mode. Var/power factor control is enabled through BESTCOMSPlus
software. By default logic, Contact Input 7 (52 J/K) disables var/power factor
control. An open contact enables the DECS-150 to control the machine reactive
power in either the var or power factor mode. The contact has no effect when this
function is not enabled in BESTCOMSPlus.
Loss of Sensing
This red LED lights when a loss of machine sensing voltage is detected. In
BESTlogic™Plus, status inputs can be connected to other logic elements and to a
physical relay output to annunciate the condition and to initiate corrective action.
Depending on the protective action selected, the DECS-150 will either shut down
or transfer to Manual mode. The Loss of Sensing LED will light for five seconds
when the DECS-150 is powered up following a loss of sensing shutdown.
Overexcitation
Limiter Active
This red LED lights when the field current exceeds the programmed
overexcitation limit. It stays lit until the overexcitation condition ceases or the
overexcitation time delay expires and the DECS-150 shuts down. The
Overexcitation Limiter Active LED will light for five seconds when the DECS-150
is powered up following an overexcitation limiting shutdown.
Underexcitation
Limiter Active
This red LED lights when the sensed, reactive power (leading vars) decreases
below the programmed underexcitation limit. It stays lit until the underexcitation
condition ceases or the underexcitation time delay expires and the DECS-150
shuts down. The Underexcitation Limiter Active LED will light for five seconds
when the DECS-150 is powered up following an underexcitation limiting
shutdown.
Overvoltage
This red LED lights when machine output voltage exceeds the adjustable setpoint
for the duration of the adjustable time delay. The DECS-150 shuts down (if
hardware shutdown is enabled). In BESTlogicPlus, status inputs can be
connected to other logic elements and to a physical relay output to annunciate the
condition and to initiate corrective action. The Overvoltage LED will light for five
seconds when the DECS-150 is powered up following an overvoltage shutdown.
Overexcitation
This red LED flashes when the field voltage exceeds the field overvoltage pickup
threshold for the duration of the time delay. After the time delay expires, this red
LED will light continuously and the DECS-150 will shut down. The Overexcitation
LED will light for five seconds when the DECS-150 is powered up following an
overexcitation shutdown.
Underfrequency
Active
This red LED lights when the machine frequency decreases below the
underfrequency setpoint and the DECS-150 is regulating on the selected volts per
hertz curve.
Exciter Field
Current Limit
This red LED lights when the field current is too high, which could result in
damage to the regulator. This condition also shuts down excitation. A restart is
required to begin regulating again.
PSS Active
This red LED lights when the optional integrated power system stabilizer (PSS) is
enabled and can generate a stabilizing signal in response to power system
disturbances.
Custom Alarm
This red LED lights when the Set input of the CUSTOM_LED logic element is
true. Refer to the BESTlog icPlus section for more information.

Basler DECS-150 Specifications

General

Brand	Basler
Model	DECS-150
Category	Control Systems
Language	English