Basler Electric DECS-400 - Manual (Page 101)

9369700990 Rev R 89
Generator Undervoltage – Enable/Disable. The generator undervoltage pickup level and delay settings
are enabled and disabled by this setting.
Generator Undervoltage – Pickup Level. This setting configures the setpoint for generator undervoltage
protection. A setting of 0 to 575,000 Vac may be entered in 1 Vac increments.
Generator Undervoltage – Delay. This setting establishes the time delay for the generator undervoltage
protection function. A setting of 0.5 to 60.0 seconds may be entered in 0.1 second increments.
Field Overcurrent – Enable/Disable. The field overcurrent pickup level and dial settings are enabled and
disabled by this setting.
Field Overcurrent – Pickup Level. This setting configures the setpoint for field overcurrent protection. A
setting of 0.1 to 9,999.0 Adc may be entered in 0.01 Adc increments.
Field Overcurrent – Dial. This setting establishes the time dial setting for the field overcurrent protection
function. A setting of 0.1 to 20.0 seconds may be entered in 0.1 second increments.
Power Supply Low – Enable/Disable. Low power supply voltage protection is enabled and disabled by this
setting. The low power supply voltage threshold is fixed and not user-adjustable.
Loss of Field – Enable/Disable. The loss of field pickup level and delay settings are enabled and disabled
by this setting.
Loss of Field – Pickup Level. This setting configures the setpoint for loss of field protection. A setting of 0
to 3,000,000 Vdc may be entered in 1 Vdc increments.
Loss of Field – Delay. This setting establishes the time delay for the loss of field protection function. A
setting of 0 to 9.9 seconds may be entered in 0.1 second increments.
Field Overtemperature – Enable/Disable. The field overtemperature pickup level and delay settings are
enabled and disabled by this setting.
Field Overtemperature – Pickup Level. This setting configures the setpoint for field overtemperature
protection. A setting of 0 to 572
°C may be entered in 1°C increments.
Field Overtemperature – Delay. This setting establishes the time delay for field overtemperature
protection. A setting of 0.1 to 60.0 seconds may be entered in 0.1 second increments.
24 Volts/Hz
24 Volts/Hz settings are shown in Figure 55 and described in the following paragraphs.
24 Volts/Hertz – Option. This setting enables and disables volts per hertz (overexcitation) protection.
24 Volts/Hertz – Inverse Time Curve Exponent. This setting is used to configure the inverse timing curve
of the 24 protection function. An exponent of 0.5, 1, or 2 may be selected.
24 Volts/Hertz – Inverse Time Pickup Setpoint and Pickup Time Dial. These settings are used to establish
an inverse square timing characteristic to approximate the generator end-iron heating characteristic
during overexcitation. A per-unit Pickup Setpoint of 0.50 to 6.00 may be entered in increments of 0.01. A
Pickup Time Dial of 0 to 9.9 may be entered in increments of 0.1.
24 Volts/Hertz – Reset Time Dial. This setting establishes a linear reset characteristic that approximates
the effects of generator end-iron cooling. A Reset Time Dial setting of 0 to 9.9 may be entered in
increments of 0.1.
24 Volts/Hertz – Definite Time Pickup #1, #2 and Definite Time Pickup #1, #2. Two sets of definite
Volts/Hertz pickup settings can be used to establish two fixed-time overexcitation pickup settings. Definite
Time Pickup #1 and #2 have a setting range of 0.5 to 6.00 with an increment of 0.01. Definite Time Delay
#1 and #2 may be set over a range of 0.5 to 600.00 seconds in 0.05 second increments.
DECS-400 BESTCOMS™ Software