9440300990 28-41
DECS-250 Modbus
®
Communication
Generator Current IB in amps
Generator Apparent Power in kVA
Generator Real Power in kW
Generator Reactive Power in kvar
Generator Frequency in Hertz
Var/PF Controller Output in Volts
Phase Angle Between Phase B Voltage
and Current
Current Input for Load Compensation
Error Signal to Autotracking Loop
Status of Front Panel LEDs
(bit flags, 0 = off, 1 = on for all LEDs
except Null Balance and Internal
Tracking, which are reversed): b0 = Null
Balance, b1 = Tracking, b2 = Pre-
position, b3 = Upper Limit, b4 = Lower
Limit, b5 = Edit, b6-b15 = unassigned
Protection Status Bit Flags 1
(0 = clear, 1 = condition present): b0 =
field overvoltage, b1 = field overcurrent,
b2 = gen. Undervoltage, b3 = gen.
overvoltage, b4 = underfrequency, b5 =
in OEL, b6 = in UEL, b7 = in FCR
mode, b8 = loss of sensing voltage, b9
= setpoint at lower limit, b10 = setpoint
at upper limit, b11 = gen. failed to build
up, b12 = gen. below 10Hz, b13 =
unassigned, b14 = exciter diode open,
b15 = exciter diode shorted.
Active Operating Setpoint in Percent
Annunciation Status Bit Flags 1
(0 = clear, 1 = annunciation present): b0
= field overvoltage, b1 = field
overcurrent, b2 = gen. undervoltage, b3
= gen. overvoltage, b4 =
underfrequency, b5 = in OEL, b6 = in
UEL, b7 = in FCR,
b8 = loss of sensing voltage, b9 =
setpoint at lower limit, b10 = setpoint at
upper limit, b11 = gen. failed to build up,
b12 = gen. below 10Hz,
b13 = unassigned, b14 = exciter diode
open, b15 = exciter diode shorted
Protection Status Bit Flags 2
(0 = clear, 1 = condition present) b0 =
loss of field, b1 = in SCL, b2 – b15 are
Annunciation Status Bit Flags 2
(0 = clear, 1 = condition present) b0 =
loss of field, b1 = in SCL, b2 – b15 are