Manual 02007
DSLC Digital Synchronizer and Load Control
Woodward
81
The DSLC control also provides optional remote metering, control status and
alarm monitoring, and full remote control capability over the network when
connected to the appropriate LonWorks-compatible devices through a custom
installation. This chapter provides information on network specifications and the
optional capabilities of the DSLC control. Contact Woodward for full information
on optional devices to take advantage of these features.
Remote Metering
The following listing shows the actual values as applied to the DSLC control. The
values are not necessarily the same as the values displayed on the Hand Held
Programmer. The Hand Held Programmer displays values which are multiplied
by the PT and CT ratios (voltages may be displayed as line-to-line or line-to-
neutral voltages). Metering values are updated at a one-second rate and are
intended for monitoring purposes only. All the information is contained in three
structures of the following format and are labeled ELEC_PARA_OUT1,
ELEC_PARA_OUT2, ELEC_PARA_OUT3:
Output Structures
DATA 1 Unsigned Long
(16-BIT)
DATA 2 Long int
(16-BIT)
DATA 3 Long int
(16-BIT)
DATA 4 Long int
(16-BIT)
DATA 5 Long int
(16-BIT)
DATA 6 Long int
(16-BIT)
DATA 7 Long int
(16-BIT)
The following signals are available through the LonWorks network:
ELEC_PARA_OUT1
DATA1:
Discrete output and PT configuration mask.
0x0001
If set DO alarm relay driver is energized.
0x0002
If set DO low limit relay driver is energized.
0x0004
If set DO high limit relay driver is energized.
0x0008
If set DO load limit relay driver is energized.
0x0010
If set DO voltage lower relay driver is energized.
0x0020
If set DO voltage raise relay driver is energized.
0x0040
If set DO breaker open relay driver is energized.
0x0080
If set DO breaker close relay driver is energized.
0x0100
If set Delta configured Potential Transformers, else WYE.
0x0200 Not
used.
0x0400 Not
used.
0x0800 Not
used.
0x1000 Not
used.
0x2000 Not
used.
0x4000
This bit is set to indicate that this is the first type of electrical
parameter out.
0x8000
This bit is not set but is reserved for type of electrical parameter
out.
DATA2:
A-Phase voltage encoded as 10 times the voltage sensed on the
DSLC terminal.
V_a = (DATA2/10) * (PT_RATIO)
DATA3:
B-Phase voltage encoded as 10 times the voltage sensed on the
DSLC terminal.
V_b = (DATA3/10) * (PT_RATIO)
DATA4:
C-Phase voltage encoded as 10 times the voltage sensed on the
DSLC terminal.
V_c = (DATA4/10) * (PT_RATIO)