Schweitzer Engineering Laboratories SEL-387E - A5 D1 Fast Meter Data Block

Date Code 20080110 Configuration, Fast Meter, and Fast Operate Commands D-5
SEL-387E Instruction Manual
xx 02 if VIWDG=1; 05 if VIWDG=2; 08 if VIWDG=3; FF if VIWDG=12
09 VAWX
0A VBWX
0B VCWX
4-bytes Scale factor (200 • I
nom
) • CTR1 Winding 1
4-bytes Scale factor (200 • I
nom
) • CTR2 Winding 2
4-bytes Scale factor (200 • I
nom
) • CTR2 Winding 3
xxxxxxxx Scale factor 100 • PTR voltage
3C23D70A Scale factor (1/100)
1-byte Reserved
1-byte Checksum
A5D1
Fast Meter Data Block
In response to the A5D1 request, the relay sends the following block:
Data
Description
A5D1 Command
74 Message length (116 bytes)
1-byte Status byte
Bit
Usage
2 Self-test warning
3 Self-test failure
4 Settings change
52-bytes Integers for the following: IAW1, IBW1, ICW1, IAW2, IBW2, ICW2,
IAW3, IBW3, ICW3, VAWX, VBWX, VCWX, VDC (Imaginary values
first, followed by Real values). Note: The imaginary value for VDC is
always zero.
8-bytes Time stamp
50-bytes Digital banks—targets 0 through 49
1-byte Reserved
1-byte Checksum
A5B9
Fast Meter Status Acknowledge Message
In response to the A5B9 request, the SEL-387E Relay clears the Settings change (STSET) bit in
the Status Byte of the Fast Meter messages (A5D1, A5D2, and A5D3). The bit is set on power
up and on settings changes. If the STSET bit is set, the external device should request the A5C1,
A5C2, and A5C3 messages to determine if the scale factors or line configuration parameters
have been modified. No return response is given to the A5B9 request.
A5C2/A5C3 Demand/Peak Demand
Fast Meter Configuration Messages
In response to the A5C2 or A5C3 request, the relay sends the following block:
Data
Description
A5C2 or A5C3 Command; Demand (A5C2) or Peak Demand (A5C3)
A8 Message length (168 bytes)