Schweitzer Engineering Laboratories SEL-351 - A5 E3 Fast Operate Breaker Control

Date Code 20001006 Configuration, Fast Meter, and Fast Operate Commands D-11
SEL-351 Instruction Manual
It is common practice to route remote bits to output contacts to provide remote control of the relay
outputs. If you wish to pulse an output contact closed for a specific duration, SEL recommends
using the remote bit pulse command and SELOGIC
®
Control Equations to provide secure and
accurate contact control. The remote device sends the remote bit pulse command; the relay
controls the timing of the output contact assertion. You can use any remote bit
(RB1 through RB8), and any SELOGIC Control Equation timer (SV1 through SV16) to control
any of the output contacts (OUT1 through OUT11). For example, to pulse output contact OUT4
for 30 cycles with Remote Bit RB4 and SELOGIC Control Equation timer SV4, issue the following
relay settings:
via the SET L command,
SV4 = RB4 SV4 input is RB4
OUT4 = SV4T route SV4 timer output to OUT4
via the SET command,
SV4PU = 0 SV4 pickup time = 0
SV4DO = 30 SV4 dropout time is 30 cycles
To pulse the contact, send the A5E006430DDB command to the relay.
A5E3 Fast Operate Breaker Control
The external device sends the following message to perform a fast breaker open/close:
Data Description
A5E3 Command
06 Length
1-byte Operate code:
31 - OPEN breaker
11 - CLOSE breaker
1-byte Operate Validation: 4 ⋅ Operate code + 1
checksum 1-byte checksum of preceding bytes
The relay performs the specified breaker operation if the following conditions are true:
1. Conditions 1-5 defined in the A5E0 message are true.
2. The breaker jumper (JMP2B) is in place on the SEL-351 Relay main board.
ID Message
In response to the ID command, the relay sends the firmware ID (FID), boot firmware ID (BFID),
firmware checksum (CID), relay TID setting (DEVID), Modbus device code (DEVCODE) – for
use by SEL-2020 and SEL-2030 Communications Processors, relay part number (PARTNO), and
configuration string (CONFIG) – for use by other IEDs or software. A sample response is shown
below; responses will differ depending on relay model, settings, and firmware.
Courtesy of NationalSwitchgear.com