Date Code 20010719 701 Motor Protection Relay
SEL-2020/2030 & SEL-701PC Compatibility Features
Fast Binary Message Definitions
D.15
The SEL-701 Relay performs the specified remote bit operation if the following
conditions are true:
The Operate code is valid.
The Operate validation = 4 • Operate code + 1.
The message checksum is valid.
The FASTOP port setting is set to Y.
The relay is enabled.
Remote bit set and clear operations are latched by the relay. Remote bit pulse
operations assert the remote bit for one processing interval (1/4 cycle).
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 SEL
OGIC
®
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 and any SEL
OGIC control equation timer to
control any of the output contacts.
A5E0 Fast Operate Remote Bit Control
Send the A5E0 command to operate Remote Bits RB1–RB4. The A5E0
command should contain the items listed in Table D.9.
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