Rockwell Automation 865 Differential Protection Relay - Manual (Page 11)

Overview 1-3
865-UM001A-EN-P – July 2009
User Interface
The relay can be controlled in three ways:
•
Locally with the push-buttons on the relay front panel
•
Locally using a PC connected to the serial port on the front panel
or on the rear panel of the relay (both cannot be used
simultaneously)
•
Via remote control over the remote control port on the relay rear
panel.
Operating Safety
A T T E N T I O N A T T E N T I O N The terminals on the rear panel of the relay may
carry dangerous voltages, even if the auxiliary
voltage is switched off. A live current
transformer secondary circuit must not be
opened. Disconnecting a live circuit may cause
dangerous voltages! Any operational measures
must be carried out according to national and
local handling directives and instructions.
Carefully read through all operation instructions before any
operational measures are carried out.