APPENDIX B
B-6
ACTION REFERENCEMALFUNCTION
3. Check breaker position. Due to applications where
the potential transformers are located on the local
side of the breaker, the 565/575 must see the
breaker closed at terminals 9, 10, and 11 before
issuing an undervoltage trip. This prevents the
relay from issuing an undervoltage trip each time
the breaker is opened.
1. Check if access setpoint is disabled via communi-
cation with Relaycom
®
.
Functioning in series with the hardware access
jumper is the relay’s Setpoint Access/Software
Code setpoint that is only visible when the Secu-
rity Feature setpoint is enabled. When the 565/
575 is shipped from the factory, the Setpoint
Access/Software Code setpoint is enabled and
the Security Feature is disabled. Therefore, you
cannot see the Setpoint Access/Software Code
setpoint and only the hardware jumper at termi-
nals 33 and 34 will determine whether you can
store setpoints.
If you now establish communications with a 565/
575 using Relaycom
®
, the Setpoint Access/Soft-
ware Code setpoint can be disabled independent
of the Security Feature setpoint. Relaycom
®
calls
this “Local Setpoint Access.” Suppose one disa-
bled “Local Setpoint Access” using Relaycom
®
.
The next time one tries to store a new setpoint
using the 565/575 keypad, they will get the “Illegal
Access” message even though the access jumper
is in place. This will cause confusion because the
Security Feature is disabled and this normally
means the Setpoint Access/Software Code set-
point is enabled.
This is not the case. The Setpoint Access/Soft-
ware Code setpoint is disabled and you cannot
view it because the Security Feature setpoint is
also disabled. To make matters worse, you cannot
enable the Security Feature setpoint to allow you
to enable the Setpoint Access/Software Code
setpoint. Setpoint access is disabled. The only
way to re-establish setpoint access is to enable
“Local Setpoint Access” in Relaycom
®
.
Setpoints page 1.
22. “Illegal Access,” even with
the jumper installed.
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