Manual 37353A
MFR 13 Packages - Protection Relay
© Woodward
Page 67/91
General Interface Screens
Serial control
ON
Control via interface
ON/OFF
ON
................ Control via the serial interface is enabled and control orders received
via the interface are processed.
OFF
.............. Control via the serial interface is disabled and control orders received
via the interface are ignored.
Serial interface
Monitoring ON
Interface monitoring
ON/OFF
ON
................ The interface monitoring is enabled. The control expects to receive
bits 2 and 3 to be written to "00" in the control word by the master
control within 15 seconds after receiving the last message. If these
bits are not read within the prescribed time, and unsuccessful data
exchange is detected, and the alarm message "
Interface
" is is-
sued.
OFF
.............. The interface monitoring is disabled.
Interface fault
to relay 0000
Relay assignment for interface error
0 to 3 / 0 to 8
Relays may be configured to energize when an interface fault is detected. The de-
sired relays that to energize are configured here. The relays will only energize if the
parameter "
Serial interface monitoring
" is configured as "
ON
".
Inhibit via
Interface ON
Blocking via the interface
ON/OFF
ON
................ The protective functions messages (i.e. underfrequency) may be sup-
press via the interface. This operates in the same manner as terminals
5/6 "Blocking of protective functions / remote acknowledgement".
OFF
.............. The protective functions messages (i.e. underfrequency) cannot be
suppress via the interface.