Manual 37351A
MFR 11 Packages - Protection Relay
© Woodward
Page 45/59
NOTE
The following screen(s) will only be displayed if the unit is equipped with the corresponding protective
function(s), the protective function is enabled, and the parameter "
Change relay allocation
" is en-
abled.
xxxxxxxxxxxxxxxx
to relay 0000
Assign protective function output to relays
0 to 4/8
Each digit in this parameter is used to assign one relay to a protective function. Up
to four relay outputs may be assigned to a protective function. The control may be
configured as follows:
0
.................... If the protective function is not assigned to a relay, a "0" must be
configured in the display. None of the relay outputs will energize/de-
energize when the corresponding protective function trips if all four
relay assignments are configured with a "0". A message for the pro-
tective function will still be visible in the unit display.
1/2/3
............. Relay 1 (terminals 9/10), relay 2 (terminals 11/12/13), and/or relay 3
(terminals 14/15/16) are available for assignment to protective func-
tion on all units.
4/5/6/7/8
....... Relay 4 (terminals 19/20/21), relay 5 (terminals 22/23/24), relay 6
(terminals 25/26/27), relay 7 (terminals 28/29/30), and/or relay 8
(terminals 31/32) are available for assignment to protective function
if the unit is equipped with either the
G59
or
G59N
Packages
.
Example
....... An MFR 11/
G59
has a protective function that is required to output a
signal to relays 2,4, and 7. That protective function relay assignment
should be configured as 2470. The sequence of the numbers has no
significance in the functionality or operations.
A relay output may be assigned to more than one protective function. This will
cause the relay to issue a signal when any of the configured protective functions
trip. If a relay should only issue a signal when a specific protective function trips,
then the relay must not be assigned to any other protective function.
Monitoring of ... output to relay
Indication on display instead of
xxxxxxxxxx
Overvoltage, level 1
Standard
Overvoltage 1
Overvoltage, level 2
Standard
Overvoltage 2
Undervoltage, level 1
Standard
Undervoltage 1
Undervoltage, level 2
Standard
Undervoltage 2
Zero voltage
Packages SC
/
SC+N
Zero-voltage
Asymmetry Standard
Asymmetry
Overfrequency, level 1
Standard
Overfrequency 1
Overfrequency, level 2
Standard
Overfrequency 2
Underfrequency, level 1
Standard
Underfrequency 1
Underfrequency, level 2
Standard
Underfrequency 2
Vector/phase shift
Packages VDEW
/
G59
/
G59N
Phase jump
df/dt (ROCOF)
Packages G59
/
G59N
df/dt
Centralized alarm
Collect Response
Table 6-2: Protective function output to relay
NOTE
The "ready for operation" function is always assigned to relay 1. However, other protective functions
may also be assigned to relay 1 additionally. Relay 1 is always configured as Normally Closed (break
contact) and will de-energize if the unit is not ready for operation.