Operation Manual 37107F
MFR 3 - Multi Function Relay
Page 126/165
© Woodward
Relay Manager
The relay manager enables the user to assign combinations of functions to each relay of terminals 37/38, 47/48.
and 74-83. In order to achieve this, each possible function has its own number. A text, which describes a logical
condition for this relay's picking up, must now be entered in the configuration menu for each relay. Up to three
numbers may be involved in this link. The length of the text must not exceed 16 characters. The unit detects in-
correct function numbers or incorrect formula constructions, and does not accept these. The user must enter the
logical combination to be performed.
NOTE
The list of function numbers for the relay manager is located in Appendix E"Relay Manager" starting on
page 126.
Description of the programming
Permissible text and their meaning include:
+
OR operator
(logical function)
AND operator
(logical function)
-
NOT operator
(logical function)
1, 2, 3, ...
Function numbers
+/
the following applies: " " before "+"
Example
of logical
conditions
and relevant
texts
Requested function
Programming
Relay energizes if ...
... function 22 is enabled.
22
... function 22 is not enabled.
- 22
... function 2 and function 27 are enabled.
2 27
... function 2 or function 27 is enabled.
2 + 27
... function 5 is not or function 3 or function 13 are enabled.
3 + -5 + 13
... functions 4 or 7 or 11 are enabled.
4 + 7 + 11
... function 4 is not and function 7 is not and function 11 is not enabled.
- 4 -7 -11
... functions 4 and 7 and 11 are enabled.
4 7 11
... functions 7 and 11 are enabled simultaneously or function 4 is enabled.
4 + 7 11
... function 4 is not or function 7 is not or function 11 is not enabled.
-4 + -7 + -11
NOTE
If the user programs an illogical function, the entered line is deleted.
Programming of Relay Outputs
Parameter
230
Assignm.relay x
3+-8+13
[x = 1 to 7]
Relay manager: programming
user defined
Relay x [x = 1 through 7] is enabled if the logical condition in the second line is
met.
Example:
3 + -8 + 13
(OR link)
3
Alarm class 3 is enabled
-8
Operating mode MANUAL is not enabled
13
Alarm "Generator underspeed" is enabled