101
Calculation of Resulting Reference
The calculation made below gives the resulting reference when
parameter 210, Reference Type, is programmed for Sum and Relative,
respectively. In Open Loop, parameters 418 and 419, Setpoints 1 and
2, should be set to 0. If they are not set to 0, parameter 417, Feedback
Function, will affect the reference.
External reference is the sum of references from terminals 53, 54,
60 and serial communication. The sum of these can never exceed
parameter 205, Maximum Reference.
External reference can be calculated as follows:
+ External ref. + Par. 204
Min. ref.
+ Feedback setpoint
External reference x Par. 211-214
Preset ref.
Parameter 210, Reference Type, is programmed = Relative
+ Par. 204
Min. ref.
+ Feedback setpoint
Res. ref. =
100
Parameter 210, Reference Type, is programmed = Sum
Res. ref. =
(Par. 205
Max. ref. -
Par. 204
Min. ref.
) x Par. 211-214
Preset ref.
100
Ext. ref. =
Par. 310
Term. 53 Max. scaling -
Par. 309
Term. 53 Min. scaling
(Par. 205
Max. ref. -
Par. 204
Min. ref.
) x Ana. signal
Term. 53
[V]
+
Par. 313
Term. 54 Max. scaling -
Par. 312
Term. 54 Min. scaling
(Par. 205
Max. ref. -
Par. 204
Min. ref.
) x Ana. signal
Term. 54
[V]
+
Par. 316
Term. 60 Max. scaling -
Par. 315
Term. 60 Min. scaling
(Par. 205
Max. ref. -
Par. 204
Min. ref.
) x Par. 314
Term. 60
[mA]
+
serial com. reference x (Par. 205
Max. ref. -
Par. 204
Min. ref.
)
16384 (4000 Hex)
