Trane TR1 6002 Installation And Operation Manual page 101

Calculation of Resulting Reference
The calculation made below gives the resulting reference when para-
meter 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.
(Par. 205 Max. ref. - Par. 204 Min. ref.) x Ana. signal Term. 53 [V]
Ext. ref. =
Par. 310 Term. 53 Max. scaling - Par. 309 Term. 53 Min.scaling
(Par. 205 Max. ref. - Par. 204 Min. ref.) x Par. 314 Term. 60 [mA]
Par. 316 Term. 60 Max. scaling - Par. 315 Term. 60 Min.
scaling
Parameter 210, Reference Type, is programmed = Sum
(Par. 205 Max. ref. - Par. 204 Min. ref.) x Par. 211-214 Preset ref.
Res. ref. =
Parameter 210, Reference Type, is programmed = Relative
External reference x Par. 211-214 Preset ref.
Res. ref. =
100
100
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:
(Par. 205 Max. ref. - Par. 204 Min. ref.) x Ana. signal Term. 54 [V]
+
Par. 313 Term. 54 Max. scaling - Par. 312 Term. 54 Min. scaling
serial com. reference x (Par. 205 Max. ref. - Par. 204 Min. ref.)
+
+ External ref. + Par. 204 Min. ref. + Feedback setpoint
+ Par. 204 Min. ref. + Feedback setpoint
16384 (4000 Hex)
+
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