Rockwell Automation 1336E IMPACT Adjustable Frequency AC Drive User Manual V 1-4.XX - Manual (Page 350)

B-12 Control Block Diagrams
The limit function lets you select the minimum and maximum values.
Once the value leaves the limit function, PTrim Select (parameter 51)
determines whether the value is used as a speed trim or a torque trim.
Understanding Encoder Switchover
To enter the: Enter a value in this parameter:
Minimum level PTrim Lo Limit (parameter 58)
Maximum level PTrim Hi Limit (parameter 59)
If this bit is set: Then:
0 The speed reference is used.
1 The torque reference is used.
Both bit 0 and bit 1 Both the speed and the torque references remain
unaffected.
Neither bit 0 nor bit 1