Curtis Instruments AC F4-A User Manual

6 — COMMISSIONING
Curtis AC F4-A Motor Controller – August 2020 Return to TOC
pg. 144
The motor will start to rotate after next step. Do not take the vehicle down off the blocks.
WARNING
11. e automated test may take several minutes. When it is complete, the controller will have a
Parameter Change Fault. is is normal. Check whether other faults are present.
If there are any Characterization Error faults, read the number at System Monitor » Fault History
» Motor_Characterization_Fault_Type (i.e., Motor Characterization Error, ash code 8-7) and
reference the following table. All errors except “81” indicate the motor characterization data is
invalid. For error “81,” the data is valid but Encoder Steps must be set manually. Contact your Curtis
distributor or support engineer if the Motor Characterization Errors indicated cannot be resolved.
Programmer: System Monitor » Fault History » Motor_Characterization_Fault_Type.
Motor Characterization Errors
71 Failure to Write NV RAM
72 Temp Sensor Fault
73 Motor Hot
74 Controller Temperature Cutback
76 Undervoltage Cutback
77 Overvoltage Cutback
78 No Encoder Information
79 Current Regulator Tuning Out-of-Range
80 Current Regulator Tuning Out-of-Range
81 Encoder Signal Seen But Step Size Not Auto-Detected
82 Aborted Autocharacterization
12. Cycle (keyswitch) power. e motor control should now be operational, though likely poorly
optimized. e SlipGain test is very important. Perform the SlipGain test and get the result. e
following steps will complete the optimization process.
13. Run the SlipGain test (do not skip this critical step. ese test require the vehicle to be on the
ground, able to apply traction torque to the road).
Adjust the SlipGain parameter to provide maximum torque at stall (0 rpm motor speed). Note
that the present SlipGain value was determined by the auto-characterization procedure, and is
not the default value.
Programmer: AC Motor Setup » Induction Motor » Characterization Tests » SlipGain.
To determine the SlipGain setting, use either of the following two methods, with (a) being the
most accurate:
(a) Congure the vehicle to measure stall torque, by using a load cell/draw bar test. Note: You
will want to perform this test quickly to avoid excessive motor heating and provide the most
accurate results. First, turn o encoder fault detection.
Programmer: AC Motor Setup » Quadrature Encoder » Encoder Fault Setup » Fault Detection Enable (= Off ).
Test: While applying and holding full throttle, adjust SlipGain until you measure peak torque.
Quick Link:
SlipGain p.113

Curtis Instruments AC F4-A Specifications

General

Brand	Curtis Instruments
Model	AC F4-A
Category	Controller
Language	English