SECTION 10: TROUBLE-SHOOTING GUIDE T200 User's Manual
PAGE 10-19
10.5.5 Warning Type: U5 (Velocity Error Warning) on 7-Segment Display
The U5 Warning is displayed when the T200 velocity error exceeds the user-programmed range (see Section 6.6.2 for an
overview of velocity error monitoring). The T200 can generate torque in the motor when U5 is present.
Table 18: Causes of U5 on 7-Segment Display
Cause Check/[Correction]
Loop Tuning not
Adequate
The velocity loop tuning will determine the amount of velocity error, which occurs during
a specific movement. Increase the gains in the loop if possible.
[The P and I gains need to be set appropriately for the load (see Section 6.6.2, Velocity
Loop Tuning). In certain cases the velocity observer can be used to significantly increase
the value of these gains (see Section 6.6.2, Velocity Observer Tuning and Usage).]
Programmable
Torque and Velocity
Limits too Low
The user configures the manual and automatic velocity limits, for the application at hand.
These limits may be set too low.
[Increase the velocity and torque limits, when ensuring the safe operation of the machine.]
Drive has been
placed in Manual
Mode
The drive has been commanded into manual mode, either through the AUTO-MAN digital
input on J1 or through the CAN interface.
[Check why the T200 has been forced into manual mode:
Check the wiring of the AUTO_MAN input
Check the safety status of the machine control system.]
Analog Torque Limit
is Active
The analog torque limit is an analog interface, which allows dynamic limiting of torque.
[If the input is not used, then short the SAIN+ and SAIN- pins at the J1 connector.]
Excessive Static or
Dynamic Load
The machine bearings or other parts may have become seized or severely worn. This can
cause extra friction or load torques.
[Check the freedom of rotation of the load, including bearing wearing and load alignment.]
Movement's Duty-
Cycle is Excessive
The acceleration and deceleration of the movement, as well as the frequency of movement
may be excessive for the T200.
[Decrease the duty cycle, by reduction of the acceleration and deceleration, and/or the
frequency of the movement.]
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