Emotron CDU/CDX 48-026 [49/82] Tips tricks and troubleshooting

Emotron CDU/CDX 48-026 [49/82] Tips tricks and troubleshooting
EMOTRON DSV 5445/5444
21.04.09 Emotron
Page 49
9 TIPS, TRICKS AND TROUBLESHOOTING
1) Motor reacts independently from the drive step with slow speed and draws a high
current:
When high current is drawn at a low speed, the A6 signal is present for several
seconds or the torque curve reaches the limit. This state causes considerable
overload of the motor and converter! Stop the run immediately and seek the fault.
The rotating field at motor is incorrect or the rotary encoder is not running with the motor.
PPR number is not suitable (1024 1Vpp is standard -> check memory cell 0E4A)
Number of poles "31" is incorrect or exchange two motor phases
2) Encoder error alarm or severely uneven running:
Cable wired incorrectly or encoder defective
TTL encoder instead of 1Vpp fitted (check memory cell 0E3E)
Coupling is defective or encoder screen is not connected at both ends
Pin 12 in connector X3 must have contact to protective earth at DSV
3) No confirmation signal from signal "A0" (controller ON):
Contacts bouncing severely: For versions prior to 19.03.99, load update and set Schmitt flag
(0E3Ch), switch "ISP" and "E0" simultaneously (automatic bounce suppression).
One of the enable signals "ISP" or "E0" not present, check wiring
"E0" was not removed after end of run, measure signal
4) Direct approach does not function, since signal "Ve" removed in levelling zone:
"A5" and "INT2" must be connected for programs on the basis of 7SZ, 9SZ, 10SZ.
The threshold 0E12 may not fall below the value of Ve with standard winches (40 MHz).
5) Motor cannot bear the load (pull it out of the catch) or stalls:
Check the motor terminal plate (star or delta connection)
Incorrect dimensioning of a drive device (efficiency of the system "Pay attention to machine
top/bottom" or poor efficiency of "back-pack suspension with slideways")
Rotor time constant not suitable for motor. "t" is usually smaller for conversion of old systems
from Silumin motors. The rotor flux can also be too low in individual cases (check table value)
6) Motor buzzes at standstill or hums loudly at low speeds:
Gain values to high
Reduce P-gain stop, start and run
Encoder not located at the position with the largest mass inertia
7) Driving wheel jerks backwards noticeably during start:
40MHz: I-gain run and start not low enough, P-gain stop too low
50MHz: I-gain stop counter value too high, start delay value too large
8) Drive jerks during start (starting jerk)
Soft start time too short, run-up rounding to steep
Soft speed not matched to static frictional (too high)
With epicyclical gears: Increase I-gain run and P-gain stop
With old worm gears: Select high I-gain run and small P-gain stop

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