Service manual

Avantra 36/44 Service Manual
4-10 Maintenance
Potentiometers:
N-MIN : Adjustment of minimum speed (R219)
N-MAX. : Adjustment of maximum speed (R203)
I-OFFSET : Adjustment of offset in current amplifier circuit. Factory adjusted and
sealed; do not adjust.
Figure 4-3 LUTH Motor Board (LMB).
➀ –To secondary transformer (6/5). ➁ –Not used.
➂ –To motor. ➃ –Not used. ➄ –Not used.
➅ –Motor (Pin 1 = M+, Pin 2 = M-) top signal (safety switch).
➆ –Tacho feedback to CPU. ➇ –Optical interrupter.
➈ –Do not change. ➉ –Optical link with CPU board.
R219 R203
N-Min N-Max
24VAC M– M+
X102 X2
X4 X4 X3 X1
Fuse
– 0,5A
– 5A
Current
Select
P102
I-offset
Motor Board LMB.02
CPU
Board
➀➁➂
➈
➃ ➄ ➅ ➆ ➇
➉