Veichi AC310, Service Manual

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AC310 Universal AC Drive Service Manual
Chapter 3 AC300CON-A1.0 Control Board
Introduction and Brief Detection and
Maintenance
3.1 Summary of IC Related Information
Bit number Name Control Information Specification
O9, O1, O3,
02, O4
General
Optocoupler
Multi-function terminals X1-X5
in sequence
EL3H4
O7 General
Optocoupler
Relay switch signal EL3H7(B)(TA)-G
O6 General
Optocoupler
Y terminal signal EL3H7(B)(TA)-G
U20 Op-Amps Analog AI1, AI2 inputs LF353DRG4
U12 Op-Amp Analog AO output TL084IDR
U4 Op-Amp Current sampling (IU, IV, IW) TL084IDR
U4 Op-Amp VPN Op amp TL084IDR
U9 Comparator IU Overcurrent/wave-by-wave
current limit comparator LM239DR
U8 Comparator IV Overcurrent/wave-by-wave
limit comparator
LM239DR
U7 Comparator IW Overcurrent/wave-by-wave
current limit comparator LM239DR
U10 Octal Driver Drive Signal:
UH/UL/VH/VL/WH/WL
SN74ACT244PWR
U1 485 Communication 485 Communication Chip SP485EEN-L
U16 485 Communication External 485 keyboard
communication SP485EEN-L
U6 Memory Memory IC AT24C32D-SSHM-
T
U3 Programmable IC CPU SN74LV74ADR
U11 Logic Chip System Failure Hardware
Blocking Point IC
SN74LV74ADR
U15 Reset Chip Reset Chip SP809EK