Sharp DX-SX1H Service Manual page 49

IC504 RH-iX2842AFZZ: Spindle Motor Driver (IX2842AF)
Terminal
Pin No.
Name
1 PG Power GND terminal
2 H1+ Hall element 1 positive input terminal
3 H1- Hall element 1 negative input terminal
4* NC Not used
5 H2+ Hall element 2 positive input terminal
6 H2- Hall element 2 negative input terminal
7 VH Hall bias terminal
8 H3+ Hall element 3 positive input terminal
9 H3- Hall element 3 negative input terminal
10 SS Start/Stop switching terminal
11* TFLG Thermal protection monitor terminal
12 FG FG signal output terminal
13 BRK Break mode set terminal
14* NC Not used
In this unit, the terminal with asterisk mark (*) is (open) terminal which is not connected to the outside.
H1+ 2
H1- 3
H2+ 5
H2- 6
H3+ 8
DETE-
CTION
H3- 9
VH
7
HALL BIAS
EA
EC
18
ECR 17
10
S/S
Function
SG
15
DIRECTION
DETECTION
ER
LOGIC
EP=ER x EA
+ -
ABSOLUTE
VALUE
VTL
START/
STOP
16 20
Vcc PCI
Figure 49 BLOCK DIAGRAM OF IC
Terminal
Pin No.
Name
15 SG
16 VCC
17 ECR
18 EC
19* NC
20 PCI
21 VM
22 CS1
23* NC
24* NC
25* NC
26 A3
27 A2
28 A1
THERMAL
BREAK
PROTECTION
CIRCUIT
CIRCUIT
13
BRK
– 49 –
Function
Signal GND terminal
Power terminal
Torque instruction reference input terminal
Torque instruction input terminal
Not used
Current feedback phase compensating terminal
Motor power terminal
Current detection terminal 1
Not used
Not used
Not used
Drive output 3
Drive output 2
Drive output 1
FG
COMPARATOR
11
TSDF
DX-SX1H
21
VM
22
CS1
28
A1
27
A2
26
A3
1
PG
12
FG