Samsung SC-140 Service Manual page 18

SCR-140(A4)-en 99.3.15 8:52 AM ˘ ` 26
PIN ASSIGNMENT
TERMINAL
NO.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
TERMINAL FUNCTION
SYMBOL
L b (G) b-phase upper side power transistor
(base)output terminal
L a (G) a-phase upper side power transistor
(base)output terminal
L a a-phase output terminal
V M2 Supply voltage terminal for motor drive
SB RUN/STOP control terminal
R F1 Output current detection terminal
GND2 GND
C RF Output current filter terminal
N.C
FGO FG amplifier output terminal
BRK Brake mode select terminal
H b - b-phase negative hall signal input
terminal
H b + b-phase positive hall signal input
terminal
H a - a-phase negative hall signal input
terminal
H a + a-phase positive hall signal input
terminal
H c + c-phase positive hall signal input
terminal
H c - a-phase negative hall signal input
terminal
HB Hall element bias terminal
Cd Forward/reverse changeover gain
adjustment terminal
V CC Supply voltage terminal for control
circuits
V C Control amplifier inputer terminal
V ref Control amplifier reference voltage
input terminal
OSC Triangular wave oscillation terminal
GND1 GND
R F2 Output current detection terminal
MS Mode select terminal
L C (G) c-phase upper side power transistor
(base) output terminal
L C c-phase output terminal
V M1 Supply voltage terminal for motor drive
L b b-phase output terminal
REMARKS
Keep open.
Keep open.
Connect to the coil.
Connect to V
H-:RUN, L:STOP
Sets limiter current value.
Connect to R
between this terminal and GND.
-
Connect a capacitor between this
terminal and GND.
Outputs a signal whose
frequency is determined by the
CD rotation frequency.
Output mode when V C >V ref
Connect to hall element output
terminal.
Connect to hall element output
terminal.
Connect to hall element output
terminal.
Connect to hall element output
terminal.
Connect to hall element output
terminal.
Connect to hall element output
terminal.
Open collector output, Connect to
the negative side of hall element
bias line.
Adjust a rotation direction
changeover gain
V CC(opr) =4.4~5.5V
Use the control signal as input.
Use the reference voltage for
the control amplifier as input.
Connect a capacitor between
the control amplifier as input.
-
Sets limiter current value.
Connect to R F1 externally and
between this terminal and GND.
Determines output mode.
Keep open.
Connect to the coil.
Connect to V M2 externally.
Connect to the coil.
26 37
externally.
M1
externally and
F2