Intelligent Motion Systems Excellence in Motion IM483H, Руководство по эксплуатации

Страница: 48 / 64

IM483H/IM805H Rev. R032206
46 47
IM483H/IM805H Rev. R032206
I n t e r f a c i n g t h e F a u l t a n d R e s e t I n p u t s
The IM483H/IM805H has a Fault
input located at P1:4. This can be
used to force a fault condition. When
pulled low the signal is latched and
the outputs will be disabled. The
fault condition can only be cleared
by resetting the drive or cycling the
power.
When interfacing this input, an open
collector output or blocking diode
is
REQUIRED
or damage may
occur to the internal fault detection
circuitry.
The IM483H/IM805H also has a
Reset Input. On power up, or if the
Reset Input is Closed, the internal
reset circuit will hold the input low
for 100 to 300 milliseconds. The
“holding” time does not begin until
the Reset Input is Opened. (See
Figure 7.11: Multiple Drives - One Reset
1N914 OR
EQUIVALENT
1N914 OR
EQUIVALENT
1N914 OR
EQUIVALENT
RESET
BUTTON
RESET
INPUT
UNIT #1
RESET
INPUT
UNIT #2
RESET
INPUT
UNIT #3
14
14
14
1N914 OR EQUIVALENT
INTERFACE
CIRCUIT
OR
FAULT IN/RESET
INPUT
FAULT IN /RESET
INPUT
When controlling multiple drives
with a single Reset you must install
blocking diodes at the input (Pin 14)
of each drive. Because of the slight
differences in Reset timing, this will
prevent the drives from latching the
Reset Input in the LOW state. (See
Figure 7.11.)
Circuit
Open
Circuit
Closes
Circuit
Open
at T=0
0 100 200 300
Milliseconds
+5 V
Internal Reset Hold Time
Starts When Circuit Opens
RESET BUTTON
Figure 7.9: Reset Timing
Figure 7.10: Interfacing the Fault In/Reset Inputs
W A R N I N G! When interfacing the FAULT IN/RESET input, an open collector, tri-state
output or blocking diode is REQUIRED or damage may occur. (See Figure 7.10.)
1
4.99k
Ω
4.99k
Ω
4.99k
Ω
4.99k Ω
4.99k Ω
1.27k Ω
2.21k
Ω
2.21k
Ω
+5V
FAULT IN
MSEL 0
MSEL 1
MSEL 2
MSEL 3
SCLK
DIR
ENABLE
P1
P2
Bottom View
RESET
Figure 7.8: IM483H/IM805H Inputs