User`s manual
5 6
12 +INDEX Same as -INDEX, but commands a CW step motion. section on Jumpers).
13 #INT/EXT This input determines which set of switches will be
used for counting. A logic “1" or open selects the
Internal Index Count Number. A logic “0" selects the
count of an external counter module.
14 HOME SELECT This input selects the type of "Home" operation to
perform: When active low, H0 Homing Mode is
selected. It is a standard deceleration and stop on
switch operation. In essence, type H0 is a combination
of the HOME and SOFT limit commands. When active
high, H1 Homing Mode is selected. H1 is used for anti-
backlash protection. It performs a decelerate, reverse,
return off switch operation. NOTE: the switch must
remain closed during deceleration, reverse, and return
in H1 Mode.
15 FAST When active low, it is used in conjunction with
JOG/RUN to cause a fast run (base speed) operation
in the specified direction.
16 BUSY This open collector switch output is ON when the motor
is moving. This output can sink 0.5A and stand off
40Vdc maximum. A 10k ohm pullup resistor can be
jumpered in place to provide TTL levels (see section
on Jumpers).
17 CLOCK This output is an open collector output, 15
microseconds wide (minimum) that is the clock input
for the motor driver. It is buffered to assure adequate
drive for an LS-TTL input. This signal is internally
connected to the driver.
18 0VDC Ground (0Vdc).
19 DIRECTION Clockwise (CW) motion causes this output to be active
high i.e. logic “1". Counterclockwise motion causes
this output to be active low i.e. logic “0". This output
tells the motor driver which direction to run. This signal
is internally connected to the driver.
20 COMPLETE This open collector switch output turns on after the
indexing cycle is executed. The pulse width (time that
this output is on) is adjustable from about 12ms to
120ms (see Table). This output can sink 0.5A and
stand off 40Vdc maximum. A 10k ohm pullup resistor
can be jumpered in place to provide TTL levels. (see
FIGURE 2
SETTING PULSE WIDTH SETTING PULSE WIDTH
1 12 ms 6 79.5 ms
2 25.5 ms 7 93 ms
3 39 ms 8 106.5 ms
4 52.5 ms 9 120 ms
5 66 ms --
--
TYPICAL HOOK-UPS FOR BUSY AND COMPLETE OUTPUTS OF THE
MANUAL PRESET INDEXER BOARD:
K1 will energize immediately after completion of an index cycle and remain
energized for approximately an amount of time set by the “COMPLETE PULSE
WIDTH” POT. K2 will be energized throughout an index cycle.
MANUAL PRESET INDEXER TERMINAL (P2) DESCRIPTION
PIN FUNCTION DESCRIPTION
1 +5VDC +5VDC Regulated Voltage Supply Output
2 +12VDC Unreg +12VDC Unregulated Voltage Supply Output
3 0VDC Ground (0Vdc).
4 0VDC Ground (0Vdc).
5 9 - 12VAC IN 9 - 12VAC Voltage Supply Input for PCL451 version.
6 9 - 12VAC IN 9 - 12VAC Voltage Supply Input for PCL451 version.
BLD72 BILEVEL DRIVER
The BLD72 step motor driver employs a bilevel drive technique for high-
performance operation of step motors. The driver is designed to operate 4-
phase, 6 or 8 lead step motors, providing high torque output and higher start-
stop speeds. This driver is rated for output currents of 10 Amps/phase when
running and 7 Amps/phase at standstill. The BLD72 includes fault protection