RS V10745 Hoja De Instrucciones página 7

Mechanical and physical
Card size:
Eurocard format 160 mm long x 100 mm wide x 62 mm high.
Weight:
700g approximately.
Connector:
32 wasy a & c DIN41612 type D.
Operating temperature range:
0°C to 40°C maximum ambient.
External connections
External connections are made via a 32 way a & c DIN41612 type D
connector. Alternatively, two drives may be connected to a power
supply unit (255-9093) by a system backplane (255-9087). This allows
all connetions to be made by screw terminals and connections to a two
axis stepper controller card.
Supplies
Pins 2 a & c
Motor supply input. Should be smoothed unregulated between +15V
and +36v maximum.
Pins 28 a & c
Logic supply input. Should be smoothed unregulated between + 15V
and 24V maximum.
Pins 30 a & c, 32 a & c
0V Common.
Motor
Pins 4 a & c, 6 a & c
Motor phase A should be connected between 4 a & c and6 a & c.
Pins 8 a & c, 10 a & cMotor phase B should be connected between 8
a & c and10 a & c.
Figures 2-6
To reverse sense or direction swap the connections to one phase. E.g.
swap phase B with phase B'.
Control input
Pin 14 a
Direction control input. Pulling this input low will reverse the direction of
rotation of the motor
Pin 14 c
Step pulse input. The motor will increment one step on a high to low
transition on this input. The pulse should be low for 10µS minimum.
Maximum frequency 20kHz.
Pin 16 a
Full/half step control input. If this input is high (or unconnected), full
step drive will be generated giving 200 steps per revolution of a hybrid
stepper motor. If it is pulled low, then half step drive will be generated
giving 400 steps per revolution. This input would not normally be
changed during use as the unit may enter a wave drive mode (full step
with only one phase on).
The use of half step reduces problems with resonance.
Pin 16 c
Reset input. Pulling this input low will set the internal logic to give the
home phase output and therefore the home output will be on. This may
also be used to reset an error condition such as overload or
overtemperature.
Pin 18 a
Output disable input. Pulling this input low will disable the motor output
current. There will then be no motor torque and it may be rotated by
hand.
These control inputs are CMPS schmitt trigger inputs opreating at +12V
with 10kΩ pull-up resistors and diode isolation. The control options are
as follows: fig 7-10
Monitor outputs
Pin 12 c
Home phase output. This output is low when the output phases are in
their initial home state pattern. This state is repeated in four full steps
or eight half steps.
Pins 20 a
Overload output. This output will go low and remain latched low, if an
overload or short circuit is detected. The motor output will also be
disabled. This condition may be reset by either pulling the reset input
low or removing the power
Pins 20 c
Overtemperature output. This output will go low if the thermal sensor
option is fitted and the heatsink gets too hot. This condition may be
latched by setting SW1-2 (LT) on so that the drive doesn't suddenly
become active when the heatsink cools. This condition may be reset by
either pulling the reset input low or removing the power. The motor
output may also be disabled automatically by setting SW1-1 (DT) on. If
no thermal sensor is fitted then this output will be low.
Current programming
Pin 18 c
Current program input. The motor current may be reduced from the
value set on the DIP switch by connecting a resistor from this input to
0V. This may be used to set the phase current by the connector the unit
is plugged into, or to reduce the motor current on application of an
external signal such as at standstill.
Multi-axis synchronisation
Pin 12 a
Sync input/output. This connection may be used to synchronise the
chopping frequency between a number of drive cards by connecting
them together. One drive is selected as the master; the others are
slaves and should have their chopping oscillators disabled by setting
SW1-4 on.
Auxiliary power outputs
Pin 26 a
Auxiliary +12V output. 50mA maximum.
Pin 26 c
Auxiliary +5V output. 50mA maximum.
On board oscillator (option)
Pin 22 a
VCO speed control input. Applying a control voltage between 0V and
+12V will proportionally vary the output frequency of the voltage
controlled oscillator (if fitted).
Pin 22 c
VCO output. This 12V CMOS output of the voltage controlled oscillator
(if fitted) may be connected directly the step pulse input (14 c).
Pin 24a
VCO base speed control. A resistance to 0V sets the base speed of the
voltage controlled oscillator (if fitted).
Pin 24 c
VCO run/stop input. Pulling this input low enables the voltage
controlled oscillator (if fitted).
Configuration
A four way DIP switch is provided for certain configuration options.
SW1-1 (DT)
Disable on overtemperature. If this switch is on and the thermal sensor
(option) gets too hot, then the motor output will be automatically
disabled to prevent overheating. If no thermal sensor is fitted, then this
should be left off.
SW1-2 (LT)
Latch overtemperature. If this switch is on and the thermal sensor
(option) gets too hot, then the overtemperature condition will be
latched. This will prevent unexpected re-energisation of the drive, when
the heatsink cools back down. The latched condition may be reset by
either pulling the reset input low or removing the power.
SW1-3 (CC)
Current control type. This switch determines whether the current
control chopping is executed on the upper drive transistors or the lower
drive transistors. This would normally be left off for more efficient use,
but may have small advantages of current control on low current
settings.
SW1-4 (SS)
Slave sync. If this switch is on, the chopping oscillator is inhibited. This
should only be used on slave units in multi-axis synchronised systems,
where another unit provides a master chopping signal.
V10745
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