Purelogic PLD86 User manual

01. General information
02. Delivery set
03. Technical features
04. Driver installation and ventilation
04. Driver functional capabilities
05. Control Signal Connections to the driver
06. Current and power option
07. Stepper motor connection to the driver
08. Protection functions, setup
09. Step division option
10. Terms of Warranty
INSTRUCTION MANUAL
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PLD86
New generation stepper motor driver

Edition from 28.08.2015 3
PLD86. New generation stepper motor driver
www.purelogic.ru8 (800) 555 63 74
01
02
General information
Delivery set
Technical features
PLD86 is a modern and available microstep stepper motor driver of a
new generation.
The driver has inbuilt coil short-circuit protection, back EMF effect
protection, inbuilt automatic compensator of normal speed stepper
motor resonance, morphing, polarity reversal power protection and soft
starter scheme; dumper.
The driver works with standard control protocol STEP/DIR/ENABLE.
All driver’s control inputs are optoisolated and logic levels 2.5V, 3.3V,
5V compatible.
The module is AUTO-SLEEP mode supplied which is turned on when
there is no STEP signal.
The device is optimal for control of bipolar and unipolar Purelogic R&D
stepper motors PL86 series (mounting to stepper motor housing is
available). Work with other stepper motors is also possible.
• New generation stepper motor driver PLD86 — 1 pcs.
• Instruction manual — 1 pcs.
03
01. General information
Stepdivision (microstep)
Max shaft rotation frequency
Module power supply
Insulation resistance
Unit weight without packaging
STEP Max signal frequency
Operating current of stepper motor driver
Inbuilt generator frequency
Operating temperature
320 kHz (1:32 step division)
2.3…8А, fig. 2
~2kHz
0...50 °С
1:4, 1:8, 1:16, 1:32
50 cycles per second or 3000 cycles
per minute (PL86H113, 75V,
stepdivision 1:32, 270 kHz)
18...80V (bogey value 75V)
500 mOhm
0,3 kg
!Check www.purelogic.ru for more information.
Power off device before making any connections and mode operation
changing.
Do not mount the power switch after the power source (on the driver
power line). power switch should be installed before power supply, at
~220V side.
Do not connect the drivers in series, only ‘star’ connection is allowed.
Do not connect power supply’s «-» to ground, mass, housing, etc.
Strictly observe the polarity of power supply and control signals
connections.
01 General information 01 General information

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03. Technical features
Fig. 1. PLD86 driver dimensions
grooves
In order to ensure optimal thermal conditions of installation of the
equipment inside the rack CNC control must be carried out, adhering
to the scheme below:
Installing environmental conditions
1) Working environment temperature: 0~45 °C.
2) Work environment humidity: lower than 40~80% (non condensing).
3) Storage environment temperature: -40~55 °C.
4) Storage environment humidity: lower than 80% (non condensing).
5) Vibrate: lower than 0.5G.
6) Avoid direct sunlight.
7) Prevent oil mist, erosion of salt.
8) Prevent corrosive liquid, gas.
Driver installation and ventilation 04

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06. Driver functional capabilities
The driver operates with standard signals STEP/DIR/ENABLE.
The signals are transmitted to differential optoisolated inputs.
Differential scheme is used to increase noise immunity and gives an
opportunity to connect the module to any driver controlling system
(controller). With STEP signal, STEP LED intensity changes.
The scheme of differential input device and connection method to the
controller with outputs ‘open collector’ type is shown in fig. 2. Control
signals connection is performed according to fig. 2.
Controlling signals connection to the module is carried out according to
the scheme which is depicted on driver’s case (fig. 5).
STEP signal characteristics — working voltage 2.5V, 3.3V, 5V (you may
need extra current-limiting resistor connection), current consumption
up to 20mА, min signal duration is 2ms. The step is carried out on the
signal leading edge.
DIR signal characteristics — working voltage 2.5V, 3.3V, 5V (you may
need extra current-limiting resistor connection), current consumption
up to 20mА, action time is 200 nsec before/after front edge STEP.
ENABLE signal characteristics — working voltage 2.5V, 3.3V, 5V
(you may need extra current-limiting resistor connection), current
consumption up to 20mА, action time is 100 ms. Logic unit (voltage is
applied to the input) – stepper motor driver is off and coils are cut off
the current, zero – stepper motor driver is on and stepper motor coils
are supplied.
05 Driver functional capabilities
• Optoisolation of module control signals STEP/DIR/ENABLE.
• Expanded adjustment of working current of stepper motor phases
with divider.
• Stepper motor softstarter. After turning on the power or ENABLE
signal, current is increasing gradually in stepper motor coils. This
allows to exclude typical bump when turning stepper motor on.
• AUTO-SLEEP mode, driver after 1 sec standstill (lack of STEP signal)
automatically enters rotor hold mode (full/half operating current) for
heating reduction.
• Coil short-circuit module protection, wrong stepper motor connection
protection.
• Protection against back EMF effect.
• Polarity reversal power protection (the driver will not be switched on).
• Protection against overheating (temperature sensor).
• Inbuilt automatic compensator of normal speed stepper motor
resonance.
• Phase current adjustment for vibrations exclusion at low revs.
• Modifications scheme of phase current form with frequency increase
(morphing, transfer from microstep to step mode with with frequency
increase).
• Inbuilt dumper (back EMF compensation device from stepper motor).
• Convenient dismountable clip connectors to step motor, power source
and control signals.
• Alarm indication supplied by STEP/ENABLE frequency, inbuilt dumper
operation.
• Driver mounting on stepper motor case is available (PL86. Type).
• Possibility of cooling fan ( 50х50mm) mounting on driver’s radiator.
Cooling fan power performs via external power source. Cooling fan is
not included in the delivery set.
Control Signal Connections to the driver 06

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06. Control Signal Connections to the driver
Fig. 3. General scheme of CNC control
Stepper motor driver

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PLD86. New generation stepper motor driver
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06. Control Signal Connections to the driver
Fig. 4. Purelogic R&D stepper motor connection to the driver
PLD86 driver is optimal for control of bipolar and unipolar stepper
motors Purelogic R&D series PL86.
Stepper motor connection to the driver is performed as it is shown in
fig. 5 (clips PH1.1[+A], PH1.2[-A] and PH2.1[+B], PH2.2[-B]).
The driver has protection against wrong stepper motor coil connection
and coils linked together / ‘+’ power supply.
Purelogic R&D stepper motor’s connection to the driver is performed
according to fig. 4.
Please note in case of changing phases PH1.x<>PH2.x, the motor
will start rotating in the opposite direction (inversion analogue of DIR
signal).
The length of wires leading to the stepper motor from the driver must
not exceed 10 meters. Longer wires can lead to driver’s work failures
(because of strong electromagnetic interference created during stepper
motor coil switching).
It is strongly recommended to interlace the stepper motor wires per
phase, then put this braid to the screened metal sheath. Sheathes and
stepper motor frame must be grounded.
PH1.1 [+А] Red (RED)
PH1.2 [-А] Orange (ORG)
PH2.1 [+B] Blue (BLU)
PH2.2 [-B] Green (GRN)
Max supply voltage driver option depends on the applied stepper motor
and desired max rotation speed. Optimal supply voltage calculation
for the stepper motor is carried out according to the formula U=32*v
(stepper motor phase inductance mH), but not more than 80V.
Supply current must be chosen 50...70% from the claimed stepper
motor coil current.
Working current setting is performed by trimming resistor WORK
CURRENT and DIP-switch SW4.
When there is no STEP signal for more than 1 sec, the driver goes to
AUTO-SLEEP mode and reduces the coil current to the value identified
by DIP-switch SW3 (according to the scheme on the driver case, fig.5).
This allows to reduce heating when the stepper motor is in standstill
and to reduce current consumption. Hold current setting must be
performed only when driver voltage is off.
FULL is for full current, HALF is for half current (for SW3, SW4).
POWER OFF DEVICE BEFORE MAKING ANY CONNECTIONS.
Fig. 2. Differential input device
Stepper motor connection to the driver 08
07 Current and power option

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08. Protection functions, setup
Protection against polarity reversal power (the driver will not be
switched on).
Protection against wrong stepper motor coil connection and coils linked
together / ‘+’ power supply.
In some cases by interturn short-circuit of stepper motor coil, short-
circuit protection may not work because there is no exceeding of
permissible alarm current. This happens because under such coil
short circuit resistance does not equal 0 and the driver maintains the
specified current.
Protection against voltage jumps – protection function operates when
there is more than 90V, protection against back EMF effect.
Inbuilt dumper (back EMF compensation device from stepper motor).
Softstarter - As power voltage or ENABLE signal is turned on, current
in stepper motor coils increases gradually. This allows to exclude
typical bump when turning stepper motor on.
Phase current adjustment - vibrations exclusion at low revs.
Automatic compensator of midfrequency stepper motor resonance —
electronic scheme which allows to remove midfrequency resonance
effect. It is automatically switched ON/OFF when finding resonance.
The resonance appears in this range: 6-12 cycles per second.
Overheating protection – the driver has inbuilt temperature sensor
which changes radiator temperature. When radiator temperature
reaches ~60°С the driver turns off. It will be on as soon as the
temperature drops to ~50°С.
Change of DIP-switches SW1-SW4 must be performed only when the
power supply is OFF. Otherwise the driver will not react to changes.
When the power is switched on, green LED PWR (indication of power
supply), RED LED ERR flashes on.
When there is no alarm red ERR LED goes out in 1 sec. When there is
STEP frequency, intensity of STEP light changes.
When the protection function operates, the driver switches off stepper
motor coils, red signal ERR flashes on, yellow STEP LED goes out.
The driver restores its work after alarm cause removal and switching
off/on power supply.
Fig. 5. Stepper motor driver connection scheme
Protection functions, setup 09

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PLD86. New generation stepper motor driver
www.purelogic.ru8 (800) 555 63 74
09. Protection functions, setup
The warranty period is 12 months after purchasing and is valid only
if all operational conditions and scheduled maintenance are strictly
followed.
1. General terms
1.1. In case of product acquisition as separate components, Seller
guarantees working ability of every component, but does not
assume responsibility for the quality of their joint work (mismatch
of components). If you have questions please consult our technical
support team.
1.2. Seller does not guarantee compatibility of the purchased product
with the one that Buyer already has or bought from third parties.
1.3. Product’s component parts and configuration can be changed by
manufacturer without notice due to the product consistent technical
improvement.
2. Conditions for warranty acceptance
2.1. The product is accepted only in the same completeness of set as it
was purchased.
3. Warranty service procedure
3.1. Warranty service is performed by testing the claimed product
defect.
3.2. If the defect is proved, warranty repair is carried out.
4. We do not assume any responsibility for glass, electric lamps,
starters and expendable materials as well as:
4.1. Damaged product caused by inappropriate transport and store
conditions, wrong connection, operation in abnormal (off-design)
mode, or in conditions which are not manufacturer-supplied (including
temperature and humidity out of limits of recommended range), having
damages due to third-party circumstances (voltage jumps, natural
disasters, etc.), also having mechanical or thermal damages.
Terms of Warranty 11
Phase current adaptation (stepper motor smooth running) is carried
out by PHASE TRIM potentiometer when vibrations and uneven
stepping at low revs is found.
Adaption strategy is as follows:
1) A potentiometer is set to the extreme left position (minimum value).
2) Stepper motor is connected, voltage is supplied, vibration frequency
is set up by STEP frequency generator.
3) When smoothly rotating PHASE TRIM potentiometer clockwise, the
vibration reduces.
You may fail to reduce vibrations totally because of stepper motor
specifics.
When removed from one frequency, vibrations can appear in another
frequency. Therefore it is necessary to choose the most suitable way of
setting.
The driver allows to divide electronically physical stepper motor step -
4, 8, 16 and 32.
Thus positioning accuracy is higher. Step division mode is called
microstep division. This mode allows to reduce stepper motor
resonances at low revs.
It is recommended to use PLD57 driver in step division 1:8, 1:16 or
1:32. In these modes stepper motor rotates as smooth as possible, low-
frequency vibrations are minimal, automatic compensator of stepper
motor mid frequency resonance works best.
Switching of step division mode is performed with help of jumpers JP1,
JP2 which are located inside the device (you should remove the cover)
Step division choice must be performed only when driver supply is OFF.
(fig. 5).
10 Step division option

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PLD86. New generation stepper motor driver
www.purelogic.ru8 (800) 555 63 74
11. Terms of Warranty
Produced and accepted in accordance with obligatory requirements of
valid technical documentation and is qualified for exploitation.
Lot number:
Technical
Control
Department
4.2. The product with traces of foreign objects or substances impact,
including dust, liquids, insects, also objects having extraneous
inscription.
4.3. The product with traces of unauthorized tampering and (or) repair
process (traces of opening, home-made soldering, elements changing
etc).
4.4. The product with self-diagnostic function that shows improper
exploitation. 4.5. Technically complex product in respect of which
assembly and integration and start-up works were not performed by
Seller specialists or by recommended organizations, except in cases
directly regulated under goods documentation.
4.6. In cases when the product exploitation was performed in
conditions when power supply did not correspond with manufacturer’s
requirements, also when there is no electrical protection device.
4.7. The product which was resold by the initial buyer to the third party.
4.8. The product with defects which were caused by low-quality spare
parts or fulfilled their service life spare parts,consumable materials,
also using spare parts, consumable materials not corresponding with
manufacturer’s requirements.

We draw your attention to the fact that there can be
some changes in this instruction due to the product
consistent technical improvement. You can always
download our latest versions at www.purelogic.ru
www.purelogic.ru
Contacts
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Voronezh [phone]
149 Office
160, Leninsky avenue, Voronezh,
Russia, 394033
Monday - Thursday: 8.00–17:00
Friday: 8.00–16.00
Break: 12.30–13.30
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