Purelogic PLD880 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
2
2
3
5
6
7
10
11
13
14
15
PLD880
Stepper motor driver

Edition from 23.11.2017 3
PLD880. Stepper motor driver
www.purelogic.ru8 (800) 555 63 74
01
02
General information
Delivery set
Technical features
PLD880 is an available microstepping stepper motor driver.
The driver has inbuilt coil short-circuit protection, back EMF effect
protection, inbuilt automatic compensator of normal speed stepper
motor resonance, phase current change scheme with frequency
increase, polarity reversal power protection, soft starter scheme; STEP
inbuilt frequency generator.
The device works with standard control protocol STEP/DIR/ENABLE.
The module has discrete regulation of operating current of stepper
motor phases. All driver’s control inputs are optoisolated and logic
levels 2.5V, 3.3V, 5V compatible.
The driver 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). Work with other stepper motors is also
possible.
• Stepper motor driver PLD880 — 1 pcs.
• Instruction manual — 1 pcs.
03
01. General information
Stepdivision (microstep)
Unit weight without packaging
STEP Max signal frequency
Module power supply
Isolation resistance
Operating current of stepper motor driver
Operating temperature
STEP inbuilt generator frequency
Max shaft rotation frequency
600…3`000 Hz
42 cycles per second or 2530 cycles
per minute (PL86H113, 75V, step division
1:32, 270 kHz)
1:2, 1:4, 1:8, 1:16, 1:32
0,6 kg
270 kHz
18...80V (bogey value 75V)
500 MOhm
2,3...8A fig. 2 (discrete adjustment)
0...60 °С
!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

Edition from 23.11.2017 5
PLD880. Stepper motor driver
www.purelogic.ru8 (800) 555 63 74
03. Technical features
Fig. 1. Stermotor driver PLD880 dimensions
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

Edition from 23.11.2017 7
PLD880. Stepper motor driver
www.purelogic.ru8 (800) 555 63 74
05. Driver functional capabilities
The driver operates with standard signals STEP/DIR/ENABLE.
The signals are transmitted to differential optoisolated inputs.
The scheme of differential input device and connection method to the
controller with outputs ‘open collector’ type is shown in fig.2.
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 front edge.
DIR signal characteristics — working voltage 2.5V, 3.3V, 5V (you may
need extra current-limiting resistor connection), current consumption
up to 20мА, 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.
Fig. 2. Differential input device
Control Signal Connections 06
05 Driver functional capabilities
• Optoisolation of module control signals STEP/DIR/ENABLE.
• Expanded discrete adjustment of working current in stepper motor
coils.
• 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.
• Over-voltage protection (back EMF effect protection).
• Polarity reversal supply voltage protection (the driver will not be
switched ON).
• Inbuilt automatic compensator of midfrequency 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).
• Inbuilt STEP generator frequency (test driver start can be performed
without PC or external generator connection).
• Optoisolated output of driver alarm signal.
• Convenient dismountable clip connectors to step motor, power source
and control signals.
• Alarm indication supplied by STEP/ENABLE frequency, inbuilt dumper
operation.
• STEP/DIR/ENABLE/ALARM signals are duplicated in DB-9M type
connector for convenient connection to PLC4x-G2.

Edition from 23.11.2017 9
PLD880. Stepper motor driver
www.purelogic.ru8 (800) 555 63 74
06. Current and power option
Fig. 3. General scheme of CNC control
Stepper motor driver

Edition from 23.11.2017 11
PLD880. Stepper motor driver
www.purelogic.ru8 (800) 555 63 74
07. Current and power option
Fig. 4. Purelogic R&D stepper motor connection to the driver
PLD880 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.2 (clips PH1.1[+A], PH1.2[-A] и 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 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.
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)
Stepper motor connection to the driver 08
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 DIP-switches (current value is
set up by SW1, SW2, SW3 and multiplier factor SW4).
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) PHASE TRIM potentiometer moves to ¼ while rotating PH2(A) TRIM ,
the vibration reduces.
If there are still vibrations, PH1(A) TRIM potentiometer moves to ¼
again, rotating PH2(A) TRIM, the vibration reduces, etc. You may fail to
reduce vibrations totally because of stepper motor specifics.
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 SW5.
POWER OFF DEVICE BEFORE MAKING ANY SWITCH-OVERS.
07 Current and power option

Edition from 23.11.2017 13
PLD880. Stepper motor driver
www.purelogic.ru8 (800) 555 63 74
08. Protection functions, settings
POWER OFF DEVICE BEFORE MAKING ANY SWITCH-OVERS.
Polarity reversal power protection - 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.
Phase current adjustment - vibrations exclusion at low revs.
Automatic compensator of midfrequency stepper motor resonance —
electronic scheme which allows to remove midfrequency resonance
effect which appears in this range: 6-12 cycles per second.
When the power is supplied, green LED POWER, green LED STEP/ENB
and red LED ERROR flash on.
When there is no alarm red ERR LED goes out in 1 sec and the
green ones are still switched on (if ENABLE=1, green LED goes out;
ENABLE=0, green LED is on or blinks when there is STEP frequency).
When the protection function operates, the driver switches off stepper
motor coils, red signal ERR flashes on, green STEP/ENB LED goes out
and opto-coupler of error closes/opens.
Collector (С) and emitter (Е) of opto-coupler error are terminated to
DB-9M type connector according to fig.1. Switch SW9 (Function) inverts
opening/closing of opto-coupler error.
The driver restores its work after alarm cause removal and switching
off/on power supply.
Protection functions, setup 09
Fig. 5. Stepper motor driver connection scheme

Edition from 23.11.2017 15
PLD880. 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
When the protection function operates, the driver switches off stepper
motor coils, red signal ERROR flashes on, GREEN LED STEP/ENB goes
out and error optocoupler is circuited/opened.
Collector (С) and emitter (Е) of error optocoupler is displayed to
connector DB-9M type according to fig.1. SW9 switch-over(Function)
inverts circuit/opening of error optocoupler.
The driver restores its work after alarm cause removal and switching
off/on powel supply.
When there is STEP signal, STEP/ENB blinks. When ENABLE signal is
supplied, STEP/ENB goes out, when no ENABLE signal - STEP/ENB
flashes.
The driver has inbuilt STEP frequency generator – a convenient
function for a test driver start-up without access to PC or any other
external generator of STEP frequency. Generator frequency is regulated
by FREQ potentiometer.
When turned on SW10, the driver can be operated by DIR/ENABLE
signals and change stepper motor step division.
The driver allows to divide electronically physical stepper motor step -
2, 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 PLD880 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 and an automatic compensator of
midfrequency stepper motor resonance works its best.
Switching of step division mode is performed via DIP-switches SW6,
SW7, SW8. Step division choice must be performed only when driver
supply is OFF.
10 Step division option

Edition from 23.11.2017 17
PLD880. 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
Moscow [phone]
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
[e-mail]