Purelogic PLD442 User manual

01. General information
02. Delivery set
03. Technical features
04. Driver functional capabilities
05. Connectors, switch-overs and indication assignment
06. Controlling signals connection to stepper motor driver
07. Stepper motor connection
08. Current and supply option
09. Step division option
10. Protection functions, setup
11. Terms of Warranty
INSTRUCTION MANUAL
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PLD442
Microstepping stepper motor driver

Edition from 23.11.2017 3
PLD442. Microstepping stepper motor driver
www.purelogic.ru8 (800) 555 63 74
01
02
General information
Delivery set
Driver functional capabilities
Technical features
PLD442 is an available microstepping stepper motor driver.
The device has inbuilt coil short-circuit protection, protection against
overvoltage and overheating. 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 driver is AUTO-SLEEP mode supplied which is turned on when
there is no STEP signal.
The device is perfect for control of bipolar and unipolar Purelogic
R&D stepper motors (PL42/PL57 series) as well as other stepper
motors.
• Optoisolation of module control signals STEP/DIR/ENABLE.
• During STEP/DIR mode (MACH3, Linux, CNC via LPT or controller
PLCM USB/Ethernet).
• 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, over-voltage protection.
• Convenient dismountable clip connectors to step motor, power
source and control signals.
• Stepper motor driver PLD442 — 1 pcs. 04
03
01. General information
Operating current of stepper motor driver
Unit weight without packaging
STEP Max signal frequency
Controlling method
Insulation resistance
Module power supply
Module power supply
Stepdivision (microstep)
Dimensions (WxHxD)
Max shaft rotation frequency
1:2, 1:4, 1:8, 1:16
83 х 26 х 53,5 mm
100 cycles per second or 6000 cycles per
minute (PL57H76, 38V, step division 1:8,
160 kHz)
1A...3,5A
0,05 kg
200 kHz
STEP/DIR/ENABLE
500 MOhm
18...38V (bogey value 35V)
0...50 °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. Radiator mounting (it is not included in the set) with a
minimum size of 100 cm2is required.

Edition from 23.11.2017 5
PLD442. Microstepping stepper motor driver
www.purelogic.ru8 (800) 555 63 74
04. Driver functional capabilities
Fig. 1. Stermotor driver PLD442 dimensions
05 Connectors, switch-overs and indication assignment
XP1 – clip connector of driver power supply
XP2, XP3, XP4 – clip connectors of input signals connection
XP5 – connector (RJ45 type of input signals connection)
XP6, XP7 – clip connectors of stepper motor connection
XP8 - mode switching contacts
LED1 – POWER signal indication.
LED2 – ERROR signal indication.
LED3 – ENABLE signal indication.
LED4 – STEP signal indication.
LED5 – DIR signal indication.
Controlling signals connection to stepper motor driver
Controlling signals connection
PLD442 driver controls a stepper motor using standard signals
STEP/DIR/ENABLE.
STEP/DIR/ENABLE signals are allocated to connectors XP2, XP3,
XP4 and RJ45 — XP5-type and are galvanically separated from the
controller.
As STEP signal frequency is increased, LED4 intensity also changes.
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 are working voltage 3 ... 5V, current
consumption is 20mА, min signal duration is 10 ms. Stepper motor step
is performed on signal’s back edge.
DIR signal’s characteristics – working voltage 3 ... 5V, current
consumption is 20mА, action time is 200 ns before/after STEP’s front
edge.
06
Fig. 2. Differential inputs device

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PLD442. Microstepping stepper motor driver
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06. Controlling signals connection to stepper motor driver
Fig. 3. Purelogic R&D stepper motor connection to the driver
07 Stepper motor connection
PLD442 driver is optimal for bipolar and unipolar stepper motors
Purelogic R&D series PL42/PL57. Stepper motor connection to the
driver is performed to XP6 and XP7 connectors as it is shown in fig.5
(clips PH1.1[+A], PH1.2[-A] и PH2.1[+B], PH2.2[-B]).
The driver has protection against coils linked together.
Purelogic R&D stepper motor connection to the driver is performed
according to fig. 3.
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.
ENABLE signal’s characteristics – working voltage 3 ... 5V, current
consumption is 20mА, action time is 100 ms.
When logic «1», module is switched on, «0», module is switched off.
STEP/DIR/ENABLE are signaled by: STEP – LED4; DIR – LED5;
ENABLE – LED3.
Power source connection
Power source connection is performed according to fig.5.
Voltage supply is indicated by POWER (LED1).
PH1.1 [+А] Red (RED)
PH1.2 [-А] Orange (ORG)
PH2.1 [+B] Blue (BLU)
PH2.2 [-B] Green (GRN)
Current and supply option
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 38V.
Supply current must be chosen 50...70% from the claimed stepper
motor coil current.
Working current setting is carried out with trimming resistor R1 (fig.
5).
When there is no STEP signal more than 1 sec, the driver goes to
Sleep mode.
Power off device before making any connections.
08

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PLD442. Microstepping stepper motor driver
www.purelogic.ru8 (800) 555 63 74
08. Current and supply option
Fig. 4. General scheme of CNC control

Edition from 23.11.2017 11
PLD442. Microstepping stepper motor driver
www.purelogic.ru8 (800) 555 63 74
08. Current and supply option
Fig. 6. Step division choice scheme
Fig. 5. Stepper motor driver connection scheme
- Jumper is set - Jumper is removed
M1 M2 M3 Division step
Standby mode
1/1
1/2
1/4
1/8
1/16
Standby mode
Step division option
The driver allows to divide electronically physical stepper motor step
– 2, 4, 8, 16. 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 PLD442 driver in
step division 1:8 and higher. In these modes stepper motor rotates as
smooth as possible, low-frequency vibrations are minimal.
Switching step division mode is carried out by jumper mounting to
М1, М2 and М3 contacts of XP8 connector (fig. 6).
Power off device before making any connections.
09

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PLD442. Microstepping stepper motor driver
www.purelogic.ru8 (800) 555 63 74
10. Protection functions, setup
10 Protection functions, setup
When the protection function operates, the driver switches off
stepper motor coils, red signal ERROR (LED2) flashes on. The driver
restores its work after alarm cause removal and switching off/on 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.
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.
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.
11 Terms of Warranty
10 Protection functions, setup
Produced and accepted in accordance with obligatory requirements of
valid technical documentation and is qualified for exploitation.
Lot number:
Technical
Control
Department

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
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