Purelogic PLDS880 Operational Manual

01. General Provisions

02. Scope of delivery

03. Specifications

04. Driver installation and ventilation

05. Driver features

06. Driver control signal connection

07. Current and voltage selection

08. Driver SSM connection

09. DIP-switch driver tuning

10. PC driver connection via USB interface

11. Driver parameter adjustment by configuration program

12. Driver error and indication

13. Warranty

OPERATIONAL MANUAL

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PLDS880

Servo-step motor DSP driver

www.purelogic.ru8 (800) 555 63 74

01

General Provisions

PLDS880 is a DSP processor based digital driver of Servo-Step
Motor (SSM) with possibility of driver parameter PC adjustment via
USB interface. Driver may work both in servo mode and SM common
driver mode without encoder. In servo mode SSM is controlled as fully
functional servo motor with position and speed control. This allows
obtaining motor maximum moment output and excluding step skip at
overload. Driver is highly efficient, SSM rotation noise and vibration is
significantly reduced.

Device features integral SSM winding SC, encoder power supply SC,
SSM back EMF effect protection circuits; SSM mid-frequency resonance
compensator; power supply voltage polarity reversal protection and
SSM soft start; damper; STEP frequency generator and STEP inlet
frequency excess protection. Driver operates with STEP/DIR/ENABLE
standard protocol. All driver control inlets are optically isolated and
compatible with 2.5V, 3.3V, 5V logic levels. Also module has AUTO­SLEEP mode that is started at STEP signal unavailability.

Driver is optimal choice for Purelogic R&D PL57/PL86 Series 2
phase bipolar servo-step motors. Operation with other 2 phase SSM for
instance Leadshine is also possible.

01. General Provisions

!

For more information on using and configuring our products
please visit our site www.purelogic.ru

Edition of 09.11.2016

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PLDS880. Servo-step motor DSP driver

Specifications

Scope of Delivery

• PLDS880 step motor DSP driver - 1 piece

• Operational Manual - 1 piece

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SSM step division (micro step)

Integral generator SSM speed

ERROR output parameters

Module net weight

STEP signal max. frequency

Module power supply voltage

SSM operating current

SSM max. speed

SB encoder support

Insulation resistance

Operating temperature

Diff.inlet, 500-1024 pulse/rev

500 MOhm

0...50 °С

1...512

0…500 rev/min

50V/50mA MAX

0.45 kg

200 kHz

18…80V (typical value 70V)

2А…10А

3000 rev/min

• All driver connections and operation mode changes shall be made
only with disabled power supply source

• Do not install power supply disconnector (circuit breaker) after
power supply source (at driver power supply line). Disconnector may be
installed only at ~220V side power supply unit inlet.

• Do not connect driver power supply in series. Only “star” type
connection is allowed (each driver separate power supply line is
connected to PSU).

www.purelogic.ru8 (800) 555 63 74

03. Specifications

Figure 1. PLDS880 SSM driver dimensions

Edition of 09.11.2016

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PLDS880. Servo-step motor DSP driver

To ensure optimal thermal conditions equipment inside NC control rack
shall be mounted according to diagram below:

Драйвер –Driver
Вентиляторы - Fans
Направление воздушного потока - Air stream direction

Ambient conditions

1) Operating temperature: 0-450C.

2) Ambient operating humidity: below 40-80% (w/o condensation).

3) Storage temperature: -40 ~ 550C.

4) Storage ambient humidity: below 80% (w/o condensation)

5) vibration below 0.5G.

6) avoid moisture entry

7) avoid direct sunlight

Driver Installation and Ventilation

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>100mm >100mm

>100mm

>25mm

— Направление воздушного потока

Драйвер Драйвер

>100mm

— Вентиляторы

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04. Driver Features

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Driver Features

• Driver PC adjustment via USB interface. USB interface is galvanic
isolated from driver.

• Driver may work in both servo mode and SM conventional driver mode
without encoder

• Any SSM step division within 1…512.

• Pulse number per (PPR, CPR) encoder revolution is 500…1024.

• PI-regulator in SSM phase control current loop.

• STEP/DIR/EANBLE/ERROR module control signal optic isolation.

• Integral STEP signal test generator (0…500 rev/min).

• SSM soft start. After energizing or ENABLE signal SSM winding
current is increased gradually. This excludes typical “impact” at SSM
start.

• AUTO-SLEEP mode, driver after 1 sec. of downtime (STEP signal
unavailability) automatically switches to SSM rotor complete/partial
current hold mode to reduce SSM heating.

• SSM winding SC, SSM misconnection module protection

• Encoder power supply circuit SC module protection

• Power supply voltage polarity reversal protection (Driver start is
failed)

• SSM reverse EMF effect protection

• Heating protection (temperature sensor)

• Integral SSM mid-frequency resonance compensator.

• Integral damper

• ERROR driver trouble signal opto-isolated output

• SSM connection easy-to-use dismountable terminals/

• STEP frequency, emergency, driver power supply indication.

8) avoid oil mist and salt entry

9) avoid corrosive liquefied gas entry

Edition of 09.11.2016

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PLDS880. Servo-step motor DSP driver

Module is controlled by standard STEP/DIR and ENABLE signals.
Signals are transmitted at differential opto-isolated inlets.

Yellow LED is illuminated and driver is ON at generated ENABLE
signal. Yellow LED is flashing and SSM is rotating at produced STEP
frequency.

Configuration of control differential inlets and connection to control
system (controller) with “open collector” type outlets are shown at
Figure 2. Module control signals are connected in accordance with (Fig.

5).

STEP signal parameters: Operating voltage 2.5V, 3.3V. 5V (connection
of additional current limiting resistor may be required).

Control Signal Connection

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Figure 2. Configuration of differential inlets

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07. Curret and voltage selection

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Current and voltage selection

Driver power supply max. voltage selection depend upon used SSM
and its required speed. This SSM optimal power supply voltage is
calculated by formula U= √ 32* (SSM phase inductance in mH) but
max. 80V. PL57 type SSM recommended voltage is 45V. PL86 type SSM
recommended voltage is 70V.
Power supply current shall be selected considering 50…70%
of SSM winding specified operating current. SSM operating current is
set by corresponding value in configuration program (Work_Current_
Min and Work_Current_Max). If no STEP signal is available more than
1 second driver is switched to sleep mode (AUTO-SLEEP mode) and
reduces winding current.

max. 20 mA current consumption, signal 2 ms min. time. SSM step is
performed at signal rising edge.

DIR signal parameters: Operating voltage 2.5V, 3.3V. 5V (connection
of additional current limiting resistor may be required), max. 20 mA
current consumption, 200 ns actuation time before/after STEP rising
edge.

ENABLE signal parameters: Operating voltage 2.5V, 3.3V. 5V
(connection of additional current limiting resistor may be required),
max. 20 mA current consumption, 100 ms actuation time. Logical unit
(inlet is energized) is SSM driver is ON and SSM windings are de­energized, zero (nothing is generated or 0V at inlet) is SSM driver is ON
and SSM windings are energized.