Baldor LD2-02S Installation And Operating Manual

DC SERVO DRIVE

Servo Systems Co. • 115 Main Road • P.O. Box 97 • Montville, NJ, 07045-0097

[phone] • Toll Free: [phone] • Fax: [phone]

www.servosystems.com

DC Servo Control

SERIES LD

Installation & Operating Manual

7/98 MN1269

Table of Contents

Servo Systems Co. • 115 Main Road • P.O. Box 97 • Montville, NJ, 07045-0097

[phone] • Toll Free: [phone] • Fax: [phone]

www.servosystems.com

Section 1

General Information 1-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Year 2000 Compliance 1-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Limited Warranty 1-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Safety Notice 1-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Introduction 1-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Features 1-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Model Information 1-6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Functional Description 1-7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Specifications 1-8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

General Description 1-10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Servo Control Card 1-10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Chassis Assembly 1-10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Logic Power Supply 1-10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Bus Power Supply 1-10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Overvoltage Protector 1-10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Adjustments, Testpoints, and Indicators 1-10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Adjustments 1-1 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

T ools 1-14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Section 2

Installation 2-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Receiving & Inspection 2-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Location Considerations 2-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Installing the Servo Control Card 2-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Mount the Chassis 2-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

General Wiring Considerations 2-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Power Wiring 2-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Grounding 2-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Signal Wiring 2-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Electrical Noise Suppression 2-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Wiring Instructions 2-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Power Wiring 2-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Signal Wiring 2-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Input Wiring Connections 2-6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Optional Input Signal Wiring 2-6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Section 3

Start–up 3-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Overview 3-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Initial Potentiometer Settings 3-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Start-up (Power On) 3-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Adjustment Procedure 3-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Table of Contents iMN1269

Section 4

Servo Systems Co. • 115 Main Road • P.O. Box 97 • Montville, NJ, 07045-0097

[phone] • Toll Free: [phone] • Fax: [phone]

www.servosystems.com

Troubleshooting and Maintenance 4-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Overview 4-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Initial Checks 4-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Resetting the Servo Control 4-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Maintenance 4-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Servo Control Card Replacement 4-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Section 5

Special Functions 5-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Current (Torque) Mode 5-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Emergency Stop 5-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Appendix A A-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Condensed Installation Instructions A-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Appendix B B-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Jumper and Personality Module Settings B-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Personality Module Current Settings B-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Peak and Continuous Current Levels B-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Record of “Set Up” Configuration B-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

ii Table of Contents MN1269

Section 1

Servo Systems Co. • 115 Main Road • P.O. Box 97 • Montville, NJ, 07045-0097

[phone] • Toll Free: [phone] • Fax: [phone]

www.servosystems.com

General Information

Year 2000 Compliance The motor control products listed below are manufactured or offered for sale by Baldor

Electric and are certified to be year 2000 compliant.

DC Motor Controls: Series BC100/200, BC19H, BC20H, LD, TSD, UM, UMH.
AC Motor Controls: Series ID10, ID1100, ID15H, ID15J, ID15V, ZD17H, ZD18H, ID21H,

ZD22H, SD23H, ZD24M, ZD25M, SD26M, BSC, DBSC, BTS, SBTS.
Position Controllers: PMC, SmartMove, NextMove.
Furthermore, year 2000 compliance means that the product will:

Not use dates or perform any date processing.
Date information is irrelevant to proper operation; and
There are no problems or issues to address to ensure continued and proper

operation of the product listed due to changes in century dates.

Limited Warranty

For a period of two (2) years from the date of original purchase, BALDOR will
repair or replace without charge controls and accessories which our
examination proves to be defective in material or workmanship. This
warranty is valid if the unit has not been tampered with by unauthorized
persons, misused, abused, or improperly installed and has been used in
accordance with the instructions and/or ratings supplied. This warranty is in
lieu of any other warranty or guarantee expressed or implied. BALDOR
shall not be held responsible for any expense (including installation and
removal), inconvenience, or consequential damage, including injury to any
person or property caused by items of our manufacture or sale. (Some
states do not allow exclusion or limitation of incidental or consequential
damages, so the above exclusion may not apply .) In any event, BALDOR’s
total liability, under all circumstances, shall not exceed the full purchase
price of the control. Claims for purchase price refunds, repairs, or
replacements must be referred to BALDOR with all pertinent data as to the
defect, the date purchased, the task performed by the control, and the
problem encountered. No liability is assumed for expendable items such as
fuses.

Goods may be returned only with written notification including a BALDOR
Return Authorization Number and any return shipments must be prepaid.

General Information 1-1MN1269

Safety Notice: This equipment contains high voltages. Electrical shock can cause serious or fatal injury.

Servo Systems Co. • 115 Main Road • P.O. Box 97 • Montville, NJ, 07045-0097

[phone] • Toll Free: [phone] • Fax: [phone]

www.servosystems.com

Only qualified personnel should attempt the start–up procedure or troubleshoot this
equipment.

This equipment may be connected to other machines that have rotating parts or parts
that are driven by this equipment. Improper use can cause serious or fatal injury. Only
qualified personnel should attempt the start–up procedure or troubleshoot this equipment.

PRECAUTIONS:

WARNING: Do not touch any circuit board, power device or electrical

connection before you first ensure that power has been
disconnected and there is no high voltage present from this
equipment or other equipment to which it is connected. Electrical
shock can cause serious or fatal injury. Only qualified personnel
should attempt the start–up procedure or troubleshoot this
equipment.

WARNING: Be sure that you are completely familiar with the safe operation of

this equipment. This equipment may be connected to other
machines that have rotating parts or parts that are controlled by
this equipment. Improper use can cause serious or fatal injury.
Only qualified personnel should attempt the start–up procedure or
troubleshoot this equipment.

WARNING: Be sure all wiring complies with the National Electrical Code and all

regional and local codes. Improper wiring may result in unsafe
conditions.

WARNING: Be sure the system is properly grounded before applying power.

Do not apply AC power before you ensure that grounds are
connected. Electrical shock can cause serious or fatal injury.

WARNING: Before servicing this control, allow at least five (5) minutes after AC

power is disconnected to allow capacitors to discharge. Electrical
shock can cause serious or fatal injury.

WARNING: Improper operation of control may cause violent motion of the

motor shaft and driven equipment. Be certain that unexpected
motor shaft movement will not cause injury to personnel or damage
to equipment. Peak torque of several times the rated motor torque
can occur during control failure.

WARNING: Motor circuit may have high voltage present whenever AC power is

applied, even when motor is not rotating. Electrical shock can
cause serious or fatal injury.

WARNING: A DB Resistor may generate enough heat to ignite combustible

materials. To avoid fire hazard, keep all combustible materials and
flammable vapors away from brake resistors.

Continued on next page.

1-2 General Information MN1269

Section 1

Servo Systems Co. • 115 Main Road • P.O. Box 97 • Montville, NJ, 07045-0097

[phone] • Toll Free: [phone] • Fax: [phone]

www.servosystems.com

General Information

Caution: To prevent equipment damage, be certain that the electrical service

is not capable of delivering more than the maximum line short
circuit current amperes listed for the control rating.

Caution: To prevent equipment damage, be certain that the input power has

correctly sized protective devices installed as well as a power
disconnect.

Caution: Avoid locating control immediately above or beside heat generating

equipment, or directly below water or steam pipes.

Caution: Avoid locating control in the vicinity of corrosive substances or

vapors, metal particles and dust.

Caution: The X and Y Axis motors may tend to run away, out of control, if the

tach wires are reversed. If the axis moves in the wrong direction,
the motor wires are reversed. If, however, reversing the leads
doesn’t stop a runaway motor, make sure the T (Tachometer)
potentiometer is not full counterclockwise.

General Information 1-3MN1269

Introduction The Baldor “LD” Series Servo Control (see Figure 1-1) is a multi axis pulse width

Servo Systems Co. • 115 Main Road • P.O. Box 97 • Montville, NJ, 07045-0097

[phone] • Toll Free: [phone] • Fax: [phone]

www.servosystems.com

modulated (PWM), high performance servo control designed to be used with DC brush
type permanent magnet servomotors. This transistorized servo control is a key
component in motion control applications, providing not only converted DC power to the
motor, but also precisely controlling current and velocity at the motor. Its compact design
requires very little enclosure space, while its modular configuration makes servicing easy.

The “LD” Series can be used with many types of position controllers due to its
standardized ±VDC signal input.

Figure 1-1 “LD” Series Servo Control (2 Axis Package)

1-4 General Information MN1269

Features The Baldor “LD” Series switching concept enables the user to operate with the highest

Servo Systems Co. • 115 Main Road • P.O. Box 97 • Montville, NJ, 07045-0097

[phone] • Toll Free: [phone] • Fax: [phone]

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possible bandwidth with reduced switching losses, ripple current, EMI and RFI. Servo
Control cards are field replaceable.

Note: “LD” and “UM” series cards are NOT interchangeable.

The “LD” chassis and Servo Control card combination provides protection features and
status indicators including:

Voltage Error (VE)
Excess Current (EC)
Thermal Protection (EC)
Ground Fault (GF)
Surge Current (SC) and Short Circuit Protection
Logic Voltage Status (MV, PV) or (–15V, +15V)
Bus Voltage Status (PB) or (BUS)
AC Input Voltage Status (AC)

Other standard features include:

20 kHz “Inaudible” Switching
Test Points – to aid during set up
Jumper Settings – allow easy tailoring for specific applications
“Personality Module” – for custom current settings
Decoupled current sense – for monitoring current (absolute or actual value)
EC Latch or Foldback – selectable response to overcurrent condition
Left Limit – Overtravel Limit
Right Limit – Overtravel Limit
Interlock – used to shut down output to motor
External reset line
Push button reset
Phoenix style detachable screw terminals

Each Servo Control can be configured for:

Velocity mode operation with tachometer
Current mode operation
Differential or single ended signal inputs

General Information 1-5MN1269

Model Information Model descriptors that describe key parameters of each unit specify the “LD” Series

Servo Systems Co. • 115 Main Road • P.O. Box 97 • Montville, NJ, 07045-0097

[phone] • Toll Free: [phone] • Fax: [phone]

www.servosystems.com

Servo Control and Chassis. The “LD” Series Servo Control cards can be configured with
chassis to support up to four (4) axes at 160 VDC.

Figure 1-2 Identification

1-6 General Information MN1269

Functional Description The “LD” Servo Control consists of (1) a power supply, (2) a velocity control amplifier and

Servo Systems Co. • 115 Main Road • P.O. Box 97 • Montville, NJ, 07045-0097

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(3) fault logic circuitry. The functional concepts are detailed below.

Power Supply The power supply of a PWM bridge normally acts as a low output impedance voltage

source. However, if an analog signal representing motor current is applied to the front
end of the amplifier together with a current command, the impedance of the PWM bridge
then becomes high. These high impedance bridges exhibit a unique characteristic
referred to as current sourcing. That is, motor current and therefore motor torque
becomes proportional to commanded input current.

Current Sense Coupler The current sense coupler within the power amplifier serves as the current loop feedback

mechanism. The unit isolates the high voltage motor signal from the low level control
circuitry.

Switching Configuration

The power amplifier contains a transistor bridge consisting of 2 limbs each containing 2
main switches. These switches enable a limb output to be connected alternately from the
minus bus to the plus bus. Both limb output signals or motor lines are normally zero with
respect to the minus bus. However, if current is commanded as described above, the
average voltage on only one of the limbs will increase while the other limb remains
connected to the minus bus. This switching configuration is referred to as the lower
circulation method.

Velocity Control Amplifier (VCA)

The high gain front–end velocity control amplifier accepts a speed command (Signal) and
a tachometer voltage (Tach) through the input connector. The VCA clamped error signal
(C adjustment) is applied to the power amplifier as a current command.

Excess Current Limit The long–term current clamp senses motor current and responds to overload conditions

beyond rated output. If the comparator is tripped, it disables the drive, lights the Excess
Current (EC) indicator and pulls the interlock line “low” (if P4 is in latch position).

Surge Current Sensor The surge current sensor pulls the interlock line low internally if the peak output current is

exceeded. Once stopped, the drive must be cleared by connecting the reset line to
common momentarily (reset switch) or by interrupting logic power for 2 seconds.

Overheat Sensor A thermal switch with significant hysteresis attached to the heatsink sets the EC (Excess

Current) latch if the heatsink temperature exceeds a preset level. The latch operates the
EC fault indicator. The fault condition is cleared after the heatsink temperature returns to
normal and a reset is given.

Left Limit, Right Limit Limit switches are typically mounted on machinery to restrict the load from moving into

catastrophic over–travel conditions. Limit switch polarity of the voltage on this line is the
same as that on the signal pin of the input connector. The motor is wired such that
movement produces a positive voltage on NIML (Non–Inverting Motor Line) with respect
to IML (Inverting Motor Line). Therefore, a positive input signal will cause the axis to
move in a rightward direction. The limit switch leads are then wired confidently to the
appropriate pins of the input connector.

Decoupled Current Sense

The Decoupled Current Sense (DCS) pin is isolated from the high voltage motor lines.
Therefore, motor current is evaluated safely by connecting an oscilloscope or voltmeter to
the DCS pin of the input connector and common (TP1).

Tachometer Filter The tachometer filter rejects tachometer commutator noise by reducing the tach path

bandwidth so that the high gain velocity control amplifier can be responsive yet reject
tach noise.

General Information 1-7MN1269

Specifications

Servo Systems Co. • 115 Main Road • P.O. Box 97 • Montville, NJ, 07045-0097

[phone] • Toll Free: [phone] • Fax: [phone]

www.servosystems.com

Standard Chassis & Power Supply Assemblies

Output:

LD2- LD4-

Rated Bus Voltage (VDC) 160 160
Rated Continuous Current (A) 27 50
Positive Logic 15VDC (A) 1.0 1.0
Negative Logic 15VDC (A) 1.0 1.0

Input:

LD2- LD4-

Nominal Bus Input (VAC 50/60Hz) 115 115
Bus Input Range (VAC 50/60Hz) 105-125 105-125
Number of Phases 1 3
Nominal input for Fan & Logic Supply (VAC 50/60Hz) Prewired 115 (1 phase)

Overvoltage Protection:

LD2- LD4-

Continuous Rating (W) 250 500
Peak Rating (W) 4000 8000
Clamp Rating (V) 195 195
Shutdown Point Typical (V) 220 220

General:

LD2- LD4-

Operating Temperature (°C) 0-50 0-50
Weight (lbs.) 14 20.6
Footprint (inches)

Length 9 13
Width 10.5 10.5
Height 7.25 7.25

Notes:

1. An isolation transformer is not required for “LD” controls (115VAC, 1phase).

2. For LD-4, the power requirements cannot be met by 115VAC 1phase input power. It is recommended that a
230VAC input power be used with an isolation transformer to provide 115VAC 3 phase input power for an LD-4.

3. Line power limitations with 1 phase prevents the chassis and drives from delivering full continuous rated output
power.

1-8 General Information MN1269

Servo Control Card

Servo Systems Co. • 115 Main Road • P.O. Box 97 • Montville, NJ, 07045-0097

[phone] • Toll Free: [phone] • Fax: [phone]

www.servosystems.com

Output:

LD3015HS

Rated Bus Voltage (VDC nominal) 160
Rated Continuous Current (A) 15
Current Limit Adjust (A) 5-15
Peak Current Adjust (A) (maximum time 1.5 seconds) 30
Peak Current Adjust (A) 0-30
Switching Frequency (kHz) 20
Form Factor 1.01
Minimum Inductance (mH) 2.0
Frequency Response (kHz) 2.5

:

Input

LD3015HS

Signal Input 〈±VDC) See note 2. 5 to 15
Drift (mV/°C)
Overall Gain (A/V min) 0-6000

Auxiliary input:s

See note 3.
Impedance (k ohms) 20

10

LD3015HS

Power Requirements:

LD3015HS

Logic +15VDC (mA)
–15VDC (mA)

180
55

Bus range (VDC) 148-176

General:

LD3015HS

Weight (lbs.) 1.4
Operating Temperature (°C) 0-50

Notes:

1. RMS current limit is a built–in function that turns off or folds back the servo control if the continuous current is exceeded
for an extended period of time. The (EC) fault indicator identifies the condition.

2. Input signal (S) can be differential or single ended while the auxiliary (A) and tachometer (T) signals are single ended
for all models.

3. The Left Limit, Right Limit and external Reset auxiliary input signals are connected through normally open (NO)
contacts while the external status I/0 signal is provided through a bi–directional Interlock. The current sense signal
(DCS) is provided as an analog representation of current. For information on usage, refer to Section 2.

General Information 1-9MN1269