AMETEK ASD Series User Manual

ASD Series

Programmable

Precision High Power

DC Power Supply

DAVINCI POWER™ ENABLED

Operation, Programming and

Maintenance Manual

M551177-01 Rev A www.programmablepower.com

vii

About AMETEK

AMETEK Programmable Power, Inc., a Division of AMETEK, Inc., is a global leader in the design and
manufacture of precision, programmable power supplies for R&D, test and measurement, process control,
power bus simulation and power conditioning applications across diverse industrial segments. From bench
top supplies to rack-mounted industrial power subsystems, AMETEK Programmable Power is the proud
manufacturer of Elgar, Sorensen, California Instruments and Power Ten brand power supplies.

AMETEK, Inc. is a leading global manufacturer of electronic instruments and electromechanical devices with
annualized sales of $2.5 billion. The Company has over 11,000 colleagues working at more than 80
manufacturing facilities and more than 80 sales and service centers in the United States and around the
world.

Trademarks

AMETEK is a registered trademark of AMETEK, Inc.
Other trademarks, registered trademarks, and product names are the property of their respective owners
and are used herein for identification purposes only.

Notice of Copyright

ASD Series Programmable Precision High Power DC Power Supply Operation, Programming and Maintenance
Manual

© 2012 AMETEK Programmable Power, Inc. All rights reserved.

Exclusion for Documentation

UNLESS SPECIFICALLY AGREED TO IN WRITING, AMETEK PROGRAMMABLE POWER, INC.
(“AMETEK”):

(a) MAKES NO WARRANTY AS TO THE ACCURACY, SUFFICIENCY OR SUITABILITY OF ANY TECHNICAL OR

OTHER INFORMATION PROVIDED IN ITS MANUALS OR OTHER DOCUMENTATION.

(b) ASSUMES NO RESPONSIBILITY OR LIABILITY FOR LOSSES, DAMAGES, COSTS OR EXPENSES,

WHETHER SPECIAL, DIRECT, INDIRECT, CONSEQUENTIAL OR INCIDENTAL, WHICH MIGHT ARISE OUT
OF THE USE OF SUCH INFORMATION. THE USE OF ANY SUCH INFORMATION WILL BE ENTIRELY AT
THE USER’S RISK, AND

(c) REMINDS YOU THAT IF THIS MANUAL IS IN ANY LANGUAGE OTHER THAN ENGLISH, ALTHOUGH STEPS

HAVE BEEN TAKEN TO MAINTAIN THE ACCURACY OF THE TRANSLATION, THE ACCURACY CANNOT BE
GUARANTEED. APPROVED AMETEK CONTENT IS CONTAINED WITH THE ENGLISH LANGUAGE
VERSION, WHICH IS POSTED AT WWW.PROGRAMMABLEPOWER.COM.

Date and Revision

June 2012 Revision 01

Part Number

M551177-01

Contact Information

Telephone: [phone] (toll free in North America)
858 450 0085 (direct)

Fax: [phone]
Email: [e-mail]
[e-mail]
Web: www.programmablepower.com

M551177-01 Rev A

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M551177-01 Rev A

ix

WARNING

Hazardous voltages may be present when covers are removed. Qualified
personnel must use extreme caution when servicing this equipment. Circuit
boards, test points, and output voltages also may be floating above (below)
chassis ground.

WARNING

The equipment used contains ESD sensitive ports. When installing equipment,
follow ESD Safety Procedures. Electrostatic discharges might cause damage
to the equipment.

WARNING: Electrical Shock Hazard

HAZARD: Strong oxidizer

GENERAL WARNING/CAUTION: Read the accompanying message for

specific information.

BURN HAZARD: Hot Surface Warning. Allow to cool before servicing.

Do Not Touch: Touching some parts of the instrument without protection or

proper tools could result in damage to the part(s) and/or the instrument.

Technician Symbol: All operations marked with this symbol are to be
performed by qualified maintenance personnel only.

Electrical Ground: This symbol inside the instrument marks the central safety
grounding point for the instrument.

IMPORTANT SAFETY INSTRUCTIONS

Before applying power to the system, verify that your product is configured properly for your particular
application.

Only qualified personnel who deal with attendant hazards in power supplies, are allowed to perform
installation and servicing.

Ensure that the AC power line ground is connected properly to the Power Rack input connector or chassis.
Similarly, other power ground lines including those to application and maintenance equipment must be
grounded properly for both personnel and equipment safety.

Always ensure that facility AC input power is de-energized prior to connecting or disconnecting any cable.
In normal operation, the operator does not have access to hazardous voltages within the chassis. However,

depending on the user’s application configuration, HIGH VOLTAGES HAZARDOUS TO HUMAN SAFETY
may be normally generated on the output terminals. The customer/user must ensure that the output power
lines are labeled properly as to the safety hazards and that any inadvertent contact with hazardous voltages is
eliminated.

Guard against risks of electrical shock during open cover checks by not touching any portion of the electrical
circuits. Even when power is off, capacitors may retain an electrical charge. Use safety glasses during open
cover checks to avoid personal injury by any sudden component failure.

Neither AMETEK Programmable Power Inc., San Diego, California, USA, nor any of the subsidiary sales
organizations can accept any responsibility for personnel, material or inconsequential injury, loss or damage
that results from improper use of the equipment and accessories.

SAFETY SYMBOLS

M551177-01 Rev A

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M551177-01 Rev A

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Product Family: ASD Series Programmable Precision High Power DC Power Supply

Warranty Period: Two (2) years

WARRANTY TERMS

AMETEK Programmable Power, Inc. (“AMETEK”), provides this written warranty covering the Product stated

above, and if the Buyer discovers and notifies AMETEK in writing of any defect in material or workmanship
within the applicable warranty period stated above, then AMETEK may, at its option: repair or replace the
Product; or issue a credit note for the defective Product; or provide the Buyer with replacement parts for the
Product.

The Buyer will, at its expense, return the defective Product or parts thereof to AMETEK in accordance with the
return procedure specified below. AMETEK will, at its expense, deliver the repaired or replaced Product or
parts to the Buyer. Any warranty of AMETEK will not apply if the Buyer is in default under the Purchase Order
Agreement or where the Product or any part thereof:

 is damaged by misuse, accident, negligence or failure to maintain the same as specified or

required by AMETEK;

 is damaged by modifications, alterations or attachments thereto which are not authorized by

AMETEK;

 is installed or operated contrary to the instructions of AMETEK;
 is opened, modified or disassembled in any way without AMETEK’s consent; or
 is used in combination with items, articles or materials not authorized by AMETEK.

The Buyer may not assert any claim that the Products are not in conformity with any warranty until the Buyer
has made all payments to AMETEK provided for in the Purchase Order Agreement.

PRODUCT RETURN PROCEDURE

Request a Return Material Authorization (RMA) number from the repair facility (must be done in the
country in which it was purchased):

 In the USA, contact the AMETEK Repair Department prior to the return of the product to

AMETEK for repair, or submit your request on our website, www.programmablepower.com
and click Support>RMAs.

Telephone: [phone], ext. 2295 or ext. 2463 (toll free North America)
858-450-0085, ext. 2295 or ext. 2463 (direct)

 Outside the United States, contact the nearest Authorized Service Center (ASC). A full listing

can be found either through your local distributor or our website,
www.programmablepower.com, by clicking Support and going to the Service Centers tab.

When requesting an RMA, have the following information ready:

 Model number
 Serial number
 Description of the problem

NOTE: Unauthorized returns will not be accepted and will be returned at the shipper’s expense.
NOTE: A returned product found upon inspection by AMETEK, to be in specification is subject to an

evaluation fee and applicable freight charges.

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M551177-01 Rev A

xiii

FCC NOTICE

This equipment has been tested and found to comply with the limits for a
Class A digital device, pursuant to part 15 of the FCC Rules. These limits
are designed to provide reasonable protection against harmful interference
when the equipment is operated in a commercial environment.
This equipment generates, uses, and can radiate radio frequency energy
and, if not installed and used in accordance with the instruction manual, may
cause harmful interference to radio communications. Operation of this
equipment in a residential area is likely to cause harmful interference in
which case the user will be required to correct the interference at his own
expense.

M551177-01 Rev A

xiv

ABOUT THIS MANUAL

This manual has been written expressly for the Sorensen ASD Series of
power supplies that have been designed and certified to meet the Low
Voltage and Electromagnetic Compatibility Directive Requirements of the
European Community.

These models have been designed and tested to meet the Electromagnetic
Compatibility directive (European Council directive 2004/108/EC; generally
referred to as the EMC directive) and to the requirements of the Low Voltage
directive (European Council directive 2006/95/EC, 93/68/EEC, dated 22 July

1993). In addition these models have been found compliant with FCC 47
CFR Part 15, Subpart B 107(e) Class A, 109(g) Class A.

Since the Low Voltage Directive is to ensure the safety of the equipment
operator, universal graphic symbols have been used both on the unit itself
and in this manual to warn the operator of potentially hazardous situations
(see Safety Notice page).

M551177-01 Rev A

CONTENTS

SECTION 1 OVERVIEW ........................................ 1-21

1.1 General Description ................................................................................................ 1-21

1.2 Specifications ......................................................................................................... 1-22

1.2.1 Environmental Characteristics .....................................................................................1-22

1.2.2 Electrical Characteristics .............................................................................................1-23

1.2.3 Physical Characteristics ...............................................................................................1-24

SECTION 2 INSTALLATION ................................. 2-25

2.1 Inspection ............................................................................................................... 2-25

2.2 Contents of Shipment ............................................................................................. 2-25

2.3 Location and Mounting ........................................................................................... 2-26

2.3.1 Rack .............................................................................................................................2-26

2.3.2 Chassis Removal from Rack .......................................................................................2-27

2.4 Coolant Connections .............................................................................................. 2-27

2.4.1 Water Quality ...............................................................................................................2-27

2.5 Input/Output Electrical Connections ........................................................................ 2-28

2.5.1 Isolated Analog Interface Connections ........................................................................2-29

2.5.2 External Switches ........................................................................................................2-31

2.6 Wire selection ......................................................................................................... 2-33

2.6.1 Wire Size ......................................................................................................................2-33

2.7 Load Considerations .............................................................................................. 2-35

2.7.1 Inductive Loads ............................................................................................................2-35

2.8 Outline Drawings .................................................................................................... 2-36

2.9 Installation Drawings .............................................................................................. 2-38

SECTION 3 OPERATION ......................................... 3-1

3.1 Introduction .............................................................................................................. 3-1

3.2 Front Panel ............................................................................................................... 3-1

M551177-01 Rev A xv

CONTENTS Sorensen ASD Series

3.3 Digital Operation ....................................................................................................... 3-2

3.3.1 Floating and Polarized Output ....................................................................................... 3-2

3.3.2 Initial Setup .................................................................................................................... 3-2

3.3.3 Voltage Mode Operation ............................................................................................... 3-3

3.3.4 Current Mode Operation ............................................................................................... 3-4

3.3.5 Analog Control Connector (J1) ...................................................................................... 3-5

3.4 Remote Current Programming .................................................................................. 3-6

3.4.1 Remote Current Programming Using a 4-20mA current source ................................... 3-6

3.4.2 Remote Current Programming Using a 0-10 VDC Voltage Source .............................. 3-7

3.5 Remote Voltage Programming .................................................................................. 3-9

3.5.1 External Voltage Programming Using a 4-20mA current source .................................. 3-9

3.5.2 External Voltage Programming Using a 0-10 VDC Voltage Source .......................... 3-11

3.6 Remote power programming .................................................................................. 3-13

3.6.1 External power Programming Using a 4-20mA current source .................................. 3-13

3.6.2 External POWER Programming Using a 0-10 VDC Voltage Source .......................... 3-14

3.7 Remote Sensing ..................................................................................................... 3-14

3.8 Remote Output ON/OFF Control ............................................................................ 3-15

3.8.1 Remote Output ON/OFF by Contact Closure ............................................................. 3-15

3.9 Parallel and Series Operation ................................................................................. 3-17

3.9.1 Parallel Operation ........................................................................................................ 3-17

3.9.2 Parallel Operation with an ASD Unit and an SGA Unit ............................................... 3-18

3.9.3 Series Operation ......................................................................................................... 3-20

SECTION 4 PROGRAMMING: DIGITAL INTERFACE

CONTROL............................................ 4-1

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

4.1.1 Features ........................................................................................................................ 4-1

4.1.2 Functions ....................................................................................................................... 4-1

4.2 Command Registers ................................................................................................. 4-2

4.2.1 Read/Write Registers .................................................................................................... 4-2

4.2.2 Read Only Registers ..................................................................................................... 4-3

4.2.3 Command Write Registers ............................................................................................ 4-3

4.3 Advanced Digital Control Features ........................................................................... 4-5

4.3.1 Setpoints ....................................................................................................................... 4-5

4.3.2 Remote Voltage Sensing .............................................................................................. 4-5

4.3.3 Load Impedance Monitor .............................................................................................. 4-5

4.3.4 Default Register Saving ................................................................................................ 4-6

4.3.5 Modbus Timeout ............................................................................................................ 4-6

4.3.6 Flight Data Recorder (FDR) .......................................................................................... 4-7

4.3.7 Programmable Fault Behavior ...................................................................................... 4-9

4.3.8 External Process Control .............................................................................................. 4-9

4.3.9 Programmable Full-Scale Setting ............................................................................... 4-10

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Sorensen ASD Series CONTENTS

4.3.10 Querying Module Information ......................................................................................4-10

4.3.11 Programmable Slew-Rate Limit ...................................................................................4-11

4.3.12 Programmable Low-Pass-Filters .................................................................................4-11

4.3.13 Expected Number of Modules Feature ........................................................................4-12

4.4 List of Registers ...................................................................................................... 4-12

4.5 MODBUS Communications .................................................................................... 4-20

4.5.1 Ethernet – Modbus-TCP ..............................................................................................4-21

4.5.2 Serial – Modbus-RTU ..................................................................................................4-21

4.5.3 Ethernet/IP Interface ....................................................................................................4-22

4.5.4 EtherCAT Interface ......................................................................................................4-23

4.5.5 Supervisory fault codes ...............................................................................................4-26

4.6 MODBUS Control User Interface ............................................................................ 4-28

4.6.1 Making a Connection ...................................................................................................4-28

4.6.2 Ending a Connection ...................................................................................................4-33

4.6.3 Settings Menu ..............................................................................................................4-34

4.6.4 View Menu ...................................................................................................................4-36

4.6.5 Master Controls Page ..................................................................................................4-47

4.6.6 Configuration Page ......................................................................................................4-51

4.6.7 Advanced Settings Page .............................................................................................4-53

SECTION 5 MAINTENANCE ................................... 5-1

5.1 Introduction .............................................................................................................. 5-1

5.2 Preventive Maintenance ........................................................................................... 5-1

5.3 Fuses ....................................................................................................................... 5-3

LIST OF TABLES

Table 2-1. Analog Interface Signals. Standard ASD Pin-out (DB25) ......................... 2-29

Table 2-2. Analog Interface Signals. SG-compatible Pin-out (DB25) ......................... 2-30

Table 2-3. Pin-out of the Reduced Analog Interface Connector (DB9) ...................... 2-30

Table 2-4. Input/Output Connectors .......................................................................... 2-32

Table 2-5. Input Connections .................................................................................... 2-32

Table 2-6. Output Connections ................................................................................. 2-32

Table 2-8. Minimum Wire Size .................................................................................. 2-33

Table 2-9. Wire Resistance and Voltage Drop .......................................................... 2-34

Table 2-10. Recommended Lugs .............................................................................. 2-35

Table 2-12. Recommended Sense Connector Tools ................................................. 2-35

Table 4-1. Master Controller FDR Data ....................................................................... 4-7

Table 4-2. Module Controller FDR Data ...................................................................... 4-8

Table 4-3. Module Data Query Commands ............................................................... 4-11

Table 4-4. Write Registers ........................................................................................ 4-13

Table 4-5. Command Register Bits ........................................................................... 4-15

M551177-01 Rev A xvii

CONTENTS Sorensen ASD Series

Table 4-6. FDR_Period Register Bits ........................................................................ 4-16

Table 4-7. Process_Config Register Bits ................................................................... 4-16

Table 4-8. EtherCAT_Config Register Bit .................................................................. 4-16

Table 4-9. Read Registers ........................................................................................ 4-17

Table 4-10. Status Register Bits ................................................................................ 4-19

Table 4-11. Fault_Bits Register ................................................................................. 4-19

Table 4-12. Module_Information Register Bits ........................................................... 4-20

Table 4-13. Pin-out of the RJ45 Serial Port ............................................................... 4-21

Table 4-14. Registers Available at the EtherCAT Interface ........................................ 4-23

Table 4-15. Commands Bits Required for EtherCAT Operation................................. 4-24

Table 4-16. EtherCAT PDOs and Variables .............................................................. 4-25

Table 4-17. Master Supervisory Fault Codes ............................................................. 4-26

Table 4-18. Module Supervisory Fault Codes ............................................................ 4-27

Table 4-19. Settings Menu Selections ....................................................................... 4-34

Table 5-1. Recommended Annual Inspection .............................................................. 5-2

LIST OF FIGURES

Figure 1-1. Model Number Decoding......................................................................... 1-21

Figure 2-1. Rear Panel Coolant Connectors .............................................................. 2-27

Figure 2-2. Rear Panel Connections: Analog Interface .............................................. 2-28

Figure 2-3. Rear Panel Connections: EtherCAT Interface ......................................... 2-28

Figure 2-4. Diode Connection .................................................................................... 2-36

Figure 2-5. ASD Dimensions, Front View ................................................................... 2-36

Figure 2-6. ASD Dimensions, Top View ................................ ..................................... 2-37

Figure 2-7. Slide Rack Mounting Holes ..................................................................... 2-38

Figure 2-8. Rear Panel AC Connectors ...................................................................... 2-38

Figure 2-9. Rear Panel Bus Bar Connectors .............................................................. 2-39

Figure 3-1. Status LEDs ............................................................................................... 3-1

Figure 3-2. ANALOG CONTROL Connector (J1) Pin-out ............................................. 3-5

Figure 3-3. Remote Current Programming Using Current Source (Digital Option Board)

..................................................................................................................................... 3-6

Figure 3-4. Remote Current Programming Using Current Source (SG compatible Option

Board) .......................................................................................................................... 3-7

Figure 3-5. Remote Current Programming Using Current Source (EtherCAT Option

Board) .......................................................................................................................... 3-7

Figure 3-6. Remote Current Programming Using 0-10 VDC Voltage Source (Digital

Option Board) ............................................................................................................... 3-8

Figure 3-7. Remote Current Programming Using 0-10 VDC Voltage Source (SG

compatible Option Board)............................................................................................. 3-8

Figure 3-8. Remote Current Programming Using 0-10 VDC Voltage Source (EtherCAT

Option Board) ............................................................................................................... 3-8

xviii M551177-01 Rev A

Sorensen ASD Series CONTENTS

Figure 3-9. Remote Voltage Programming Using Current Source (Digital Option Board)

.................................................................................................................................... 3-9

Figure 3-10. Remote Voltage Programming Using Current Source (SG compatible

Option Board) ............................................................................................................ 3-10

Figure 3-11. Remote Voltage Programming Using Current Source (EtherCAT Option

Board) ........................................................................................................................ 3-10

Figure 3-12. Remote Voltage Programming Using 0-10 VDC Voltage Source (Digital

Option Board) ............................................................................................................ 3-11

Figure 3-13. Remote Voltage Programming Using 0-10 VDC Voltage Source (SG

compatible Option Board) .......................................................................................... 3-11

Figure 3-14. Remote Voltage Programming Using 0-10 VDC Voltage Source (EtherCAT

Option Board) ............................................................................................................ 3-12

Figure 3-15. Remote Power Programming Using Current Source (Digital Option Board

only) ........................................................................................................................... 3-13

Figure 3-16. Remote Power Programming Using 0-10 VDC Voltage Source (Digital

Option Board only) ..................................................................................................... 3-14

Figure 3-17. Remote Sensing Operation at the Load ................................................ 3-15

Figure 3-18. Remote Output ON/OFF Control by Contact Closure (Digital Option Board)

.................................................................................................................................. 3-15

Figure 3-19. Remote Output ON/OFF Control by Contact Closure (SG compatiblel

Option Board) ............................................................................................................ 3-16

Figure 3-20. Remote Output ON/OFF Control by Contact Closure (EtherCAT Option

Board) ........................................................................................................................ 3-16

Figure 3-21. Parallel and Remote/Local Sense Connections .................................... 3-18

Figure 3-22. Parallel and Remote Sense Connection of ASD as Master and SG as Slave

.................................................................................................................................. 3-19

Figure 4-1. Block Diagram, External Process Control Feature .................................. 4-10

M551177-01 Rev A xix

CONTENTS Sorensen ASD Series

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xx M551177-01 Rev A

SECTION 1 OVERVIEW

1.1 GENERAL DESCRIPTION

The Sorensen ASD Series with DaVinci Power technology offers the
highest power density available at 30kW in 3U, for precision
programmable AC – DC power conversion. This water-cooled power
supply allows for use in environments that typically exclude air-cooled
power supplies and is designed for industry leading load transient
response with outstanding output ripple and noise characteristics.

The ASD advanced digital architecture and its graphical user interface
allow real-time digital control and monitoring, with a flight data recorder
feature to facilitate diagnosis and maintenance activities.

Figure 1-1 decodes the ASD Series model number.

Figure 1-1. Model Number Decoding

M551177-01 Rev A 1-21

Overview Sorensen ASD Series

Parameter

Specification

Temperature
Coefficient

0.02%/C of maximum output voltage rating for voltage set point.

0.03%/C of maximum output current rating for current set point.

Ambient Temperature

Operating

0 to 50C

Storage

-25 to 65C

Cooling, by water

Flow (gpm)

1.5 nominal, 1.25 minimum, 1.75 maximum
NOTE:
Internal condensation must be prevented by ensuring

that the coolant is sufficiently high compared with the
ambient air dew point.

Temperature

25C nominal, 20C minimum, 30C maximum

Pressure

80 PSI maximum

Pressure drop

Typical 12 PSI @ 1.5gpm per chassis

Humidity

Relative humidity up to 95% maximum, non-condensing

Altitude

Operating full power available up to 5,000 feet (1,524m),
derate 10% of full power for every 1,000 feet higher
non-operating to 40,000 feet (12,192m)

Agency Approvals

NRTL certified to UL/CSA 61010 and IEC/EN 61010-1, CE Compliant,
LVD Categories: Installation Category II: Pollution Degree 2; Class II
Equipment: for Indoor Use Only. Rack mount equipment requires proper
enclosure provided in end use. EMC Directive, EN 661326:1998

1.2 SPECIFICATIONS

The following subsections provide environmental, electrical, and physical
characteristics for the ASD Series power supplies.

Note: Specifications are subject to change without notice.
Note: The ASD Series power supplies are intended for indoor use only. Please refer

to Section 2.3 for use/location requirements.

1.2.1 ENVIRONMENTAL CHARACTERISTICS

1-22 M551177-01 Rev A

Sorensen ASD Series Overview

Parameter

Specification

Input

Voltage Ranges

342 VAC to 440 VAC (model D). Nominal rating is 380/400 VAC
432 VAC to 528 VAC (model E). Nominal rating is 480 VAC

Frequency

Rated 47 through 63 Hz

Efficiency

>91% (typical), nominal line, full load.

Phases

3–phase, 3–wire plus ground. Not phase rotation sensitive. Neutral
not used.

Max Current, per phase, low
line

400/380 VAC

480 VAC

10kW unit (1 module)

21 Arms

17 Arms

20kW unit (2 modules)

42 Arms

33 Arms

30kW unit (3 modules)

63 Arms

50 Arms

Current Inrush

200A Typical

Power Factor

>0.9 @ Full Load and at nominal line

Brownout Provisions

Designed to meet SEMI F47-0706, S3, S8, S14 at nominal input
voltages

Output

Voltage Output

Noise (pk-pk)*
10kW and
20kW units

Noise (RMS)**
10kW and
20kW units

Noise (pk-pk)*
30kW unit

Noise (RMS)**
30kW unit

40Vdc

300mV

80mV

150mV

40mV

60Vdc

300mV

80mV

150mV

40mV

* Measured at the output terminals, with 1uF in parallel with supply operating at full load and nominal input line voltage.
** RMS noise is measured directly across the output terminal with supply operating at full load and nominal input line voltage.

Sense

To compensate load cables voltage drop, units can generate 2%
additional voltage at full scale of output voltage.

Load Regulation (Specified at no load to full load change, nominal AC input)

Voltage

0.1% of maximum output voltage / current

Current

0.1% of maximum output voltage / current

Line Regulation (Specified ±10% of nominal AC input, constant load)

Voltage

0.05% of maximum output voltage / current

Current

0.05% of maximum output voltage / current

Transient Response

A 50% step load will recover to within 0.75% of original value within 1
ms.

Stability

±0.05% of set point over 8 hours at fixed line, load, and temperature,
after 30-minute warm-up

1.2.2 ELECTRICAL CHARACTERISTICS

The voltage accuracy specifications are valid only with remote sense connected.

M551177-01 Rev A 1-23

Overview Sorensen ASD Series

Parameter

Specification

Analog Remote Programming

Voltage Accuracy

0.5% of full-scale

Current Accuracy

1% of full-scale

Power Accuracy

1.5% of full-scale

Voltage Monitoring

0.5% of full-scale

Current Monitoring

1% of full scale

Power Monitoring

1.5% of full-scale

Programming Range

0-10Vdc, 4-20mA

Output Float

Units may be put in series with the float limit of output terminals must
be within ±150V of chassis potential

Parallel

Multiple units can be paralleled to form higher power systems.
Chassis control loops are tied together so that resulting higher power
systems have the same transient response as a 30kW system.

Control commands are only required to be sent to a “master” supply.

Parallel supplies require a shielded CAT 5 cable (STP) and
appropriate output wiring connections by the user.

Calibration

End user calibration is supported. All standard and digital calibration
can be performed without removing covers.

Digital Control (Optional)

1) Ethernet TCP/IP with Modbus-TCP protocol, or

2) RS-485 half-duplex with Modbus-RTU protocol, or

3) Ethernet/IP, or

4) EtherCAT

Analog Control

All control signals are isolated from the outputs.

Dimension

30kW

20kW

10kW

Width

19.00 in (48.3 cm)

19.00 in (48.3 cm)

19.00 in (48.3 cm)

Depth

30.00 in (76.2 cm)

30.00 in (76.2 cm)

30.00 in (76.2 cm)

Height

5.22 in (13.25 cm) rack mount

5.22 in (13.25 cm) rack mount

5.22 in (13.25 cm) rack mount

Weight

125 lbs (56.69 kg)

1.2.3 PHYSICAL CHARACTERISTICS

1-24 M551177-01 Rev A

2.1 INSPECTION

Inspect the shipping carton for possible damage before unpacking the unit.
Carefully unpack the equipment. Save all packing materials until
inspection is complete. Verify that all items listed on the packing slips have
been received. Visually inspect all exterior surfaces for broken knobs,
connectors, or meters. Inspect for dented or damaged exterior surfaces.
External damage may be an indication of internal damage. If any damage
is evident, immediately contact the carrier that delivered the unit and
submit a damage report. Failure to do so could invalidate future claims.
Direct repair issues to Customer Service at 858-458-0223 (local) or 1-800­733-5427(toll free).

SECTION 2 INSTALLATION

2.2 CONTENTS OF SHIPMENT

Depending on the model, configuration, and options available for your
ASD Series power supply, the ship kit may include additional parts and
accessories. At a minimum, the ship kit that accompanies your ASD
Series power supply includes the following items:

 ASD Series DC Power Supplies Operation and programming

Manual (Part No. M551177-01)

 Sense mating connector (Molex P/N 39-01-4031) with loose

contacts (Molex P/N 39-00-0182)

 J1 mating connector (Cinch P/N DB25P or equivalent) normally

shipped attached to rear panel J1

 Back shell for J1 (DB25) mating connector (Amphenol P/N

17E17262 and CINCH P/N DB19678-7)

 Modular terminator (Ametek P/N 5551009-01)
 Water pipe plugs (Caplug P/N P-38B)
 Bolt, lock washer, and nut for output power connections:
 If bus bars installed in unit, four each: 3/8-16 x 1.00” brass screw,

3/8 flat brass washer, and 3/8 split lock brass washer.

M551177-01 Rev A 2-25

Installation Sorensen ASD Series

WARNING!

To reduce the risk of fire or electrical shock, install the ASD Series unit in a
temperature and humidity controlled indoor area, free of conductive contaminants.

CAUTION!

The unit should not be installed in a raised ambient temperature greater than
50°C.

CAUTION!

This unit is intended for installation in a protected environment. No user
serviceable parts inside. Service to be performed by qualified personnel only.

CAUTION!

Ensure that the concentration of ozone is limited to a safe value. The
recommended long-term exposure limit for ozone is 0.1 PPM (0.2 mg/m3).

BURN HAZARD!

Hot Surface Warning. Allow to cool before servicing.

CAUTION!

A minimum three-person lift is required for the ASD Series unit, which
weighs up to 125 lbs (57kg) depending on the model.

 For every module output without bus bar installed, two 3/8-16 x

1.00” brass screws, four 3/8 flat brass washer, two 3/8 split lock

brass washer, and two 3/8-16 brass nuts.

 Black screw, 10-32UNC-2B x ½", front panel rack fastener:
 10-30 kW: 4 ea

Note: If any of these parts are missing, please contact Customer Service
at 858-458-0223 (local) or 1-800-733-5427 (toll free).

2.3 LOCATION AND MOUNTING

Please refer to sections 2.8 and 2.9 for dimensional and installation
drawings, respectively.

2.3.1 RACK

The ASD Series models are designed for mounting in a standard 19-inch
equipment rack. If additional instrumentation is mounted in the rack, no
additional clearance is required above or below units in the ASD Series.

1. Support the unit using rack mount slides or appropriate L brackets
Suggested rack mount slide kit: Jonathan P/N 370EZ-28

2. Secure the unit in place using the screws provided.

2-26 M551177-01 Rev A

Sorensen ASD Series Installation

WARNING!

Avoid risk of electrical shock. Ensure no electrical connections are made
until connections to the fluid fittings are secure and dry. Ensure that no
moisture comes into contact with electrical components or connections.

Do not remove cover. Refer to qualified service personnel.

2.3.2 CHASSIS REMOVAL FROM RACK

The slides have a Front Disconnect Feature and lock at full extension.
To return the chassis back into the rack from full extension, depress the

flat steel spring inward (located on the slides) and push the chassis back.
To disconnect and remove the chassis from the rack, depress the flat steel

spring inward (located on the slides) and pull the chassis forward.
When the chassis is at full extension, the flat springs are located

approximately one (1) inch behind the front EIA RETMA rails. Access the
springs with a flat blade screwdriver or similar device to release from lock­out or to remove the chassis from the rack.

The slides can be mounted to the chassis with this spring oriented on the
top or the bottom of the slide.

2.4 COOLANT CONNECTIONS

Figure 2-1. Rear Panel Coolant Connectors

2.4.1 WATER QUALITY

DO NOT use de-ionized water or distilled water.
The quality of the supplied facility cooling water must have the following

specifications:

 Particulate: Supply filtered to 10 microns.
 Hardness: 60 ppm maximum (calcium & magnesium carbonates)

M551177-01 Rev A 2-27

Installation Sorensen ASD Series

WARNING!

High voltage present! Risk of electrical shock.
Ensure all areas are dry and that there is no leakage around the fluid inlet

or outlet.
Do not remove cover. Refer to qualified service personnel.

CAUTION!

Proper connection to the mains requires a circuit breaker or fuse with a rating of
25% over the maximum input line currents listed in Section 1.2.2.

WARNING!

Under no condition should the negative output terminal exceed 150V to earth
ground.

 Silica: 60 ppm maximum
 TDS( Total Dissolved Solids): 800 ppm maximum
 pH value: maintain slightly alkaline solution 7-8 pH
 Conductivity: Less than 2000 micro-ohms/cm
 Biocides: Use non-chloride based biocidal additives (bactericide,

algaecide) to kill microorganisms and prevent their growth.

 Corrosion: Use corrosion inhibitors to minimize the negative effects of

corrosion. ( Nitrite borate or Sodium nitride).

2.5 INPUT/OUTPUT ELECTRICAL CONNECTIONS

For permanently connected equipment, incorporate a readily accessible
disconnect device in the fixed wiring. For pluggable equipment, install the
socket outlet near the equipment and in an easily accessible location.

Figure 2-2. Rear Panel Connections: Analog Interface

Figure 2-3. Rear Panel Connections: EtherCAT Interface

2-28 M551177-01 Rev A

Sorensen ASD Series Installation

PIN #

PIN NAME

IN/OUT

DESCRIPTION

1

I_MON

A/OUT

a 0-10 VDC monitor signal (or 4-20 mADC) that indicates zero to full scale
output current

2

V_MON

A/OUT

a 0-10 VDC monitor signal (or 4-20 mADC) that indicates zero to full scale
output voltage

3

P_MON

A/OUT

a 0-10 VDC monitor signal (or 4-20 mADC) that indicates zero to full scale
output power

4

V_MODE

D/OUT (*)

LO indicates the unit is not in voltage mode, HI indicates the unit is in
voltage mode if I_MODE is low. If both I_MODE and V_MODE are HI, it
means power mode.

5

I_MODE

D/OUT (*)

LO indicates the unit is not in current mode, HI indicates the unit is in
current mode if V_MODE is low. If both I_MODE and V_MODE are HI, it
means power mode.

6

STATUS

D/OUT (*)

LO indicates output disabled, HI indicates the output is enabled.

7

FAULT

D/OUT (*)

LO indicates normal operation, HI indicates a fault.

8

DOUT_REF

IN

Used to define the output high level of the digital outputs. If not
connected, the output high is 12V. If connected to 24Vdc, the output high
is 24V.

9

GND

common

Same as pin 16

10

+24Vdc

OUT

+24VDC, same as pin 17

11

I_PROG

A/IN

a 0-10 VDC analog input signal (or 4-20 mADC) that programs zero to full
scale output current

12

V_PROG

A/IN

a 0-10 VDC analog input signal (or 4-20 mADC) that programs zero to full
scale output voltage

13

P_PROG

A/IN

a 0-10 VDC analog input signal (or 4-20 mADC) that programs zero to full
scale output power

14

START/STOP

D/IN (**)

LO disables output, HI enables output.

15

RESET

D/IN (**)

LO to HI transition clears faults and warnings.

16

GND

common

Same as pin 9

17

+24Vdc

OUT

+24VDC, same as pin 10

18

GND

common

Same as pin 9

19

GND

common

Same as pin 9

20

Not used

21

Not used

22

RS-485 enable

D/IN

A high level will disable the Ethernet Interface to be able to use Modbus
over RS-485

23

RS-485 A

D/IO

Modbus interface over RS-485

24

RS-485 B

D/IO

Modbus interface over RS-485

25

RS-485 GND

common

Ground for serial interface (it is not isolated from the common ground)

2.5.1 ISOLATED ANALOG INTERFACE CONNECTIONS

Table 2-1 and Table 2-2 describe the available input and output signals at
the DB25 connectors for standard ASD units and the SG compatible
interface. Table 2-3 describes the available input and output signals at the
DB9 connector for ASD units with the EtherCAT interface option. Section

2.9 provides a drawing of the rear panel input/output connector locations.

Table 2-1. Analog Interface Signals. Standard ASD Pin-out (DB25)

Digital signal levels:
(*) Digital output low is 0V (<0.5V), output high is either 12V or 24V (+/-1V), depending
on pin 8.
(**) Digital input low is 0.5V or lower, input high is 8V or higher.

M551177-01 Rev A 2-29

Installation Sorensen ASD Series

PIN #

PIN NAME

IN/OUT

DESCRIPTION

1

Not used.

2

Not used.

3

Not used.

4

GND

common

5 ON/OFF

D/IN

LO = 0 VDC enables output, HI > 8 VDC disables output.

6

GND

common

7

I_MON

A/OUT

a 0-10 VDC monitor signal (or 4-20 mADC) that indicates zero to full
scale output current. (Zout ~ 10 ohms for voltage signal)

8

Not used.

9

Not used.

10

Not used.

11

Not used.

12

Not used.

13

Not used.

14

Not used.

15

V_PROG

A/IN

a 0-10 VDC analog input signal (or 4-20 mADC) that programs zero to
full scale output voltage. (Zin ~ 200 Kohms for voltage signal)

16

I_PROG

A/IN

a 0-10 VDC analog input signal (or 4-20 mADC) that programs zero to
full scale output current. (Zin ~ 200 Kohms for voltage signal)

17

FAULT

D/OUT

LO = 0 VDC indicates normal operation, HI = 12 VDC indicates a fault.
See Table 4-11 for a list of faults and their description.

18

Not used.

19

V_MON

A/OUT

a 0-10 VDC monitor signal (or 4-20 mADC) that indicates zero to full
scale output voltage. (Zout ~ 10 ohms for voltage signal)

20

GND

common

21

Not used.

22

Not used.

23

GND

common

24

GND

common

25

GND

common

PIN #

PIN NAME

IN/OUT

DESCRIPTION

1

RS-485 A

D/IO

Modbus-RTU interface

2

START/STOP

D/IN (**)

LO disables output, HI enables output.

3

+24Vdc

OUT

+24VDC output, 100mA max

4

I_PROG

A/IN

a 0-10 VDC analog input signal (or 4-20 mADC) that programs zero to
full scale output current

5

GND

-

ground

6

RS-485 B

D/IO

Modbus-RTU interface

7

STATUS

D/OUT

LO indicates output disabled, HI indicates the output is enabled.

8

V_MODE

D/OUT

LO indicates the unit is not in voltage mode, HI indicates the unit is in
voltage mode.

9

V_PROG

A/IN

a 0-10 VDC analog input signal (or 4-20 mADC) that programs zero to
full scale output voltage

Table 2-2. Analog Interface Signals. SG-compatible Pin-out (DB25)

Table 2-3. Pin-out of the Reduced Analog Interface Connector (DB9)

2-30 M551177-01 Rev A

Sorensen ASD Series Installation

Switch
number

Description

1

DOWN (on) = 0 – 10 VDC monitor signals and analog programming
references

UP (off) = 4 – 20 mADC monitor signals and analog programming
references. If the input current is lower than 2 mA, the unit will generate
a fault.

2

DOWN (on) = remote voltage sense disabled.
UP (off) = remote voltage sense enabled.

3

DOWN (on) = master enabled (sets the master as active).
UP (off) = master disabled (the modules in the chassis will operate with

an external master).

4 to 7

Unit address or expected number of modules, depending on switch

8.Use these switches to define a binary number from 0 to 15 (1111 in
binary), switch 4 is the least significant bit and switch 7 the most
significant.

DOWN (on) is a binary ZERO
UP (off) is a binary ONE
The unit address or expected number of modules will be the binary

value plus one (giving a range of 1 to 16).

8

DOWN (on) = switches 4-7 are used to set the unit address, necessary
for the digital interface.

UP (off) = switches 4-7 are used to indicate the power supply how many
modules it should expect to discover. For more details please see the
description of the expected number of modules feature.

2.5.2 EXTERNAL SWITCHES

The eight position DIP switch labeled DGTL SETUP is used for power
supply configuration. The following table lists each position and its
function:

M551177-01 Rev A 2-31

Installation Sorensen ASD Series

Connector

Function

Connects To

FL1 – AC
FL1 – AC
FL1 – AC
Chassis - GND

Prime AC Power Input
See Table 2-5.
Not phase rotation sensitive. Neutral not
used.

380/400 VAC (Option)
440/480 VAC (Option)
47-63 Hz, 400 Hz

Pos. Bus Bar
Neg. Bus Bar

Output Power:
(see Table 2-6)

User load(s)

ANALOG CONTROL
Connector (J1)

Control Interface

See 3.3.5 for description

Sense Connector

Used for remote sense

Refer to Section 3.7

Parallel In-Out

Used for parallel operation

Refer to Section 3.9

Connection

Description

Input AC connector

Feed through high current terminal block

Connection

Description

Bus Bar

Bus Bar with two holes for each potential terminal 3/8”.

Module terminals

Output terminals with holes for 3/8" bolts (40V-60V)

CAUTION!

Prevent damage to the unit: follow torque specifications, use correct size
wire ferrule (if used), and proper size ferrule crimping tool.

Table 2-4. Input/Output Connectors

Table 2-5. Input Connections

Table 2-6. Output Connections

TORQUE SPECIFICATIONS

 The unit’s Phoenix Connectors require 18 in-lb to 20 in-lb (2 Nm to

2.3 Nm) torque.

 Wire ferrules are recommended; their size must match the wire

gauge.

 Crimp tool size must be appropriate to the ferrule size.
 Wire insulation should be stripped back no more than 5/8 inch for the

ferrule.

For more information on this AC input connector, please look up Phoenix
Contact part number HDFKV 16 at www.phoenixcontact.com.

2-32 M551177-01 Rev A

Sorensen ASD Series Installation

Size

Temperature Rating of Copper Conductor

AWG
MCM

60°C

75°C

85°C

90°C

Types: RUW,

T, TW, UF

Types: FEPW,

RHW, RH, RUH,

THW, THWN,

XHHW, USE, ZW

Types: V, MI

Types: TA, TBS,
SA, AVB, SIS, FEP,
FEPB, RHH, THHN,

XHHW

Current Rating

14

20

20

25

25

12

25

25

30

30

10

30

35

40

40 8 40

50

55

55 6 55

65

70

75 4 70

85

95

95 3 85

100

110

110

2

95

115

125

130

1

110

130

145

150

0

125

150

165

170

00

145

175

190

195

000

165

200

215

225

0000

195

230

250

260

2.6 WIRE SELECTION

Care must be taken to properly size all conductors for the input and output
of the power supply. This section provides guidance in the selection of
wire size. Note that cables with Class B or C stranding should be used.
Fine stranded cables should not be used unless crimp-on lugs or ferrules
are used that are approved for fine stranded cables.

2.6.1 WIRE SIZE

The tables below will assist in determining the appropriate wire size for
both the input and output connections Table 2-7 below gives minimum
recommended wire size. This table is derived from the National Electrical
Code; it is for reference only. Local laws and conditions may have
different requirements. Note that these recommendations are for copper
wire only. For higher ratings, wires can be paralleled; refer to the National
Electrical Code.

Table 2-7. Minimum Wire Size

M551177-01 Rev A 2-33

Installation Sorensen ASD Series

Column 1

Column 2

Column 3

Column 4

Size

Amperes

Ohms/100 Feet

Voltage Drop/100 Feet

14

20

0.257

5.14

12

25

0.162

4.05

10

30

0.102

3.06

8

40

0.064

2.56

6

55

0.043

2.36

4

70

0.025

1.75

2

95

0.015

1.42

1/0

125

0.010

1.25

3/0

165

0.006

1.04

When determining the optimum cable specification for your power
applications, the same engineering rules apply whether going into or out of
an electrical device. Thus, this guide applies equally to the input cable
and output cable for this Sorensen instrument and application loads.

Power cables must be able to safely carry maximum load current without
overheating or causing insulation destruction. It is important to everyday
performance to minimize IR (voltage drop) loss within the cable. These
losses have a direct effect on the quality of power delivered to and from
instruments and corresponding loads.

When specifying wire gauge, consider the operating temperature. Wire
gauge current capability and insulation performance drops with the
increased temperature developed within a cable bundle and with
increased environmental temperature. Thus, short cables with generously
derated gauge and insulation properties are recommended for power
source applications.

Be careful when using published commercial utility wiring codes. These
codes are designed for the internal wiring of homes and buildings and
accommodate the safety factors of wiring loss, heat, breakdown insulation,
aging, etc. However, these codes consider that up to 5% voltage drop is
acceptable.

Such a loss directly detracts from the quality performance specifications of
this Sorensen instrument. Also, consider how the wiring codes apply to
bundles of wire within a cable arrangement.

In high performance applications requiring high inrush/ transient currents,
additional consideration is required. The cable wire gauge must consider
peak voltages and currents, which may be up to ten times the average
values. An underrated wire gauge adds losses, which alter the inrush
characteristics of the application and thus the expected performance.

Table 2-8 presents wire resistance and resulting cable voltage drop at maximum
rated current.

Table 2-8. Wire Resistance and Voltage Drop

Refer to Section 1.2.2 for AC input and output current requirements.

2-34 M551177-01 Rev A

Sorensen ASD Series Installation

Lug Manufacturer

Input/Output

Panduit

“PN” Series or equivalent

”LCAN” Series for higher current

Note: Contact lug manufacturer for recommended crimping tool.

Tool

Manufacturer

Manufacturer P/N

Crimping

Molex

11-01-0197

Extracting

Molex

11-03-0044

Refer to Table 2-9 for input/output lug recommendations.

Table 2-9. Recommended Lugs

The recommended tools for crimping and extraction of the sense
connector pins are listed below in Table 2-10.

Table 2-10. Recommended Sense Connector Tools

2.7 LOAD CONSIDERATIONS

This section provides guidelines for using properly rated diodes to protect
the power supply from damage while driving inductive loads.

2.7.1 INDUCTIVE LOADS

To prevent damage to the power supply from inductive kickback, connect

a diode (rated at greater than the supply’s output voltage and current)

across the output. Connect the cathode to the positive output and the
anode to return. Where positive load transients such as back EMF from a
motor may occur, a second diode in series with the output is
recommended to protect the power supply.

BLOCKING AND FREE WHEELING DIODES

The Peak Reverse Voltage ratings should be a minimum of 2-3 times the
Power Supply maximum output voltage. The Continuous Forward Current
ratings should be a minimum of 1.5 times the Power Supply maximum
output current. Heatsink may be required. There also may be a need for
higher voltage rated parts, dependent on load circuit design and inductor
values.

M551177-01 Rev A 2-35

Installation Sorensen ASD Series

Figure 2-4. Diode Connection

2.8 OUTLINE DRAWINGS

Figure 2-5. ASD Dimensions, Front View

2-36 M551177-01 Rev A

Sorensen ASD Series Installation

Figure 2-6. ASD Dimensions, Top View

M551177-01 Rev A 2-37

Installation Sorensen ASD Series

2.9 INSTALLATION DRAWINGS

Figure 2-7. Slide Rack Mounting Holes

Figure 2-8. Rear Panel AC Connectors

2-38 M551177-01 Rev A

Sorensen ASD Series Installation

Figure 2-9. Rear Panel Bus Bar Connectors

M551177-01 Rev A 2-39

Installation Sorensen ASD Series

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2-40 M551177-01 Rev A

WARNING!
The power-up factory default state is output enabled.

3.1 INTRODUCTION

This section begins with a description of the ASD power supply front and rear panels
and then presents the user interface for operating the power supply.

SECTION 3 OPERATION

3.2 FRONT PANEL

The ASD front panel has LEDs to indicate the status of the power supply and of the
modules.

Figure 3-1. Status LEDs

The MODULE LEDs represent the modules inside the unit by location:
from the view of the front panel, MODULE 1 is located at the left side of
the unit; MODULE 2 is in the center; MODULE 3 is located at the right.

The LED labeled “AC INPUT” indicates that the unit is powered and also

shows the unit and master controller condition based on the color code.
The LED color codes for the MODULE and AC INPUT are as follows:

 Green = normal condition of the module or unit.
 Yellow = abnormal condition (warning or not severe fault).
 Red = severe fault that shuts down the module or unit.

The LED labeled “OUTPUT ON” is green when the power supply has set the output to

active mode. If it is off it means that the internal power stages are not active.

M551177-01 Rev A 3-1

Operation Sorensen ASD Series

WARNING!
The power-up factory default state is output enabled.

3.3 DIGITAL OPERATION

The ASD Series power supply is shipped from the factory configured for
local voltage/current control and local voltage sensing. The ANALOG
CONTROL connector is supplied with a mating connector with remote
output ON/OFF jumper for ON (terminal 5 shorted to terminal 6 on unit
with SG compatible option board, terminal 14 shorted to terminal 17 on
unit with digital option board, or terminal 2 shorted to terminal 3 on unit
with EtherCAT option board).

3.3.1 FLOATING AND POLARIZED OUTPUT

The ASD Series supply can be set up for a Positive or Negative supply, as
well as standard operation as a floating output supply.

FLOATING OUTPUT

The output terminals are normally floating from chassis ground. No extra
steps or connections are required for a floating output.

POSITIVE SUPPLY SETUP

Attach the negative output terminal to the supply chassis. The output
reference is now chassis ground. When the output voltage is set or
programmed, the supply will output a positive potential from chassis ground.

NEGATIVE SUPPLY SETUP

Attach the Positive output terminal to the supply chassis. The output reference
is now chassis ground. When the output voltage is set or programmed, the
supply will output a negative potential from chassis ground.

3.3.2 INITIAL SETUP

1. Check the ANALOG CONTROL (J1) mating connector on the rear panel to verify
that the appropriate pins are shorted together to enable the output of the supply
(see Section 3.8). This is the default configuration installed from the factory.
(Terminal 5 shorted to terminal 6 on unit with SG compatible option board,
terminal 14 shorted to terminal 17 on unit with digital option board, or terminal 2
shorted to terminal 3 on unit with EtherCAT Option Board).

2. Apply power to the AC mains input.

3-2 M551177-01 Rev A

Sorensen ASD Series Operation

3.3.3 VOLTAGE MODE OPERATION

When the supply is in the Voltage mode, the output voltage of the supply
is controlled by the digital Voltage setpoint on the MODBUS control
interface GUI or by the remote voltage input. See Section 3.5. The digital
Current setpoint (or remote current input) operates as a current limit. The
output voltage is regulated at the selected value while the output current
varies with the load requirements. To verify operation in Voltage mode,
follow the steps below:

1. Connect a digital voltmeter (DVM) across the rear panel positive
and negative output terminals, observing the correct polarity.
Make sure the DVM is in the dc voltage mode and the range is
adequate to handle the full-scale voltage of the power supply.

2. Apply input voltage to power supply

3. Once the MODBUS control interface is connected to power supply
(See 4.6.1), Set the Current and power setpoint sliders above 0
Amps and 0 watts. Slowly increase the Voltage setpoint slider and
observe both the unit readback on Master controls tab and the
output of the DVM. The minimum range should be from 0V to the
maximum rated voltage output of the supply. The unit readback
and DVM readings should track within the accuracies of the meter
and the readback.

4. Check that in unit readings, Vmode box is black meaning that unit
is in voltage mode. Turn the Voltage setpoint and Current setpoint
fully to zero.

5. Turn power supply input voltage off.

If Voltage mode operation did not function as indicated above, recheck
your setup and perform the check again. If the function continues to fail,
contact the factory for assistance.

M551177-01 Rev A 3-3

Operation Sorensen ASD Series

3.3.4 CURRENT MODE OPERATION

When the supply is in the Current Mode, the output current of the supply is
controlled by the Current setpoint slider on the master controls tab on GUI
or by the remote current input (see Section 3.4). The Voltage setpoint
slider (or remote voltage input) operates as a voltage limit. To verify
operation in current mode, follow the steps below:

1. Connect a high current DC ammeter across the rear panel positive
and negative output terminals, observing the correct polarity.

2. Select wire leads of sufficient current carrying capacity and an
ammeter range compatible with the unit’s maximum rated output
current.
Note: If a high current ammeter is not available, you may simply
short the output terminals together. This will not harm the supply.

3. Turn the input voltage to the power supply on.

4. Once the MODBUS control interface is connected to power supply
(See Section 4.6.1), set the Voltage and power setpoint sliders
above zero volts and zero watts (this sets the Voltage limit at a
nominal setting above 0 Volts and forces the supply into current
mode).

5. Slowly increase the Current slider and observe both the unit
readback and the output of the ammeter.

The minimum range should be from 0A to the maximum rated
current output of the supply.

The GUI unit readback and ammeter readings should track within
the accuracies of the meter and the GUI unit readbacks

6. Check that in Master controls tab and unit readbacks, the Imode
box is black.

7. Decrease the Voltage slider and Current slider fully to zero.

8. Turn the input voltage to the power supply off.

9. Disconnect the ammeter or short from the output terminals.

If Current Mode operation did not function as indicated above, recheck
your setup and perform the check again. If the function continues to fail,
contact the factory for assistance.

3-4 M551177-01 Rev A

Sorensen ASD Series Operation

CAUTION!

This option is not intended to allow operation of the power supply at
excessive voltages. Refer to Section 2 INSTALLATION for maximum
terminal voltages.

3.3.5 ANALOG CONTROL CONNECTOR (J1)

The ANALOG CONTROL connector on the rear panel allows the unit to be
configured for different operating configurations: digital and analog current
programming, digital and analog voltage programming, current and
voltage output monitoring, output enable/disable, etc. The setup and
operating requirements of each configuration are provided in Sections 3.4
through 3.9.

ISOLATED ANALOG CONTROL

The Isolated Analog Control uses the Analog Control connector (J1). This
option fully isolates remote control signals and allows control of units not
connected to a common ground. Control ground is isolated from power
ground, which protects against potential damage from systems with high
electrical noise or large ground loop currents. The isolated analog control
is standard on digital option board, SG compatible board, and EtherCAT
option.

Figure 3-2 shows the J1 connector's pin-out diagram. Refer to Table 2-1,
Table 2-2 and Table 2-3 for the ANALOG CONTROL connector
designations and functions:

Figure 3-2. ANALOG CONTROL Connector (J1) Pin-out

M551177-01 Rev A 3-5

Operation Sorensen ASD Series

1

13

25

14

AGND

I_PROG

9

11

4-20mA

Current source

3.4 REMOTE CURRENT PROGRAMMING

Remote current programming is used for applications that require the
output current be programmed (controlled) from a remote source. An
external voltage source may be used as a programming device.

When using remote current programming, a shielded, twisted-pair, hookup
wire is recommended to prevent noise interference with programming
signals.

3.4.1 REMOTE CURRENT PROGRAMMING USING A 4-20MA CURRENT

SOURCE

The current source coefficient for remote current programming is
16mA/100% rated output with respect to AGND (terminal 9 on digital
option board, terminal 20 on SG compatible option board, or terminal 5 on
EtherCAT Option Board). The programming current from I_PROG
(terminal 11 on digital option board, terminal 16 on SG compatible option
board, or terminal 4 on EtherCAT Option Board) it should be from 4mA to
20mA. This yields a coefficient of 1.0% of rated output current for each

0.16mA. See Figure 3-3 through Figure 3-5 for connection requirements.

Figure 3-3. Remote Current Programming Using Current Source (Digital Option Board)

3-6 M551177-01 Rev A

Sorensen ASD Series Operation

1

13

25

14

I_PROG

AGND

4-20mA

Current source

16

20

1

5

6

9

4

I_PROG

AGND

4-20mA

Current source

Figure 3-4. Remote Current Programming Using Current Source (SG compatible Option

Board)

Figure 3-5. Remote Current Programming Using Current Source (EtherCAT Option Board)

3.4.2 REMOTE CURRENT PROGRAMMING USING A 0-10 VDC VOLTAGE

SOURCE

A DC voltage source for remote current programming is connected
between I_PROG (terminal 11 on digital option board, terminal 16 on SG
compatible option board, or terminal 4 on EtherCAT Option Board) and the
return terminal AGND (terminal 9 on digital option board, terminal 20 on
SG compatible option board, or terminal 5 on EtherCAT Option Board).

The voltage coefficient for 10V remote current programming is 100

M551177-01 Rev A 3-7

millivolts = 1% of rated output, i.e., for a 500 amp model, each 100
millivolts of programming voltage equals 5 amps of output current. See
Figure 3-6 to Figure 3-8 for connection requirements.

Operation Sorensen ASD Series

1

13

25

14

AGND

I_PROG

9

11

0-10V

Voltage source

+

-

1

13

25

14

+

-

0-10V

Voltage source

I_PROG

AGND

16

20

1

5

6

9

4

+

-

I_PROG

AGND

0-10V

Voltage source

Figure 3-6. Remote Current Programming Using 0-10 VDC Voltage Source (Digital Option

Board)

Figure 3-7. Remote Current Programming Using 0-10 VDC Voltage Source (SG compatible

Figure 3-8. Remote Current Programming Using 0-10 VDC Voltage Source (EtherCAT

3-8 M551177-01 Rev A

Option Board)

Option Board)

Sorensen ASD Series Operation

1

13

25

14

AGND

V_PROG

9

12

4-20mA

Current source

3.5 REMOTE VOLTAGE PROGRAMMING

Remote voltage programming configuration is used for applications that
require the output voltage be programmed (controlled) from a remote
source. An external 4-20mA current source or external voltage source
may be used as a programming device. When using remote voltage
programming, a shielded, twisted-pair, hookup wire is recommended to
prevent noise interference with programming signals.

3.5.1 EXTERNAL VOLTAGE PROGRAMMING USING A 4-20MA CURRENT

SOURCE

The current source coefficient for remote voltage programming is
16mA/100% of rated output voltage with respect AGND (terminal 9 on
digital option board, terminal 20 on SG compatible option board, or
terminal 5 on EtherCAT Option Board). The programming current from
terminal V_PROG (terminal 12 on digital option board, terminal 15 on SG
compatible option board, or terminal 9 on EtherCAT Option Board) should
be a 4-20mA current source. This yields a coefficient of 1.0% of rated
output voltage for each 0.16mA.

See Figure 3-9 to Figure 3-11 for connection requirements.

Figure 3-9. Remote Voltage Programming Using Current Source (Digital Option Board)

M551177-01 Rev A 3-9

Operation Sorensen ASD Series

1

25

14

15

20

4-20mA

Current source

V_PROG

AGND

13

1

5

6

9

V_PROG

AGND

4-20mA

Current source

Figure 3-10. Remote Voltage Programming Using Current Source (SG compatible Option

Board)

Figure 3-11. Remote Voltage Programming Using Current Source (EtherCAT Option

Board)

3-10 M551177-01 Rev A

Sorensen ASD Series Operation

1

13

25

14

AGND

V_PROG

9

12

0-10V

Voltage source

+

-

1

13

25

14

+

-

15

20

0-10V

Voltage source

V_PROG

AGND

3.5.2 EXTERNAL VOLTAGE PROGRAMMING USING A

0-10 VDC VOLTAGE SOURCE

A DC voltage source for remote voltage programming is connected
between V_PROG (terminal 12 on digital option board, terminal 15 on SG
compatible option board, or terminal 9 on EtherCAT Option Board) and the
return terminal AGND (terminal 9 on digital option board, terminal 20 on
SG compatible option board, or terminal 5 on EtherCAT Option Board).

The voltage coefficient for 10V remote voltage programming is 10 volts =
100% of rated output voltage. See Figure 3-12 to Figure 3-14 for
connection requirements.

Figure 3-12. Remote Voltage Programming Using 0-10 VDC Voltage Source (Digital

Option Board)

Figure 3-13. Remote Voltage Programming Using 0-10 VDC Voltage Source (SG

compatible Option Board)

M551177-01 Rev A 3-11

Operation Sorensen ASD Series

1

5

6

9

+

-

V_PROG

AGND

0-10V

Voltage source

Figure 3-14. Remote Voltage Programming Using 0-10 VDC Voltage Source (EtherCAT

Option Board)

3-12 M551177-01 Rev A

Sorensen ASD Series Operation

3.6 REMOTE POWER PROGRAMMING

Remote power programming configuration is used for applications that
require the output power be programmed (controlled) from a remote
source. An external 4-20mA current source or external voltage source
may be used as a programming device. When using remote power
programming, a shielded, twisted-pair, hookup wire is recommended to
prevent noise interference with programming signals.

3.6.1 EXTERNAL POWER PROGRAMMING USING A 4-20MA CURRENT

SOURCE

The current source coefficient for remote power programming is
16mA/100% of rated output power with respect to GND, J1-9. The
programming current from terminal J1-13 (P_PROG) should be a 4-20mA
current source. This yields a coefficient of 1.0% of rated output power for
each 0.16mA. See Figure 3-15 for connection requirements.

Figure 3-15. Remote Power Programming Using Current Source (Digital Option Board

only)

M551177-01 Rev A 3-13

Operation Sorensen ASD Series

1

13

25

14

AGND

P_PROG

9

0-10V

Voltage source

+

-

3.6.2 EXTERNAL POWER PROGRAMMING USING A 0-10 VDC VOLTAGE

SOURCE

A DC voltage source for remote power programming is connected
between J1-13 (P_PROG) and return terminal J1-9 (GND). The voltage
coefficient for 10V remote power programming is 10 volts = 100% of rated
output power. See Figure 3-16 for connection requirements.

Figure 3-16. Remote Power Programming Using 0-10 VDC Voltage Source (Digital Option

Board only)

3.7 REMOTE SENSING

Remote voltage sensing is recommended at all times, whether you
connect sensing leads to the load or directly to the output terminals.
Remote sensing at the load provides the best load regulation.

In applications where the load is located some distance from the power
supply, or the voltage drop of the power output leads significantly
interferes with load regulation, remote voltage sensing should definitely be
used.

The voltage accuracy specifications are valid only with remote sense
connected. Disconnecting the remote sense leads will introduce an error,
with the output voltage increasing.

To use remote voltage sensing, connect the power supply as described
below. See Figure 3-17 for connection requirements.

Connect sensing leads from the load positive to J3-1 and the load
negative to J3-3. A shielded, twisted-pair, hookup wire is recommended to
avoid potential noise interference.

3-14 M551177-01 Rev A

Sorensen ASD Series Operation

+ -

1 2 3

LOAD

SUPPLY

OUTPUT

TERMINALS

Pin 1: Sense(+)

Pin 3: Sense(-)

1

13

25

14

17

ON/OFF

Figure 3-17. Remote Sensing Operation at the Load

3.8 REMOTE OUTPUT ON/OFF CONTROL

Remote output on/off control may be accomplished by contact closure or
by an isolated external DC voltage source.

3.8.1 REMOTE OUTPUT ON/OFF BY CONTACT CLOSURE

Output is on when contacts are closed. Connection requirements are as
follows:

Terminals 14 and 17 on unit with digital option board (Figure 3-18)
Terminals 5 and 6 on unit with SG compatible option board (Figure 3-19)
Terminal 2 and 3 on unit with EtherCAT option board (Figure 3-20)

Figure 3-18. Remote Output ON/OFF Control by Contact Closure (Digital Option Board)

M551177-01 Rev A 3-15

Operation Sorensen ASD Series

1

25

14

6

ON/OFF 5

1

5

6

9

2
3

ON/OFF

Figure 3-19. Remote Output ON/OFF Control by Contact Closure (SG compatible Option

Board)

Figure 3-20. Remote Output ON/OFF Control by Contact Closure (EtherCAT Option

Board)

3-16 M551177-01 Rev A

Sorensen ASD Series Operation

3.9 PARALLEL AND SERIES OPERATION

The following modes of operation are used for applications requiring more
current or voltage than is available from a single power supply. To meet
the requirements for greater output voltage or current, two supplies may
be connected in series (Section 3.9.3), or up to ten power supplies can be
connected in parallel (Section 3.9.1).

Another option may be to connect an ASD unit with an SGA unit in parallel
when requiring greater output current than a single power supply can
provide (Section 3.9.2).

3.9.1 PARALLEL OPERATION

In order to connect up to ten power supplies in parallel, use a daisy-chain
wiring configuration as follows (refer to Figure 3-21):

(Note that there are two separate RJ-45 connectors on the upper left rear

panel of each power supply, marked INTERFACE #1 “PAR OUT” and

“PAR IN”).

1. Beginning with the power supply designated (by you) to have the

active master controller, use an interface cable (Shielded CAT 5

cable) to connect the PAR OUT connector on the designated

active master controller to the PAR IN connector on the second
power supply (unit 2).

2. On the second power supply (unit 2), use another interface cable

to connect the PAR OUT connector to the third power supply’s

(unit 3) PAR IN connector. Continue these interconnections up to a
maximum of 10 power supplies.

3. Install the bus termination on both ends of the group, the first and
last unit, which are provided with the units. On the first unit install

on “PAR IN” and on the last unit install on “PAR OUT” of

INTERFACE #1.

4. Connect the Positive output terminals of all the power supplies and
the Load.

5. Connect the Negative output terminals of all the power supplies
and the load.

6. Confirm that there are no shorts between the Positive and
Negative output terminals.

7. Referring to Figure 3-21, connect twisted pair cables as follows:
For Remote Sense, the active master controller shall have a twisted pair from

its own SENSE terminals to the Load’s output terminals.
For Local Sense, the active master controller shall have a twisted pair from its

own SENSE terminals to its own output terminals.
Ensure that all twisted pair cables are as short as possible.

M551177-01 Rev A 3-17

Operation Sorensen ASD Series

Figure 3-21. Parallel and Remote/Local Sense Connections

Note: The OVP circuit remains active for all units in parallel operation.

3.9.2 PARALLEL OPERATION WITH AN ASD UNIT AND AN SGA UNIT

The following modes of operation are used for applications requiring more
current than is available from a single power supply. To meet the
requirements for greater output current, two supplies may be connected in
parallel.

In order to connect two power supplies in parallel, use a “Master/Slave”

wiring configuration as follows (refer to Figure 3-22):
(Note that in ASD unit there is a 25-pin connector and on SG unit there are

two separate 9-pin connectors on the upper left rear panel of each power

supply, marked “ANALOG INTERFACE” and “PAR OUT” and “PAR IN”

respectively).

3-18 M551177-01 Rev A

Sorensen ASD Series Operation

1. Beginning with the ASD power supply designated as the Master
power supply, use an interface cable (P/N 5551189-01) to connect
the ANALOG INTERFACE connector on the ASD power supply to
the PAR IN and PAR OUT connectors on the second power supply
(Slave).

2. Connect the Positive output terminals of all the power supplies and
the Load.

3. Connect the Negative output terminals of all the power supplies
and the load.

4. Confirm that there are no shorts between the Positive and
Negative output terminals.

5. Connect twisted pair cables as follows:
The slave unit shall have twisted pair from its SENSE terminals to its output

terminals, as appropriate.
For Remote Sense, the master unit shall have a twisted pair from its own

SENSE terminals to the Load’s output terminals.
For Local Sense, the master unit shall have a twisted pair from its own

SENSE terminals to its own output terminals.
Ensure that all twisted pair cables are as short as possible.

Figure 3-22. Parallel and Remote Sense Connection of ASD as Master and SG as Slave

M551177-01 Rev A 3-19

Operation Sorensen ASD Series

Note: The OVP circuit remains active for all units in parallel operation. For
ease of use, adjust the OVP level for the slave to maximum and adjust the
master OVP level to the desired setting.

3.9.3 SERIES OPERATION

Series operation is used to obtain a higher voltage single output supply
using two units. To set up series operation:

Connect the negative terminal (–) of one supply to the positive terminal (+)
of the next supply of the same model. The total voltage available is the
sum of the maximum voltages of each supply (add voltmeter readings).

Notes:

 Under no condition should the negative (–) output terminal of any

power supply exceed 150V to Earth ground. This is limited by the
creepage/clearance distances internal to the construction. If a
higher output voltage range is required, contact the Sales
Department or Customer Service for availability.

 The maximum allowable current for a series string of power

supplies is the rated output current of a single supply in the string.

 Remote sensing should not be used during series operation.
 A free-wheeling diode (power diode capable of the maximum

current of the series set connected in parallel, but reverse biased)
is recommended to protect against sinking current into a supply
should one supply be “ON” while the other is “OFF.” (See Section

2.7.1).

3-20 M551177-01 Rev A

SECTION 4 PROGRAMMING: DIGITAL

4.1 INTRODUCTION

This section covers the set up and remote operation of the ASD DC power
supply, including a description of the digital interface, the registers, the
communications interfaces, and the graphical user interface.

INTERFACE CONTROL

4.1.1 FEATURES

The ASD advanced digital architecture includes:

 Real-time digital control
 Graphical display of signals, internal variable, and device status
 Advanced Diagnostics And Maintenance (ADAM)
 Choice of communications interface options:
 Ethernet TCP/IP with MODBUS-TCP protocol
 RS-485 half-duplex with MODBUS-RTU protocol
 Ethernet/IP
 EtherCAT

4.1.2 FUNCTIONS

General functions of the digital interface include:

 Readback of:
 Outputs
 Status
 Warnings
 Faults
 Inputs for
 Enabling output

M551177-01 Rev A 4-1

Programming: Digital Interface Control Sorensen ASD Series

 Controlling setpoints
 Programming system shutdowns through selectable faults
 Monitoring load protection
 Controlling external processes

4.2 COMMAND REGISTERS

The power supply has two sets of registers, one for writing setpoints and
configuration (read/write registers) and the other for reading unit and
module status and measurements (read only registers). Each register is
16 bits wide.

4.2.1 READ/WRITE REGISTERS

Operating the power supply through the digital interface involves reading
and writing data to a few important registers.

In the Command write register (address 0x0), enabling of the power

supply’s output is controlled by bit 1 (COMMAND_BIT_ON). Writing a “1”

to this bit enables the output and writing a “0” disables the output.
In the Voltage, Current and Power write registers (addresses 0x1 – 0x6)

setpoints are controlled and encoded in either 32-bit floating point when

Command bit 7 is “1” or IQ15 fractional notation when Command bit 7 is

“0”. (IQ fractional notation of integer data: IQ15 means that the desired

real value is multiplied by 215, e.g., 0.5 = 16384 in IQ15).

HI REGISTER AND LO REGISTER

The voltage, current and power setpoints are 32-bit values and each uses
two registers: HI and LO, where the most significant 16-bits are written to
the HI register, and the least significant 16-bits are written to the LO
register.

Voltage setpoint is programmed by writing data to the Vsetpoint _HI/LO
(addresses 0x1 – 0x2) write registers. In IQ15 this value is normalized so
that 1.0 corresponds to a setpoint of full-scale voltage (60V / 40V). In
floating point no normalization is required when writing the desired voltage
value.

Current setpoint is programmed by writing data to the Isetpoint_HI/LO
write registers (addresses 0x3 – 0x4). In IQ this value normalized so 1.0
corresponds to the full-scale current of one module 167A / 250A. In
floating point no normalization is required when writing the desired current
value.

Power setpoint is programmed by writing data to the Psetpoint_HI/LO
write registers (addresses 0x5 – 0x6) will change the power setpoint. In IQ
this value is normalized so that 1.0 corresponds to the full scale power of

4-2 M551177-01 Rev A

Sorensen ASD Series Programming: Digital Interface Control

Bit

Function

ON

Enables the output of the unit. Only when the output of the unit is
enabled the power stages are active, otherwise they are totally off.

RESET FAULT

Clears all previous fault history when it is changed from a “0” to a “1”.

After the faults are reset, the bit value will automatically change to “0”.

REMOTE SNS
DISABLE

Disables remote sensing for the voltage loops, and also the monitors
related to remote sensing (such as load cable impedance monitor).

ANALOG
CURRENT

Defines analog inputs and outputs to Current or Voltage. When set to

“1”, defines all analog input and outputs to current mode (4-20mA). If it
equals “0”, the analog inputs and outputs are in voltage mode (0-10V).

IMPEDANCE
MONITOR

Enables/disables the impedance monitor feature. When set to “1”, it

enables the impedance monitor feature, which generates system faults
when the output impedance or load cable impedance do not meet
certain requirements. (Section 4.3.3)

MODBUS
TIMEOUT

Monitors MODBUS activity. When set to “1”, the master controller

monitors periodic Modbus activity, with a pre-defined maximum period
of inactivity. If there is no activity after that period, a fault is generated
to indicate a possible issue with the MODBUS interface or the

one module 10020W / 10000W. In floating point no normalization is
required when writing the desired power value.

4.2.2 READ ONLY REGISTERS

Read registers 0x0 and 0x3 - 0x8 are used to monitor the output and
status of the power supply.

READ OUTPUT REGISTERS

The voltage output is read using the Vout_HI/LO read registers (0x3 –
0x4) and the encoding is the same as the Vsetpoint_HI/LO write registers.

The current output of the power supply is read using the Ishunt_HI/LO
registers (0x5 – 0x6, same encoding as the Isetpoint HI/LO write
registers).

The power output is read using the Pout_HI/LO read registers (0x7 – 0x8,
same encoding as Psetpoint_HI/LO write registers).

READ STATUS REGISTER

Reading the Status read register (0x0) returns the status of the power
supply; it contains the output state, fault status and regulation mode of the
power supply.

4.2.3 COMMAND WRITE REGISTERS

The command register has 12 bits that work independently with different
functionality, described as follows (refer to Table 4-4):

M551177-01 Rev A 4-3

Programming: Digital Interface Control Sorensen ASD Series

Bit

Function

controller. (Section 4.3.5).

FLOATING POINT
ENABLED

Controls whether 32-bit numbers are floating point or integer. When

set to “1”, all 32-bit numbers are floating point numbers (IEEE single
precision standard). When set to “0”, all 32-bit numbers are integer

numbers with a scale given specified in the register list of this
document.

FDR ENABLED

Activates the flight data recorder option. When set to “1”, the master

controller and modules controllers periodically save certain information
to internal non-volatile memory for later diagnostics. (Section 4.3.6).

RESET ENERGY
METER

Causes the cumulative energy meter to restart at zero. When changed
from “0” to “1”, the energy meter accumulator is reset.

ANALOG
VOLTAGE
OVERRIDE

Only applicable in analog programming mode when unit is to be
operated in current and/or power mode only, use this bit to ignore

analog voltage programming input. When set to “1”, the analog voltage

programming input is ignored and the voltage setpoint is set to
maximum.

ANALOG
CURRENT
OVERRIDE

Only applicable in analog programming mode when unit is to be
operated in current and/or power mode only, use this bit to ignore

analog current programming input. When set to “1”, the analog current

programming input is ignored and the current setpoint is set to
maximum.

ANALOG POWER
OVERRIDE

Only applicable in analog programming mode when unit is to be
operated in current and/or voltage mode only, use this bit to ignore
analog power programming input. When set to “1”, the analog power
programming input is ignored and the power setpoint is set to
maximum.

DIGITAL
PROGRAMMING
MODE

Tells the unit to receive setpoints from the digital interface or from the

analog interface. When set to “1”, the unit will receive setpoints from

the digital interface (digital programming mode*). If set to “0”, the

setpoints are taken from analog interface (analog programming mode).
*In digital programming mode, the output enable signal at the analog
interface must be set to high in order for the unit to turn on without a
fault.

PROCESS
CONTROL MODE

Controls an external process. When set to “1”, the unit is set to control

an external process, using the power programming analog input as the
feedback. (Section 4.3.8).

DISABLE
ANALOG
SATURATION

Only applicable in analog programming mode, when set to “1” and any

of the 3 ANALOG OVERRIDE bits is used, the setpoint used for that
variable is not saturated to maximum; but is taken from the digital
interface setpoint (e.g. register).

4-4 M551177-01 Rev A

Sorensen ASD Series Programming: Digital Interface Control

4.3 ADVANCED DIGITAL CONTROL FEATURES

4.3.1 SETPOINTS

ASD power supplies series have 3 modes of operation: voltage, current
and power mode. There are 3 analog inputs called programming inputs
that define the setpoints when analog programming mode is used. There
are 3 registers that define the setpoints when digital programming is used
(see DIGITAL PROGRAMMING MODE bit in the command register).

In analog programming mode, the setpoint registers are automatically
updated with the values of the analog inputs. Writing to them has no
effect.

If a value beyond the limits is written to the setpoint registers, the actual
written value is saturated to the maximum limit. For example, is a 100V
setpoint is written to a 60V unit, the actual written value will be 60V.

4.3.2 REMOTE VOLTAGE SENSING

ASD units have both local and remote voltage sensing capabilities.
Remote sensing allows closing the voltage loop right at the load terminals,
compensating for load cable voltage drops. The maximum remote sensing
compensation is 50% of full scale voltage, giving up to 2% extra voltage
(on top of the nominal voltage rating) in case it is needed. Having local
and remote sensing allows also monitoring load cable voltage drop and
impedance, in order to detect load cable or connection issues.

Maximum accuracy of the voltage measurement is obtained by using
remote sensing.

4.3.3 LOAD IMPEDANCE MONITOR

The load impedance monitor feature performs a calculation in real time of
the load impedance, based on the output voltage and current

measurements. If the output impedance monitor is enabled (“IMPEDANCE
MONITOR” bit in the command register), the load impedance calculation is

continuously compared to programmable maximum and minimum values.
If the output impedance falls outside this window, a

“FAULT_OUTPUT_IMPEDANCE” fault will be generated, which can shut

down the unit if desired (see Programmable Fault Behavior).
ASD units also monitor how the load impedance changes with time, which

is called impedance “rate-of-change” (ROC). This is intended to show
sudden changes in impedance caused by failures, as opposed to the
typically slow changes in impedance caused by temperature changes of
the load. There is also a maximum limit and a minimum limit for this
variable, specified in percent of change per second. If the rate of change is
outside this window, the master controller will generate a fault.

M551177-01 Rev A 4-5

Programming: Digital Interface Control Sorensen ASD Series

4.3.4 DEFAULT REGISTER SAVING

By using the “Save_Defaults” register, all the contents of the Write

registers are saved to non-volatile memory. Every time the unit powers on,
these saved registers are loaded.

In case the original factory values are required, a different command code
can be used to recall them.

The command codes are the following:

 0x1234: stores current state as default.
 0x5678: restores saved default.
 0x9ABC: restores factory defaults.

After writing a command to the “Save_Defaults” register, this same

register should read 0x1111 to confirm that the previous command was
successfully executed.

4.3.5 MODBUS TIMEOUT

In order to prevent the unit from working in open loop in case of failure of
the process controller or analog/digital communications link, the ASD
master controller can monitor the Modbus activity.

If there is no activity for a given (programmable) time, the unit will
generate a fault and automatically shut down if desired.

To activate this feature, bit “MODBUS TIMEOUT” in the command register
has to be set to “1”. The timeout time is set by the

“Modbus_timeout_period” register.

4-6 M551177-01 Rev A

Sorensen ASD Series Programming: Digital Interface Control

Word size (bits)

Variable

16

header

24

date/time

16

command_register

8

status

8

existing_modules

32

fault_bits

32

supervisory_warning

32

supervisory_fault

32

Vsetpoint

32

Isetpoint

32

Vmonitor

32

Imonitor

32

Vsns_drop

32

Zout_ROC_max

32

energy_meter

32

modules_active

32

modules_warning

32

modules_fault

4.3.6 FLIGHT DATA RECORDER (FDR)

All ASD controllers (master controller and individual module controllers)
have a local non-volatile memory that allows the microprocessor to save
relevant operating variables after certain events and/or at a programmable
period controlled by the active master controller.

The data stored in the Flight Data Recorder (FDR) of the master
controller are shown in Table 4-1, the module data are shown in
Table 4-2.

Table 4-1. Master Controller FDR Data

M551177-01 Rev A 4-7

Programming: Digital Interface Control Sorensen ASD Series

Word size (bits)

Variable

16

header

24

date/time

16

time_increment

16

module_status

32

supervisory_warning

32

supervisory_fault

16

Vsetpoint

16

Isetpoint

16

Vout

16

Ishunt

16

Vout_max

16

Ishunt_max

16

Vdcbus

16

Vin_peak

16

controller

16

CT_LS

16

Vbias

16

Ibias

16

Tamb

16

Tshunt

16

Tmosfets

16

Tdiodes

16

Txfmr

16

Vhotwire

16

fan_speed

16

spare_time

Table 4-2. Module Controller FDR Data

4-8 M551177-01 Rev A

PERIODIC DATA RECORDING

A snapshot of the data is saved periodically at a period programmed by

the register “FDR_Period”, and also when a local warning or fault is

generated. The master controller has a real time clock (optional) that
keeps track of the date and time, so every entry is logged with this time

information. If the “FDR ENABLED” is set to “1”, the master controller

sends a periodic request to all to modules to save their local data to their
FDR memories. If any module has a local fault, it will immediately save it
to its local FDR with the last time information received from the master
plus a “time_increment”, specified in seconds.

Contact Customer Service for the necessary AMETEK software to
download the stored FDR information.

Sorensen ASD Series Programming: Digital Interface Control

Feedback

The feedback of the controlled variable comes from the external
process and is fed to the ASD controller by using one of the
analog inputs (the power programming input). With the right
transducer, any external variable can be controlled by the power
supply, such as temperature, pressure, current, voltage,
position, etc. The only requirement is that the transducer has to
produce an analog signal compatible with the analog inputs of
the ASD interface (0-10V or 4-20mA).

Setpoint

The setpoint of the process controller can be taken from the
digital interface (Psetpoint register) or from the analog interface
(Vprog input), depending on the configuration in the
“Process_config” register. See Table 4-7 for more details.

Compensator

The calculated error between the setpoint and the feedback
feeds a compensator, which is implemented as a discrete 2-pole
2-zero stage. The most common way to calculate these
coefficient is starting from a PID (proportional-integral­derivative) stage, and calculating the 2-pole 2-zero coefficients
based on it. The five coefficients (Process_coef_0 thru 4) can
be programmed by using write registers 51 to 60 (see Table
4-4). The compensator is executed by the master controller at a
sampling rate of 125Hz. The feedback and setpoint variables
have a range of 0 to 1.0.

Command

The compensator generates a command that can be configured
to control the output voltage or current of the power supply. This
is configured by a bit in the “Process_config” register. See Table
4-7 for more details.

4.3.7 PROGRAMMABLE FAULT BEHAVIOR

Fault behavior can be programmed to either report a specific fault and
shut down the power supply output, or report the fault and continue
running the power supply output. A 32-bit register called
“Fault_Shutdown_Config_HI/LO” defines this behavior. See Table 4-11 for
bit descriptions of the Fault Bits Register.

If a given bit is set to “1”, this means that the particular fault described in

the “Fault_Bits register bit description” will produce a unit shut down.

Some faults are not editable and will always produce a unit shut down
(writing zeros does not change their behavior), because they are related
to hard faults that may affect the integrity of the system.

4.3.8 EXTERNAL PROCESS CONTROL

ASD power supplies have the capability of controlling external variables,
such as temperature or pressure, by using an internal PID compensator
and an analog input for the feedback. Figure 4-1 shows a block diagram of
an ASD unit controlling an external process. The main parts are:

M551177-01 Rev A 4-9

Programming: Digital Interface Control Sorensen ASD Series

Process Limit
(only in analog
programming
mode)

If desired, the maximum output (current or voltage) generated
by the process control loop can be limited by an analog input

(Iprog input). This is configured by a bit in the “Process_config”

register. See Table 4-7 for more details. If the unit is in digital
programming mode, the maximum voltage and current outputs
are controlled by the Vsetpoint and Isetpoint registers.

Figure 4-1. Block Diagram, External Process Control Feature

4.3.9 PROGRAMMABLE FULL-SCALE SETTING

There are two registers called “Ilimit” and “Vlimit” to artificially define the

“full-scale” range and scale of the power supply setpoints. These registers

can be programmed with values lower or higher than the actual power
supply full-scale current and voltage. The registers have two effects:

 Analog ports scale (programming inputs and monitor outputs): 0 to

10V (or 4 to 20mA) represents to 0 to Ilimit (or 0 to Vlimit) instead
of 0 to full-scale values.

 Saturation limit of digital programming: the master controller will

saturate the programmed setpoints to the values in Ilimit and

Vlimit.
If this feature is not used (default), a value of 0 has to be programmed.
For example, a 60V power supply can have Vlimit = 50V and 0-10V means

0-50V output. If Vlimit is higher than 60V, the power supply will generate a
COMMAND_ERROR fault (see Table 14) if it is actually programmed with
a value higher than 60V.

4.3.10 QUERYING MODULE INFORMATION

Certain module information can be accessed through the master controller
digital interface by using the module query register.

The write register “Query_Module” has to be written with the module

4-10 M551177-01 Rev A

address number in the most significant 8 bits, and with a command
number in the least significant 8 bits. Table 6 shows the possible data that

Sorensen ASD Series Programming: Digital Interface Control

Command number

Module data

0

Module ID

1

Firmware version

2

Serial number

3

Module status

4

Supervisory fault

5

Supervisory warning

can be accessed by using different command numbers. After the

“Query_Module” register is written with the 2 number, the master controller

will communicate with the module to obtain the data and will make it
available at the read register “Module_Query_Info_HI/LO”.

Read registers at addresses 100 to 131 have the discovered module bus
addresses required to query the module, they are sorted from lower
address to higher.

To summarize, the sequence to read module information is:

1. Find the module bus address in registers 100 to 131.

2. Write the “Query_Module” register with the module address and the desired
command number.

3. After a few milliseconds, read the data from the “Module_Query_Info_HI/LO”
register.

Table 4-3. Module Data Query Commands

4.3.11 PROGRAMMABLE SLEW-RATE LIMIT

The slew-rate of the output voltage and/or current can be controlled when
the setpoints change. There are two 32bit registers,

“Vsetpoint_SRL_HI/LO” and “Isetpoint_SRL_HI/LO”, that limit in V/ms and

A/ms the speed of change of the voltage and current setpoints. If sudden
changes in the setpoints are applied through analog or digital interface,
the master controller limits the slew-rate to the programmed limits.

4.3.12 PROGRAMMABLE LOW-PASS-FILTERS

The master controller applies a low pass filter (LPF) to the monitor signals
before making them available at the analog port and the read registers.
This LPF can be programmed to respond slower in case the load is not
constant and the average variables want to be monitored.

The digital low pass filters implemented in the master controller are single­pole, and can be programmed with the alpha () coefficient, given by:

 = 1/(fc*2)/(1/(fc*2)+1/fs)

M551177-01 Rev A 4-11

Where fc is the desired cut off frequency, and fs is the sampling rate of the
digital filter, which is 125Hz for the master controller.

Programming: Digital Interface Control Sorensen ASD Series

The two low pass filters that can be programmed in the ASD unit are
monitor signals and impedance calculation.

 Monitor signals (“monitor_alpha_HI/LO” register) is used for

Vmonitor, Imonitor and Pmonitor.

 Impedance calculation (“Z_alpha_HI/LO” register) is used for

output impedance calculations.

4.3.13 EXPECTED NUMBER OF MODULES FEATURE

When this feature is enabled (switch #8 UP or from the digital interface)
the master will expect to discover a predefined number of modules. If the
number of modules is lower than the expected, the unit will generate a
fault indicating that there may be a problem with one or more modules.
This feature also fixes the analog interface scale based on the expected
number of modules, making it independent from the actual number of
modules that were discovered.

For example, if in a 60V unit the predefined number of modules is 6
(switches 6 and 4 UP), the total available output current with 6 modules
would be 1000A, so the analog interface full scale (10V or 20mA) would
be 1000A regardless of the actual number of connected modules. If there
are 3 discovered modules because the 2nd chassis was not powered-up,
the analog interface scale will be fixed based on the EXPECTED number
of modules, and the master will generate a fault because there were too
few discovered modules.

If this feature is not used, the actual number of modules discovered by the
master will define the analog interface scale. For example, three 60 V
modules give 500 A full scale, or six 60 V modules give 1000 A.

4.4 LIST OF REGISTERS

This section presents the following tables of registers:

 Write Registers, Table 4-4
 Command Register Bits, Table 4-5
 FDR_Period Register Bits, Table 4-6
 Process_Config Register Bits, Table 4-7
 EtherCAT_Config Register Bit, Table 4-8
 Read Registers, Table 4-9
 Status Register Bits, Table 4-10
 Fault_Bits Register, Table 4-11
 Module_Information Register Bits, Table 4-12

4-12 M551177-01 Rev A

Sorensen ASD Series Programming: Digital Interface Control

Address

Name

IQ

Content

Notes

0

Command

binary

See Command description below.

1, 2

Vsetpoint_HI/LO

IQ15 / FP

Output voltage setpoint. 1.0 = nominal voltage (60V / 40V).

2, 3

3, 4

Isetpoint_HI/LO

IQ15 / FP

Output current setpoint. 1.0 = nominal current of one module (167A / 250A).

2, 3

5, 6

Psetpoint_HI/LO

IQ15 / FP

Output power (or process) setpoint. 1.0 = nominal power of one module (10020W / 10000W).

2, 3

7, 8

Module_Vout_peak_HI/LO

IQ15 / FP

Overvoltage protection threshold. 1.0 = nominal voltage (60V / 40V).

2. 3

9, 10

Zoutput_ Max_HI/LO

IQ24 / FP

Output impedance max limit. 1.0 = (nominal voltage / nominal current) of one module (0.3593 / 0.1600).

2, 3

11, 12

Zoutput_ Min_HI/LO

IQ24/ FP

Output impedance min limit. 1.0 = (nominal voltage / nominal current) of one module (0.3593 / 0.1600).

2, 3

13, 14

Zoutput_ ROC_Pos_HI/LO

IQ20 / FP

Output impedance rate-of-chance max limit. Percent of change per second.

2, 3

15, 16

Zoutput_ ROC_Neg_HI/LO

IQ20 / FP

Output impedance rate-of-chance min limit. Percent of change per second.

2, 3

17, 18

Fault_Shutdown_Config_HI/LO

binary

All bits that are “1” will cause the corresponding fault bit to generate a shutdown the unit.

3, 4

19, 20

Zcable_Max_HI/LO

IQ24 / FP

Cable impedance max limit. 1.0 = (nominal voltage / nominal current) of one module (0.3593 / 0.1600).

2, 3

21, 22

Vdrop_Cable_Max_HI/LO

IQ15 / FP

Cable voltage drop max limit. 1.0 = nominal voltage (60V / 40V).

2, 3

23, 24

Zmonitor_Imin_HI/LO

IQ15 / FP

Impedance monitor minimum required current. 1.0 = (nominal voltage / nominal current) of one module

(0.3593 / 0.1600).

3

25, 26

Zalpha_HI/LO

IQ24 / FP

Alpha coefficient of the low pass filter for all impedance calculations. Normalized (0 to 0.9999).

3

27

Save_Defaults

binary

0x1234 stores current state as default, 0x5678 restores saved default, 0x9ABC restores factory defaults.

28

Query_Module

binary

Used to query module data, in combination with Read registers 29, 30 (Query_Module_Info).

29

Expected_Modules

Int16

If non-zero a fault will be generated when existing modules does not match this value. See user guide for

more details.

30

FDR_Period

Int16

See FDR_Period description below for more information.

31, 32

Vsetpoint_SRL_HI/LO

IQ15 / FP

Voltage setpoint slew-rate-limit. 1.0 = nominal voltage (60V / 40V) per ms voltage setpoint rate-of-change

limit.

2, 3

33, 34

Isetpoint_SRL_HI/LO

IQ15 / FP

Current setpoint slew-rate-limit. 1.0 = nominal current of one module (167A / 250A) per ms current setpoint

rate-of-change limit.

2, 3

35, 36

monitor_alpha_HI/LO

IQ24 / FP

Alpha coefficient of the low pass filter for the monitor readbacks. Normalized (0 to 0.9999).

2, 3

37, 37

max_delta_setpoint_HI/LO

IQ15 / FP

Used for impedance calculation. If setpoints change more than this value the impedance measurement is

considered not valid. Percent per ms.

2, 3

39

Z_delay

Int16

Used for impedance calculation. Time delay after the impedance calculation is considered valid again. 1 is

equivalent to 8 ms of delay

40

Modbus_timeout_period

Int16

Used with Modbus timeout feature. 1 is equivalent to 8 ms of delay

41, 42

activation_code_HI/LO

Int32

Code to unlock the digital interface. A value of all ones ( 4294967295) will lock it. The correct unlock code

is based on an encryption algorithm and the Master Controller serial number.

3

Table 4-4. Write Registers

M551177-01 Rev A 4-13

Programming: Digital Interface Control Sorensen ASD Series

Address

Name

IQ

Description

Notes

43, 44

Vlimit_HI/LO

IQ15 / FP

Artificial limit of voltage setpoint. Changing this value will change the scaling of the analog inputs and

outputs. 1.0 = nominal voltage (60V / 40V).

45, 46

Ilimit_HI/LO

IQ15 / FP

Artificial limit of current setpoint. Changing this value will change the scaling of the analog inputs and

outputs. 1.0 = nominal current of one module (167A / 250A).

47

Time_hi

Int16

Real time clock time in BCD

48

Time_md

Int16

Real time clock time in BCD

49

Time_lo

Int16

Real time clock time in BCD

3

50

Process_config

binary

Used to configure process control feature

51, 52

Process_coef_0

FP

Coefficient B2 of 2P/2Z compensator for process control

53, 54

Process_coef_1

FP

Coefficient B1 of 2P/2Z compensator for process control

55, 56

Process_coef_2

FP

Coefficient B0 of 2P/2Z compensator for process control

3

57, 58

Process_coef_3

FP

Coefficient A2 of 2P/2Z compensator for process control

59, 60

Process_coef_4

FP

Coefficient A1 of 2P/2Z compensator for process control

61

Ethercat_config

binary

Used to configure EtherCAT interface (disable)

Notes:

1. All the registers have integer data. IQ means fractional notation:

o IQ15 means that the desired real value has to be multiplied by 215, for example 0.5 equals to 16384 in IQ15.
o IQ10 means that the desired real value has to be multiplied by 210.

2. 32-bit registers are composed of two 16-bit registers, HI (16 MSB) and LO (16 LSB)

3. See Fault_Bits for the bit codes and descriptions.
For a 3-module unit, the maximum voltage is 1.0, the maximum current is 3.0 and the maximum power is 3.0.

4-14 M551177-01 Rev A

Sorensen ASD Series Programming: Digital Interface Control

Bit

Field

Value

Description

1

ON

0 1 Turns off the unit.

Turns on the unit.

2

RESET_FAULT

0 1 No action.

Resets any faults.

3

REMOTE_SNS_DISABLE

0 1 Enables remote voltage sensing.

Disables remote voltage sensing.

4

ANALOG_CURRENT

0 1 Analog voltage programming mode.

Analog current programming mode.

5

IMPEDANCE_MONITOR

0 1 Disables output impedance monitoring.

Enables output impedance monitoring.

6

MODBUS_TIMEOUT

0 1 Disables monitoring of Modbus activity.

Enables monitoring of Modbus activity.

7

FOATING_POINT_ENABLED

0 1 Fractional register values use 32-bit IQ fractional encoding.

Fractional register values use 32-bit floating point encoding.

8

FDR_ENABLED

0 1 Flight Data Recorder periodic update disabled.

Flight Data Recorder periodic update enabled.

9

RESET_ENERGY_METER

0 1 No action.

Resets the energy meter to zero.

10

ANALOG_VOLTAGE_OVERRIDE

0 1 Analog Interface voltage set via external current or voltage signal.

Analog Interface voltage input disabled.

11

ANALOG_CURRENT_OVERRIDE

0 1 Analog Interface current set via external current or voltage signal.

Analog interface voltage input disabled.

12

ANALOG_POWER_OVERRIDE

0 1 Analog Interface power set via external current or voltage signal.

Analog Interface power input disabled.

13

DIGITAL PROGRAMMING MODE

0 1 Setpoints are taken from analog programming inputs.

Setpoints are taken from digital interface.

14

PROCESS CONTROL MODE

0 1 Standard modes: voltage/current/power.

Process control is active, modes: voltage/current/process.

15

DISABLE ANALOG SATURATION

0 1 Disabled analog inputs (bits 10, 11, 12) saturate to max setpoint.

Disabled analog inputs take setpoint from digital programming.

16

Not used

Table 4-5. Command Register Bits

M551177-01 Rev A 4-15

Programming: Digital Interface Control Sorensen ASD Series

Bit

Field

Description

1-12

FDR_Update_Period

Integer number of seconds between FDR periodic updates when the unit’s output is enabled.

13 - 16

FDR_Decimation

Module Vin scope capture decimation (scope frequency = 100,000 Hz / 2 ^ FDR_Decimation).

Bit

Field

Description

1

Setpoint_Select

Process loop setpoint source: digital setpoint=1, analog setpoint=0

2

Output_Select

Process output command parameter: voltage=1, current=0

3

Limit_Active

If equal to “1”, the process limit signal using analog_Isetpoint is active

Bit

Field

Description

1

EtherCAT_Write_Disable

If equal to “1”, the controller ignores any EtherCAT modification to write registers

Table 4-6. FDR_Period Register Bits

Table 4-7. Process_Config Register Bits

Table 4-8. EtherCAT_Config Register Bit

4-16 M551177-01 Rev A

Sorensen ASD Series Programming: Digital Interface Control

Address

Name

IQ

Description

Notes

0

Status

n/a

Describes the status of the unit (output enabled, faults, mode, etc). See register description below

1, 2

Fault_Bits_HI/LO

binary

Ssytem fault bits, each bit of the number means a different fault. See fault bits description.

3

3, 4

Vmonitor_HI/LO

IQ15 / FP

Output voltage monitor. 1.0 = nominal current of one module (167A / 250A)

1, 2

5, 6

Imonitor_HI/LO

IQ15 / FP

Output current monitor. 1.0 = nominal voltage (60V / 40V)

1

7, 8

Pmonitor_HI/LO

IQ15 / FP

Output power/process monitor. 1.0 = nominal power of one module (10020W / 10000W)

1, 2

9

Existing_Modules_Qty

Int16

Number of modules that are recognized by the unit. Depends on the number of modules that were

discovered by the master controller.

10

Active_Modules_Qty

Int16

Number of modules recognized by the master as active (functional).

11, 12

Modules_Active_HI/LO

binary

Bits in “1” indicate that the corresponding modules are active

2

13, 14

Modules_Fault_HI/LO

binary

Bits in “1” indicate that the corresponding modules have faults

2

15, 16

Modules_Warning_HI/LO

binary

Bits in “1” indicate that the corresponding modules have warnings

2

17, 18

Zoutput_HI/LO

IQ24 / FP

Load impedance monitor. 1.0 = (nominal voltage / nominal current) of one module (0.3593 / 0.1600)

1, 2

19, 20

Zoutput_ROC_HI/LO

IQ20 / FP

Load impedance rate-of-change monitor. Percent change per second.

1, 2

21, 22

Master_ID_HI/LO

binary

Hardware configuration of the master controller, used to identify the unit type.

2

23, 24

Serial_Number_HI/LO

Int32

Serial number of the master controller.

2

25, 26

ZCable_HI/LO

IQ15 / FP

Load cable impedance monitor. Only valid if remote sensing is enabled. 1.0 = (nominal voltage / nominal

current) of one module (0.3593 / 0.1600)

1, 2

27, 28

VDrop_Cable_HI/LO

IQ15 / FP

Load cable voltage drop monitor. Only valid if remote sensing is enabled. 1.0 = nominal voltage (60V /

40V)

1, 2

29, 30

Module_Query_Info_HI/LO

binary

Used to read module data, in combination with Write register 28 (Query_Module).

2

31, 32

Energy_Meter_HI/LO

Int32

Cumulative counter of energy supplied by the unit (1 = kW • s).

2, 5

33

Firmware_Version

binary

Indicates the current firmware version of the master controller.

34

Modbus_status

binary

Indicates the status history of the Modbus communication. Used for debugging Modbus communication.

35, 36

Unit_Serial_Number_HI/LO

Int32

Serial number of the unit.

37, 38

Master_Supervisory_Faults_HI/LO

binary

Master controller supervisory fault bits, each bit of the number means a different fault. See fault bits

description.

39, 40

Master_Supervisory_Warnings_HI/LO

binary

Master controller supervisory warning bits, each bit of the number means a different warning. See fault

bits description.

100 - 131

Module_Info

binary

Used to obtain information on connected modules, see register description below.

4

500 - 510

Unit_PN

char

Stores a string with the part number of the unit.

Table 4-9. Read Registers

M551177-01 Rev A 4-17

Programming: Digital Interface Control Sorensen ASD Series

Notes:

4. All the registers have integer data. IQ means fractional notation:

o IQ15 means that the desired real value has to be multiplied by 215, for example 0.5 equals to 16384 in IQ15.
o IQ10 means that the desired real value has to be multiplied by 210.

5. 32-bit registers are composed of two 16-bit registers, HI (16 MSB) and LO (16 LSB)

6. See Fault_Bits for the bit codes and descriptions.

7. See Module_Information for description of the bits used.

8. Energy meter can be reset using Command register bit 9.

4-18 M551177-01 Rev A

Sorensen ASD Series Programming: Digital Interface Control

Bit

Field

Value

Description

1

STATUS_BIT_ON

0
1

The unit is off.
The unit is on.

2

STATUS_BIT_FAULT

0
1

No faults.
There is a fault.

3

STATUS_BIT_ANALOG_PROG

0
1

The unit is not enabled through analog programming.
The unit is enabled through analog programming.

4

STATUS_BIT_MODBUS_PROG

0
1

The unit is not enabled through Modbus programming.
The unit is enabled through Modbus programming.

5

STATUS_BIT_IMODE

0
1

The unit is not in current mode.
The unit is in current mode.

6

STATUS_BIT_VMODE

0
1

The unit is not in current mode.
The unit is in voltage mode.

7-16

Not used

Code

Name

Description

0x1

FAULT_MODULE_FAULT

One or more modules have reported a fault.

0x2

FAULT_OUTPUT_IMPEDANCE

The output impedance has exceeded the maximum or is below of
minimum limit.

0x4

FAULT_COMMAND_ERROR

The unit reports that it cannot accomplish with the programmed current,
voltage and power.

0x8

FAULT_MASTER_HARD_FAULT

The master board has detected a hardware fault.

0x10

FAULT_MASTER_SUPERVISORY

The master board has detected a fault in the variables of supervision.

0x20

FAULT_ANALOG_PSETPOINT

When using 4-20mA analog programming, this signal indicates that the
input current is below 2mA. This may indicate an external problem with
the 4-20mA loop.

0x40

FAULT_ANALOG_ISETPOINT

0x80

FAULT_ANALOG_VSETPOINT

0x100

FAULT_REMOTE_SNS_ERROR

There is too much measurement error in remote sensor. This may
indicate an external problem with the remote sensing cable.

0x200

FAULT_MODBUS_TIMEOUT

No Modbus communication activity has been detected. This may
indicate an external problem with the master Modbus device.

0x400

FAULT_MASTER_WARNING

The master board has detected a warning in the variables of
supervision.

0x800

FAULT_NO_RESPONSE_MODULE

One or more modules did not respond to the internal communication.

0x1000

FAULT_REPEATED_MODULE_ID

The master has more than one module connected with the same ID
value.

0x2000

FAULT_TOO_MANY_MODULES

The master is connected to more than the maximum of 32 modules.
This may indicate that too many power supplies are connected in
parallel.

Table 4-10. Status Register Bits

Notes:

1. If both voltage and current mode signals are “1” this indicates that the unit is in power/process mode.

2. The fault bit will stay high until the Command register COMMAND_BIT_RESET_FAULT bit is set to “1”.

3. In case of a fault, the Fault_Bits will show the reason of the fault with an error code. Each fault is indicated by one bit so that
multiple faults can be indicated simultaneously. Use the Fault_Bits descriptions below to decode which fault(s) are being
annunciated.

Table 4-11. Fault_Bits Register

M551177-01 Rev A 4-19

Programming: Digital Interface Control Sorensen ASD Series

Code

Name

Description

0x4000

FAULT_REPEATED_MODULE_SERIA
L

The master has more than one module ID with the same serial number.

0x8000

FAULT_OUTPUT_IMPEDANCE_ROC

The output impedance rate of change has exceeded the maximum limit.

0x10000

FAULT_LOAD_CABLE_IMPEDANCE

The load cable impedance has exceeded the maximum limit.

0x20000

FAULT_TOO_FEW_MODULES

The master is connected to less than the expected number of modules.
See user guide for more details.

0x40000

FAULT_MISSING_PHASE

There is a phase missing from the AC input to the unit.

0x80000

FAULT_ANALOG_SHUTDOWN

Output enable pin at the analog port is not enabled and the unit was
enabled through digital interface.

0x100000

FAULT_ANALOG_PRG_IN_OVERLOA
D

One of the analog programming inputs was overloaded with too high
current or voltage.

Bit

Field

Description

1 - 12

MODULE_BUS_ADDRESS

Contains the unique module bus address used for communications with

that module

13 - 16

Not used

Table 4-12. Module_Information Register Bits

4.5 MODBUS COMMUNICATIONS

The Modbus protocol specification can be downloaded from
www.modbus.org. The following is a brief description of Modbus protocol
taken from the same website:

“Modbus is an application-layer messaging protocol, positioned at level 7
of the OSI model. It provides client/server communication between
devices connected on different types of buses or networks.

The de facto industrial serial standard since 1979, Modbus continues to
enable millions of automation devices to communicate. Today, support for
the simple and elegant structure of Modbus continues to grow. The
Internet community can access Modbus at a reserved system port 502 on
the TCP/IP stack.

Modbus is a request/reply protocol and offers services specified by
function codes. Modbus function codes are elements of Modbus
request/reply PDUs. This protocol specification document describes the
function codes used within the framework of Modbus transactions.”

4-20 M551177-01 Rev A

Sorensen ASD Series Programming: Digital Interface Control

Pin

Signal

1-3

n/u 4 RS485_B

5

RS485_A

6

n/u 7 24V

8

Ground

Shield

Chassis Ground

4.5.1 ETHERNET – MODBUS-TCP

The Ethernet port is configurable for either Modbus TCP (default) or
Modbus RTU which is transmitted and received using an internal
Lantronix XPort-04 Ethernet TCP/IP server. For more details on the
XPort-04 see the XPort User Guide at the manufacturer’s website.

The Ethernet digital interface is shipped DHCP-enabled using port 502 for
Modbus communications. There is a label on the back of each unit with
the XPort MAC Address for acquiring the IP Address of the unit.
Information for reconfiguring the XPort-04 Ethernet settings can be found

in the XPort User Guide found at the above link to the manufacturer’s

website. Do not modify the XPort-04 serial settings because this may
cause an internal loss of digital communications.

4.5.2 SERIAL – MODBUS-RTU

The serial interface uses RS-485 half-duplex serial communications with
the following configuration for carrying the Modbus RTU data:

 Baud rate: 230,400 bps
 Flow control: none
 Data bits: 8
 Parity: none
 Stop bits: 2

The RJ-45 connector for the Serial Interface uses the Modbus Interface
standard pin-out (www.modbus.org). This is shown in Table 4-13

Table 4-13. Pin-out of the RJ45 Serial Port

M551177-01 Rev A 4-21

Programming: Digital Interface Control Sorensen ASD Series

4.5.3 ETHERNET/IP INTERFACE

EtherNet/IP (Ethernet Industrial Protocol) is a communications protocol
developed by Rockwell Automation, managed by the Open DeviceNet
Vendors Association (ODVA) and designed for use in process control and
other industrial automation applications.

ASD power supplies internally use an Ethernet/IP device called NET485­EIP-MB. This device converts Ethernet/IP protocol to Modbus protocol,
which is described in previous sections of this manual.

The interface expects a BOOTP server to get the IP address at power up,
but a fixed IP address can be configured remotely by using a software
capable of sending Ethernet/IP explicit packets, such as EIP Scan Test
Tool, from Pyramid Solutions.

For real time control of the power supply, the Ethernet/IP interface has an
input assembly object (class 0x04, instance 0x65) and an output
assembly object (class 0x04, instance 0x66), with similar functionality to
the Mosbus registers.

INPUT

The input (Target to Originator) assembly object has the following read
registers:

 Input assembly status word (16bit), not used.
 Status (16bit)
 Fault bits (32bit)
 Voltage monitor (32bit)
 Current monitor (32bit)
 Power/Process monitor (32bit)
 Existing modules (16bit)
 Active modules (16bit)

Total of 24 bytes.

OUTPUT

The output (Originator to Target) assembly object has the first 4 write
registers:

 Output assembly configuration word (16bit), includes the Run/Idle bit.
 Command (16bit)
 Voltage setpoint (32bit)
 Current setpoint (32bit)
 Power/Process setpoint (32bit)

Total of 16bytes.

4-22 M551177-01 Rev A

Sorensen ASD Series Programming: Digital Interface Control

Write Registers

Read Registers

Command
Vsetpoint
Isetpoint
Psetpoint

Status
Fault_Bits
Vmonitor
Imonitor
Pmonitor
Existing_Modules
Active_Modules
Module_Status
Module_Faults
Module_Warnings
Z_Output
Z_Cable
Vdrop_Cable
Energy_Meter

For more information about the configuration of the Ethernet/IP interface,
please refer to the NET485-EIP-MB user manual at Gridconnect website.

4.5.4 ETHERCAT INTERFACE

EtherCAT (Ethernet for Control Automation Technology) is an open high
performance Ethernet-based fieldbus system. The development goal of
EtherCAT was to apply Ethernet to automation applications which require
short data update times (also called cycle times) with low communication
jitter (for synchronization purposes) and low hardware costs.

ASD power supplies have an optional EtherCAT interface that allows
accessing most of the read and writing registers. The registers that are
available are the following:

These write and read registers are linked to EtherCAT PDOs (Process
Data Objects), which allow real time control of the power supply.
Available PDOs are shown in Table 4-14

Table 4-14. Registers Available at the EtherCAT Interface

In units with an EtherCAT interface, an auxiliary Modbus-RTU (over RS-

485) interface is available at the DB9 port, which supports the full
functionality and features are available at the other Modbus interfaces.
This auxiliary interface can be used together with EtherCAT for non “real­time control” tasks, such as configuration, register saving, module query
and firmware update. If both interfaces are used at the same time, the
EtherCAT interface has more priority to write registers.

M551177-01 Rev A 4-23

Programming: Digital Interface Control Sorensen ASD Series

Bit

Value

Description

ON 1 To enable output.

FLOATING_POINT_ENABLED

1

Because the variable type of the
PDOs is set to floating point
numbers.

DIGITAL PROGRAMMING
MODE

1

To enable digital programming.

In case the power supply will be controlled over serial Modbus interface
(with EtherCAT interface only for monitoring), the write register

“Ethercat_config” allows to disable the write actions coming from

EtherCAT. See Table 4-8.
Table 4-15 shows the command registers that must be set in order to

operate the power supply from EtherCAT.

Table 4-15. Commands Bits Required for EtherCAT Operation

EtherCAT Process Data Objects (PDOs) and variables are presented in
Table 4-16. The variables in red (accompanied by down arrow) are Write
Only. The variables in yellow (accompanied by up arrow) are Read only.

4-24 M551177-01 Rev A

Sorensen ASD Series Programming: Digital Interface Control

EtherCAT PDO Tree

EtherCat PDO variables

Table 4-16. EtherCAT PDOs and Variables

M551177-01 Rev A 4-25

Programming: Digital Interface Control Sorensen ASD Series

Code

Name

Description

0x1

SUPERVISORY_I_BIAS

Internal circuits OCP

0x10

SUPERVISORY_CAN

Issue with internal/external communication bus

0x80

SUPERVISORY_LIN

Issue with internal communication bus

0x100

SUPERVISORY_MODBUS_BUFFER_FULL

The received Modbus packet is too big

0x200

SUPERVISORY_MODBUS_ERROR

Issue with Modbus communication, usually because
got to many packets

0x400

SUPERVISORY_SPI_ADC_BUSY

Communication issue with analog interface ADC.

0x800

SUPERVISORY_ADC_CONFIGURATION

Analog interface ADC was not properly configured.

0x1000

SUPERVISORY_MB_MODULE_QUERY_ERROR

Issue with the module query Modbus command.

0x2000

SUPERVISORY_FAULT_WATCHDOG

Microprocessor watchdog.

0x4000

SUPERVISORY_FLASH_WRITE_ERROR

There was an error writing internal Flash memory.

0x8000

SUPERVISORY_COMMAND_ERROR

not used

0x10000

SUPERVISORY_FW_UPDATE_NOT_COMPLETE

The firmware update process was not successfully
completed.

0x20000

SUPERVISORY_MASTER_NOT_CALIBRATED

The controller was not calibrated or does not have the
calibration coefficients loaded. It will use default values.

0x40000

SUPERVISORY_FLASH_CSM

Problem writing Flash memory because it is locked.

0x80000

SUPERVISORY_REDUNDANT_OUTPUT_ON

One of the redundant output enable circuits may have
a failure.

0x100000

SUPERVISORY_INCORRECT_HARDWARE_VERSION

The hardware version configured in the firmware is not
correct.

0x200000

SUPERVISORY_SPI_ADC_TIMEOUT

The external ADC for the analog interface has not
responded.

0x400000

SUPERVISORY_V_BIAS_5V

The 5V internal supply does not meet the
requirements.

0x800000

SUPERVISORY_V_BIAS_24V

The 24V internal supply does not meet the
requirements.

0x1000000

SUPERVISORY_SWITCH_READ_PROBLEM

the controller reading of the configuration switches is
not reliable

0x2000000

SUPERVISORY_ETHERCAT_FAILED_INIT

Only EtherCAT board

0x4000000

SUPERVISORY_WRONG_MASTER_ID

The master ID that was assigned is not compatible with
that firmware or hardware

4.5.5 SUPERVISORY FAULT CODES

Table 4-17 presents the supervisory fault codes for the Master controller,
and Table 4-18 presents the supervisory fault codes the Modules.

Table 4-17. Master Supervisory Fault Codes

4-26 M551177-01 Rev A

Sorensen ASD Series Programming: Digital Interface Control

Code

Name

Description

0x1

SUPERVISORY_THERMISTOR1

MOSFETs OTP

0x2

SUPERVISORY_THERMISTOR2

output diodes OTP

0x4

SUPERVISORY_HOTWIRE

internal airflow sensing detected low or too hot airflow

0x8

SUPERVISORY_FAN_SPEED

fan speed is below the minimum limit

0x10

SUPERVISORY_CAN

issue with internal/external communication bus

0x20

SUPERVISORY_TSHUNT

output shunt OTP

0x40

SUPERVISORY_AMBIENT

internal ambient OTP

0x80

SUPERVISORY_TDSP

microprocessor internal OTP

0x100

SUPERVISORY_ISHUNT_PEAK

output current OCP

0x200

SUPERVISORY_NO_MASTER

lost communication with master, didn't get any packet from the
master for a certain time

0x400

SUPERVISORY_LOW_VDC

input DC bus UVP, went below the absolute minimum

0x800

SUPERVISORY_COMMAND_ERROR

module could not achieve any of the requested setpoints

0x1000

SUPERVISORY_WRONG_LIN_ID

issue with the internal jumper that sets the module address

0x2000

SUPERVISORY_HW_OTP

redundant hardware OTP (MOSFETs or diodes)

0x4000

SUPERVISORY_LOW_LINE

input DC bus UVP, went to a value below the minimum, faults
after a certain time

0x8000

SUPERVISORY_VLINE_PEAK

input voltage high speed peak detection

0x10000

SUPERVISORY_VLINE_HIGH

input voltage high line detection

0x20000

SUPERVISORY_CT_PEAK

power converter primary circuit OCP

0x40000

SUPERVISORY_BIAS_PEAK

internal circuits OCP

0x80000

SUPERVISORY_HW_OCP_PEAK

output current redundant hardware OCP

0x100000

SUPERVISORY_OVP

output OVP

0x200000

SUPERVISORY_LIN

internal communication bus issue

0x400000

SUPERVISORY_DISCOVERY_ERROR

the module was not discovered

0x800000

SUPERVISORY_AC_FAULT_FROM_MASTER

AC input missing phase or low line fault

0x1000000

SUPERVISORY_WRONG_SERIAL_NUMBER

the module serial number of the module does not match the
backup one

0x2000000

SUPERVISORY_BIAS_FAULT

local bias UVP

0x4000000

SUPERVISORY_FAULT_WATCHDOG

microprocessor watchdog

Table 4-18. Module Supervisory Fault Codes

M551177-01 Rev A 4-27

Programming: Digital Interface Control Sorensen ASD Series

Connection Status

Connect

/

Disconnect Button

4.6 MODBUS CONTROL USER INTERFACE

The Sorensen ASD Water Cooled power supply supports Modbus
communications through Ethernet or Serial communications depending
on the power supply model. Presented here is a description of the control
interface, beginning with quick-reference instructions for starting and
ending communications with the power supply, then proceeding with a
description of the menus and pages of the ASD MODBUS Control
Interface.

4.6.1 MAKING A CONNECTION

1. At the bottom right in the Control interface window use the
Interface dropdown button to select the mode of Modbus
communication: Ethernet (default) or Serial.

4-28 M551177-01 Rev A

Sorensen ASD Series Programming: Digital Interface Control

Temperature

Coefficients Window

Ethernet Settings

Window

Serial Settings

Window

2. Click the Settings drop-down menu in the upper left of the control
interface window, and select the mode of MODBUS
communication to be configured, either Ethernet Settings (the
Ethernet Settings window appears; go to Step 3) or Serial Settings
(the Serial Port Properties window appears; skip to Step 4).

M551177-01 Rev A 4-29

Programming: Digital Interface Control Sorensen ASD Series

To configure the Ethernet settings:

3. Edit the available fields described as follows:

 IP Address: Input the IP Address of the power supply.
 Port: Should always be set to 502, which is the standard port

for Modbus communications.

 Slave Address: Either leave the value at 0 for an automated

search by the application to find the slave address used by the
power supply, or use the dropdown arrow to set a specific
Modbus slave address for communication with the power
supply.

a. Either:

Click Ok to accept the settings and return to the previous window
or
Click Cancel to return to the previous page without implementing any
changes to the settings

b. Skip to Step 5.

4-30 M551177-01 Rev A

Sorensen ASD Series Programming: Digital Interface Control

Port:

Specify the computer COM port to make the
serial socket connection.

Baud Rate:

Should always be set to 230400 bits / sec for
Modbus serial communications with the power
supply.

Data Bits:

Should always be set to 8 bits for Modbus
serial communications with the power supply.

Parity:

Should always be set to None for Modbus
serial communications with the power supply.

Stop Bits:

Should always be set to 1 for serial
communications with the power supply.

Flow Control:

Should always be set to None for serial
communications with the power supply.

Modbus Slave
Address:

Specify the Modbus slave address used by the
power supply.

Note: Because several power supplies can be
connected to one serial Modbus connection the
slave address must match that of the power supply.

4. To configure the Serial Port Properties:

a. Select the appropriate choices from the drop-down buttons, described as

follows:

b. Choose to click any of the three buttons at the bottom as follows:

 Click Restore Defaults to return the serial port properties to their

default settings.

 Click Ok to accept the settings shown and return to the previous

window

 Click Cancel to return to the previous page without implementing any

changes to the settings.

c. Continue to Step 5.

M551177-01 Rev A 4-31

Programming: Digital Interface Control Sorensen ASD Series

Connection Status

Modbus Error

Skipped Loop

Indicator

Read Error Indicator

Write Error Indicator

Connection

Interface

Decimal Mode

Connect

/

Disconnect Button

Status:

Indicates the type of Modbus connection to the
power supply (TCP / RTU) and also the IP address
if an Ethernet connection is used or the COM port if
a serial connection is used for communications with
the power supply

[Modbus Error] field:

Displays the power supply Modbus error register

[Skipped Loop]

indicator:

Color changes to red if a communications looped is
skipped due to the program being busy.

Read Error:

Color changes to red and displays a hexidecimal
error code if a Modbus read error occurs; Reset by
clicking in the field.

Write Error:

Color changes to red and displays a hexidecimal
error code if a Modbus write error occurs; Reset by
clicking in the field.

Decimal Mode:

These radio buttons change the mode which the
program uses to send decimal values to the power
supply, this setting has little or no effect on the
accuracy of setpoint and readback values

Interface:

Drop-down button to select a communication mode
connection to the power supply using an Ethernet
connection or a serial connection using one of the
computer’s COM ports

[Connect] /
Disconnect:

Click to connect or disconnect from the power
supply’s digital communications interface.

5. Click the Connect button in the bottom right corner of the

Master Controls page.

At this point the program will attempt to make a communications
connection using the selected interface (Ethernet or Series).

 If the communications connection is successful, the label on the

Connect button will change to Disconnect while the program
begins cyclic communications with the power supply.

 The Status bar at the bottom of the interface window will provide

information as described next.

STATUS BAR

The Status Bar indicates the status of the communications connection to
the power supply. It also allows configuration of whether an Ethernet or
Serial connection is made to the power supply and the decimal mode
used when communicating with the power supply.

4-32 M551177-01 Rev A

Sorensen ASD Series Programming: Digital Interface Control

Connect

/

Disconnect Button

4.6.2 ENDING A CONNECTION

Click the Disconnect button at the bottom right corner of the control
interface window. The communications connection will be closed and the
Disconnect button label will change to Connect, ready for another
connection to be made.

The preceding quick-reference provided instructions for starting and
ending communications with the power supply. The remainder of this
section describes the menus and pages of the ASD MODBUS Control
Interface.

M551177-01 Rev A 4-33

Programming: Digital Interface Control Sorensen ASD Series

Temperature

Coefficients Window

Ethernet Settings

Window

Serial Settings

Window

Window

Description

Ethernet Settings

configure the parameters for connecting to a power
supply using Modbus over Ethernet
communications

Serial Settings

configure the parameters for connecting to a power
supply using Modbus over Serial communications

Temperature
Coefficients

configure temperature coefficients for estimating
temperature based on physical characteristics of
the load connected to the power supply

4.6.3 SETTINGS MENU

The Settings Menu allows the user to open windows for configuration of
communications and temperature coefficient settings used by the
program.

Table 4-19. Settings Menu Selections

The Ethernet Settings window and the Serial Port Settings were
described in the preceding instructions for Making a Connection.

4-34 M551177-01 Rev A

Sorensen ASD Series Programming: Digital Interface Control

0

0

T

alpha

1

)R(T

R

eTemperaturEstimated 





PARAMETER

DESCRIPTION

R(T0)

The load resistance at reference temperature T0

T0

The reference temperature

Alpha

The linear temperature coefficient

TEMPERATURE COEFFICIENTS WINDOW

The Temperature Coefficient window is used for configuring calculated
temperature readings based on the output resistance readback of the
power supply. The calculated temperature readback is also used for load
temperature fault generation. The following equation is used by the
program for calculating the estimated temperature:

M551177-01 Rev A 4-35

Programming: Digital Interface Control Sorensen ASD Series

Module Information

Window

Flight Data

Recorder Window

External Process

Configuration Window

Scope Window

Device Status

Window

Download

Constants Window

Advanced Mode

WINDOW

DESCRIPTION

Module Information

Reads information from modules discovered by the master.

Scope

Graphically displays signals from the power supply similarly to
signals displayed by a oscilloscope.

Flight
Data
Recorder

Reads data and allows configuration of the master controller
and module flight data recorders.

Device Status
Window

Reads the status of all devices connected to the power supply
master controller including undiscovered modules and
disabled master controllers.

External Process
Configuration

Window

Allows configuration and compensation of logic that allows the
power supply to control an external process such as
temperature or pressure.

Download Constants
Window

Provides interface to download constant values from the
master controller and modules to a file that can be sent to
AMETEK Programmable Power for technical support.

Advanced
Mode

Changes the behavior of some of the sliders and controls on
the main form so setpoints can be sent through Modbus even
when the power supply is being controlled through the analog
interface. Note: this has no effect on the behavior of the
power supply.

4.6.4 VIEW MENU

The View Menu leads to other windows to access additional functionality.

4-36 M551177-01 Rev A

Sorensen ASD Series Programming: Digital Interface Control

MODULE INFORMATION WINDOW

The Module Information window reads information from all of the modules
connected to and discovered by the power supply’s master controller.

Note: if the cursor is held over the Hardware ID, Status, Supervisory
Faults and Supervisory Warnings fields a tool tip will appear giving
descriptions of the bits in that field

Update button Stops the program’s normal communications with the

power supply and the power supply will read information
from its discovered modules one field at a time

M551177-01 Rev A 4-37

Programming: Digital Interface Control Sorensen ASD Series

SCOPE WINDOW

The display in the Scope window emulates an oscilloscope and allows the
operator to read some of the power supply internal variables and to
display them graphically. All scope values are normalized values and the
scaling used by the power supply must be known to get reasonable
values. The scope automatically sizes the X and Y axis to fit all of the
data in the scope window

Note: when the scope is reading data from the power supply the normal
read and write communications between the program and power supply
are interrupted

Note: the scope only reads 16-bits samples, if a 32-bit variable is being
read then the Shift configuration must be set so the most significant bits
of data are not lost

4-38 M551177-01 Rev A

Sorensen ASD Series Programming: Digital Interface Control

Parameter

Description

Trigger group

Trigger

Configures the trigger threshold.

Delay

Sets the delay from the beginning of the sample to the
trigger point.

Positive slope

Causes the trigger event to occur on a positive
transition through the trigger threshold.

Negative slope

Causes the trigger event to occur on a negative
transition through the trigger threshold.

Other controls

Scope1

Allows the operator to select a predefined signal from
the power supply for Channel 1 of the scope and
configures the other parameters for this signal.

Scope2

Allows the operator to select a predefined signal from
the power supply for Channel 2 of the scope and
configures the other parameters for this signal.

Decimation

Configures the sampling rate of the scope. 1 = 125 Hz;
2 = 62.5 Hz; 3 = 61.25...

Missed Data

This box turns red when there is scope data from the
power supply that has been missed by the program

Continuous Update

When this control is checked, the scope continues to
sample and append data to the scope window until the
scope is stopped; when unchecked the scope takes
one sample and stops.

trigger and
continuous with double
buffer

radio buttons to select whether the scope triggers on
Channel 1, triggers on Channel 2 or takes continuous
samples with no trigger.

Shift

Configures how many bits to shift that channel’s data to

the right.

IQ

Configures the IQ used by the data on a channel.
(converts IQ-formatted decimal numbers to floating
point).

Long

Checked indicates that the scope variable is a 32-bit
variable. Unchecked indicates that the scope variable is
a 16-bit variable.

Configure

Sends the current settings to the power supply so it can
configure its internal scope.

Update Data [Stop Update]

Begins reading scope data from the power supply or to
stop reading data from the power supply in Continuous
Update mode

M551177-01 Rev A 4-39

Programming: Digital Interface Control Sorensen ASD Series

Parameter

Description

Display window

Log that displays the progress of FDR downloads, the
success of configuring and sending commands to the FDR,
and any communication error.

Target group

Master / Module

Radio buttons to set whether the selected device is a
module or master flight data recorder

ID

Drop-down menu to select the id of the device made
available per the Master or Module radio button.

Start

Begins capture of the current measurements of all module
and master devices.

Period (s)

Sets the interval (in seconds) between measurement
captures. If zero (0) then only one capture will be taken.

FLIGHT DATA RECORDER WINDOW

The Flight Data Recorder (FDR) in the power supply’s master controllers
and modules takes periodic status snapshots of these devices and also
records information when faults occur on these devices. The FDR
displays these data, and also allows configuration and management of
the Flight Data Recorders.

Note: when data is being downloaded from the FDR this program’s

normal communications are interrupted
Note: downloading FDR data with the power supply output enabled is not

recommended

4-40 M551177-01 Rev A

Sorensen ASD Series Programming: Digital Interface Control

Parameter

Description

FDR Control buttons

Start FDR

Starts the selected FDR so it periodically captures FDR
data while the power supply output is enabled.

Stop FDR

Stops the selected FDR so it does not periodically capture
FDR data.

Write Test Data

Writes a test data entry to the selected FDR.

Force Vin Capture

Causes the selected module FDR to capture input voltage
waveforms.Note: this control is disabled when Master FDR
radio button is selected.

Force Update

Causes the selected FDR to make a data entry of its
current state.

Reset FDR

Resets the selected FDR, clearing all FDR entries from the
FDR, and starts recording again.

FDR Timing group

Note: FDR timing applies to power supply master
controllers, if a module is selected these controls will be
disabled.

Period (s)

Configures the interval (in seconds) between periodic FDR
updates when the output of the power supply is enabled.

Vin sampling (Hz)

Configures the sampling rate of module FDR input voltage
scope captures.

Update

Updates the timings of the power supply master control
(applies the interval input in the Period(s) field and the
sampling rate selected in the Vin sampling menu).

FDR Data buttons

Download Events

Starts downloading FDR data from the selected FDR to the
tabbed pages in the lower half of this window, i.e., Master
FDR Data, Module FDR Data, Module Scope Data.

Stop Download

Stops a download that is in progress.

Clear Log

Clears all text from the log display at the top of the FDR
window

Save Data

Saves the FDR data to .csv files for analysis in Excel. Note:
the data from each tabbed page will be saved in a separate
file, three dialog boxes will allow the user to select where
this data is saved and to name the files.

Clear Tab

Deletes all of the data from the tabbed page that’s active

Tabbed pages

Master FDR Data

Populated with the FDR data downloaded from master
controllers.

Module FDR Data

Populated with the FDR data downloaded from module
controllers.

Module Scope Data

Populated with the FDR scope data downloaded from
module controllers.

M551177-01 Rev A 4-41

Programming: Digital Interface Control Sorensen ASD Series

Clear

Clears the current display in this window.

Get Status

click this button to begin polling for information from all of the
devices connected to the internal communications interface of
the power supply; the updated information is displayed.

Enable Process Control

Setpoint Source

Control Mode

PID

Compensation

Analog Interface

Configuration

CONNECTED DEVICE STATUS WINDOW

The Connected Device Status window shows information about all of the
devices connected to the internal communications interface of the power
supply. These devices can include disabled master controllers and
modules that have not been discovered by the active master controller.

PROCESS CONTROL WINDOW

Activating the Process Control enables the power supply to control an
external process such as temperature or pressure based on transducer
measurements. It also allows configuration of the signals controlling the

4-42 M551177-01 Rev A