Xantrex XTR 40-21, XTR 100-8.5, XTR 150-5.6, XTR 300-2.8, XTR 600-1.4 Operating Manual

...

XTR 6-110 XTR 8-100 XTR 12-70 XTR 20-42 XTR 33-25 XTR 40-21 XTR 60-14 XTR 80-10.5 XTR 100-8.5 XTR 150-5.6 XTR 300-2.8 XTR 600-1.4

Operating Manual

XTR 850 Watt Series Programmable DC Power Supply

Operating Manual

About Xantrex

Xantrex Technology Inc. is a world-leading supplier of advanced power electronics and controls with products from 50 watt mobile units to 2.5 MW utility-scale systems for wind, solar, batteries, fuel cells, microturbines, and backup power applications in both grid-connected and stand-alone systems. Xantrex products include inverters, battery chargers, programmable power supplies, and variable speed drives that convert, supply, control, clean, and distribute electrical power.

Trademarks

XTR 850 Watt Series Programmable DC Power Supply is a trademark of Xantrex International. Xantrex is a registered trademark of Xantrex International.

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

Exclusion for Documentation

UNLESS SPECIFICALLY AGREED TO IN WRITING, XANTREX TECHNOLOGY INC. (“XANTREX”)

(

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 XANTREX CONTENT IS CONTAINED WITH THE ENGLISH LANGUAGE VERSION WHICH IS POSTED AT WWW.XANTREX.COM.

Date and Revision

July 2007 Revision B

Part Number

M370046-01

M370046-01 ii

Product Numbers (FGAs)

XTR6-110 XTR60-14

XTR8-100 XTR80-10.5

XTR12-70 XTR100-8.5

XTR20-42

XTR33-25

XTR40-21

XTR150-5.6

XTR300-2.8

XTR600-1.4

Part Numbers for Rack Mount Kits

Rack Mount Kit Part Number

Dual XTR 850 Watt RM-D-XTR1

Single XTR 850 Watt RM-S-XTR1

Rack mount rails for XTR Series

RM-XTR

Contact Information

Telephone: 1 800 733 5427 (toll free North America)

Fax: 1 858 678 4482

Email: prg.info@xantrex.com

Web: www.xantrex.com

1 858 450 0085(direct)

M370046-01 iii

About This Manual

Purpose

The Operating Manual provides installation and operating information for the XTR 850 Watt Series Programmable DC Power Supply.

Scope

The Manual provides safety information, features and specifications, installation procedures, functional test procedures, and operating procedures for both local (front panel) operation and remote operation.

The Manual does not provide information on the GPIB and Ethernet (ENET) interface options. See the XTR 850 Watt GPIB and Ethernet Interface Option Operating Manual (Part number M370046-06).

Audience

The Manual is intended for the user who is familiar with electronic power supplies, Constant Voltage and Constant Current operating modes, and the control of output power. The user should be familiar with practicing safe techniques while making supply or pin connections.

Conventions Used

The following conventions are used in this guide.

WARNING

Warnings identify conditions or practices that could result in personal injury or loss of life.

CAUTION

Cautions identify conditions or practices that could result in damage to the unit or other equipment.

Important:

know. They are not as serious as Warnings or Cautions.

M370046-01 v

Important notes provide information that is important for you to

About This Manual

Related Information

For related information on this product, see also:

• XTR 850 Watt GPIB and Ethernet Interface Option Operating Manual (Part number M370046-06) provides information on the GPIB and Ethernet interface option.

• XTR 850 Watt Series Programmable DC Power Supply: Quick Reference Guide (Part number M370046-04) is included with your power supply and provides an introduction to using the front panel interface.

• Rack Mount Kit Options Installation Instructions (Part number M370046-05) provides information on rack mounting a single or dual XTR 850 Watt.

More information about Xantrex Technology Inc. as well as its products and services is available at www.xantrex.com.

Acronyms

Acronym Definition

APG Analog Programming

AUX Auxiliary

ENET Ethernet

ISOL Isolated Analog Programming

OTP Over Temperature Protection

OVP Over Voltage Protection

PSU Power Supply Unit

TVS Transient Voltage Suppressor

UVP Under Voltage Protection

Font Conventions

This Manual uses the following typographical conventions:

7 segment

Command body text

For display and readback information on the output voltage and current displays.

Represents SCPI commands.

vi M370046-01

Important Safety Instructions

WARNING: High energy and high voltage

Exercise caution when using a power supply. High energy levels can be stored at the output voltage terminals on a power supply in normal operation. In addition, potentially lethal voltages exist in the power circuit and on the output and sense connectors of a power supply with a rated output greater than 40 V. Filter capacitors store potentially dangerous energy for some time after power is removed.

WARNING: Fire hazard

Operate the power supply in an environment free of flammable gases or fumes. To ensure that the power supply's safety features are not compromised, use the power supply as specified in this Manual and do not substitute parts or make any unauthorized modifications. If service is necessary, please return the power supply to the Authorized Service Center. See “Return Material Authorization Policy” on page WA–3.

WARNING: Limitations on use

The XTR 850 Watt Series Programmable DC Power Supply is not intended for use in connection with life support systems or other medical equipment or devices.

CAUTION: For use as a battery charger

When you are using a power supply for battery charging applications, it is essential to provide an appropriately sized fuse or circuit breaker in series between the power supply output and the battery. Installation of a protector (fuse or DC circuit breaker), rated for about 115% of the maximum current rating of the power supply and designed specifically to interrupt the DC voltage of the battery, will provide adequate current protection. Where several power supplies are in parallel, it is best to fuse each power supply rather than use one fuse at the battery.

Power Supply Safety Markings

Alternating Current On (Supply)

Earth (Ground) Terminal Off (Supply)

Protective Conductor Terminal

M370046-01 vii

Caution (Check the Manual for additional information.)

Safety

Standard Warnings

WARNING: Keep these instructions

This chapter contains important safety and operating instructions. Read and keep this Operating Manual for future reference.

1. Before installing and using the XTR 850 Watt Series Programmable DC Power Supply, read all instructions and cautionary markings on the XTR and all appropriate sections of this Manual.

2. The XTR is for indoor use only. Do not expose the XTR to moisture. To reduce risk of fire hazard, do not cover or obstruct the ventilation openings. Be sure to install the XTR in a compartment which allows air to reach the ventilation inlets on the front and rear of the unit to prevent overheating. For more information, see “Ventilation” on page 2–4.

3. To avoid a risk of fire and electric shock, make sure that the existing wiring is in good condition and the wire is not undersized. Do not operate the XTR with damaged or substandard wiring.

4. Do not operate the XTR if it has received a sharp blow, been dropped, or otherwise damaged in any way. If the XTR is damaged, see “Warranty and Product Information” on page WA–1.

5. Do not disassemble the XTR. It contains no user-serviceable parts. See the “Warranty and Product Information” on page WA–1 for instructions on obtaining service. Attempting to service the XTR yourself may result in a risk of electrical shock or fire. Internal capacitors remain charged after all power is disconnected.

6. To reduce the risk of electrical shock, disconnect AC power from the XTR before attempting any maintenance or cleaning or working on any circuits connected to the XTR. Turning off controls will not reduce this risk.

viii M370046-01

Contents

Important Safety Instructions

Introduction

Features and Options - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -1–2 XTR 850 Watt Models - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -1–3 Front Panel - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 1–4

Front Panel Display and Controls - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -1–5

Rear Panel Connectors - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 1–6

Installation

Basic Setup Procedure - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2–2 Step 1: Inspecting and Cleaning - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -2–3

Initial Inspection - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -2–3 Periodic Cleaning - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2–3

Step 2: Location and Mounting - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -2–4

Rack Mounting - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -2–4 Purchasing Rack Mount Kits - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2–4 Ventilation - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2–4

Step 3: Connecting AC Input Power - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -2–5

AC Input Connector - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -2–5

Step 4: Selecting Load Wires - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -2–6

Load Wiring - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -2–6

Step 5: Performing Functional Tests - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -2–8

Powering the Power Supply On/Off - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -2–8 Voltage and Current Mode Operation Checks - - - - - - - - - - - - - - - - - - - - - - - -2–9

Step 6: Connecting Loads - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2–10

DC Output Connectors - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2–10 Inductive Loads - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2–11 Connecting Single Loads - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2–11 Connecting Multiple Loads - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2–12

Step 7: Connecting Remote Sensing - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2–13

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - vii

M370046-01 ix

Local Operation

Introduction - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -3–2 Configuring Settings from the Front Panel - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–2

Using the 9-Position Mode Control Knob - - - - - - - - - - - - - - - - - - - - - - - - - - -3–2 Using the Rotary knob/Enter button - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -3–2 Coarse and Fine Adjustment Modes - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -3–3

Navigating the Menu System - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -3–5

Setting VOL and CUR Modes - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -3–5

Normal Display Mode and Inactivity Timeout - - - - - - - - - - - - - - - - - - - - - - - - 3–7 Display Messages on the Front Panel - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -3–9 Standard Operation- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–11

Operating Modes - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–11

Shipped Configuration (Local Operation) - - - - - - - - - - - - - - - - - - - - - - - - - - 3–15 Turning the Output On/Off - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–15 Turning the Auxiliary Output On/Off - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–16 Output Auto Start Mode (Auto Restart) - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–16 Auxiliary Auto Start Mode - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–17 Alarms and Errors - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–18

Clearing Alarms - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–19

Front Panel ALARM LED - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–20

Alarm Masking - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–21

Alarm Output Latching - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–22 Setting Foldback Mode - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–23

Resetting Activated Foldback Protection - - - - - - - - - - - - - - - - - - - - - - - - - - 3–24 Using Over Voltage Protection (OVP)- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–25

Defining the OVP Set Point - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–26 Using Under Voltage Protection (UVP) - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–27

Defining the UVP Set Point - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–28 Over Current Protection (OCP) - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–28 Using Over Temperature Protection Lock (OTP) - - - - - - - - - - - - - - - - - - - - - - - 3–29

Defining the OTP Mode - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–29

Resetting in Latch Mode - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–29 Using the External Shutdown Function - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–30

Activating the External Shutdown Function - - - - - - - - - - - - - - - - - - - - - - - - 3–30

Controlling the External Shutdown Function - - - - - - - - - - - - - - - - - - - - - - - - 3–30

Defining the Polarity of the External Shutdown Signal - - - - - - - - - - - - - - - - - 3–31

Contents

x M370046-01

Interlock Function - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–32

Defining the Interlock Mode - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–32

Power On Status Signal - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–33 Hardware Malfunction Alarms - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–33 Current Configuration Memory Settings - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–34 User Setting Memory Locations - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–35

Saving User Setting Memory Locations - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–35

Recalling User Setting Memory Locations - - - - - - - - - - - - - - - - - - - - - - - - - 3–36 Local Lockout - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–37

Enabling Local Lockout - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–37

Disabling Local Lockout - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–37 Resetting the Power Supply - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–38 Using Multiple Power Supplies - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–40

Configuring Multiple Supplies for Series Operation - - - - - - - - - - - - - - - - - - - 3–42

Configuring Multiple Supplies for Current Sharing Operation (APG Method) - 3–44

Connecting to the Load in Local Sensing Mode (Parallel Control Method) - - - 3–46

Connecting to the Load in Remote Sensing Mode (Parallel Control Method) - - 3–47

Analog Programming (APG) and Isolated Analog

Programming (ISOL)

Contents

Introduction - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -4–2

Analog Programming (APG) of Output Voltage and Output Current - - - - - - - - -4–2

Remote Programming Options - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 4–3

Analog Programming (APG) Connector J1 - - - - - - - - - - - - - - - - - - - - - - - - - -4–5 Analog Programming Mode- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -4–9

Analog Programming With External Voltage Source - - - - - - - - - - - - - - - - - - - 4–9

Voltage-Controlled Voltage APG Setup - - - - - - - - - - - - - - - - - - - - - - - - - - - 4–10

Voltage-Controlled Current APG Setup - - - - - - - - - - - - - - - - - - - - - - - - - - - 4–12

Resistive-Controlled Voltage APG Setup - - - - - - - - - - - - - - - - - - - - - - - - - - 4–15

Resistive-Controlled Current APG Setup - - - - - - - - - - - - - - - - - - - - - - - - - - 4–17

Voltage and Current Readback - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 4–19 Isolated Analog Programming Mode (ISOL) - - - - - - - - - - - - - - - - - - - - - - - - - - 4–20

AUX Output and Isolated Analog Programming (ISOL) Connector - - - - - - - - 4–20

Voltage-Controlled Voltage ISOL Setup - - - - - - - - - - - - - - - - - - - - - - - - - - 4–23

Voltage-Controlled Current ISOL Setup - - - - - - - - - - - - - - - - - - - - - - - - - - - 4–25

Resistive-Controlled Voltage ISOL Setup - - - - - - - - - - - - - - - - - - - - - - - - - - 4–28

Resistive-Controlled Current ISOL Setup - - - - - - - - - - - - - - - - - - - - - - - - - - 4–30 Voltage and Current Readback (Isolated)- - - - - - - - - - - - - - - - - - - - - - - - - - - - - 4–32

xi M370046-01

Remote Operation

Introduction - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -5–2 Hardware and Connection Setup- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -5–3

Configuring Remote Control Using RS-232 - - - - - - - - - - - - - - - - - - - - - - - - -5–3

Configuring Remote Control Using RS-485 - - - - - - - - - - - - - - - - - - - - - - - - -5–7

Configuring Remote Control using the USB Connector - - - - - - - - - - - - - - - - -5–9

Setting Up the PC to Use the USB Connection - - - - - - - - - - - - - - - - - - - - - - - 5–9

Ethernet (ENET) or GPIB Connector (Optional) - - - - - - - - - - - - - - - - - - - - - 5–15

Multiple Power Supply Connections to RS-485 Bus - - - - - - - - - - - - - - - - - - - 5–15 Terminal Configuration- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–17

Data Format - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–17

End of Message - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–17

HyperTerminal - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–17

Selecting the Appropriate Communication Port - - - - - - - - - - - - - - - - - - - - - - 5–20

Multichannel Address Setting - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–21

Remote Interface Addressing - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–22

Multichannel Commands Explained - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–23

Status Reporting in SCPI - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–25 Status Registers Model from IEEE 488.2 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–27 Status Byte - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–28

Error/Event Queue (ERR) - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–28

Questionable Status Register Summary (QSR) - - - - - - - - - - - - - - - - - - - - - - 5–28

Message Available (MAV) - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–29

Standard Event Status Summary (ESB) - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–29

Master Summary Status (MSS) - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–29

Request Service (RQS) - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–29

Operation Status Register Summary (OSR) - - - - - - - - - - - - - - - - - - - - - - - - - 5–30

Standard Event Status Register (SESR) - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–31 Standard SCPI Register Structure - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–34 OPERation Status Register - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–35

Current SHare Sub-Register - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–38

Operation Status Register Commands - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–39

Current Sharing Sub-Register Commands - - - - - - - - - - - - - - - - - - - - - - - - - - 5–40

Shutdown Sub-Register Commands - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–41

Protection Sub-Register Commands - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–42 QUEStionable Status Register - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–43

VOLTage Sub-Register - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–46

Contents

xii M370046-01

Contents

TEMPerature Sub-Register - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–46

Questionable Status Register Commands - - - - - - - - - - - - - - - - - - - - - - - - - - 5–47

Voltage Status Register Commands - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–48

Temperature Status Register Commands - - - - - - - - - - - - - - - - - - - - - - - - - - 5–49 SCPI Error/Event Queue - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–50

Reset Command - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–52

Clear All Status Registers - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–53

SCPI Preset Status - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–54

Command Line Help System - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–55 Locking and Unlocking the Front Panel- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–60

Auto Sequence Programming - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–60 Configure Other Protection Mechanisms - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–67

Foldback Protection - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–67

Over Temperature Protection - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–68

Interlock Enable/Disable - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–68

Save and Recall - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–69

Set Analog Programming Level - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–69

Set Remote Programming Interface - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–70

Protection Mask (Enable Alarms) - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–71

Calibration and Troubleshooting

Introduction - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -6–2 Main Voltage and Current Calibration Principle - - - - - - - - - - - - - - - - - - - - - - - - -6–3

Understanding the Problem - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 6–3

Step 1: Gain Calibration - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -6–4

Step 2: Offset Calibration - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -6–4

Step 3: Recalibrate Gain - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -6–5 Calibrating the Output Voltage- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -6–6

Gain Calibration - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 6–6

Offset Calibration - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -6–6 Calibrating the Output Current - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -6–7

Gain Calibration - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 6–7

Offset Calibration - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -6–8 Over Voltage Protection Calibration - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -6–9 Non-isolated Analog Programming Calibration- - - - - - - - - - - - - - - - - - - - - - - - - 6–10

Non-isolated Voltage Monitoring Calibration - - - - - - - - - - - - - - - - - - - - - - - 6–10

Non-isolated Current Monitoring Calibration - - - - - - - - - - - - - - - - - - - - - - - 6–11

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Contents

Non-isolated Voltage Programming of Voltage Calibration - - - - - - - - - - - - - - 6–12

Non-isolated Resistive Programming of Voltage Calibration - - - - - - - - - - - - - 6–13

Non-isolated Voltage Programming of Current Calibration - - - - - - - - - - - - - - 6–14

Non-isolated Resistive Programming of Current Calibration - - - - - - - - - - - - - 6–15 Calibration Procedure for Isolated Modes - - - - - - - - - - - - - - - - - - - - - - - - - - - - 6–16

Isolated Voltage Monitoring Calibration - - - - - - - - - - - - - - - - - - - - - - - - - - - 6–16

Isolated Current Monitoring Calibration - - - - - - - - - - - - - - - - - - - - - - - - - - - 6–17

Isolated Voltage Programming of Voltage Calibration - - - - - - - - - - - - - - - - - 6–18

Isolated Resistive Programming of Voltage Calibration - - - - - - - - - - - - - - - - 6–19

Isolated Voltage Programming of Current Calibration - - - - - - - - - - - - - - - - - 6–20

Isolated Resistive Programming of Current Calibration - - - - - - - - - - - - - - - - - 6–21

Calibrating the Input Voltage APG Signal - - - - - - - - - - - - - - - - - - - - - - - - - 6–22

Calibrating the Input Current APG Signal - - - - - - - - - - - - - - - - - - - - - - - - - - 6–23 Storing and Loading Calibration Parameters- - - - - - - - - - - - - - - - - - - - - - - - - - - 6–25 Restore Factory Calibration - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 6–26 User Diagnostics - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 6–27

Emergency Shutdown - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 6–27

Unusual or Erratic Operation - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 6–27

Troubleshooting for Operators - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 6–28

SCPI Command Reference

SCPI Conformance Information - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - A–2

IEEE 488.2/SCPI Syntax and Style - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - A–2

SCPI Command Hierarchy - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - A–3

Using SCPI Commands - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - A–4

Parameter Types - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - A–7 SPCI Command Tree - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - A–8

SCPI Command Summary - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - A–14

Error Messages

Error Messages - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - B–2

Command Error List - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - B–3

Execution Error List - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - B–4

Device-Specific Error List - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - B–5

Query Error List - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - B–6

xiv M370046-01

Specifications

Electrical Specifications for XTR 850 Watt - - - - - - - - - - - - - - - - - - - - - - - - - - - C–2

AC Line Input Specifications for XTR 850 Watt - - - - - - - - - - - - - - - - - - - - - C–3 Remote Operation - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - C–4 Common Specifications for All Models - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - C–5

Contents

Warranty and Product Information

Index

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - IX–1

- - - - - - - - - - - - - - - - - - - - - - - - - -WA–1

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xvi

Figures

Figure 1-1 XTR 850 Watt Front Panel - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 1–4 Figure 1-2 Front Panel Display and Controls - - - - - - - - - - - - - - - - - - - - - - - - - - - - 1–5 Figure 1-3 Rear Panel: 6 V to 40 V Models- - - - - - - - - - - - - - - - - - - - - - - - - - - - - 1–6 Figure 1-4 Rear Panel: 60 V to 150 V Models - - - - - - - - - - - - - - - - - - - - - - - - - - - 1–6 Figure 1-5 Rear Panel: 300 V to 600 V Models - - - - - - - - - - - - - - - - - - - - - - - - - - 1–6 Figure 2-1 Maximum Load Wire Length for 1 V Line Drop- - - - - - - - - - - - - - - - - - 2–7 Figure 2-2 Connecting Single Loads - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2–11 Figure 2-3 Remote Sense Connection- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2–13 Figure 3-1 9 Position Mode Control Knob - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–2 Figure 3-2 Front Panel - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–7 Figure 3-3 Front Panel Menu System - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–8 Figure 3-4 Operating Modes - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–13 Figure 3-5 Split Supply Operation - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–41 Figure 3-6 Series Operation - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–42 Figure 3-7 Load Connections in Remote Sensing Mode - - - - - - - - - - - - - - - - - - - 3–43 Figure 3-8 Load Connections in Local Sensing Mode - - - - - - - - - - - - - - - - - - - - - 3–46 Figure 3-9 Load Connections in Remote Sensing Mode (Parallel Control Method) - 3–47 Figure 4-1 APG Connector Terminals - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 4–5 Figure 4-2 Inserting Screwdriver into Spring Terminal Block - - - - - - - - - - - - - - - - 4–7 Figure 4-3 APG and DC Output Connector - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 4–7 Figure 4-4 Programming Output Voltage using an External Voltage Source- - - - - - - 4–9 Figure 4-5 Programming Output Current using an External Voltage Source - - - - - - - 4–9 Figure 4-6 Programming Output Voltage using an External Resistor- - - - - - - - - - - 4–14 Figure 4-7 Programming Output Current using an External Resistor - - - - - - - - - - - 4–14 Figure 4-8 Voltage Readback Using APG Connector J1 - - - - - - - - - - - - - - - - - - - 4–19 Figure 4-9 Current Readback Using APG Connector J1 - - - - - - - - - - - - - - - - - - - 4–19 Figure 4-10 AUX Output and ISOL Connector Pinout - - - - - - - - - - - - - - - - - - - - - 4–20 Figure 4-11 Programming Output Voltage using an Isolated External Voltage Source 4–22 Figure 4-12 Programming Output Current using an Isolated External Voltage Source 4–22 Figure 4-13 Programming Output Voltage using an Isolated External Resistor - - - - - 4–27 Figure 4-14 Programming Output Current using an Isolated External Resistor - - - - - 4–27 Figure 4-15 Isolated Voltage Monitoring - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 4–32

M370046-01 xvii

Figures

Figure 4-16 Isolated Current Monitoring - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 4–32 Figure 5-1 Remote Control Connectors - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–3 Figure 5-2 RS-232 Communication Cable with DB-9 Pinout - - - - - - - - - - - - - - - - - 5–5 Figure 5-3 DB-25 Pinout - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–5 Figure 5-4 RS-232 Communication Cable with DB-25 Pinout - - - - - - - - - - - - - - - - 5–6 Figure 5-5 RS-485 Communication Cable with DB-9 - - - - - - - - - - - - - - - - - - - - - - 5–7 Figure 5-6 RS-485 Communication Cable from Master to Slave Unit - - - - - - - - - - - 5–8 Figure 5-7 Found New Hardware Wizard - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–10 Figure 5-8 Install Hardware Device Drivers - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–10 Figure 5-9 Completing the New Hardware Wizard - - - - - - - - - - - - - - - - - - - - - - - 5–11 Figure 5-10 Device Manager - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–12 Figure 5-11 Communications Port (COM1) Properties - - - - - - - - - - - - - - - - - - - - - 5–13 Figure 5-12 Completing the new hardware wizard - - - - - - - - - - - - - - - - - - - - - - - - 5–13 Figure 5-13 Multi Power Supply Connection to RS-485 Bus - - - - - - - - - - - - - - - - - 5–15 Figure 5-14 USB Settings - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–18 Figure 5-15 ASCII Setup - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–19 Figure 5-16 SCPI Status Reporting Model - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–26 Figure 5-17 IEEE 488.2 Register Model- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–27 Figure 5-18 Summary of Standard Event Status Register - - - - - - - - - - - - - - - - - - - 5–32 Figure 5-19 SCPI Register Model - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–34 Figure 5-20 Operation Status Register Fanout - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–35 Figure 5-21 SCPI QUEStionable Registers Fanout- - - - - - - - - - - - - - - - - - - - - - - - 5–44 Figure 6-1 Offset (Intercept) Error and Gain (Slope) Error- - - - - - - - - - - - - - - - - - - 6–3 Figure 6-2 Calibration: Step 1 Gain Calibration - - - - - - - - - - - - - - - - - - - - - - - - - - 6–4 Figure 6-3 Calibration: Step 2 Offset Calibration - - - - - - - - - - - - - - - - - - - - - - - - - 6–4 Figure 6-4 Calibration: Step 3 Recalibrate Gain - - - - - - - - - - - - - - - - - - - - - - - - - - 6–5 Figure C-1 XTR 850 Watt Mechanical Dimensions: 6 to 40 V Models - - - - - - - - - - C–7 Figure C-2 XTR 850 Watt Mechanical Dimensions: 60 V to 600 V Models - - - - - - - C–8

M370046-01 xviii

Tables

Table 1-1 XTR 850 Watt Series Voltage and Current Ranges - - - - - - - - - - - - - - - - 1–3 Table 2-1 Basic Setup Procedure - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2–2 Table 2-2 Current Carrying Capacity for Load Wiring- - - - - - - - - - - - - - - - - - - - - 2–6 Table 3-1 Select and Set from the Front Panel - - - - - - - - - - - - - - - - - - - - - - - - - - 3–3 Table 3-2 Front Panel Display Text - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–9 Table 3-3 Shipped Configuration - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–15 Table 3-4 Alarm Order of Precedence - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–18 Table 3-5 Alarm Mask Bit Positions - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–21 Table 3-6 Alarm Latch Bit Positions - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–22 Table 3-7 Power Cycle Saved/Recalled Settings - - - - - - - - - - - - - - - - - - - - - - - - 3–34 Table 3-8 User Accessible Saved/Recalled Settings- - - - - - - - - - - - - - - - - - - - - - 3–35 Table 3-9 Power Supply Default Settings- - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–38 Table 4-1 Monitor Lines - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 4–3 Table 4-2 Remote Programming Options- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 4–4 Table 4-3 APG Pins and Functions J1 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 4–5 Table 4-4 AUX Output and ISOL Connector Pins and Functions J3- - - - - - - - - - - 4–21 Table 5-1 Remote Control Connector Pins and Functions J4 and J6 - - - - - - - - - - - - 5–3 Table 5-2 DB-9 Pinouts - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–4 Table 5-3 RJ-45 Pinouts - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–4 Table 5-4 DB-25 Pinouts - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–5 Table 5-5 DB-9 Pinouts - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–7 Table 5-6 RJ-45 Plug Pinouts - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–7 Table 5-7 RJ-45 Plug on Slave Unit - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–8 Table 5-8 Rules for Multichannel Responses - - - - - - - - - - - - - - - - - - - - - - - - - - 5–23 Table 5-9 Status Byte Summary Register- - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–28 Table 5-10 Standard Event Status Register - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–32 Table 5-11 OPERation Status Register - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–36 Table 5-12 OPERation SHUTdown Status Register - - - - - - - - - - - - - - - - - - - - - - 5–37 Table 5-13 OPERation SHUTdown PROTection Status Register - - - - - - - - - - - - - 5–37 Table 5-14 OPERation CSHare Status Register - - - - - - - - - - - - - - - - - - - - - - - - - 5–38 Table 5-15 QUEStionable Status Register - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–45 Table 5-16 QUEStionable VOLTage Status Register- - - - - - - - - - - - - - - - - - - - - - 5–46

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Tabl es

Table 5-17 QUEStionable TEMPerature Status Register - - - - - - - - - - - - - - - - - - - - 5–46 Table 5-18 Preset Values of User Configurable Registers - - - - - - - - - - - - - - - - - - - 5–54 Table 5-19 Alarms Bit Mask - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–71 Table 6-1 Troubleshooting - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 6–28 Table A-1 IEEE 488.2 Commands - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - A–14 Table A-2 Readback Commands- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - A–16 Table A-3 SCPI Commands for Output Control - - - - - - - - - - - - - - - - - - - - - - - - A–17 Table A-4 SCPI Commands for Calibration - - - - - - - - - - - - - - - - - - - - - - - - - - - A–18 Table A-5 SCPI Commands to Clear All Protection Mechanisms- - - - - - - - - - - - - A–21 Table A-6 SCPI Commands for Foldback Protection - - - - - - - - - - - - - - - - - - - - - A–21 Table A-7 SCPI Commands for Power - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - A–22 Table A-8 SCPI Commands for Triggering - - - - - - - - - - - - - - - - - - - - - - - - - - - A–22 Table A-9 System Commands - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - A–23 Table A-10 Status Commands - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - A–26 Table A-12 Auto Sequence Commands - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - A–34 Table A-11 Protection Commands - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - A–34 Table B-1 Command Error List - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - B–3 Table B-2 Execution Error List - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - B–4 Table B-3 Device-Specific Error List - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - B–5 Table B-4 Query Error List - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - B–6 Table C-1 XTR 850 Watt Electrical Specifications for 6 V to 600 V Models - - - - - - C–2 Table C-2 Remote Operation - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - C–4

xx M370046-01

Introduction

Chapter 1, Introduction, describes the features of the XTR 850 Watt Series Programmable DC Power Supply.

Introduction

Features and Options

The XTR 850 Watt Series Programmable DC Power Supply provides stable, variable output voltage and current for a broad range of development and system requirements. The power supplies have a high power density and numerous industry standard interfaces:

• RS-232, RS-485, analog programming (APG), isolated analog programming (ISOL), and USB built-in ports.

• Optional GPIB or Ethernet (ENET) control for remote operation and readback.

• Seamlessly switches between front panel and any digital interface (RS-232, RS-485, USB, GPIB or ENET).

• Simultaneous digital displays for both voltage and current.

• Front panel control by Rotary knob/Enter button permits high resolution setting of the output.

• Active Power Factor Correction (PFC) reduces input current and input current harmonics.

• Automatic crossover system allows the power supply to switch operating modes between Constant Current and Constant Voltage operation.

• Multiple units can be connected in parallel or series to produce greater diversity or for use in higher power applications.

• Short-circuit protection of DC outputs provides greater operating safety.

• Built-in APG and ISOL interface provides a galvanically isolated analog voltage control of the output, master/slave output tracking, and remote Enable/disable for safety and precision.

• Remote output voltage sensing automatically compensates for cable losses.

• Software calibrated.

• Three user setting memory locations.

1-2 M370046-01

XTR 850 Watt Models

Table 1-1 lists the models in the XTR 850 Watt series covered by this Manual.

XTR 850 Watt Models

Table 1-1

Model Output Voltage Output Current

6-110 0–6 V 0–110 A

8-100 0–8 V 0–100 A

12-70 0–12 V 0–70 A

20-42 0–20 V 0–42 A

33-25 0–33 V 0–25 A

40-21 0–40 V 0–21 A

60-14 0–60 V 0–14 A

80-10.5 0–80 V 0–10.5 A

100-8.5 0–100 V 0–8.5 A

150-5.6 0–150 V 0–5.6 A

300-2.8 0–300 V 0–2.8 A

600-1.4 0–600 V 0–1.4 A

XTR 850 Watt Series Voltage and Current Ranges

M370046-01 1-3

Introduction

Front Panel

1 32

Figure 1-1

Item Description

1 Front panel power switch

2 Front panel display. See Figure 1-2 for details.

3 Air Intake Vents

XTR 850 Watt Front Panel

1-4 M370046-01

Front Panel Display and Controls

1 2 3 456 78 9

Front Panel

Figure 1-2

Item Description

1 Rotary knob/Enter button

2 Constant Voltage (CV) Mode LED (green)

3 Output Voltage Display

4 Constant Current (CC) Mode LED (green)

5 Output Current Display

6 Alarm Indicator LED (red)

7 OUTPUT ON/OFF button

8 Auxiliary Output ON/OFF (AUX ON/OFF) button

9 9-Position Mode Control Knob. For detailed information, see “Configuring Settings from

Front Panel Display and Controls

the Front Panel” on page 3–2.

M370046-01 1-5

Introduction

Rear Panel Connectors

Figure 1-3

Rear Panel: 6 V to 40 V Models

6 111087 9

100 - 240 Vac 47-63 Hz, 11.5 –6A MADE IN CANADA

Figure 1-4

6 11

Figure 1-5

Rear Panel: 60 V to 150 V Models

1 2

Rear Panel: 300 V to 600 V Models

100 - 240 Vac 47-63 Hz, 11.5 –6A MADE IN CANADA

10987

1-6 M370046-01

Item Description

Rear Panel Connectors

1 6 V– 40 V Models: DC Output Terminal Positive

60 V–150 V Models: DC Output Connectors Positive (6.5 mm hole diameter) 300 V–600 V Models: DC Output Connectors Positive

2 6 V– 40 V Models: DC Output Terminal Negative

60 V–150 V Models: DC Output Connectors Negative (6.5 mm hole diameter) 300 V–600 V Models: DC Output Connectors Negative

3 (J2) Ethernet (ENET) or GPIB Connector (optional)

4 (J4) RS-232/RS-485 Connector In Port

5 AC Input Connector (IEC Type)

6 Chassis Ground Stud

7 (J1) Analog Programming (APG) Connector. For pin information, see page 4–5.

8 (J3) AUX Output and Isolated Analog Programming (ISOL) Connector. For pin information, see

page 4–20.

9 (J5) USB Connector

10 (J6) RS-485 Connector Multichannel Port

11 Fan Exhaust Vents

M370046-01 1-7

1-8

Installation

Chapter 2, Installation, provides information and procedures for inspecting, installing, and testing the power supply.

Installation

Basic Setup Procedure

Table 2-1 provides a summary of the basic setup procedure with references to the relevant sections in this chapter. Refer to this table if you are unfamiliar with the installation requirements for the power supply. Complete each step in the sequence given.

Table 2-1

Step Description Action Reference

1 Inspect Inspect the power supply. “Step 1: Inspecting and Cleaning”

2 Install Install the power supply

3 Connect Input

4 Select Wires Select wires that are correctly

5 Test Perform functional tests for

6 Connect Loads Connect the load wires to the

7 Connect Remote

Basic Setup Procedure

Power

Sensing (if required)

on page 2–3.

“Step 2: Location and Mounting” on (benchtop or rack mount). Ensure adequate ventilation.

Connect AC input power. “Step 3: Connecting AC Input

rated for the maximum DC output current.

voltage mode operation, current mode operation, and front panel controls.

DC output.

Connect remote sensing connectors on power supply to load.

page 2–4.

Power” on page 2–5.

“Step 4: Selecting Load Wires” on

page 2–6.

“Step 5: Performing Functional

Tests” on page 2–8.

“Step 6: Connecting Loads” on

page 2–10.

“Step 7: Connecting Remote

Sensing” on page 2–13.

2-2 M370046-01

Step 1: Inspecting and Cleaning

Initial Inspection

When you first receive your unit, perform a physical check:

1. Inspect the unit for any scratches and cracks, broken switches, connectors or displays.

2. Ensure that the packing box contains the 7.5 foot (2.5 m) power cord.

3. If you see external damage or suspect internal damage, contact Xantrex Customer Service (see Contact Information on page iii) for an assessment. If the unit is damaged, save all packing materials and notify Xantrex Customer Service immediately. See packing instructions in “Return Procedure” on page WA–4.

Periodic Cleaning

The power supply only requires periodic cleaning, not routine servicing. Whenever a unit is removed from operation, clean the metal surfaces with naptha or an equivalent solvent, and clean the front panel with a weak solution of soap and water. Use low-pressure compressed air to blow dust from components on the printed circuit boards.

Step 1: Inspecting and Cleaning

M370046-01 2-3

Installation

Step 2: Location and Mounting

The power supply may be rack-mounted or used in benchtop applications.

Rack Mounting

The XTR 850 Watt power supply is designed to fill half of a standard 19 inch (483 mm) equipment rack.

Units can be combined with the same models in the 850 W series for customer applications.

Purchasing Rack Mount Kits

Contact Xantrex Customer Service (see “Contact Information” on page iii) about purchasing the Rack Mount Kit options for XTR 850 Watt. For a list of the part numbers, see “Part Numbers for Rack Mount Kits” on page iii. Installation information for the different rack mount options are provided with the rack mount kits.

For XTR product support, visit www.xantrex.com and navigate to the XTR home page.

Ventilation

Whether operating the power supply in a rack or on a bench, allow air to reach the ventilation inlets on the front and rear of the unit for cooling. The direction of airflow is from the front of the unit to the back of the unit. Ventilation space is not required at the top, bottom or sides of the power supply.

2-4 M370046-01

Step 3: Connecting AC Input Power

WARNING: Shock hazard

Disconnect AC power from the unit before removing the cover. Even with the front panel power switch in the Off position, live line voltages are exposed when the cover is removed. Repairs must be made by an Authorized Service Center.

Step 3: Connecting AC Input Power

WARNING: Shock hazard

There is a potential shock hazard if the power supply chassis and cover are not connected to an electrical ground via the safety ground in the AC input connector. Ensure that the power supply is connected to a grounded AC outlet with the recommended AC input cord configured for the available line voltage as described in this section.

WARNING: Shock hazard

The AC input cord is the disconnect device for the power supply. The plug must be a non-locking plug which is readily identifiable by and accessible to the operator. The input cord must be no longer than 9.84 feet (3 m).

AC Input Connector

The AC input connector is a standard IEC 16 A 250 V male connector located on the rear panel of the power supply. The AC input cord provided is rated for 30 A, 300 V and appropriate for use in any country.

M370046-01 2-5

Installation

Step 4: Selecting Load Wires

This section provides recommendations for selecting minimum load wire sizes.

Load Wiring

To select the wiring for connecting the load to the power supply, consider the following factors:

• Insulation rating of the wire.

• Current carrying capacity of the wire.

• Maximum load wiring length for operation with remote sense lines.

• Electrical noise and impedance effects of the load lines.

Insulation Rating

Use load wiring with a minimum insulation rating equivalent to the maximum output voltage of the power supply.

Current Carrying Capacity

The load wiring must have a current carrying capacity greater than the output rating of the power supply to ensure that the load wiring will not be damaged if the load is shorted. Table 2-2 shows the maximum current rating for various gauges of wire rated for 105 °C operation, based on a maximum current density of 450 A/cm

Operating at the maximum current rating shown in Table 2-2 results in an approximately 30 °C temperature rise for an appropriately-sized load wire operating in free air. Where load wiring must operate in areas with elevated ambient temperatures or bundles with other wiring, use larger gauges or wiring rated for higher temperatures.

Table 2-2

Wire Size (AWG)

20 2.5 6 61

18 4 4 97

16 6 2 155

14 10 1 192

12 16 1/0 247

10 21 2/0 303

836

2-6 M370046-01

Current Carrying Capacity for Load Wiring

Maximum Current (Amps)

Wire Size (AWG)

Maximum Current (Amps)

Step 4: Selecting Load Wires

Maximum Load Wiring Length For Operation With Sense Lines

Figure 2-1

Noise and Impedance Effects

To minimize noise pickup or radiation, use shielded twisted pair wiring of the shortest possible length for load sense wires. Connect the shield to the power supply chassis. Where shielding is impossible or impractical, simply twisting the wires together will offer some noise immunity.

Maximum Load Wire Length for 1 V Line Drop

M370046-01 2-7

Installation

Step 5: Performing Functional Tests

The functional test procedures include:

• Power-on and front panel functional checks

• Voltage mode operation and current mode operation checks.

For information on local operation, see “Local Operation” on page 3–1 for adjusting front panel controls and settings.

Powering the Power Supply On/Off

To power on the power supply:

1. Ensure that the front panel power switch is in the Off position.

2. Ensure that the AC line voltage is within operating range.

3. Connect the line cord to a grounded AC outlet.

4. Turn the front panel power switch to the On position.

After a short power-on delay, 8888 8888 illuminates on the output voltage and current displays, followed by PSU On.

After approximately 1 second, the display returns to normal status.

To power off the power supply:

◆ Turn the front panel power switch to the Off position.

AC FAIL will blink on the display. The ALARM LED illuminates. After a short delay, all lights on the display will not be illuminated.

2-8 M370046-01

Voltage and Current Mode Operation Checks

To perform the voltage and current mode operation checks:

1. Ensure that the front panel power switch is in the On position and the output is disconnected.

2. If the OUTPUT ON/OFF button is illuminated, press the button to turn off the output.

3. To check voltage mode operation, turn the mode control knob to the VOL position.

The voltage set point will blink dimming and then return to full brightness. For more information, see “Local Operation” on page 3–1.

4. Adjust the voltage to 5 V.

5. To check current mode operation, turn the mode control knob to CUR position.

Verify that the current set point is blinking in the output current display.

6. Adjust the current to 1 A.

7. Press the OUTPUT ON/OFF button to turn On.

Step 5: Performing Functional Tests

8. Turn the front panel power switch to the Off position.

9. Turn the front panel power switch to the On position.

10. Connect a short circuit across the output terminals. Use leads of sufficient current carrying capacity. (See “Step 4: Selecting Load Wires”.)

11. If the OUTPUT ON/OFF button is not illuminated, press the button to turn on the output.

CC Mode LED illuminates and the voltage and current are displayed.

CV Mode LED illuminates and the preset load current is displayed.

12. Turn the front panel power switch to the Off position.

M370046-01 2-9

Installation

Step 6: Connecting Loads

This section describes how to connect loads to the power supply for both single and multiple loads.

WARNING: Shock hazard

There is a shock hazard at the power supply output when operating at an output greater than 40 V. To protect personnel against accidental contact with hazardous voltages, ensure that the load and its connections have no accessible live parts.

CAUTION: Cable damage

When making connections to the output terminals, ensure terminals of opposite polarity do not touch. Load cables and sense wires should be provided with strain relief.

DC Output Connectors

WARNING: Shock hazard

Disconnect the AC input before making any connections. A shock hazard may be present at the output terminals. Allow 15 seconds after the AC power has been removed before making any connections.

6 V–40 V Models

The 6 V–40 V models are equipped with output terminals, as shown in Figure 1-3.

60 V–600 V Models

The 60 V–600 V models are equipped with output connectors, as shown in Figure 1-4 and Figure 1-5.

2-10 M370046-01

Inductive Loads

To prevent damage to the power supply from inductive kickback, connect a diode across the output. The diode must have a voltage rating at least 20% greater than the power supply's output voltage and have a current rating greater than or equal to the power supply's output rating. Connect the cathode to the positive output and the anode to the return.

Where positive load transients such as back EMF from a motor may occur, connect a Transient Voltage Suppressor (TVS) or a varistor across the output to protect the power supply. The breakdown voltage rating for the TVS or varistor must be approximately 10% higher than the rated supply output.

Connecting Single Loads

Figure 2-2 shows the recommended load connections for a single load which is sensing its voltage locally. Local sense lines shown are the default connections at the rear panel APG J1 connector (see Figure 4-1 on page 4–5). The load lines should use the largest gauge and shortest length of wire possible to ensure optimal performance.

You do not need remote sensing for basic operation of your power supply. However, if you wish to correct any small drops in your load lines, then use the remote sensing feature. See “Step 7: Connecting Remote Sensing” on page 2–13 for more information.

Step 6: Connecting Loads

Output

–

J1.1

J1.2

Output

J1.5

J1.6

Terminal

–

Terminal

Load

Local Sense

–

Power Supply

Local Sense

Figure 2-2

M370046-01 2-11

Connecting Single Loads

Installation

Connecting Multiple Loads

The proper connection of distributed loads is an important aspect of power supply use. The common method of connection is a radial load connection. Power is connected to each load individually from a single pair of terminals designated as the positive and negative distribution terminals. This pair of terminals may be the power supply output terminals, the load terminals, or a distinct set of terminals especially established for distribution use. In this scheme, there are no ground loops and the effect of one load upon another is minimized.

2-12 M370046-01

Step 7: Connecting Remote Sensing

WARNING: Shock hazard

There is a potential shock hazard at the sense connectors when using a power supply at an output greater than 40 V. Select wiring with a minimum insulation rating equivalent to the maximum output voltage of the power supply for use as local sense jumpers or for remote sense wires. Ensure that connections at the load end are shielded to prevent contact with hazardous voltages.

Remote sensing permits you to shift the regulation point of the power supply from the output terminals to the load or other distribution terminals.

Use shielded twisted pair wiring of 20 to 26 AWG for best noise performance. Make sure that the shielded twisted pair wiring insulation is rated higher than the maximum output voltage of the power supply. If possible, one end of the shield of the sense lines should be attached to the chassis ground of the power supply.

Step 7: Connecting Remote Sensing

Pin J1.6 on APG connector

Pin J1.1 on APG connector

Output terminals on power supply

Figure 2-3

Remote Sense Connection

-SNS

+SNS

load

output +

output -

Chassis ground stud

To connect the remote sense wires:

1. Ensure that the front panel power switch is in the Off position.

2. Using a small flat blade screwdriver, remove the two sense jumpers from pins J1.1 and J1.2, and from pins J1.5 and J1.6 on the APG Connector. See Figure 4-1, “APG Connector Terminals” on page 4–5.

M370046-01 2-13

Installation

3. Connect one end of the shielded twisted pair wire to the chassis ground point on the power supply.

4. Connect the positive sense line (+SNS) from the positive regulation point as close as possible to the load terminals to pin J1.1.

5. Connect the negative sense line (–SNS) from the return of the load to pin J1.1.

To compensate for losses in power leads connected to the output, the power supply provides sense connections beside the output terminals. With remote sense leads in place, the power supply regulates to the displayed voltage at the point where the sense lines are connected to the output leads. With the sense lines disconnected, the power supply regulates the voltage at the output terminals.

CAUTION: Equipment damage

Do not operate the power supply with sense lines connected to the load without also connecting the load power leads to the output terminals.

CAUTION: Reverse polarity

Avoid reversing positive (+) and negative (–) sense connections. When using remote sense to compensate for load line losses, ensure that the positive sense line is connected to the positive load terminal and the negative sense line is connected to the negative load terminal. Do not reverse these connections or the power supply may be damaged.

Important:

sensing can cause voltage instability due to inductance of the load leads. Measures to reduce inductance and/or capacitance (raising resonant frequency) or using local sense can be beneficial in stabilizing the system.

2-14 M370046-01

Long load leads with large capacitance at the load and remote

Local Operation

Chapter 3, Local Operation, provides the procedures for local (front panel) operation such as:

• Configuring settings.

• Operating in constant voltage mode and constant current mode.

• Using the protection features.

• Using multiple power supplies.

Local Operation

Introduction

Once you have installed the power supply and connected both the AC input power and the load (covered in “Installation” on page 2–1), the power supply is ready for local operation. To turn the power supply on, see “Powering the Power Supply On/Off” on page 2–8.

Configuring Settings from the Front Panel

Using the 9-Position Mode Control Knob

The 9-position mode control knob is used with the Rotary knob/Enter button to configure settings in local operation. See Figure 1-2, “Front Panel Display and Controls” on page 1–5 for location of the front panel features.

The mode control knob is used to select one of nine modes: VOL, CUR, FLD, PRT, SAV, RCL, CAP, and VAP. See Figure 3-1 and Table 3-1 for detailed information on the nine modes.

Figure 3-1

9 Position Mode Control Knob

Using the Rotary knob/Enter button

The Rotary knob/Enter button is used to change settings and set the value selected. The front panel displays information on the output voltage and output current displays. Each display has a maximum of four characters that are made up of 7 segments.

3-2 M370046-01

Coarse and Fine Adjustment Modes

Configuring Settings from the Front Panel

Coarse adjustment mode

When using local operation to set the current and voltage set points, enter the coarse adjustment mode followed by the fine adjustment mode. The coarse adjustment mode quickly adjusts the settings in large increments to reach the desired value.

Fine adjustment mode

Pressing the Rotary knob/Enter button to change the mode to fine adjustment mode provides the ability to manipulate the last significant digit. Once the exact desired value for the setting has been selected, press the Rotary knob/Enter button to commit the value to the unit. The coarse and fine adjustment modes are used for setting the voltage and current set points, OVP and UVP settings.

Table 3-1

9 Positions on the Mode Control Knob Turning the Rotary Knob lets you…

VOL (Voltage Programming) Select the voltage set point in coarse

CUR (Current Programming) Select the current set point in coarse

Select and Set from the Front Panel

or fine adjustment modes. See “Automatic Mode Crossover” on page 3–12.

or fine adjustment modes. See “Constant Current Mode Operation” on page 3–12.

Pressing the Enter Button lets you…

Set the value selected and cycle to the next setting.

FLD (Foldback) Select Foldback option: CC, CV or

none. See “Setting Foldback Mode” on page 3–23.

PRT (Protection) Select the OVP set point (see

page 3–25). Select the UVP set point (see page 3–27.) Select OTP temperature and Shutdown (see page 3–29.)

SAV (Save User Preset) Select the user setting memory

location. See “Saving User Setting Memory Locations” on page 3–35.

RCL (Recall User Preset) Select the user setting memory

location. See “Recalling User Setting Memory Locations” on page 3–36.

M370046-01 3-3

Set the value selected and cycle to the next setting.

Save user setting memory values.

Load user setting memory values into the power supply.

Local Operation

Table 3-1

9 Positions on the Mode Control Knob Turning the Rotary Knob lets you…

CAP (Current Analog Programming)

VAP (Voltage Analog Programming)

PGM (Remote Programming) Select the remote interface to be

Select and Set from the Front Panel

Select the programming source and select the range.

used for control.

Pressing the Enter Button lets you…

Set the value selected and cycle to the next setting.

Select interface and cycle to the next setting.

3-4 M370046-01

Navigating the Menu System

The menu system of the XTR follows a select and set model with the exception of the VOL and CUR modes. See “Setting VOL and CUR Modes”.

The general procedure for setting up the features in the select and set model is:

1. To select a mode, rotate the 9-position mode control knob to the desired mode or press the Rotary knob/Enter button once to activate the current selection on the mode control knob. See Figure 3-3.

2. To select the feature or setting, rotate the Rotary knob/Enter button to scroll through the different available settings of that mode.

The settings appear on the output current display.

3. Press the rotary knob/Enter button to select the feature or setting.

4. Set each value using the Rotary knob/Enter button. When the value has been selected, press the Rotary knob/Enter button to commit the updated value. Additional values may become available, depending on the setting that is being configured.

Navigating the Menu System

Setting VOL and CUR Modes

The only exceptions to the select and set model are the VOL and CUR modes which do not allow the selection of tracking and select and set mode by rotating the Rotary knob/Enter button. In VOL and CUR modes, the default entry mode setting is automatically selected as either voltage or current tracking, respectively.

Voltage and current values can be set in tracking mode or select and set mode using the Rotary knob/Enter button:

• Tracking mode—the new values take effect as the Rotary knob/Enter button is rotated.

• Select and set mode—the new values do not take effect until the Rotary knob/Enter button is pressed. See “Normal Display Mode and Inactivity Timeout” on page 3–7.

M370046-01 3-5

Local Operation

To access the tracking mode for entering voltage and current:

1. Select the VOL or CUR position on the mode control knob. If the set point is blinking, the unit is in coarse tracking mode.

• When the VOL mode is selected, the voltage set point will blink

in the output voltage display.

• When the CUR mode is selected, the current set point will blink

in the output current display.

2. Use the Rotary knob/Enter button to adjust the set point.

The adjustments you make to the set point affect the opposing output value (voltage when in CUR mode or current when in VOL), which will update in the non-blinking display.

3. Press the Rotary knob/Enter button to enter fine adjust tracking mode. The set point blinks faster when the unit is in fine adjust tracking mode.

4. Use the Rotary knob/Enter Button to fine tune the set point.

5. Once the set point has been selected, press the Rotary knob/Enter Button to exit tracking mode and return to normal display mode.

To access the select and set entry mode for the voltage and current set points:

1. Select VOL or CUR position on the mode control knob.

2. Press the Rotary knob/Enter button twice to scroll past the coarse and fine tracking modes without making any adjustment to the value. Coarse select and set mode has been selected.

3. If a change is made accidentally in tracking mode, select and set mode will not be available and you’ll need to start again at Step 1.

4. Select the desired value for this set point and then set the value using the Rotary knob/Enter button.

3-6 M370046-01

Normal Display Mode and Inactivity Timeout

Normal display mode appears on the output voltage and current displays when the configuration changes from the front panel have been completed or when the inactivity timeout occurs (default is 3 seconds). Normal display mode shows the output voltage and current values.

If a timeout occurs before the changes made to the value have been set, the changes will not be saved and you will have re-enter the changes. The inactivity timeout is variable from 1 to 20 seconds and can only be changed using the SCPI command.

The SCPI command (s) for these instructions are:

[:]SYSTem[<channel>]:FPANel[:TIMeout]

Navigating the Menu System

Figure 3-2

Important:

beginning users and expert users don't have to use the same timeout

Front Panel

Each user memory setting location stores the timeout so that

M370046-01 3-7

Local Operation

VOL

CUR

FLD

PRT

SAV

RCL

CAP

VAP

None

OVP

UVP

Overheat Protection

Shutdown Logic

Select Preset

Off

Voltage Isolated

Voltage Non-Isolate d

Resistive Isolated

Resistive N on- Isolated

Off

Voltage Isolated

Voltage Non-Isolate d

Resistive Isolated

Resistive N on- Isolated

Coar se Volt Pre-SetCoarse Volt Tracking

Coar se Curr ent Pre-SetCoarse Curr ent Tracking Fine Curr ent Pre-SetFine Current T racking

Fold Delay

OVP Coarse Ad just OVP Fine Ad just

UVP Coar se Adjust UVP F ine Adjust

On/Off

1/0

Legend:

Current APG Level

Voltage APG Level

Fine Volt Pr e-Se tFine Volt Tracking

Press Rotary Knob/Enter Button

when no modification of the

tracking value has been ma de.

Press Rotary Knob/Enter Button

Rotate Rotary Knob/Enter

Button

Mode Knob State

Setting/Value

PGM

Figure 3-3

Front Panel Menu System

USB

LAN

GPIB

RS-232

RS-485

Slave Address (1-30)

Local Lock

3-8 M370046-01

Address (1-30)

Data Rate

On/Off

Address (1-30)

Display Messages on the Front Panel

The front panel displays on the power supply will use text as shown in Table 3-2 to indicate the status or mode.

Table 3-2

Display Text Text Description

0 Negative Polarity 232 RS 232 485 RS 485 8888 All segments On, Power Up | Positive Polarity AC Alternating Current ADDr RS 485 Address ANPR Analog Programming AS Power On Autostart AvAS Auxiliary Autostart CAPr Current Analog Programming CLr Clear CC Constant Current CU Constant Voltage CrPC Coarse Current Pre-set Mode CrPU Coarse Voltage Pre-set Mode CUrr Current deLa Fold Delay done Done Err Error (debug) F0LD Foldback FAIL Fail FAn Fan FLA Flash FnpC Fine Current Preset Mode FnPU Fine Voltage Preset Mode FLd Foldback HBP5 Data rate (kbps) 6PIB GPIB Interface In Interlock LAn ENET Interface LE C Current APG Level

Front Panel Display Text

M370046-01 3-9

Local Operation

Table 3-2

Display Text Text Description

LE U Voltage APG Level Loc Lock LOCL Local OFF Off OCP Over Current Protection O7P Over Temperature Protection OUP Over Voltage Protection OvPF Over Voltage Protection fine adjustment On On OUPC OVP Calibration POL Polarity Pr0 Protection mode PSU Power Supply Unit R IS Isolated Resistive Analog Programming rCL Recall Preset rE Remote Programming/Interface rnIS Non-Isolated Resistive Analog Programming SAFE Safe SAUE Save Preset Sd Shutdown SLA Slave Remote Interface U IS Isolated Analog Voltage Programming UN IS Non-Isolated Analog Voltage Programming USb USB Interface UUP Under Voltage protection coarse adjustment UvPF Under Voltage protection fine adjustment UAPr Voltage Analog Programming UOL Vo l t a g e

Front Panel Display Text

A blinking numeric value is either a voltage or current set point in tracking mode. The display in which the set point appears, output voltage or output current display, indicates the type of set point, voltage or current.

3-10 M370046-01

Standard Operation

The power supply can be controlled by two methods, either from the front panel or from any of the remote interfaces. Front panel control is referred to as local operation (default setting) while control via any of the remote interfaces is called remote operation. To set up the power supply for remote operation, see Chapter 5, “Remote Operation”. Once the remote connection has been established, the power supply can switch seamlessly between local operation and any digital interface (RS-232, RS-485, GPIB, USB and Ethernet).

Local lockout is a feature that allows the front panel to be locked so that accidental button presses are ignored. This feature is often used to lock out the front panel while a user is controlling the power supply from a remote location.

The output of the power supply has two modes of operation: Constant Voltage (CV) mode (see page 3–12) and Constant Current (CC) mode (see page 3–12). Both of the operating modes are available regardless of which control method (local or remote) is used.

Operating Modes

Standard Operation

The output mode in which the power supply operates at any given time depends on the following factors:

• Output voltage set point V

• Output current set point I

• Impedance of the attached load R

The two output modes of operation are Constant Voltage (CV) mode (see page 3–12) and Constant Current (CC) mode (see page 3–12).

Output enabled When the output is turned on, both the voltage and current rise as quickly

as possible to try and reach the set points (V configured prior to enabling the output. Initially the unit will operate in CV mode, which is the default mode. As the voltage and current rise to meet the requirements of the load, the set point that is reached first (based on the R supply will remain in. The operating mode is indicated by either the CC mode LED or the CV mode LED, one of which will illuminate on the front panel.

Output disabled The mode of operation is not determined until the output is enabled. The

CV and CC mode LEDs will not indicate the mode while the output is disabled.

M370046-01 3-11

either V

SET

and I

SET

and I

SET

) will determine which mode the power

SET

SET)

that were

Local Operation

Constant Voltage Mode Operation

If the output is enabled and the configured current set point is much higher than the requirements for the attached load, then the voltage will rise until it reaches the voltage set point. When the output voltage reaches the voltage set point, it stops rising. The unit will continue to operate in CV mode. The load current will still vary to meet any changes in required load current draw resulting from a change in the attached load.

Constant Current Mode Operation

If the output is enabled, the voltage and current start to rise. At this time the unit is operating in CV mode (default operational mode). As the load current drawn reaches the value of the output current setting, the unit will switch to CC mode and not allow any additional current to be drawn above the value of I voltage will still vary to meet any changes in required output voltage resulting from a change in the attached load.

Automatic Mode Crossover

Mode crossover occurs when the unit makes the switch between operating modes. Crossover can occur from CV to CC or vice versa, depending on how the attached load resistance changes. Figure 3-4 shows the relationships between the variables.

For example, if the unit was initially operating in CV mode with the output voltage at the voltage set point and the load current below the I and the attached load resistance began to decrease, the current would rise to meet this change in the load. The load current will increase in proportion to the decrease in the load resistance until the load current drawn reaches the current set point. At this point further decreases in load resistance (increased load current requirements) will cause the unit to cross over into CC mode where the output voltage will vary with changing load resistance and the load current will remain at the I value.

The reverse operating mode change can also occur if the load resistance is increased to the point that the required load current drops below the I value. At that point the power supply would crossover to CV mode and the load current would be free to vary as the load resistance changed

. The unit is now operating in CC mode. The

SET

3-12 M370046-01

Standard Operation

Figure 3-4

Operating Modes

To s et the voltage set point (V

1. Turn the mode control knob to the VOL position or press the Rotary

knob/Enter button if the mode control knob is already at the VOL position.

The voltage set point is blinking in the output voltage display. The output current will be displayed in the output current display.

2. Set the desired voltage value using the Rotary knob/Enter button.

Important:

change the set points for OVP.

3. Press the Rotary knob/Enter button to transition to Fine Adjust mode.

The set point will blink faster to indicate fine adjust tracking mode.

4. Set the desired voltage value using the Rotary knob/Enter button.

5. Once the desired value has been set, press the Rotary knob/Enter

button to commit the setting.

SET):

If you can’t get the set point to the desired level, you may need to

M370046-01 3-13

Local Operation

Quick Tip Remote operation uses these SCPI commands. See page 5–1.

Important:

output voltage up to 105% over the model-rated maximum value. The power supply will operate within these extended ranges, but full performance to specification is not guaranteed.

The control circuits have been designed to allow you to set the

The SCPI command (s) for these instructions are:

[[:]SOURce[<channel>]]:VOLTage[:LEVEl][:IMMediate] [:AMPLitude]

Important:

are limited by the Over Voltage Protection and Under Voltage Protection settings.

To set the current set point (I

The maximum and minimum setting values of the output voltage

SET

1. Turn the mode control knob to the CUR position or press the Rotary knob/Enter button if the mode control knob is already at the CUR position.

The voltage set point is blinking in the output voltage display. The output current will be displayed in the output current display.

2. Set the desired current value using the Rotary knob/Enter button.

3. Press the Rotary knob/Enter button to transition to Fine Adjust mode.

The set point blinks faster to indicate fine adjust tracking mode.

4. Set the desired current value using the Rotary knob/Enter button.

5. Once the desired value has been set, press the Rotary knob/Enter button to commit the setting.

Important:

current can be set up to 105% over the model-rated maximum values. The power supply will operate within these extended ranges, but full performance to specification is not guaranteed.

The control circuits have been designed so that output

The SCPI command (s) for these instructions are:

[[:]SOURce[<channel>]]:CURRent[:LEVEl][:IMMediate] [:AMPLitude]

3-14 M370046-01

Shipped Configuration (Local Operation)

The power supply is configured for local operation at the factory. See Table 3-3 for a summary of this configuration. For more information on default settings, see Table 3-9 on page 3–38.

Turning the Output On/Off

Table 3-3

Local Control Configuration Additional References

Use the front panel controls to adjust the output voltage and current set point settings.

The OVP set point is adjusted at the front panel to 105% above the maximum rated output voltage.

Shipped Configuration

Turning the Output On/Off

Turning the output on will also turn off the ALARM LED if the ALARM LED has been latched on due to an alarm triggering and automatically clearing. See “Alarms and Errors” on page 3–18.

To turn on the output power:

◆ Press the OUTPUT ON/OFF button on the front panel or enter the

SCPI command.

The OUTPUT ON/OFF button will illuminate.

To turn off the output power:

◆ Press the OUTPUT ON/OFF button when the OUTPUT ON/OFF

button is illuminated.

The output will turn off and the LEDs will not be illuminated.

See Chapter 3, “Local Operation” for front panel operation. See Chapter 4, “Analog Programming (APG) and Isolated Analog Programming (ISOL)” for analog programming procedures.

See “Using Over Voltage Protection (OVP)” on page 3–25 for the adjustment procedure.

Important:

activated. See “Using the External Shutdown Function” on page 3–30.

Quick Tip Remote Operation uses these commands. See page 5–1.

M370046-01 3-15

The SCPI command (s) for these instructions are:

[:]OUTPut[<channel>][:POWer][:STATe]

The main output will not turn on if the shutdown function is

Local Operation

Turning the Auxiliary Output On/Off

To turn on the auxiliary output:

◆ Press the AUX ON/OFF button on the front panel.

The AUX ON/OFF button will illuminate.

Important:

AUX_ON_OFF signal line is being used to disable the auxiliary outputs. See “AUX Output and Isolated Analog Programming (ISOL) Connector” on page 4–20.

To turn off auxiliary output:

◆ Press the AUX ON/OFF button on the front panel again.

The AUX ON/OFF button will not be illuminated.

If the auxiliary output is activated, +5 V on J3.9 (+AUX1) and +15 V on J3.11 (AUX2) will be present with respect to Pin J3.2 or Pin J3.6 (COM_ISOLATED). (See also “AUX Output and Isolated Analog Programming (ISOL) Connector” on page 4–20 for more details.)

The SCPI command (s) for these instructions are:

[:]OUTPut[<channel>]:AUXiliary[:STATe]

The auxiliary output will not turn on if the external

Output Auto Start Mode (Auto Restart)

The Auto Start mode establishes the state of the output of the power supply after recovery from a complete power cycle (all front panel LEDs are not illuminated).

If Auto Start mode is set to On, the power supply output will return to its previous value when the power supply is powered up again.

If Auto Start mode is set to Off, the power supply output will remain off after the power supply is powered up again.

To change the Auto Start mode:

1. Press and hold the OUTPUT ON/OFF button for 1 second.

AS On or AS Off is displayed.

2. Switch the Auto Start mode.

The SCPI command (s) for these instructions are:

[:]OUTPut[<channel>][:POWer][:STATe]:PowerON[:STATe]

3-16 M370046-01

Auxiliary Auto Start Mode

The Auxiliary Auto Start mode determines the state of the auxiliary output after a complete power cycle (all front panel LEDS are not illuminated). With Auxiliary Auto Start mode turned to On, the auxiliary output will be activated after the power supply is powered up again.

To define the Auxiliary Auto Start mode:

1. Press and hold the AUX ON/OFF button for 1 second.

AuAS On or AuAS Off is displayed.

2. To change to status to On or Off, press the AUX ON/OFF button.

The SCPI command (s) for these instructions are:

[:]OUTPut[<channel>]:AUXiliary:PowerON[:STATe]

Auxiliary Auto Start Mode

M370046-01 3-17

Local Operation

Alarms and Errors

Several conditions can cause alarms in the XTR. Some conditions are:

• From user configurable features.

• Controlled in hardware and will trigger regardless of configuration.

All alarms, with the exception of the Fan alarm, will result in the output of the power supply being disabled. The Fan alarm does not affect the output.

When an alarm is triggered, the appropriate alarm message will begin blinking on the display and the Alarm LED will be illuminated.It is possible that more than one alarm will trigger at the same time. When this occurs, the alarm with the highest precedence will blink on the display. Table 3-4 lists the precedence of alarms. If the alarm is cleared and the event which caused the alarm has not been corrected, then the alarm may trigger again immediately. Fix the reason for the alarm before you clear it.

Table 3-4

Alarm Precedence Output

AC Fail 1 (Highest) Yes No

Over Temperature Protection (OTP) 2 Yes Yes

Fan 4 No Yes

Interlock 6 No No

Over Voltage Protection (OVP) 7 Always No

Over Current Protection (OCP) 8 Always No

Foldback 9 Yes Yes

External Shutdown 10 No Yes

Under Voltage Protection (UVP) 11 (Lowest) No Yes

Flash Checksum Failure

1.The Flash Checksum Failure alarms are an exception as they are a terminal alarm that can only occur during boot up. It can only be cleared by doing a soft reset (losing the configuration of the unit) or by power cycling the unit.

Alarm Order of Precedence

Maskable Display

Latch

N/A N/A N/A

AC Fail

O7P Pro

FAn Pro

In Loc

OVP Pro

OCP pro

FLD Pro

SD POL

UUP Pro

FLA FAIL

3-18 M370046-01

Clearing Alarms

Clearing Triggered and Manual Alarms

To clear a triggered alarm, use one of the following methods:

• Turn the power supply Off and then On.

• Press and hold the Rotary knob/Enter button for 3 seconds.

• Press the reset key combination (Flash Fail ONLY). See “Resetting the Power Supply” on page 3–38.

To clear a manual alarm:

1. Press the Rotary knob/Enter button for 3 seconds.

The ALr CLr message will be displayed on the front panel for a few seconds.

Alarms and Errors

Important:

highest precedence alarm is cleared. If another alarm has occurred, then this alarm will now become the highest precedence alarm and will begin blinking on the display.

2. Repeat the alarm clearing until you have cleared all alarms.

Clearing a Flash Failure Alarm

The Flash Failure alarm is the only exception for clearing alarms. Flash failure can only be cleared by a reset (see “Resetting the Power Supply” on page 3–38) or by power cycling the unit.

To clear a triggered alarm, use one of the following methods:

• Turn the power supply Off and then On.

• Press and hold the Rotary knob/Enter button for 3 seconds.

• Press the reset key combination (Flash Fail ONLY). See “Resetting

the Power Supply” on page 3–38.

The SCPI command (s) for these instructions are:

[:]OUTPut[<channel>]:PROTection:CLEar

When an alarm is cleared by using this method, only the current

M370046-01 3-19

Local Operation

Clearing Automatic Alarms

Some alarms will clear automatically when the condition that caused the alarm is no longer present. When an alarm automatically clears, the output voltage and current displays will return to normal, but the ALARM LED will remain illuminated to indicate that an alarm has occurred. If an automatic alarm is triggered, the normal alarm clearing procedure still applies.

To clear the ALARM LED after an automatic alarm has cleared, use one of the following methods:

• Send the SCPI Clear Alarm command.

• Press the OUTPUT ON/OFF button to reenable the output. The ALARM LED will no longer be illuminated.

For example, if one of the fans in the XTR was temporarily blocked, causing a Fan alarm, then the blockage was cleared and the fans restarted, the alarm would clear. The output voltage and current displays would be in normal mode, but the ALARM LED would be illuminated. See “Front Panel ALARM LED” on page 3–20 for information on other events that affect the ALARM LED.

Alarms status is tracked in the SCPI status registers. For more details on how and where the alarms are tracked, see “Standard SCPI Register Structure” on page 5–34.

Front Panel ALARM LED

The Alarm LED will illuminate due to one or more of the following events occurring:

• OTP has been tripped.

• A fan has stopped.

• OVP has tripped.

• OCP has tripped.

• UVP has tripped

• Interlock is open circuit.

• AC power falls out of range.

• Foldback has tripped.

• Persistent storage checksum is wrong (Flash Fail alarm).

• Internal malfunction of power supply.

• Any alarm has tripped and been cleared automatically.

The alarm LED will remain illuminated until the alarm is manually cleared (see “Clearing Triggered and Manual Alarms” on page 3–19) or by turning the main output on if the alarm has automatically been cleared.

3-20 M370046-01

Alarm Masking

Alarms and Errors

It is possible to completely disable some alarms through the use of the alarm mask. If an alarm is masked then this masking will prevent it from registering in the SCPI conditions registers as well as not triggering the alarm. The alarms that can be masked are identified in Table 3-4 on page 3–18. Setting the bit position (1) of an alarm will result in the alarm being enabled. Clearing the bit position (0) of an alarm will result in the alarm being masked/disabled.

For Example: If you wanted to enable the OTP, Foldback and UVP alarms you would take the OTP value of 2 and add it to the foldback value of 256 and the UVP value of 1024 to get a mask of 1282. This is the value you would send with the SCPI command.

Control of the alarm mask is only available using the SCPI command.

The SCPI command (s) for these instructions are:

[:]SYSTem[<channel>]:PROTection:MASK

The mask command takes a single parameter made up of the sum of the values for the alarms that are to be masked. See Table 3-5 for the alarm values associated with each maskable alarm.

Table 3-5

Alarm Bit Position Value

Over Temperature Protection (OTP) 1 2

Fan 3 8

Foldback 8 256

External Shutdown 9 512

Under Voltage Protection (UVP) 10 1024

The SCPI command (s) for these instructions are:

[:]SYSTem[<channel>]:PROTection:MASK

M370046-01 3-21

Alarm Mask Bit Positions

Local Operation

Alarm Output Latching

When an alarm is triggered, the output will be disabled with the exception of the Fan alarm. When an alarm is cleared, the alarm output latch determines if the output should be re-enabled to the state before the alarm occurred or if the output should remain in the off state.

Where setting the bit position (1) of an alarm latch will result in output latching to the off state when the alarm is cleared and if cleared (0) output will be re-enabled to the state before the alarm triggered.

To define the values for the bit position you determine which alarms you want to latch. Read the value for this bit position from Table 3-6 and sum them together. The result is the alarm last mask. Which you should send with the SCPI command.

For Example: If you wanted to enable latching for OTP and Foldback you would take the OTP value of 2 and add it to the foldback value of 256 to get a mask of 258. This is the value you would send with the SCPI command.

The output latches are accessible through the SCPI command.

The SCPI command (s) for these instructions are:

[:]SYSTem[<channel>]:PROTection:LATCh

The latch command take a single decimal parameter made up of the sum of the values for the alarms to determine if they are to be latched in the off state on clearing. See Table 3-6 for the values associated with each latchable alarm.

Table 3-6

Alarm

AC Fail 0 1

Over Temperature Protection (OTP) 1 2

Foldback 8 256

3-22 M370046-01

Alarm Latch Bit Positions

Bit Position Value

Setting Foldback Mode

Foldback mode is used to disable the output when a transition is made between the operating modes. The power supply will turn off/disable the output and lock in foldback mode after a specified delay if the power supply transitions into CV mode or into CC mode, depending on the foldback mode settings. This feature is particularly useful for protecting current or voltage sensitive loads. Foldback can be set to trigger a switch when transitioning from CV to CC mode or from CC to CV mode.

To set the foldback protection and foldback delay time:

1. Turn the mode control knob to the FLD position or press the Rotary

knob/Enter button if the mode control knob is already at the FLD position.

Setting Foldback Mode

2. Select the type of crossover that will cause foldback to trigger by

using the Rotary knob/Enter button.

If the mode selected is CC or CV mode, the foldback delay timer will start on a transition into the selected mode. If the mode selected is none, foldback is not enabled.

3. Press the Rotary knob/Enter button when the desired mode has been

selected.

The FLD LED will illuminate and DELA will be displayed in the output voltage display.

4. Adjust the desired delay time using the Rotary knob/Enter button.

The range can be set from 0.50 seconds to a maximum of 50 seconds. The step size is in increments of 0.05 seconds when setting from 0.50 to 5 seconds and then in 1 second increments from 5 seconds to 50 seconds.

5. Once the desired foldback delay time has been selected, press the

Rotary knob/Enter button to commit the foldback delay setting.

To disable foldback protection:

1. Turn the mode control knob to the FLD position or press the Rotary

knob/Enter button if the control knob is already at the FLD position.

2. FLd is displayed on the output voltage display and the output current

display shows the current foldback trigger mode.

3. Turn the Rotary knob/Enter button until nonE is displayed in the

M370046-01 3-23

output current display.

Local Operation

4. Press the Rotary knob/Enter button to commit the setting once the desired value has been set.

5. The green FLD LED will turn off and the display will return to the normal display mode.

The SCPI command (s) for these instructions are:

[:]OUTPut[<channel>]:PROTection:FOLDback[:MODE]

[:]OUTPut[<channel>]:PROTection:FOLDback:LATCh

Important:

select is the same as the current operating mode, the foldback timer will begin counting immediately after the delay time has been set.

If you set foldback while the output is enabled and the trigger you

Resetting Activated Foldback Protection

To reset activated and latched foldback protection, press and hold the Rotary knob/Enter button for approximately 3 seconds.

The SCPI command (s) for these instructions are:

[:]OUTPut[<channel>]:PROTection:CLEar

3-24 M370046-01

Using Over Voltage Protection (OVP)

The OVP circuit protects the load in the event of an analog programming error, an incorrect voltage control adjustment, or a power supply failure. The OVP circuit monitors the output voltage at the output of the power supply and will disable the output whenever a preset voltage set point is exceeded. You can set the preset voltage trip point by using the mode control knob on the front panel or via one of the remote programming interfaces.

To prevent accidental tripping of the OVP while setting up, the firmware will prevent the OVP set point from being less that 105% of the voltage set point when in local set point control mode. When the XTR is in VAP mode for defining voltage set point the set point limitation will be based on the VAP input signal level. The user should note it is possible to trip OVP in this mode if the OVP is configured when the analog programming source is off.

When the user attempts to configure an OVP setpoint that is less than 105% of the voltage set point via the front panel the set point will stop allowing the value to decrement. If the user attempts to configure an OVP set point that is less than 105% of the voltage set point via SCPI a -221, "settings conflict error" will be pushed onto the error queue.

M370046-01 3-25

Local Operation

Defining the OVP Set Point

To define the OVP set point:

1. Turn the power supply On.

Ensure the voltage is lower than the desired set point.

2. Set the output to the desired voltage.

OVP can be set without setting desired output voltage first.

3. Turn the mode control knob to the PRT position.

Pro OUP is displayed.

4. Press the Rotary knob/Enter button.

5. Turn the Rotary knob/Enter button to set the upper limit protection.

See “Coarse and Fine Adjustment Modes” on page 3–3.

Important:

The OVP range is variable from V

+5% to V

SET

MAX

+25%.

6. Once the desired value has been set, press the Rotary knob/Enter button to commit the setting.

The SCPI command (s) for these instructions are:

[[:]SOURce[<channel>]]:VOLTage:PROTection[:OVERvoltage] [:LEVel]

If the output is between OVP

and –5%, an OVP warning message is

set

possible when in APG mode.

3-26 M370046-01

Using Under Voltage Protection (UVP)

Important:

of model voltage.

The UVP prevents voltage settings below a set value. The UVP lets you create a voltage window of operation when used in conjunction with the OVP setting. The UVP range is variable from 0 V to OVP

The UVP is a protection that becomes active after the output is enabled and a period of time has passed to allow the output to reach its set point value before the UVP protection begins monitoring. As with OVP if the voltage set point is determined by analog control (VAP) and the voltage strays to within 5% of the UVP set point then UVP Safe will trigger to warn the user that they are about to trigger the UVP alarm.

The period of time before the UVP monitoring is active after the output is enabled is determined by the rise-time delay for the model as listed in Table C-2, “Remote Operation” on page C–4 on the row called Up-prog Response Time, 0 - Vmax. Since the rise time is based on a purely resistive load the user should be aware that UVP triggering might be possible in capacitive or rectifier loads due to the rise time being longer. In these cases it is recommended that the user mask the UVP alarm until the rise time has elapsed and then unmask the alarm to allow UVP protection to be enabled during operation.

UVP will not be active for voltage set points that are less than 1%

–10%.

SET

M370046-01 3-27

Local Operation

Defining the UVP Set Point

To define the UVP set point:

1. Turn the power supply On.

2. Set the output to the desired voltage.

3. Turn the mode control knob to the PRT position.

PRo OUP is displayed.

4. Turn the Rotary knob/Enter button until PRo UUP is displayed.

5. Press the Rotary knob/Enter button to select the UVP for setting up.

6. Set up the lower limit protection using the Rotary knob/Enter button.

Important:

The UVP range is variable from 0 volts to OVP

7. Once the desired value has been set, press the Rotary knob/Enter button to commit the setting.

See “Coarse and Fine Adjustment Modes” on page 3–3.

The SCPI command (s) for these instructions are:

[[:]SOURce[<channel>]]:VOLTage:PROTection:UNDer[:LEVel]

Over Current Protection (OCP)

The OCP alarm is a firmware alarm that is only configurable using the SCPI interface. The OCP triggers if the output current exceeds the OCP set point. Because the OCP alarm is a firmware based alarm it has a latency before detection of the condition can occur. The user should be aware of this latency and take this into consideration when relying on OCP to protect a sensitive load. The typical period for detecting an OCP condition is 300 ms.

The SCPI command (s) for these instructions are:

[[:]SOURce[<channel>]]:CURRent:PROTection[:OVERcurrent] [:LEVel]

SET

–10%.

3-28 M370046-01

Using Over Temperature Protection Lock (OTP)

The OTP lock protects the power supply in the event of an over temperature alarm. This alarm could be caused by ventilation restriction or overheating due to fan failure.

Two modes are available:

• Auto recovery (OTP OFF) where the power supply turns on again

after cooling down.

• Latch mode (OTP ON) where you will need to reset the unit by

turning the front panel power switch to Off and then On again.

If the OTP is activated, the main output will turn off and PRO O7P (over temperature protection) will blink on the display. The OTP alarm is an alarm that will auto recover when the temperature falls back into normal bounds.

Defining the OTP Mode

To define the OTP lock:

1. Turn the mode control knob to the PRT position.

PrO OUP is displayed.

2. Turn the Rotary knob/Enter button until PRO O7P is displayed.

3. Press the Rotary knob/Enter button to display O7P ON or OFF.

4. Turn the Rotary knob/Enter button to change to On or Off.

5. Press the Rotary knob/Enter button.

The SCPI command (s) for these instructions are:

[:]SYSTem[<channel(s)>]:PROTection:LATCh

Resetting in Latch Mode

To reset the power supply if the OTP alarm is tripped and the OTP mode is set to On (latching enabled), press and hold the Rotary knob/Enter button for approximately 3 seconds.

The SCPI command (s) for these instructions are:

[:]OUTPut[<channel(s)>]:PROTection:CLEar

[:]SYSTem[<channel(s)>]:PROTection:LATCh

M370046-01 3-29

Local Operation

Using the External Shutdown Function

Use the external shutdown function to enable or disable the output of the power supply via a logic level signal. When the external shutdown is triggered, the power supply will display SD POL on the output voltage and current displays and the ALARM LED will illuminate. The external shutdown is useful for making adjustments to either the load or the power supply without shutting off the power supply or using the power supply as part of a larger test system in which digital or analog control is required.

Activating the External Shutdown Function

To activate the external shutdown function, use the AUX output supply provided on the Analog Programming Connector J3. This input has a user selectable polarity with logic low input from 0.0V to 1.2V and logic high from 2.0V to 15V. The control signal for this input must be capable of sinking 10mA minimum. This input is also compatible with the use of dry contacts, where a short is logic low and an open is logic high. The input lines of the shutdown circuit are fully optically isolated. See page C–5 for specifications.

Once the External Shutdown has been triggered, the display will blink the SD POL and the ALARM LED will be illuminated.

Controlling the External Shutdown Function

The external shutdown circuit accepts a voltage or dry contact control (high or low logic level) to enable or disable the power supply output. Make connections for the signals at the AUX Output and Isolated Analog Programming Connector on the rear panel. (See “AUX Output and Isolated Analog Programming (ISOL) Connector” on page 4–20 for more information.)

To activate the shutdown function:

◆ Connect the control signal source to the Shutdown pin (J3.12) on the Aux Output and Isolated Analog Programming Connector with the control circuit ground connected to Isolated Ground pin (J3.6).

The External Shutdown pin is pulled high internally (normally high). Therefore, if this feature is not used, the polarity should be set to 1 to avoid false triggering. (See “Defining the Polarity of the External Shutdown Signal” on page 3–31 for instructions.)

3-30 M370046-01

Using the External Shutdown Function

Defining the Polarity of the External Shutdown Signal

1. Turn the mode control knob to the PRT position or press the Rotary

knob/Enter button if the control knob is already at the PRT position.

PrO OUP is displayed on the output voltage display.

2. Turn the Rotary knob/Enter button until PrO SD is displayed.

3. Press the Rotary knob/Enter button to display SD 0 (shutdown on

logic 0) or SD1 (shutdown on logic 1).

4. Press the Rotary knob/Enter button to commit the desired polarity

setting.

For example: If you set the shutdown logic to 1 (SD1) and apply a logic high (greater than 1.2 Vdc) to pin J3.12 relative to pin J3.6 on the ISOL connector, the power supply will shut down. Conversely, if you set the shutdown logic to 0 (SD0), the power supply will only operate when you have a logic high (greater than 1.2 Vdc) to pin J3.2 relative to pin J3.6.

Important:

the shutdown polarity should be set to 0 if it is not being used.

The SCPI command (s) for these instructions are:

[:]OUTPut[<channel>]:POLarity

There is an internal pullup resistor inside the shutdown circuit so

M370046-01 3-31

Local Operation

Interlock Function

The Interlock function can be used to wire an external shutoff switch that can be used to enable or disable the power supply output. When the switch is closed the power supply will operate normally. If the switch is opened, the power supply will trigger the interlock alarm. The output will be disabled, the display will blink In Loc, and the ALARM LED will illuminate. This alarm will automatically clear when the switch closes again and the output will automatically be restored to its pre-alarm state (either enabled or disabled). The interlock function can be enabled or disabled using a SCPI command. Common applications include an emergency shutoff switch or a door switch.

Connect the switch between pins J3.14 and J3.15 on the AUX Output and Isolated Analog Programming Connector.

Defining the Interlock Mode

The Interlock mode is controlled via SCPI commands. There is no front panel access for enabling or disabling the Interlock functionality. See “Interlock Enable/Disable” on page 5–68.

The SCPI command for setting the Interlock mode to On and Off is:

[:]SENSe[<channel>]:PROTection:INTerlock[:STATe]

3-32 M370046-01

Power On Status Signal

Power On Status signal indicates a fault condition in the power supply. Power On Status signal is a TTL output signal at Pin J2.13 with reference to COM_ISOLATED (Pin J2.2 or Pin J2.6).

During normal operation, the Power On Status signal will be high. If the output is disabled for any reason, the Power On Status signal will go low.

The following conditions will set the Power On Status to a low level:

•AC fail

• Over Voltage protection (OVP)

• Under Voltage Protection (UVP)

• Over Current Protection (OCP)

• Over Temperature protection (OTP)

• Foldback protection

•Interlock

•Output Off

• Shutdown activated (rear panel shutdown).

• Internal hardware malfunction

•Fan failure

Hardware Malfunction Alarms

The power supply will turn off the output. An error message will be displayed in the event that:

• OVP trips

• Voltage deviation in CV mode reaches more than ±5% from the set

level.

• Current deviation in CC mode reaches more than ±5% from the set

level.

1.These two forms of hardware malfunction are only monitored in the corresponding APG mode.

M370046-01 3-33

Local Operation

Current Configuration Memory Settings

The power supply will save the unit settings at the time of power down. These settings will be loaded when the power is restored to the unit or the power supply is powered up again. Table 3-7 lists the settings that are saved and recalled on a power cycle event.

Table 3-7

Voltage Setpoint

Current Setpoint

Over Voltage Protection (OVP)

Under Voltage Protection (UVP)

Over Temperature Protection (OTP)

Autostart Output On/Off

Autostart Aux On/Off

Foldback Mode

Foldback Delay

Shutdown Logic

Voltage Analog Programming (VAP) Mode

Voltage Analog Programming (VAP) Level

Current Analog Programming (CAP) Mode

Current Analog Programming (CAP) Level

Remote Programming Interface

Local Lock

PSU (Power Supply) Address

Data Rate (BPS)

Alarm Latches

Front Panel Timeout

Power Cycle Saved/Recalled Settings

3-34 M370046-01

User Setting Memory Locations

There are three user setting memory locations available for storing frequently used configurations. These user setting memory locations help to facilitate multiple users of an XTR power supply who have different setups or when multiple loads are used that have different requirements. Table 3-8 lists the values that are stored in each user setting memory location.

User Setting Memory Locations

Table 3-8

Voltage Setpoint

Current Setpoint

Over Voltage Protection (OVP)

Over Temperature Protection (OTP)

Autostart Output On/Off

Autostart Aux On/Off

Foldback Mode

Foldback Delay

Shutdown Logic

Voltage Analog Programming (VAP) Mode

Voltage Analog Programming (VAP) Level

Current Analog Programming (CAP) Mode

Current Analog Programming (CAP) Level

Alarm Latches

Front Panel Timeout

User Accessible Saved/Recalled Settings

Saving User Setting Memory Locations

To save user setting memory locations:

1. Turn the mode control knob to the SAV position.

2. Turn the Rotary knob/Enter button to select a preset position from 1

3. Press the Rotary knob/Enter button.

M370046-01 3-35

SAUE is displayed on the output voltage display with a number indicating a preset position which is displayed on the output current display.

to 3.

SAuE done is displayed on the output voltage display.

Local Operation

4. The setting has now been saved to the selected user setting memory location.

The SCPI command (s) for these instructions are:

*SAV

[:]SYSTem[<channel>]:SAVE

Recalling User Setting Memory Locations

This feature recalls settings that were previously saved.

To load user setting memory locations:

1. Turn the mode control knob to the RCL position.

RCL is displayed on the output voltage display with a number indicating a preset position on the output current display.

2. Turn the Rotary knob/Enter button to select a preset position from 1 to 3.

3. Press the Rotary knob/Enter button.

rCL done is displayed on the output voltage display.

The settings in the selected user setting memory locations have now been applied to the power supply.

The SCPI command (s) for these instructions are:

*RCL

[:]SYSTem[<channel>]:RECall

Three user setting memory locations are available and one user setting memory location is saved automatically before AC power shutdown. This user setting memory location will be loaded after AC power is restored.

3-36 M370046-01

Local Lockout

Local lockout is a feature that allows the front panel to be locked so that accidental button presses are ignored. This feature is often used to lockout the front panel when you are controlling the power supply from a remote location. When in local lockout mode, the front panel will display LOCL Loc whenever a button is pressed or a knob is turned.

Enabling Local Lockout

To enable local lockout:

1. Turn the mode control knob to the PGM position or press the Rotary

knob/Enter button if the control knob is already at the PGM position.

The display will show rE in the output voltage display and the selected remote interface in the output current display.

2. Turn the Rotary knob/Enter button until the display shows LOCL

Loc.

3. Press the Rotary knob/Enter button.

4. Turn the Rotary knob/Enter button until the display shows LOCL On.

5. Press the Rotary knob/Enter button.

Local lockout has been enabled.

Local Lockout

The SCPI command (s) for these instructions are:

[:]SYSTem:REMote:STATe

Disabling Local Lockout

To disable local lockout:

1. Turn the mode control knob to the PGM position or press the Rotary

knob/Enter button if the control knob is already at the PGM position.

The display will show rE in the output voltage display and the selected remote interface in the output current display.

2. Turn the Rotary knob/Enter Button until the display shows LOCL

Off.

3. Press the Rotary knob/Enter button.

Local lockout has been disabled.

The SCPI command (s) for these instructions are:

[:]SYSTem[<channel(s)>]:REMote:STATe

M370046-01 3-37

Local Operation

Resetting the Power Supply

The reset is used to clear the parameters to the factory default values.

To perform a reset:

1. Turn the power supply to Off then On.

When the unit is powering on, 8888 8888 is displayed on the output voltage and current displays.

2. Press the key combination of OUTPUT ON/OFF Button and AUX ON/OFF button and hold continuously for 3 seconds in order to execute.

If the flash fail alarm triggers, it is also possible to reset the power supply.

3. Once a reset has been triggered, the output voltage display shows P5U CLr for 1 second.

The model number will be displayed for 1 second and then return to normal mode.

After executing a reset, the power supply’s settings are restored to the default settings but retain the calibration data. Table 3-9 lists the default settings.

Table 3-9

Parameter Setting

Address 1

Data rate (Kbps) 9.6

Communication mode RS-232

Vout setting 0 V

Iout setting 0 A

Output Off

AUX Out Off

Trigger Off

Ext. On/Off Polarity Negative

Auto start mode Off

AUX Auto start mode Off

OVP Maximum

UVP 0 V

OCP 110% of current model

3-38 M370046-01

Power Supply Default Settings

Resetting the Power Supply

Table 3-9

Parameter Setting

Foldback trigger None

Foldback delay 0.5 s

Current Share Mode MASTer

Alarm Output Latches 263 (0 × 107, all latches enabled)

Alarms Mask 2047 (0 × 7FF, all enabled)

Interlock Disabled

Voltage Analog Programming Off

Voltage APG Scale 10 V

Current Analog Programming Off

Current APG Scale 10 V

Power Supply Default Settings

To reset the power supply:

1. Turn the front panel power switch to the Off position.

2. Allow the unit to power down.

3. When the fans are off and the front panel displays are not illuminated,

turn the power switch to the On position.

4. Press and hold the OUTPUT ON/OFF and AUX ON/OFF buttons.

The front panel should display P5U S rS.

5. When the display reads P5u Clr, release the OUTPUT ON/OFF and

AUX ON/OFF buttons. After 1 second the model number will appear on the display for 1 second.

The power supply has been reset.

M370046-01 3-39

Local Operation

Using Multiple Power Supplies

WARNING: Shock hazard

There is a shock hazard at the load when using a power supply at an output of greater than 40V or a combined output of greater than 40V. To protect personnel against accidental contact with hazardous voltages created by a series connection, ensure that the load, including connections, has no live parts which are accessible. Also ensure that the insulation rating of the load wiring and circuitry is greater than or equal to the maximum or combined output voltage of the power supply.

CAUTION: Equipment damage

Do not connect power supplies from different manufacturers in parallel or in series.

CAUTION: Equipment damage

The remote programming inputs are internally referenced to the power supply's negative output. Do not connect remote programming ground lines to the power supply's positive output.

You can operate power supplies of the same model with the outputs in series to obtain increased load voltage or with the outputs in parallel to obtain increased current, also called current sharing. Split supply operation gives you two positive outputs, or a positive and a negative output. See Figure 3-5 on page 3–41. When using multiple supplies in series or parallel, they will not meet the single unit specifications in this Manual.

3-40 M370046-01

Power Supply

Using Multiple Power Supplies

Common

Load

Figure 3-5

Split Supply Operation

M370046-01 3-41

Local Operation

–

Configuring Multiple Supplies for Series Operation

A maximum of two power supplies of the same rating can be connected in series to increase the output voltage.

CAUTION: Equipment damage

When two power supplies are connected in series, they should be programmed to the same output voltage to prevent damage to the lower voltage supply at short circuit condition.

Connecting to the Load in Local Sensing Mode

Connect the negative (–) output terminal of one power supply to the positive (+) output terminal of the next power supply. See Figure 3-6 for a representation of series operation.

J1.2

+LS

J1.1

Power Supply

J1.5

-LS

J1.2

+LS

Power Supply

J1.5

-LS

Figure 3-6

J1.6

-S

J1.1

–

J1.6

-S

Series Operation

LOAD

3-42 M370046-01

Connecting to the Load in Remote Sensing Mode

Connect the negative (–) output terminal of one power supply to the positive (+) output terminal of the next power supply. The more positive supply’s positive sense line should connect to the positive terminal of the load (or distribution point). Its return sense line should connect to the connection between the two units at the same spot as the negative supply’s positive sense line. The return sense line of the negative supply should be connected to the return of the load. See Figure 3-7.

CAUTION: Equipment damage

Do not connect sense lines through relays.

Using Multiple Power Supplies

Figure 3-7

M370046-01 3-43

Load Connections in Remote Sensing Mode

Local Operation

Configuring Multiple Supplies for Current Sharing Operation (APG Method)

Up to four power supplies can be connected in parallel to increase the output current. One of the units will operate as the master unit and the remaining units will operate as slave units controlled by the master unit. The master unit uses the analog programming lines to set the output voltages and currents of the slave units to match its output.

In remote digital operation, only the master unit can be programmed remotely while the slave units that are connected remotely will only provide voltage, current and status readback information.

In APG current sharing topologies, only the master unit can be programmed using any of the input methods (front panel, remote digital, or analog programming control). The slave unit(s) voltage and current output(s) are determined by the master unit through the REF_I input to each slave unit. The readback using any of the monitoring methods (front panel display, user monitor lines or SCPI measure commands) of each unit (master or slave) will provide individual unit status, not system status.

Setting up the Master Unit

Set the output voltage of the master unit to the desired voltage. Program the current set point of the master unit to the desired load current set point divided by the number of parallel units. During operation, the master unit operates in Constant Voltage mode, regulating the load voltage at the programmed output voltage. Send the Current share command.

The SCPI command (s) for these instructions are:

[[:]SOURce[<channel>]]:COMBine:CSHare[:MODE]

Setting up the Slave Units

The output voltage and current of the slave units should be programmed to maximum value. During parallel operation, the slave units operate as a controlled current source following the master unit’s output current.

All slave units must be configured with the SCPI command to enable current sharing.

The SCPI command (s) for these instructions are:

[[:]SOURce[<channel>]]:COMBine:CSHare[:MODE]

Important:

interface slave described in chapter 5.

The slave unit discussed here is not the same as the remote

3-44 M370046-01

Setting Over Voltage Protection (OVP)

The master unit’s OVP should be programmed to the desired OVP level. The OVP of the slave units should be programmed to a higher value than the master OVP. When the master unit shuts down, it will program the outputs of the slave units to zero volts. If a slave unit shuts down, only that unit would shut down and the remaining slave units would supply all the load current if possible.

Setting Foldback Protection

Foldback protection is only available on the master units as the slaves operate in constant current mode. They should never crossover into constant voltage mode. If foldback is triggered on the master unit, when its output shuts down, it will program the slave unit’s output to zero volts.

Using Multiple Power Supplies

M370046-01 3-45

Local Operation

Connecting to the Load in Local Sensing Mode (Parallel Control Method)

Connect the power supplies in parallel to obtain a single output supply with a higher output current set point. Set all of the outputs to the same voltage before connecting the positive (+) and negative (–) terminals in parallel. The total current available is the sum of the maximum currents of each power supply.

Figure 3-8

3-46 M370046-01

Load Connections in Local Sensing Mode

Using Multiple Power Supplies

Connecting to the Load in Remote Sensing Mode (Parallel Control Method)

Figure 3-9

M370046-01 3-47

Load Connections in Remote Sensing Mode (Parallel Control Method)

3-48

Analog

Programming (APG) and Isolated Analog Programming (ISOL)

Chapter 4, Analog Programming (APG) and Isolated Analog Programming (ISOL), provides information and procedures for analog and isolated analog programming of the power supply.

Analog Programming (APG) and Isolated Analog Programming (ISOL)

Introduction

The rear panel connectors J1 and J3 provide an option to control and monitor the output of the power supply with analog signals. Connector J1 provides a non-isolated analog interface where all signals are referenced to the negative output terminal of the power supply. Connector J3 is an isolated interface and also provides an isolated auxiliary voltage output to aid analog programming.

Analog Programming (APG) of Output Voltage and Output Current

Analog programming allows control of the power supply’s output voltage, output current or both to be controlled from analog input sources. As the programming source is varied within the configured analog programming range (2–10 volts/ varies proportionally over its output range. For example, if you set the programming scale to 10 V voltage source and apply 5 V to the programming pins, the power supply will be programmed to 50% of the output capability for your power supply.

While analog programming mode is configured, you will not be able to make adjustments to the set points from the front panel or through the remote interfaces.

kΩ max), the power supply’s output

The front panel will display AnPr in the output current display when the mode control knob is turned to VOL or CUR positions for the parameter(s) that are configured to be controlled by analog programming. If an adjustment of a parameter controlled by APG is attempted using a SCPI command, a “-221 Settings Conflict” error will be pushed onto the error queue.

Using analog programming requires that you make connections to the Isolated Analog Programming Connector or Analog Programming Connector on the rear panel of the power supply. Depending on your model, see “Rear Panel Connectors” on page 1–6 or “” on page 1–7.

4-2 M370046-01

Remote Programming Options

Analog Monitor Signals

There are four monitor lines for analog programming the pin name and the related APG mode, which are listed in Table 4-1. All of these lines are provided to give analog feedback. The output from these monitor lines is a value scaled to the Analog Programming level set for the corresponding analog programming type. For example, the voltage monitor and isolated voltage monitor lines are both scaled to the analog programming level that is set in the VAP mode.

Introduction

Table 4-1

Related APG Mode Reference Line

Non-Isolated Voltage Analog Programming VOL_MON J1.13

Isolated Voltage Analog Programming IS_MON_VOL J3.5

Non-Isolated Current Analog Programming CUR_MON J1.14

Isolated Current Analog Programming IS_MON_CUR J3.10

Important:

supply even when the unit is not set to operate in analog programming mode.

Important:

programming modes are used for the respective voltage and current control. If local (front panel) control is used or non-isolated APG is used, these values will be inaccurate and should not be used for monitoring. Conversely, if isolated APG is used, the non-isolated monitor lines will be inaccurate.

Monitor Lines

Connector

Name

Analog control monitor lines will reflect the output of the power

Isolated monitor lines are only valid when isolated analog

M370046-01 4-3

Analog Programming (APG) and Isolated Analog Programming (ISOL)

Auxiliary Outputs

The auxiliary outputs are an additional isolated source. The auxiliary output has two outputs: +5 V output on J3.9 and a +15 V output on J3.11. The auxiliary output operates independently of the main output. It is enabled or disabled from the front panel by pressing the AUX ON/OFF button. When the Aux output is enabled, the AUX ON/OFF button is illuminated. Like the main output of the power supply, the Aux also has the ability to Autostart at power up. See “Output Auto Start Mode (Auto Restart)” on page 3–16 and “Auxiliary Auto Start Mode” on page 3–17 for details on controlling this feature.

Table 4-2 provides a summary of the options available for programming output voltage and current set point using an analog source.

Table 4-2

Control of… Programming Scale

Output voltage 2–10 V Voltage source (adjustable) See page 4–10.

Current set point 2–10 V Voltage source (adjustable) See page 4–12.

Output voltage 2–10 kΩ Resistive source (adjustable) See page 4–15.

Current set point 2–10 kΩ Resistive source (adjustable) See page 4–17.

1.The resolution can be adjusted in increments of 0.1 volts.

Remote Programming Options

For more info…

4-4 M370046-01

Analog Programming (APG) Connector J1

The APG connector is an 18-pin connector. See Figure 4-1.

The APG connector provides access to the following functions:

• Sense control

• Analog programming and monitoring.

Introduction

+SNS

+LS

-LS

-SNS

COM

VOL_PR

CUR_PR

Figure 4-1

Table 4-3

Jumper

123

APG Connector Terminals

APG Pins and Functions J1

Jumper

Pin Reference Function

J1.1 +SNS Positive (+) Sense

J1.2 +LS Positive (+)

Local Sense

11 12 13 14

910

15 16 17

}

Jumper. Factory default condition.

REF_I

CSH

EXT_CC_CV

CUR_MON

VOL_MON

CUR_RES_PR

VOL_RES_PR

J1.3 –NC

J1.4 –NC

J1.5 –LS Negative (–)

J1.6 –SNS Negative (–)

J1.7 COM Analog Common Same as power supply negative sense (–SNS)

J1.8 COM Analog Common Same as power supply negative sense (–SNS)

M370046-01 4-5

Local Sense

Sense

Jumper. Factory default condition.

}

Analog Programming (APG) and Isolated Analog Programming (ISOL)

Table 4-3

APG Pins and Functions J1

Pin Reference Function

J1.9 VOL_PR Analog Voltage Programming Input

J1.10 CUR_PR Analog Current Programming Input

J1.11 VOL_RES_PR Voltage Resistive Programming Input

J1.12 CUR_RES_PR Current Resistive Programming Input

J1.13

VOL_MON

Voltage Monitor. The scale of this output is set by the APG voltage input range selected (see Important note below).

J1.14

CUR_MON

Current Monitor. The scale of this output is set by the APG current input range selected (see Important note below).

J1.15 EXT_CC_CV External CC/CV. Indicates the state of the operate mode. When

in CV mode, logic high is output and when in CC mode, logic low is output. Logic is TTL/CMOS compatible.

J1.16 CSH Current Share. Used to hook up units for current sharing. Output

from master unit. Slave units should be left open.

J1.17 REF_I Current Reference Input. Slave input from current share output

on the master unit.

J1.18 NC

1.Important: Non-isolated monitor lines are only valid in local control, digital remote and nonisolated analog programming modes for the respective voltage and current control. If isolated analog programming is used, the isolated monitor lines should be used as the non-isolated monitoring lines will not accurately reflect the output state of the power supply.

4-6 M370046-01

Making Control Connections

CAUTION: Equipment damage

Before making connections from external circuits to the Analog Programming Connector, turn the front panel power switch to Off and wait until the front panel displays are not illuminated.

CAUTION: Equipment damage

Program/monitor signal and return are internally connected to the power supply negative output (-S). Do not attempt to bias these away from that potential.

To connect the output wires to the APG and DC output connector:

1. Insert a 3/32 inch slot-head screwdriver into the orange-colored box

of the connector until the end of the spring is reached. See Figure 4-2.

2. Hold the connector open and insert the applicable output wire.

3. Remove the screwdriver.

Introduction

Figure 4-2

Figure 4-3

M370046-01 4-7

Inserting Screwdriver into Spring Terminal Block

APG and DC Output Connector

Analog Programming (APG) and Isolated Analog Programming (ISOL)

Wiring

WARNING: Shock hazard

There is a potential shock hazard at the output when using a power supply with a rated output greater than 60 V. Use load wiring with a minimum insulation rating equivalent to the maximum output voltage of the power supply. For example, select TEW, 105 °C, 600 V wiring for use with a 600 V, 1.4 A power supply.

For most connectors and jumpers, use any suitable wire such as 20 to 26 AWG stranded wire. For lowest noise performance, use shielded twisted pair wiring of 20 to 26 AWG of the shortest length possible. Ground the shield to pin J1.7 (analog common) on the Analog Programming Connector or to the chassis via one of the Analog Programming Connector screws.

4-8 M370046-01

Xantrex XTR 40-21, XTR 100-8.5, XTR 150-5.6, XTR 300-2.8, XTR 600-1.4 Operating Manual

Specifications and Main Features

Frequently Asked Questions

User Manual