GW Instek PEL-2002, PEL-2000 Series, PEL-2004 User Manual

Programmable DC Electronic
Load

PEL-2000 Series

USER MANUAL

GW INSTEK PART NO. 82EL-20040MA1

ISO-9001 CERTIFIED MANUFACTURER

March 2010

This manual contains proprietary information, which is protected by
copyright. All rights are reserved. No part of this manual may be
photocopied, reproduced or translated to another language without
prior written consent of the Good Will company.

The information in this manual was correct at the time of printing.
However, Good Will continues to improve products and reserves the
right to change specification, equipment, and maintenance
procedures at any time without notice.

Good Will Instrument Co., Ltd.
No. 7-1, Jhongsing Rd., Tucheng City, Taipei County 236, Taiwan.

Table of Contents

3

Table of Contents

SAFETY INSTRUCTIONS ................................................... 5

GETTING STARTED ......................................................... 10

Main Features ...................................... 12

Series Overview ................................... 13

Package Contents and Accessories....... 15

Measurement Overview ....................... 16

Front Panel Overview ........................... 17

Display Overview – Mainframe ............ 22

Rear Panel Overview ............................ 25

Front Panel Overview – Load Module ... 28
LED Display Overview – Load Module .. 32

Installation .......................................... 35

Load Connections ................................ 43

Frame Link Connection ........................ 54

Channel Control Connection ................ 56

Go/NoGo Connection .......................... 59

OPERATING DESCRIPTION ............................................. 60

Operating Mode Description ............... 61

Run Program ........................................ 71

Sequence ............................................. 74

Parallel Dynamic Loading .................... 78

Configurations Description .................. 79

Interface and File System ..................... 89

TUTORIALS ..................................................................... 96

Local loads .......................................... 97

Single Channel Load ............................ 99

Programming ..................................... 101

Sequences .......................................... 103

PEL-2000 Series User Manual

4

Frame Link ......................................... 104

Channel Control ................................. 106

General Configuration Options .......... 108

OPERATION ................................................................... 109

Local Mode Operation ....................... 112

Mainframe Basic Operation ............... 119

Channel Configuration ....................... 160

Mainframe Configuration ................... 180

Interface Configuration (settings) ...... 195

Save / Recall ...................................... 201

INTERFACE .................................................................... 232

Interface Configuration ...................... 233

FAQ ............................................................................... 241

APPENDIX ..................................................................... 242

Fuse Replacement .............................. 242

Battery Replacement .......................... 243

Firmware Update ............................... 244

Calibration ......................................... 245

Range Chart ....................................... 246

Default Settings ................................. 251

Specifications .................................... 253

Dimensions ....................................... 261

EC Declaration of Conformity ............. 263

INDEX ............................................................................ 264

SAFETY INSTRUCTIONS

5

SAFETY INSTRUCTIONS

This chapter contains important safety
instructions that you must follow when operating
the PEL-2002/PEL-2004, and when keeping it in
storage. Read the following before operating the
PEL-2002/2004 to ensure your safety and to keep
the PEL-2000 series in the best possible condition.

Safety Symbols

These safety symbols may appear in this manual or on the PEL­2002/2004.

WARNING

Warning: Identifies conditions or practices that
could result in injury or loss of life.

CAUTION

Caution: Identifies conditions or practices that
could result in damage to THE PEL-2002/2004 or
to other properties.

DANGER High Voltage

Attention Refer to the Manual

Protective Conductor Terminal

Earth (ground) Terminal

PEL-2000 Series User Manual

6

Do not dispose electronic equipment as unsorted
municipal waste. Please use a separate collection
facility or contact the supplier from which this
instrument was purchased.

Safety Guidelines

General
Guideline

CAUTION

 Do not place any heavy object on the PEL-

2002/2004.

 Avoid severe impact or rough handling that

leads to damaging the PEL-2002/2004.

 Do not discharge static electricity to the PEL-

2002/2004.

 Do not block or obstruct the cooling fan vent

openings.

 Do not perform measurement at circuits directly

connected to Mains (Note below).

 Do not disassemble the PEL-2002/2004 unless

you are qualified as service personnel.

 The equipment is not for measurements

performed for CAT II, III and IV.

(Measurement categories) EN 61010-1:2001 specifies the
measurement categories and their requirements as follows. The
PEL-2002/2004 falls under category I.

 Measurement category IV is for measurement performed at the

source of low-voltage installation.

 Measurement category III is for measurement performed in the

building installation.

 Measurement category II is for measurement performed on the

circuits directly connected to the low voltage installation.

 Measurement category I is for measurements performed on

circuits not directly connected to Mains.

SAFETY INSTRUCTIONS

7

Power Supply

WARNING

 AC Input voltage: 115V/230V switchable,

50/60Hz

 The power supply voltage should not fluctuate

more than 15%.

 Connect the protective grounding conductor of

the AC power cord to an earth ground, to avoid
electrical shock.

Fuse

WARNING

 Fuse type: T3.15A/250V

 Make sure the correct type of fuse is installed

before power up.

 To avoid fire, only replace the fuse with the

specified type and rating.

 Disconnect the power cord before fuse

replacement.

 Make sure the cause of a fuse blowout is fixed

before replacing the fuse.

Battery

WARNING

 Battery type: CR17345 (See page 243).

 When replacing the battery ensure that the

correct make and model are used.

Cleaning the
PEL-2000

 Disconnect the power cord before cleaning.

 Use a soft cloth dampened in a solution of mild

detergent and water. Do not spray any liquid.

 Do not use chemicals or cleaners containing

harsh material such as benzene, toluene, xylene,
and acetone.

PEL-2000 Series User Manual

8

Operation
Environment

 Location: Indoor, no direct sunlight, dust free,

almost non-conductive pollution (Note below)

 Temperature: 0°C to 40°C

 Altitude: Up to 2000m

 Transient Overvoltage on the main supply is

2500V.

(Pollution Degree) EN 61010-1:2001 specifies the pollution degrees
and their requirements as follows. THE PEL-2002/2004 falls under
degree 2.

Pollution refers to “addition of foreign matter, solid, liquid, or
gaseous (ionized gases), that may produce a reduction of dielectric
strength or surface resistivity”.

 Pollution degree 1: No pollution or only dry, non-conductive

pollution occurs. The pollution has no influence.

 Pollution degree 2: Normally only non-conductive pollution

occurs. Occasionally, however, a temporary conductivity caused
by condensation must be expected.

 Pollution degree 3: Conductive pollution occurs, or dry, non-

conductive pollution occurs which becomes conductive due to
condensation which is expected. In such conditions, equipment
is normally protected against exposure to direct sunlight,
precipitation, and full wind pressure, but neither temperature
nor humidity is controlled.

Storage
environment

 Location: Indoor

 Relative Humidity: < 80%

 Temperature: −10°C to 70°C

Disposal

Do not dispose this instrument as unsorted
municipal waste. Please use a separate collection
facility or contact the supplier from which this
instrument was purchased. Please make sure
discarded electrical waste is properly recycled to
reduce environmental impact.

SAFETY INSTRUCTIONS

9

Power cord for the United Kingdom

When using the PEL-2002/2004 in the United Kingdom, make sure
the power cord meets the following safety instructions.

NOTE: This lead/appliance must only be wired by competent persons

WARNING: THIS APPLIANCE MUST BE EARTHED

IMPORTANT: The wires in this lead are coloured in accordance with the
following code:

Green/ Yellow: Earth

Blue: Neutral

Brown: Live (Phase)

As the colours of the wires in main leads may not correspond with the coloured
marking identified in your plug/appliance, proceed as follows:

The wire which is coloured Green & Yellow must be connected to the Earth
terminal marked with either the letter E, the earth symbol

or coloured

Green/Green & Yellow.

The wire which is coloured Blue must be connected to the terminal which is
marked with the letter N or coloured Blue or Black.

The wire which is coloured Brown must be connected to the terminal marked
with the letter L or P or coloured Brown or Red.

If in doubt, consult the instructions provided with the equipment or contact the
supplier.

This cable/appliance should be protected by a suitably rated and approved
HBC mains fuse: refer to the rating information on the equipment and/or user
instructions for details. As a guide, a cable of 0.75mm2 should be protected by a
3A or 5A fuse. Larger conductors would normally require 13A types,
depending on the connection method used.

Any exposed wiring from a cable, plug or connection that is engaged in a live
socket is extremely hazardous. If a cable or plug is deemed hazardous, turn off
the mains power and remove the cable, any fuses and fuse assemblies. All
hazardous wiring must be immediately destroyed and replaced in accordance
to the above standard.

PEL-2000 Series User Manual

10

GETTING STARTED

This chapter describes the features and functions of the
PEL-2002/2004, including the front and rear panel
appearance, panel installation and connection types. Use
the Tutorial section for quick access to step by step
instructions on the main functions.

Main Features ................................................................. 12

Series Overview ............................................................... 13

Package Contents and Accessories .................................. 15

Measurement Overview ................................................... 16

Front Panel Overview ...................................................... 17

Display Overview – Mainframe ........................................ 22

GETTING STARTED

11

Rear Panel Overview ........................................................ 25

Front Panel Overview – Load Module ............................... 28

LED Display Overview – Load Module ............................. 32

Installation ..................................................................... 35

Load Module Installation ..................... 35

GPIB Installation ................................. 38

Rack Mount Installation ....................... 39

Channel Number .................................. 40

Power Up & Self Test ........................... 41

Load Connections ........................................................... 43

Precautions and Procedures ................ 43

Remote (Sense) Connection ................. 48

Single Load Connections ...................... 50

Parallel Load Connections.................... 52

Frame Link Connection .................................................... 54

Channel Control Connection ............................................ 56

Go/NoGo Connection ..................................................... 59

PEL-2000 Series User Manual

12

Main Features

Description

The PEL-2002 and 2004 are multichannel
programmable DC electronic load mainframes.
The PEL-2002 mainframe is able to hold 2 load
modules, whilst the PEL-2004 is able to hold 4. The
flexible module configuration allows the
mainframes to either sink multiple loads
independently or large loads when used in
parallel.

The PEL-2000 series support three operation
modes: constant current (CC), constant voltage
(CV and CV+CC) and constant resistance (CR).
Constant current and constant resistance mode can
operate in either static or dynamic mode.

Feature Overview

 Flexible operation with removable load modules

 Multiple independent isolated channels

 High performance, up to 5 digit resolution

 High slew rate enabling a high response speed

 High capacity when frame linked

 Different load module types can be used in the

same mainframe

 Supports rack mount installation (PEL-2004)

 Supports frame link connections, with up to 4

slave units

 Color LCD display

 120 different sets of programmable sequences

 Accurate load simulation using Sequences

 4 panel setups

 USB flash drive support

GETTING STARTED

13

Interface

 USB

 RS-232C

 GPIB (optional)

Series Overview

The PEL-2000 series comprises of two different Mainframes: the PEL­2002 and the PEL-2004. The Mainframes differ by the number of load
modules that can be accommodated. The PEL-2002 has two load
module slots whilst the PEL-2004 has 4. There are 4 different load
module models, the PEL-2020, PEL-2030, PEL-2040 and PEL-2041.

PEL-2040 PEL-2041PEL-2020 PEL-2030

PEL-2020

DC Electronic Load

L
R

20A/ 80V, 100W

20A/ 80V, 100W

PEL-2030

DC Electronic Load

5A/ 80V, 30W

40A/ 80V, 250W

L
R

PEL-2041

DC Electronic Load

10A/ 500V, 350W

PEL-2040

DC Electronic Load

70A/ 80V, 350W

DC ElectronicLoad

PEL-2004

LOCAL UTILITY

CAL.

F5F4F3F2

ON/
OFF

SHIFT

PRESET

ENTER

F1

FILEFUNC

LOAD

9

CHAN

87

3

CLEAR

2

1

0

456

HELP

P0 LOCK

P3P1 P2

P6P4 P5

P9P7 P8

A/B

DYNA.

STATIC/

SHORT

DISPLAY

LOAD

V sense

500VDC

MAX

MAX

500VDC80VDC

MAX

MAX

80VDC

V sense

LOAD

DISPLAY

SHORT

STATIC/
DYNA.

A/B

R

80VDC

MAXMAX

80VDC

L

MAX
80VDC

MAX

80VDC

R

V senseV sense

L

LOAD

DISPLAY

SHORT

STATIC/
DYNA.

R/LR/L

DYNA.

STATIC/

SHORT

DISPLAY

LOAD

L

V sense V sense

R

80VDC

MAX

80VDC

MAX

L

80VDC

MAX MAX

80VD C

R

PEL-2000 Series User Manual

14

PEL-2020 PEL-2040

DC Electronic Load

PEL-2002

PEL-2040

DC Electronic Load

70A/ 80V, 350W

PEL-2020

DC Electronic Load

L

R

20A/ 80V, 100W

20A/ 80V, 100W

P8P7 P9

P5P4 P6

P2P1 P3

LOCKP0

HELP

654

0

12

CLEAR

3

78

CHAN

9

LOAD

FUNC FILE

F1

ENTER

PRESET

SHIFT

OFF

ON/

F2 F3 F4 F5

CAL.

UTILITYLOCAL

80VDC

MAX

MAX

80VDC

Vsense

LOAD

DISPLAY

SHORT

STATIC/

DYNA.

A/BR/L

DYNA.

STATIC/

SHORT

DISPLAY

LOAD

L

Vsense Vsense

R

80VDC

MAX

80VDC

MAX

L

80VDC

MAX MAX

80VDC

R

The 4 different load module models each differ in the amount of current,
voltage and power and the amount of channels that the load module
can accommodate. The procedures in this manual will be load module
model independent unless specifically stated. Below is a table showing
the basic differences between each load module model. For detailed
specifications, please see page 253.

Load Module Channels

Power (W)

CH L/R

Current (A)

Range

Low/High

Voltage (V)

PEL-2020

(100Wx2) 2 100/100 2/20 1-80

PEL-2030 (30/250W)

2 30/250 5/4/40 1-80

PEL-2040 1 350 7/70 1-80

PEL-2041 1 350 1/10 2.5-500

GETTING STARTED

15

Package Contents and Accessories

The PEL-2000 electronic load generator has a number of standard
and optional accessories that can be ordered. For more information
please visit the GW Instek website at www.gwinstek.com

or

consult your authorized distributor for details.

Standard
Accessories

Description

Power Cable Mains power cable (region dependent)

User Manual PEL-2000 Series Electronic DC load User Manual

(region dependent)

GTL-120 Load cables 2X red, 2X black (per load module)

GTL-121 Remote sense cables , 1X red, 1X black (per load

module)

Options Description

PEL-2020

PEL-2030

PEL-2040

PEL-2041

Load Module

PEL-001 GPIB interface (Factory installed)

Optional
Accessories

Description

PEL-002 PEL-2000 Rack Mount kit (handle only)

GTL-232 RS-232C

GTL-246 USB

GTL-248 GPIB cable

GTL-249 Frame link

PEL-2000 Series User Manual

16

Measurement Overview

The PEL-2000 series has a number of different operating modes that
are completely configurable. All the modes have customizable
Go/NoGo limits, range limits, timers, slew rates, alarms and
protection limits. To make tests, Programs and Sequences can be
created.

Function

Description

Constant Current
Mode (CC)

In constant current mode, the PEL-2002/2004 will
sink a constant amount of current, regardless of
the voltage.

Constant Voltage
Mode (CV)

Under constant voltage mode, the voltage remains
unchanged, regardless of the current.

Constant
Resistance Mode
(CR)

In constant resistance mode, the resistance load
will remain unchanged as the voltage and current
remain proportional.

Programmable
Sequences
(Prog.)

The PEL 2000 series supports programming
sequences. With up to 120 different memory
settings in 12 programs with 10 sequences.

Sequences (Seq.)

Used to create load profiles to accurately simulate
a load. Sequences can be created for each channel.

GETTING STARTED

17

Front Panel Overview

DC Electronic Load

PEL-2002

LOCAL

CAL.

F5F4F3F2

ON /
OFF

SHIFTPRESET

ENTER

F1

FILEFUNC

LOAD

9

CHAN

87

3

CLEAR

21

0

456

P0 LOCK

P3P1 P2

P6P4 P5

P9P7 P8

UTILITY

HELP

LCD display

Function keys

System Keys

Number Pad

Operation

keys

PowerUSB input

Selector

Knob

LCD display

320 by 240, TFT LCD display.

Function keys

Assigned to the menu functions on
the bottom of the display.

PEL-2000 Series User Manual

18

System Keys

CHAN/LOCAL is used to select
the load channel. Combined with
the shift key, Local is used to
activate/deactivate local control
(during remote control via the
interface or frame link
connections).

Brings up the
Channel Menu.

Used to activate
local control mode
during remote
control via the
interface

Used to access the Program or
Sequence menu.

Used to access the File menu.

Brings up the Help menu and
utility menu.

Provides help for
the last function
/key pressed.

Activates the
Utility Menu.

GETTING STARTED

19

Number pad

Enter numerical values, or to
save/recall presets (P0-P9).

Number values.

Preset numbers P0­P9.

Decimal point and Calibration key

Decimal point.

Activate calibration
mode.

Note

Please note, calibration mode is not supported.
Please see your distributor for calibration needs.

CLEAR

LOCK

Clears current values. Alternative
function locks the keys and the
Selector knob.

CLEAR

LOCK

Clears the current
value.

Locks all the keys
and Selector knob.

USB Input

USB flash memory slot.

PEL-2000 Series User Manual

20

Selector Knob

Used to select operations and to
increase/decrease values.

When turned left or
right moves the
cursor in menus or
changes the selected
item or value.

When pushed
down, acts as the
Enter key.

Operation Keys

Saves and recalls preset settings
and values.

When pressed in combination with
the number pad, Presets P0-P9 can
be recalled or saved.

Inactive

PRESET

Active. Used in
combination with
the number pad
and/or shift key.

Press to recall a
channel preset

Hold to save a
channel preset

Press to recall all
channel presets.

Hold to save all
channel presets.

GETTING STARTED

21

The shift key is used to access
alternate functions assigned to
select keys

Inactive

Active. When active
the shift key can be
used to access the
Local and Utility
menus.

Confirms selections.

Turns the current load/channel on
or off

Load is currently
off. (unlit)

Load is currently on.
(orange light)

Power

Turns the unit on or into standby
mode.

Standby mode.

On.

PEL-2000 Series User Manual

22

Display Overview – Mainframe

Mainframe Status
Panel

The Mainframe Status Panel displays the status of
the Mainframe interface, programs and alarm
status.

Frame Link
Status

FRS

FRM

Indicates Frame Link is
turned on and that the
mainframe is set as either
a master (FRM) or slave
(FRS) unit.

GETTING STARTED

23

Load Type

SEQ

PROG

LOAD
LOAD

PROG

SEQ

The Load Type Icon
indicates if a Sequence
(SEQ) or Program
(PROG) is turned on. If
not then LOAD is
displayed as default.
When any Load type is
running, their icon will
turn orange.

Interface Status

USB

GPIB

RS232

The interface status icon
displays which interface
type is set.

Current
Operation
Channel Status
Panel

The Current Operation Channel Status panel
generally displays the status of the current
channel.

Channel *CH1~

*CH8

Displays the current
channel.
An asterisk * denotes
independent mode for
the channel.

PEL-2000 Series User Manual

24

Mode CC

CR
CV

Displays the current
mode.

Static /
Dynamic

Displays whether the channel is in
Static or Dynamic mode.

Range High

Low

Displays High or Low
range.

Go/NoGo SPEC If Go/NoGo is turned

on, SPEC will be
displayed.

Response
Speed

Slow
Fast

In CV mode the response
speed will be shown,
Slow or Fast.

Channel
Control

EXT When Channel Control is

set to External, EXT will
be displayed.

Menu

Main
Conf
s_edit
File
s_loop

Shows the current menu.
= Chan menu
= ChanConfigure menu
= ChanSeq.Edit menu
= File menu
= ChanSeq.EditLoop
menu

Date and Time

The date is displayed as
Month/Day/Year and the time is
set as a 24-hour time notation.

Main Screen

Main display screen

Menu Icons

F1~F5

Each Menu Icon is controlled by
the F1~F5 function keys directly
below.

GETTING STARTED

25

Rear Panel Overview

PEL-2004

PEL-2002

GROUNDING CONDUCTOR MUST BE CONNECTED TO GROUND.

NO OPERATOR SERVICEABLE COMPONENTS INSIDE.

FOR CONTINUED FIRE PROTECTION. REPLACE FUSE ONLY WITH

250V FUSE OF THE SPECIFIED TYPE AND RATING.

DO NOT REMOVE COVERS. REFER SERVICING TO QUALIFIED PERSONNEL.

TO AVOID ELECTRIC SHOCK THE POWER CORD PRO TECTIVE

WARNING

AS SPECIFIED

FUSE RATING

230V

115V

REPLACE FUSE

T 3.15A
250V

AC

120 VA MAX

50/60 Hz

BEFORE REPLACING FUSE

DISCONNECT POWER CORD

RS232C

GPIB

GO / NG OUTPUT

FRAME CONT

1

2

SER. NO. LB

CH CONT 41CH CONT 31CH CONT 21CH CONT 1

1

10.0 mm

STRIP GAUGE

AWG 24

Power switch,
Power Socket, Fuse

Channel
Control, 1~4

Go/NoGo

Output

GPIB

RS232C

USB-B

terminal

USB-A

terminal

Frame Control 1,2

Go/NoGo
Output

The Go/NoGo Output
terminal outputs a pass
(high)/fail (low) voltage for
each channel.

See page 239, 59 for details.

PEL-2000 Series User Manual

26

RS232 port/
GPIB port

The RS232 and GPIB port is
used for remote control
connections.

RS-232C: DB-9 pin male

GPIB: 24-pin female

See pages 233, 234 for remote
control details.

USB-A(host)/
USB-B (device)
port

The USB-B (device) port, like
the RS232/GPIB port is used
for remote control. Like the
front panel, the USB-A port is
used for data storage.

See page 89 for interface
details.

Frame Control
Port

The Frame Control port is
used for Frame Link
connections. Mainframes are
daisy-chained together. There
are two Frame control ports.

1: Slave
2: Master

Connection type: MIL 20-pin
connector.

For details about frame link
connections see page 54, 236.

Power Switch

External Power Switch

GETTING STARTED

27

Power Socket/
Fuse

The power supply socket
accepts the AC mains Voltage.
The fuse holder is located
below the power socket.

Power: 50/60 Hz (180 VA)

Fuse: T3.15A/250V

For fuse replacement details
see page 242.

Channel
Control port
(1~8)

Each channel has a dedicated
Channel control port to
enable external monitoring
and control. The channel
control port has 6 wire sockets
that are screw-less and self
clamping.

Required wire gauge: 24
AWG

For connection or
specification details see pages
56 & 235.

PEL-2000 Series User Manual

28

Front Panel Overview – Load Module

PEL-2020

DC Electronic Load

L

R

20A / 80V , 100W

20A / 80V , 100W

R/L

DYNA.

STATIC/

SHORT

DISPLAY

LOAD

L

V sense V sense

R

80V DC

MAX

80V DC

MAX

L

80V DC

MAX MAX

80V DC

R

LED

display

R/L A/B Key

Display Key

Load Key

Selector
Knob

Static/
Dynamic
Key

Short Key

V Sense L

V Sense R

Terminals

(Left)

Terminals
(Right)

LED display

2x5 digit custom LED display.

Right/Left Key

or

A/B Key

The L/R key is used to switch
between the right and left load
channel on a dual channel load
module. The A/B key is used to
switch between A&B Values for
single channel load modules.

GETTING STARTED

29

Display Key

Used to alternate the display
output on the load module.

Current

Voltage

Power

Load time

Load Key

LOAD

Activates the load for the active
channel. (Right or Left)(A or B)

Left Voltage
Sense

The voltage sense terminals are
used when precise measurement is
needed. V Sense terminals are used
to compensate for voltage drops
across the main terminals caused
by the resistance of the load wires.

It is automatically activated when
connected to a DUT.

Right Voltage
Sense

Positive and
Negative
Terminals Left

The terminals for both the left and
right side of a load can draw
differing amounts depending on
the load module specifications.

PEL-2000 Series User Manual

30

Positive and
Negative
Terminals Righ t

For 2 channel load modules, the left
terminals are used for the 1

st

channel and the right terminals are
used for the 2

nd

channel.

On single channel load modules,
the left terminals are the lower (-)
potential terminals, whilst the right
terminals are the positive (+)
potential terminals.

Static/Dynamic
Selector Key

The STATIC/DYNA. Key manually
switches the load from Static
(manual) to Dynamic loads.

Dynamic loads are only supported
in CC and CR mode.
For more information see page 61 &

65.

Selector Knob
(Load)

The load Selector Knob is used to
edit and vary parameters for the
active channel on the local load.
Depending on the Mainframe
setup, the Selector Knob will either
only update the load (locally) or
will update both the local module
and the mainframe*. The Selector
knob can also be configured to
display measured or set values on
the local load module**.

* For more information on “Knob Type”, see
page 188.

** For more information on “Slave Knob”,
see page 192.