Basler BE1-49 User manual

INSTRUCTION MANUAL
FOR
TEMPERATURE RELAY
BE1-49
Publication Number: 9 1267 00 990
Revision: D 12/01

BE1-49 Introduction i
WARNING
To avoid personal injury or equipment damage, only qualified personnel
should perform the procedures presented in this manual.
INTRODUCTION
This Instruction Manual provides information concerning the operation and installation of BE1-49
Temperature Relay. To accomplish this, the following is provided.

Specifications

Functional characteristics

Installation

Operational Tests

Mounting Information

ii BE1- 49 Introduction
CONFIDENTIAL INFORMATION
OF BASLER ELECTRIC COMPANY, HIGHLAND, IL. IT IS LOANED FOR CONFIDENTIAL USE, SUBJECT
TO RETURN ON REQUEST, AND WITH THE MUTUAL UNDERSTANDING THAT IT WILL NOT BE USED IN
ANY MANNER DETRIMENTAL TO THE INTEREST OF BASLER ELECTRIC COMPANY.
First Printin
g
: 1980
Printed in USA
© 1980, 1998, 2001 Basler Electric Co., Hi
g
hland, IL 62249
December 2001
It is not the intention of this manual to cover all details and variations in equipment, nor
does this manual provide data for every possible contingency regarding installation or
operation. The availability and design of all features and options are subject to
modification withoutnotice. Should further information be required, contact Basler Electric
Company, Highland, Illinois.
BASLER ELECTRIC
ROUTE 143, BOX 269
HIGHLAND, IL 62249 USA
http://www.basler.com, [email protected]
PHONE [phone] FAX [phone]

BE1-49 Introduction iii
CONTENTS
SECTION1 GENERALINFORMATION ......................................... 1-1
General ......................................................... 1-1
Description ...................................................... 1-1
Model And Style Number ........................................... 1-1
SampleStyleNumber.............................................. 1-3
Specifications .................................................... 1-4
SECTION 2 HUMAN-MACHINE INTERFACE
(
CONTROLS AND INDICATORS
)
........ 2-1
SECTION 3 FUNCTIONAL DESCRIPTION ....................................... 3-1
Functional Description ............................................. 3-1
Power Supply ................................................. 3-1
Power Supply Status Output ..................................... 3-2
ConstanctCurrentSource ....................................... 3-2
Amplifier ..................................................... 3-2
Reference Voltage Supply ....................................... 3-2
Upper and Lower Temperature Comparators ........................ 3-2
Latch (Optional) ............................................... 3-2
OutputDrivers ................................................ 3-2
OutputRelay.................................................. 3-2
TargetIndicator ............................................... 3-2
SECTION4 INSTALLATION .................................................. 4-1
General ......................................................... 4-1
RelayOperatingPrecautions ........................................ 4-1
DielectricTest.................................................... 4-1
Mounting ........................................................ 4-1
Connections ..................................................... 4-1
Adjustments ..................................................... 4-2
SECTION5 OPERATIONALTEST ............................................. 5-1
General ......................................................... 5-1
Power Supply Status Output ........................................ 5-1
Operational Test of Upper Temperature Limit Trip ....................... 5-1
Operational Test of Lower Temperature Limit Trip ....................... 5-4
Trip Point Selection (Except Output Options L and M) .................... 5-5
Trip Point Selection (Output Options L and M) .......................... 5-6
SECTION6 MAINTENANCE .................................................. 6-1
General ......................................................... 6-1
In-House Repair .................................................. 6-1
Storage ......................................................... 6-1
SECTION 7 MANUAL CHANGE INFORMATION .................................. 7-1
Changes ........................................................ 7-1

BE1-49 General Information 1-1
SECTION 1 • GENERAL INFORMATION
GENERAL
The BE1-49 Temperature Relay is a solid state device that monitors the temperature of a remotely located
resistive temperature detector (RTD), and provides signals to the protective scheme when the sensed
temperaturegoesaboveorbelowpredeterminedlimits.Avarietyofoutputoptionsprovideaselectionoflatching
or non-latching types of normally open or closed contacts.
DESCRIPTION
TheBaslerTemperatureRelaysuppliesaconstantcurrent toaremotely locatedresistivetemperaturedetector,
andsenses the temperatureofthedetectorbymeasuring thevoltageacross the resistive element. When a pre-
programmedtemperaturelimitisreached,therelayenergizesitsoutputrelaysothattheprotectionschememay
take appropriate action.
Programming of the temperature limits is accomplished by adjusting the UPPER TEMPERATURE LIMIT and
LOWERTEMPERATURELIMITcontrolsontherelay frontpanel.Eachcontrolisadjustableoverarangeof60 
to 190  C. The effect on the protection scheme of exceeding the control setting limits of the relay is defined by
the output option selected. Table 1-1 shows the available output options. The dotted horizontal lines represent
hypothetical upper and lower temperature limit settings. The circled numbers represent relay case terminals.
A target thatindicates when the upper temperature limit has been exceeded is optionally available,and may be
either internally operated or current operated. The current operated target requires a minimum of 0.1 A to flow
in the trip circuit for proper operation. The internally controlled target MUST be specified if NC output contacts
are specified.
The relay assembly is mounted in a drawout cradle and enclosed in a standard, utility style case. Individual
circuit components are accessible by removing the individual printed circuit boards from the relay cradle and
using an extender board (Basler part number 9 1655 00 100) to test or troubleshoot.
MODEL AND STYLE NUMBER
The electrical characteristics and optional features included in a particular model BE1-49 Temperature Relay
aredefinedbyacombinationoflettersandnumbersthatmakeupitsstylenumber.Themodelnumber, followed
by its style number, appears on the front panel, drawout cradle, and inside the case assembly.
The style charts represented by Figure 1-1, lists all available options and relates them to the style number
system. Upon receipt of a temperature relay, be sure to check relay style number against the requisition and
packing list to see that they agree.

1-2 BE1-49 General Information
1
10
2
1
10
2
1
10
2
1
10
1
10
1
10
2
1
10
2
1
10
2
1
10
2
1
10
2
The callouts in the following figure are referred to in Table 1-1.
Table 1-1. Output Characteristics
A BCDE
OPERATING POWER ON
Output Style Operating power
off or operating
power on and
temperature is less
than LTL
Temperature
greater than LTL
but less than
UTL
Temperature
greater than
UTL
Temperature
drops below
UTL
Temperature
drops below
LTL
F. Two Relays,
NO Open, Closed Closed, Closed Open, Closed Open, Open
H. Two relays,
NC Closed, Open Open, Open Closed, Open Closed, Closed
J. Two relays, NO,
Latching (UTL) Open, Closed, Closed, Closed Closed, Closed Open, Open
L. One relay, NO,
Latching Open Closed Closed Open
M. One relay, NC,
Latching Closed Open Open Closed
N. Two relays:
Upper NO
Lower NC
Open, Open Closed, Open Open, Open Open, Closed
P. Two relays:
Upper NC
Lower NO
Closed, Closed Open, Closed Closed, Closed Closed, Open
R. Two relays,
NC, Latching
(UTL)
Closed, Open Open, Open Open, Open Closed, Closed
S. Two relays:
Upper NO
Latching
Lower NC
Open, Open Closed, Open Closed, Open Open, Closed
T. Two relays:
Upper NC
Latching
Lower NO
Closed, Closed Open, Closed Open, Closed Closed, Open

BE1-49 General Information 1-3
SAMPLE STYLE NUMBER
Thestylenumberidentificationchartaboveillustratesthemanner inwhich a relay'sstylenumberisdetermined.
For example, if the style number were P1J-A1E-B0N5F the device would have the following features.
(P) RTD sensing output
(1) Designed to be used with copper RTD rated 10 ohms at 25  C
(J) Two normally open primary outputs, with the upper temperature limit trip contact latching on closure
(A1) Instantaneous trip timing
(E) Isolated internal operating power obtained from 100/120 Vac source
(B) One current operated target
(0) No Option 1 available
(N) No Option 2 available
(5) SPDT auxiliary contact output
(F) Semi-flush mounting
Figure 1-1. Style Number Identification Chart

1-4 BE1-49 General Information
SPECIFICATIONS
Sensing Method Four wire, using a remotely installed, 10 ohm copper or
100 ohm platinum resistive temperature detector (RTD)
located within the protected machine. Relay supplies
constant 40 mA current, and senses voltage across the
temperature sensitive resistance element.
Outputs
Resistive
Inductive
Output contacts are rated as follows.
120/240 Vac - make 30 A for 0.2 seconds, carry 7 A
continuously, break 7 A. 250 Vdc - make and carry 30 A
for 0.2 seconds, carry 7 A continuously, break 0.1 A. 500
Vdc - make and carry 15 A for 0.2 seconds, carry 7 A
continuously, break 0.1 A.
120/240 Vac, 125 Vdc, 250 Vdc - break 0.1 A (L/R =
0.04).
Power Supply One of the six types of power supplies listed in Table 1-2
may be selected to provide internal relay operating
power.
Table 1-2. Power Supply Types And Specifications
Type Nominal Input
Voltage Input Voltage Range Burden at Nominal
B (Mid Range) 48 Vdc 24 to 150 Vdc 4.0 W
C (Mid Range) 125 Vdc
120 Vac 24 to 150 Vdc 90 to 132 Vac 4.5 W 10.3 VA
D(Low Range) 24 Vdc 12 † to 32 Vdc 4.0 W
E (Mid Range) 120 Vac 90 to 132 Vac 10.3 VA
W (Mid Range) 48 Vdc
125 Vdc 24 to 150 Vdc 24 to 150 Vdc 4.0 W 4.5 W
X (High Range) 250 Vdc
240 Vac 62 to 280 Vdc 90 to 270 Vac 5.2 W 14.0 VA
† Type D power supply initially requires 14 Vdc to begin operating. Once
operating, the voltage may be reduced to 12 Vdc and operation will continue.
Target Indicator A magnetically latched, manually reset, target indicator is
optionally available to indicate that the output has tripped.
An internally operated or a current operated target may
be specified. A current operated target requires 0.2 A in
the output trip circuit to actuate, and
trip circuit current must not exceed 30 A for 0.2 seconds,
7 A for 2 minutes, and 3 A continuous. A current operated
target may be selected only when normally open (NO)
output contacts have been specified.
Temperature Adjustment Range Two independently adjustable temperature controls, one
for upper and one for lower temperature limits, each
capable of settings over the range of 60 to 190  C.

BE1-49 General Information 1-5
Pickup Accuracy Relay pickup point will not vary more than +3
 C for
variations in input power or operating temperature within
the operating range.
UL UL Recognized under Standard 508, UL File #E97033.
Shock In standard tests, the relay has withstood 15 G’s in each
of three mutually perpendicular axes without structural
damage or degradation of performance.
Vibration In standard tests, the relay has withstood 2 G’s in each of
three mutually perpendicular axes swept over the range
of 10 to 500 Hz for a total of six sweeps, 15 minutes each
sweep, without structural damage or degradation of
performance.
Isolation In accordance with IEC 255-5 and ANSI/IEEE C37.90,
one minute dielectric (high potential) tests as follows:
All circuits to ground: 2121 Vdc
Input to output circuits: 1500 Vac or 2121
Vdc.
SurgeWithstandCapability QualifiedtoANSI/IEEEC37.90.11989 (Transient Immunity
and Radiated Susceptibility). Qualified to IEC-255-5
(Impulse requirements) and IEC-255-5\6 (Surge
requirements).
Temperature
Operating Range
Storage Range -20
 C (-4  F) to +65  C (+149  F).
-50  C (-58  F) to +90  C (+194  F).
Weight 11 pounds net.
Case Size S1.

BE1-49 Human-Machine Interface (Controls and Indicators) 2-1
SECTION 2 • HUMAN-MACHINE INTERFACE (CONTROLS AND
INDICATORS)
The following table is the reference for the call-outs in Figure 2-1.
LOCATOR CONTROL OR INDICATOR FUNCTION
A LOWER TEMP LIMIT  C
Control Determines the RTD temperature that will be the lower limit for the relay.
B UPPER TEMP LIMIT  C
Control Determines the RTD temperature that will be the upper limit for the relay.
C POWER Indicator A red light emitting diode (LED)
illuminates when the relay power supply
is supplying a nominal +12 Vdc to the
relay circuitry.
D Target Indicator An over-temperature condition, as set by
the UPPER TEMP LIMIT  C control, trips
the normally black target indicator to red.
The target is magnetically latched and
may be manually reset by the target reset
lever after the over temperature
indication is terminated. Depending on
the option supplied, the temperature
indication may be terminated when the
over temperature condition has ended, or
when the RTD temperature has fallen
below the lower temperature limit as set
by the LOWER TEMP LIMIT  C control
on relays with a latching type of output.
E Target Reset Lever The target indicator is a magnetically
latched device. Therefore, the target
must be returned to its normal (black)
position after an upper temperature
indication is terminated by pushing up on
the reset lever that extends through the
lower left of the relay case front cover.

2-2 BE1-49 Human-Machine Interface (Controls and Indicators)
Figure 2-1. Location of Controls and Indicators

BE1-49 Functional Description 3-1
POWER
SUPPLY
SENSOR
POWER
SUPPLY
CONSTANT
CURRENT
SOURCE
UPPER
TEMPERATURE
COMPARATOR
LOWER
TEMPERATURE
COMPARATOR
AMPLIFIER
OUTPUT
DRIVER
(LOW)
OUTPUT
DRIVER
(HIGH)
POWER
SUPPLY
STATUS
UPPER
TEMP.
OUTPUT
LOWER
TEMP.
OUTPUT
REFERENCE
VOLTAGE
SUPPLY
R
T
D
1
POWER
INPUT OPERATING
VOLTAGE
UPPER
TEMP.
LIMIT
LOWER
TEMP.
LIMIT
SET OPTIONAL
LATCH
RESET
THE BE1-49 TEMPERATURE RELAY REQUIRES FOUR WIRES FOR THE
RTD. ONE PAIR PROVIDES CONSTANT CURRENT AND THE SECOND
PAIR MONITORS THE RTD VOLTAGE DROP. THIS CONFIGURATION
ELIMINATES MATCHING THE RESISTANCE OF THE LEADS. NO
BALANCING OF LEAD RESISTANCE OR REGARD FOR WIRE LENGTH IS
NECESSARY AS LONG AS THE TOTAL RESISTANCE OF THE WIRING IN
THE RTD CIRCUIT IS LESS THAN 20 OHMS. D2817-08
07-09-98
3
4
9
7
6
11
12
AUXILIARY
OUTPUTS
1
17
18
19
10
TGT
2
10
1
8
Paddle Operated Shortin
g
Bars
SECTION 3 • FUNCTIONAL DESCRIPTION
GENERAL
The following descriptions are referenced to the Functional Block Diagram in Figure 3-1.
Figure 3-1. Functional Block Diagram
Power Su
pp
l
y
Basler Electric enhanced the power supply design for unit case relays. This new design created three, wide
range power supplies that replace the six previous power supplies. Style number identifiers for these power
supplies have not been changed so that customers may order the same style numbers that they ordered
previously. The firstnewly designedpower supplies were installedin unitcaserelays withEIAdate codes9638
(thirdweek of September1996).A benefitof thisnewdesignincreasesthepowersupply operatingrangessuch
that the 48/125 volt selector is no longer necessary. Specific voltage ranges for the three new power supplies
and a cross reference to the style number identifiers are shown in the following table.
Table 3-1. Wide Range Power Supply Voltage Ranges
Power Supply Style Chart Identifiers Nominal Voltage Voltage Range
Low Range D 24 Vdc 12† to 32 Vdc
Mid Range B, C, E, W 48, 125 Vdc,
120 Vac 24 to 150 Vdc, 90 to 132 Vac
High Range X 125, 250 Vdc,
120, 240 Vac 62 to 280 Vdc, 90 to 270 Vac
† 14 Vdc is required to start the power supply.
Relayoperatingpowerisdevelopedbythewiderange,isolated,lowburden,flybackswitching,solidstatepower
supply. Nominal ±12 Vdc is delivered to the relay internal circuitry. Input (source voltage) for the power supply
is not polarity sensitive. A red LED turns ON to indicate that the power supply is functioning properly.
If a grounded RTD is used, a Type E power supply is required. A Type E power supply is a mid range power
supply with an additional isolation transformer.

3-2 BE1-49 Functional Description
Power Su
pp
l
y
Status Out
p
ut
(
O
p
tion 2-s
)
The power supply status output relay is energized and its NC output contact is opened when power is applied
totherelay.Normalinternalrelayoperatingvoltagemaintainsthepowersupplystatusoutputrelaycontinuously
energized withitsoutputcontactopen.If the power supplyoutputvoltagefallsbelowtherequirementsof proper
operation, the power supply output relay is deenergized, closing the NC output contact.
Constant Current Source
Theconstantcurrentsourceprovidesaregulated40mAtotheexternalRTD. Thiscircuitisrelativelyunaffected
by changes in the ambient temperature. Since resistance of the RTD varies directly with temperature, 40 mA
through the RTD develops a voltage which is proportional to RTD temperature. See Section 5 for a graphical
representation.
Am
p
lifier
The amplifier monitors the voltage across the RTD and provides a voltage level signal to both the upper and
lower temperature limit comparator stages.
Reference Volta
g
e Su
pp
l
y
The reference voltage supply provides a regulated voltage to the UPPER TEMPERATURE LIMIT and LOWER
TEMPERATURELIMITfrontpanelcontrols.Eachofthesecontrolsisapotentiometerandfunctionsasavariable
voltage divider. The position of the potentiometer wiper determines a reference voltage for one input of the
corresponding comparator circuit.
U
pp
er And Lower Tem
p
erature Com
p
arators
Two similar comparators in the relay each compare the amplified voltage across the RTD with a dedicated
referencevoltageestablishedbythesettingofafrontpanelcontrol.Theuppertemperaturecomparatorprovides
an output current to its associated driver circuit when the RTD voltage exceeds the reference voltage from the
UPPER TEMPERATURE LIMIT potentiometer. The lower temperature comparator provides an output current
to its associated driver circuit when the RTD voltage is less than the reference voltage from the LOWER
TEMPERATURE LIMIT potentiometer.
Latch
(
O
p
tional
)
Alatchingfunctionisoptionallyavailablefortheuppertemperatureoutput.Whenthislatchisselected,theupper
temperatureoutputwilllatchinitsenergizedconditionwhentheuppertemperaturelimitisexceeded.Theoutput
will then remain latched until the RTD temperature falls below its lower limit (as determined by the lower
temperature comparator).
Out
p
ut Drivers
Two Darlingtonamplifiers are provided as output drivers in the relay. Each amplifier receives the output current
from an associated comparator and amplifies it to provide sufficient current to drive the selected output device.
An inverter is provided in the input to the lower limit output driver to cause it to energize the output relay when
the lower limit is exceeded.
Out
p
ut Rela
y
Awidevarietyofrelaycontactarrangementsareavailable.ThecontactarrangementisspecifiedbytheOUTPUT
letter in the relay style number. Refer to Figure 1-1 for a list of all of the available output options.
Tar
g
et Indicator
An optional target indicator on the front panel is tripped and magnetically latched when the upper temperature
limit is exceeded. It may be reset manually after the upper temperature limit output is de-energized.

BE1-49 Installation 4-1
NOTE
Be sure the relay case is hard-wired to earth ground with no smaller than 12 AWG
copper wire attached to the ground terminal on the rear of the relay case. When the
relay is configured in a system with other protective devices, always use a separate
lead to the ground bus from each relay.
SECTION 4 • INSTALLATION
GENERAL
When not shipped as part of a control or switchgear panel, the relays are shipped in sturdy cartons to
prevent damage during transit. Immediately upon receipt of a relay, check the model and style number
againsttherequisitionandpackinglisttoseethattheyagree.Visuallyinspecttherelayfordamagethatmay
haveoccurredduringshipment.Ifthereisevidentdamage,immediatelyfileaclaimwiththecarrierandnotify
the Regional Sales Office, or contact Customer Service at Basler Electric, Highland, Illinois.
In the event the relay is not to be installed immediately, store the relay in its original shipping carton in a
moisture and dust free environment. When the relay is to be placed in service, it is recommended that the
following operational test be performed prior to installation.
RELAY OPERATING PRECAUTIONS
Before installation or operation of the relay, note the following precautions:
1. A minimum of 0.2 A in the output circuit is required to ensure operation of current operated targets.
2. The relay is a solid-state device. If a wiring insulation test is required, remove the connecting plugs and
withdraw the cradle from its case.
3. When the connecting plugs are removed the relay is disconnected from the operating circuit and will not
provide system protection. Always be sure that external operating (monitored) conditions are stable
before removing a relay for inspection, test, or service. Also, be sure that connecting plugs are in place
before replacing the front cover.
4. Besure the relaycase is hardwiredtoearthgroundusingthegroundterminalontherearoftheunit.Use
a separate ground lead to the ground bus for each relay.
DIELECTRIC TEST
InaccordancewithIEC255-5andANSI/IEEEC37.90,oneminutedielectric(highpotential)testsasfollows:
All circuits to ground: 2121 Vdc
Input to output circuits: 1500 Vac or 2121 Vdc.
MOUNTING
Relay outline dimensions and panel drilling diagrams are supplied in Figures 4-1 through 4-10.
CONNECTIONS
Incorrect wiring may result in damage to the relay. Be sure to check model and style number against the
options listed in the Style Number Identification Chart before connecting and energizing a particular relay.
Connectionsshould be madewith 14 AWGstrandedwireorbetter.Typicalexternal connectionsareshown
in Figure 4-11 . For internal connections refer to Section 3, Functional Block Diagram.

4-2 BE1-49 Installation
CAUTION
If a grounded RTD is to be used, power supply type E must be specified.
To prevent an inductive overload of the relay's contacts, it is necessary to break the trip circuit externally
through the 52a contacts. (See Figure 4-11).
Terminals 3 and 4 are external relay power supply voltage inputs and are not polarity sensitive. Terminals
6 and 8 are the constant current supply to the RTD.
Terminals 7 and 9 are the voltage sensing inputs to the relay. To achieve the rated temperature accuracy
for the relay, a wire should be connected from each of terminals 6, 7, 8, and 9 to the RTD. Each of the four
wires should be less than 20 ohms of resistance. If less than rated temperature accuracy is acceptable,
terminals 6 and 7 may be jumpered together and terminals 8 and 9 jumpered together.
The relay circuitry is connected to the case terminals by removable connecting plugs (1 for 10 terminal
cases, 2 for 20 terminal cases). Removal of the connecting plug(s) opens the NO trip contact circuit and
shorts the NC trip contact circuit before opening the power and sensing circuits.
ADJUSTMENTS
Therelay has beencalibratedatthefactoryanditis stronglyrecommendedthatthecalibration adjustments
notbedisturbed. If,however,relaypickupaccuracyissuspectforanyreason,removetherelayfromservice
and check the temperature settings using the procedures given in Section 5 of this manual.

BE1-49 Installation 4-3
D1427-01.VSD
12-04-01
Figure 4-1 . S1 Case, Outline Dimensions, Front View

4-4 BE1-49 Installation
D2856-23
06-15-99
D1427-28
12-04-01
DETAIL A-A
SHOWING THE ADDITION OF WASHERS
OVER THE BOSS TO TIGHTEN THE
RELAY AGAINST THE PANEL.
CASE
Figure 4-2 . S1 Case, Single-Ended, Semi-Flush Mounting, Outline Dimensions, Side View
Figure 4-3 . S1 Case, Single-Ended, Projection Mount, Outline Dimensions, Side View

BE1-49 Installation 4-5
D1427-27
12-04-01
P0002-17
01-30-01
DETAIL A-A
SHOWING THE ADDITION OF WASHERS
OVER THE BOSS TO TIGHTEN THE
RELAY AGAINST THE PANEL.
CASE
Figure 4-4 . S1 Case, Double-Ended, Semi-Flush Mounting, Outline Dimensions, Side View
Figure 4-5 . S1 Case, Double-Ended, Projection Mount, Outline Dimensions, Side View

4-6 BE1-49 Installation
9
10 2
1
5.56
(141.3)
8.38
(212.9)
12-06-01
D1427-25
Figure 4-6 . S1 Case, Single-Ended, Projection Mount, Outline Dimensions, Rear View

BE1-49 Installation 4-7
Figure 4-7 . S1 Case, Double-Ended, Projection Mount, Outline Dimensions, Rear View