Brainchild L91 User manual

User's Manual
BRAINCHILD
TEMPERATURE LIMIT CONTROLLER L91
DIN EN ISO 9001
Certificate: 01 100 98505
R
R
APPROVED
UM0L911C

Warning Symbol
Use the Manual
The Symbol calls attention to an operating procedure, practice, or
the like, which, if not correctly performed or adhered to, could result
in personal injury or damage to or destruction of part or all of the
product and system. Do not proceed beyond a warning symbol
until the indicated conditions are fully understood and met.
Installers
System Designer
Expert User
Read Chapter 1, 2
Read All Chapters
Read Page 12
NOTE:
It is strongly recommended that a process should incorporate
a LIMIT CONTROL like L91 which will shut down the equipment
at a preset process condition in order to preclude possible
damage to products or system.
Information in this user's manual is subject to change without notice.
Copyright a October 2000, Brainchild Electronic Co., Ltd. all rights
reserved. No part of this publication may be reproduced,
transmitted, transcribed or stored in a retrieval system, or translated
into any language in any form by any means without the written
permission of the Brainchild Electronic Co., Ltd.
UM0L911C
2
This manual is applicable for the products with software version
19 and later version.

UM0L911C 3
Contents
Chapter 1 Overview
1-1 General
1-2 Ordering Code
1-3 Programming Port
1-4 Keys and Display
1-5 Menu Overview
1-6 Limit Control Operation
1-7 Parameter Descriptions
Chapter 2 Installation
2-1 Unpacking
2-2 Mounting
2-3 Wiring Precautions
2-4 Power Wiring
2-5 Sensor Installation
Guidelines
2-6 Thermocouple Input
Wiring
2-7 RTD Input Wiring
2-8 Linear DC Input Wiring
2-9 Event Input Wiring
2-10 Output 1 Wiring
2-11 Output 2 Wiring
2-12 RS-485
Chapter 3 Programming
3-1 Process Input
3-2 Limit Control
3-3 Set point Range
3-4 PV Shift
3-5 Digital Filter
3-6 Process Alarms
3-7 RS-485 Communication
3-8 Display Mode
3-9 Signal Conditioner DC
Power Supply
3-10 Remote Reset
3-11 Remote Lock
3-12 Limit Annunciator
Chapter 4 Applications
Chapter 5 Calibration
Chapter 6 Specifications
Page No Page No
5
6
7
7
12
13
16
22
22
23
25
25
26
27
28
29
30
31
32
33
34
34
35
35
36
37
38
38
40
40
41
42
43
48
3-13 Reference Data 41
Chapter 7
Modbus Communications
52
Appendix
A-1 Error codes 61

4
Figures & Tables
Figure 1-1 Programming Port Location
Figure 1-2 Front Panel Display
Figure 1-3 Power Up Sequence
Figure 1-4 High Limit Operation
Figure 1-5 Low Limit Operation
Figure 1-6 High/Low Limit Operation
Figure 2-1 Mounting Diagram
Figure 2-2 Lead Termination
Figure 2-3 Rear Terminal Connection Diagram
Figure 2-4 Power Supply Connections
Figure 2-5 Thermocouple Input Wiring
Figure 2-6 RTD Input Wiring
Figure 2-7 Linear Voltage Input Wiring
Figure 2-8 Linear Current Input Wiring
Figure 2-9 Event Input Wiring
Figure 2-10 Output 1 Wiring
Figure 2-11 Output 2 Wiring
Figure 2-12 RS-485 Wiring
Figure 3-1 Conversion Curve for Linear Type Process Value
Figure 3-2 Filter Characteristics
Figure 3-3 Normal Process Alarm
Figure 3-4 Latching Process Alarm
Figure 3-6 Remote Reset Application
Figure 3-7 Remote Lock Application
Figure 4-1 Over Temperature Protection with Remote Reset
Figure 5-1 Flow chart for Manual Calibration
Figure 5-2 Cold Junction Calibration Setup
Figure 5-3 RTD Calibration
Table 1-1 Display Form of Characters
Table 6-1 Input Characteristics
Page No
7
8
10
13
14
15
23
24
24
25
27
27
28
28
29
30
31
32
33
35
37
37
39
40
42
44
45
46
9
49
Figure 3-5 DC Power Supply Application
40
UM0L911C

Temperature limit control is a safety limit device with a L91
latching output, that removes power in an abnormal condition
during the process is higher than the high limit set point or
lower than the low limit set point.
The unit is powered by 90-264 VAC or 11-26VAC/VDC supply,
incorporating a 2 amp. form C relay for limit control, an universal
input which is fully programmable for PT100, thermocouple types J,
K, T, E, B, R, S, N, L and 0~60mV, an option port available for one
of the following functions: alarm output, RS-485 communication
interface, DC power supply output, limit annunciator output and
event input. Alternative output options include SSR drive and triac .
The input signal is digitized by using a converter. Its 18-bit A to D
fast sampling rate (5 times/second) allows the L91 to control fast
process such as pressure and flow.
Digital communication RS-485 is available as an additional option.
This option allows L91 to be integrated with supervisory control
system. An alarm output is another option. A variety of alarm
function and alarm mode can be programmed for a specific
application. The DC power supply output option is used for an
external sensor or transmitter. The event input option can be
programmed for remote reset or remote lock signal input. The limit
annunciator option can be used to control an alarm buzzer.
Three kinds 1. of method can be used to program L91. use keys on
front panel to program the unit manually, Use a PC and setup 2.
software to program the unit via RS-485 port and Use a pc and 3.
configuration software to program the unit via programming port.
and High accuracy, maximum flexibility, fast response user
friendly are the main features of L91.
Chapter 1 Overview
1-1 General
5
UM0L911C

1-2 Ordering Code
Accessories
OM94-6 = Isolated 1A / 240VAC Triac Output Module ( SSR )
OM94-7 = 14V/40mA SSR Drive Module
DC94-1 = Isolated 20V / 25mA DC Output Power Supply
DC94-2 = Isolated 12V / 40mA DC Output Power Supply
DC94-3 = Isolated 5V / 80mA DC Output Power Supply
CM96-1 = Isolated RS-485 Interface Module
CM96-3 = Isolated 4-20mA / 0-20mA Retransmission Module
CM96-4 = Isolated 1-5V / 0-5V Retransmission Module
CM96-5 = Isolated 0-10V Retransmission Module
EI96-1 = Event Input Module
CC91-2 = Programming port cable for L91
UM0L911C = L91 User's Manual
Power Input
4: 90 - 264 VAC, 50/60 HZ
5: 11 - 26 VAC or VDC
9: Special Order
1: Standard Input
Thermocouple: J, K, T, E, B,
R, S, N, L, C, P
RTD: PT100 DIN, PT100 JIS
mV: 0~60 mV
2: Voltage: 0-1 V
3: Voltage : 0-10 V
4: Current: 0-20mA
9: Special Order
Signal Input
1: Form C relay rated 2A/240VAC
2: Pulsed voltage to drive SSR,
5V/30mA
6: Triac Output 1A / 240VAC,SSR
C: Pulsed voltage to drive SSR,
14V/40mA
9: Special order
Output 1
1 2 3
L91
Standard Model:
L91-4110
90 - 264 operating voltage
Input: Standard Input
Output 1: Relay
Option: None
Example
4
0: None
1: Form A Relay 2A/240VAC
2: Pulsed voltage to drive SSR, 5V / 30mA
6: Triac Output, 1A / 240VAC, SSR
7: Isolated 20V / 25mA DC Output
Power Supply
8: Isolated 12V / 40mA DC Output
Power Supply
9: Isolated 5V / 80mA DC Output
Power Supply
A: RS-485
B: Event input
C: Pulsed voltage to drive SSR, 14V/40mA
D: Retransmit 4-20mA / 0-20mA
E: Retransmit 1-5V / 0-5V
F: Retransmit 0-10V
H: Special order
Option
UM0L911C
6

Related Products
SNA10A = Smart Network Adaptor for Third Party Software,
Converts 255 channels of RS-485 or RS-422 to
RS-232 Network
SNA12A = Smart Network Adaptor for programming port to RS-232
interface.
BC-Set = Configuration Software
1-3 Programming Port
1-4 Keys and Display
Note: The programming port is used for off-line setup and
calibration procedures only. Don't attempt to make any
connection to these jumpers when the unit is used for a
normal control purpose.
KEYPAD OPERATION
SCROLL KEY
This key is used to:
1. Select a set point to be displayed.
2. Select a parameter to be viewed or adjusted.
3. Advance display from a parameter code to the next parameter code.
7
Figure 1-1 Programming
Port Location
Open the housing
Top view of L91
Programming Port
control board
Power board
pin 1
UM0L911C

RESET
RESET
ENTER KEY 4 seconds, 8 seconds
Press the scroll key for 4 seconds the display will enter the setup
menu. Press this key for 8 seconds to enter the calibration mode.
UP KEY
This key is used to increase the selected parameter value during the
lock indicator is off.
DOWN KEY
This key is used to decrease the selected parameter value during
the lock indicator is off.
RESET KEY
This key is used to:
1.Reset the limit condition after the process is within the limit.
2.Revert the display to the normal display.
3.Reset the latching alarm, once the alarm condition is removed.
4.Reset the limit annunciator.
If the RESET key is left pressed, only ONE reset operation will Note:
occur. If the unit subsequently goes into a state where reset is
required again, the RESET key (or remote reset contacts) must be
released (opened) and pressed (closed) again.
UNLOCK KEY 4 seconds
Press the RESET key for 4 seconds to enable up/down key function,
also to reset the reference data ( ) and the lock indicatorSection 3-13
will be extinguished. However, this function is disabled when remote
lock is selected for EIFN (Event input function). .See section 3-11
8
LSP1
PV
OP1
HSP1 SP2
LOCK
RESET
OP2
BRAINCHILD
L91LIMIT CONTROL
LF
LC
Figure 1-2 Front Panel Display
INDICATORS
Op1: Output 1 status indicator
OP2: Output 2 status indicator
LC: Degree C indicator
LF: Degree F indicator
PV: Process value
HSP1: High limit set point 1
LSP1: Low limit set point 1
SP2: Set point 2 for output 2
LOCK: Lock status indicator
UM0L911C

For a number with decimal point the display will be shifted one digit right:
-19999 will be displayed as:
45536 will be displayed as:
How to display a 5-digit number :
-199.99 will be displayed as -199.9, 4553.6 will be displayed as 4553
For a number without decimal point the display will be divided into two
alternating phases:
: These characters are displayed differently.
Table 1-1 Display Form of Characters
AEINSX
BFJOTY
CGKPUZ
cHLQV
?
D h MRW=
DISPLAY FORM
-9999 will be displayed as:
NORMAL DISPLAY
During normal operation, the unit can be configured to display the
process value, high limit or low limit set point ( HSP1 or LSP1
dependent on OUT1 selection ) or the word SAFE.
ABNORMAL DISPLAY
Whenever the process is outside the normal range, the process
value will be displayed.
9
UM0L911C

SENSOR BREAK DISPLAY
If a break is detected in the sensor circuit, the display will show:
POWER UP SEQUENCE
10
All segments of display and indicators are
left off for 0.5 second.
All segments of display and indicators are
lit for 1 second.
Display program code of the product for 1
second. The left diagram shows program
no.2 with version 17.
Display Date Code for 1 second. The left
diagram shows Year 2001, Month February
(2), Date 25'th. This means that the product
is produced on February 25'th, 2001. Note
that the month code is for is A October, B
for and is for .November C December
A-D FAILURE DISPLAY
If failure is detected in the A-D converter circuit, the display will
show:
LSP1
PV
OP1
HSP1 SP2
LOC K
RESET
OP2
BRAINCHILD
L91LIMIT CONTROL
LF
LC
LSP1
PV
OP1
HSP1 SP2
LOC K
RESET
OP2
BRAINCHILD
L91LIMIT CONTROL
LF
LC
RESET
BRAINCHILD
L91LIMIT CONTROL
LSP1 PV
OP1
HSP1 SP2
LOC K
RESET
OP2
BRAINCHILD
L91LIMIT CONTROL
LF
LC
UM0L911C

Display the serial number ( 001~999 ) for 1
second.
Display the hours used for 2 seconds. The
left diagram shows that the unit has been
used for 23456.7 hours since production.
Figure 1-3 Power Up Sequence
Verify all electrical connections have been properly made
before applying power to the unit.
During power up, a self-test procedure is performed within 6.5
seconds. During self-test period all outputs are left off. When
the self-test procedure is complete, the unit reverts to normal
operation.
11
LSP1 PV
OP1
HSP1 SP2
LOC K
RESET
OP2
BRAINCHILD
L91LIMIT CONTROL
LF
LC
LSP1
PV
OP1
HSP1 SP2
LOC K
RESET
OP2
BRAINCHILD
L91LIMIT CONTROL
LF
LC
LSP1 PV
OP1
HSP1 SP2
LOC K
RESET
OP2
BRAINCHILD
L91LIMIT CONTROL
LF
LC
UM0L911C

1-5 Menu Overview
PV Value
or SAFE
HSP1 Value
LSP1 Value
SP2 Value
INPT
UNIT
RESO
IN.LO
IN.HI
SHIF
FILT
OUT1
O1.HY
HSP.L
HSP.H
LSP.L
LSP.H
OUT2
ADDR
BAUD
PARI
AOFN
AOLO
AOHI
AL.FN
AL.MD
AL.HY
AL.FT
EIFN
DISP
Input type
Process unit
Display resolution
Low scale value for linear
input
High scale value for linear
input
PV shift (offset) value
PV filter time constant
Output 1 function
Output 1 hysteresis value
Lower limit of HSP1
Lower limit of LSP1
Upper limit of HSP1
Upper limit of LSP1
Output 2 function
Address for digital
communication
Baud rate
Parity bit
Analog output function
Analog output low scale
Analog output high scale
Alarm function
Alarm mode
Alarm hysteresis value
Alarm failure transfer
Event input function
Normal display format
Process
value
High limit
setpoint 1
value
Low limit
setpoint 1
value
Set point 2
value
Press
for 4 sec.
Setup Mode
12 UM0L911C
PV.HI
PV.LO
Max. historical PV
Min. historical PV
T.ABN Abnormal time

RESET
The flow charts show a complete listing of parameters. For
actual application the number of available parameters is
dependent on the setup conditions, and should be less than
that shown in the flow charts.
Press key for 4 seconds to enable up/down key
function, and the LOCK indicator will be extinguished.
Note 1.
Note 2.
1-6 Limit Control Operation
HIGH LIMIT OPERATION
If Hi. is selected for OUT1, the unit will perform high limit control.
When power is applied the OUT1 relay is de-energized. After 6.5
seconds self-test period, if the process is below the high limit set
point (HSP1), the output 1 relay will be energized and OP1 indicator
will go off. If the process goes above the high limit set point, the
relay will be de-energized, the OP1 indicator will go on and the
display will show the process value. After the process falls below the
high limit set point and the RESET key is pressed or the remote
reset input is applied, the relay will be energized and the OP1
indicator will go off.
HSP1
ON
OFF
OUT1 Relay
A, B ,C=Reset is applied
O1.HY= Output1 hysteresis
Figure 1-4 High Limit Operation
PV
A B C
13
HSP1 O1.HY
UM0L911C

LOW LIMIT OPERATION
If Lo. is selected for OUT1, the unit will perform low limit control.
When power is applied the OUT1 relay is de-energized. After 6.5
seconds self-test period, if the process is above the low limit set
point (LSP1), the output 1 relay will be energized and OP1 indicator
will go off. If the process goes below the low limit set point, the relay
will be de-energized, the OP1 indicator will go on and the display
will show the process value. After the process rises above the low
limit set point and the RESET key is pressed or the remote reset
input is applied, the relay will be energized and the OP1 indicator
will go off.
LSP1+O1.HY
LSP1
ON
OFF
OUT1 Relay
A, B ,C=Reset is applied
O1.HY= Output1 hysteresis
Figure 1-5 Low Limit Operation
A B C
14 UM0L911C

HIGH/LOW LIMIT OPERATION
If Hi.Lo is selected for OUT1, the unit will perform high/low limit
control. When power is applied the OUT1 relay is de-energized.
After 6.5 seconds self-test period, if the process is below the high
limit set point (HSP1) and above the low limit set point (LSP1), the
output 1 relay will be energized and OP1 indicator will go off. If the
process goes above the high limit set point or below the low limit set
point, the relay will be de-energized, the OP1 indicator will go on
and the display will show the process value. After the process is
within the normal operation range, and the RESET key is pressed or
the remote reset input is applied, the relay will be energized and the
OP1 indicator will go off.
LSP1+O1.HY
HSP1
LSP1
HSP1 O1.HY
ON
OFF
OUT1 Relay
A, B, C, D, E, F =Reset is applied
O1.HY= Output1 hysteresis
Figure 1-6 High/Low Limit Operation
A B CD E F
15
UM0L911C

1-7 Parameter Descriptions
Parameter
Notation
Parameter
Description Range Default
Value
HSP1
LSP1
INPT
SP2
High Limit Set point 1
Low Limit Set point 1
Input Type Selection
Set point 2 Value for
Output 2
Low: HSP.L
High: HSP.H
Low: LSP.L
High: LSP.H
100.0 BC
(212.0 BF)
0 BC
(32.0 BF)
90.0 BC
(194.0 BF)
0 : J type
thermocouple
1 : K type
thermocouple
2 : T type
thermocouple
3 : E type
thermocouple
4 : B type
thermocouple
5 : R type
thermocouple
6 : S type
thermocouple
7 : N type
thermocouple
8 : L type
thermocouple
9 : C type
thermocouple
10 : P type
thermocouple
11 : PT100
ohms DIN curve
12 : PT100
ohms JIS curve
1
( 0 )
UM0L911C
16
Low: -19999
High: 45536

13 : 4~20
mA linear current
14 : 0~20
mA linear current
15 : 0~60
mV linear voltage
16 : 0~1 V
linear voltage
17 : 0~5 V
linear voltage
18 : 1~5 V
linear voltage
19 : 0~10V
linear voltage
Parameter
Notation
Parameter
Description Range Default
Value
INPT Input Type Selection 1
( 0 )
0
( 1 )
17
UM0L911C
UNIT
RESO
Process Unit
Display Resolution
0 :
Degree C unit
2 :
Process unit
1 :
Degree F unit
0 :
No decimal point
1 :
1 decimal point
2 :
2 decimal point
3 :
3 decimal point
1
IN.LO Low Scale Value for
Linear Input
Low: -19999
High: IN.HI 0

IN.HI
SHIF
High Scale Value for
Linear Input
PV Shift ( offset )
Value
Low: IN.LO
High: 45536
Low: -200.0 BC
(-360.0 BF)
High: 200.0 BC
(360.0 BF)
100.0
0.0
Parameter
Notation
Parameter
Description Range Default
Value
FILT PV Filter Time
Constant
3 : 1 second
time constant
0 : 0 second
time constant
4 : 2 seconds
time constant
5 : 5 seconds
time constant
6 : 10 seconds
time constant
7 : 20 seconds
time constant
8 : 30 seconds
time constant
9 : 60 seconds
time constant
1 : 0.2 second
time constant
2 : 0.5 second
time constant
2
OUT1 Output 1 Function
2 : High limit
control
3 : Low limit
control 2
18
4 : High/Low
limit control
UM0L911C

Parameter
Notation
Parameter
Description Range Default
Value
19
UM0L911C
O1.HY Output 1 Hysteresis
Value
Low: 0.1
High: 10.0 BC (18.0 BF) 0.1
HSP.L
LSP.L
HSP.H
LSP.H
Lower Limit of HSP1
Lower Limit of LSP1
Upper Limit of HSP1
Upper Limit of LSP1
Low: -19999
High: HSP.H
Low: -19999
High: LSP.H
Low: HSP.L
High: 45536
Low: LSP.L
High: 45536
0 BC
(32.0 BF)
0 BC
(32.0 BF)
1000.0 BC
(1832.0 BF)
-100.0 BC
(-148.0 BF)
OUT 2 Output 2 Function
5 :Event input
0 : No function
1 : DC power
supply output
2 : RS-485
Communication
3 :Alarm output
ADDR Address Assignment
of Digital COMM
Low: 1
High: 255
BAUD Baud Rate of Digital
COMM
0 : 0.3 Kbits/s
baud rate
1 : 0.6 Kbits/s
baud rate
4 : Limit
annunciator 4
1
6 :4-20mA analog
retransmission output
7 :0-20mA analog
retransmission output
8 :0-1V analog
retransmission output
9 :0-5V analog
retransmission output
10 :1-5V analog
retransmission output
11 :0-10V analog
retransmission output

Parameter
Notation
Parameter
Description Range Default
Value
6 : 14.4 Kbits/s
baud rate
7 : 19.2 Kbits/s
baud rate
8 : 28.8 Kbits/s
baud rate
9 : 38.4 Kbits/s
baud rate
BAUD Baud Rate of Digital
COMM 5
UM0L911C
20
PARI Parity Bit of Digital
COMM
0 : 8 bit
even parity
1 : 8 bit
odd parity
2 : 8 bit
none parity
0
5 : 9.6 Kbits/s
baud rate
3 : 2.4 Kbits/s
baud rate
4 : 4.8 Kbits/s
baud rate
2 : 1.2 Kbits/s
baud rate
AOFN Analog Output
Function
0 : Process
value
1 : High Limit
Set point 1
2 : Low Limit
Set point 1
0
AOLO Analog Output Low
Scale Value
Low: -19999
High: 45536
0 BC
(32.0 BF )
AOHI Analog Output High
Scale Value
Low: -19999
High: 45536
100.0 BC
(212.0 BF )
6 : Process
value high alarm
7 : Process
value low alarm
AL.FN Alarm function 6