futuredesion LIMIT L41 User manual

RR
RoHSRoHS

This 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:NOTE:
It is strongly recommended that a process should
incorporate a LIMIT like L41 which will shut down the
equipment at a preset process condition in order to
preclude possible damage to products or system.
It is strongly recommended that a process should
incorporate a LIMIT like L41 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.
This manual is applicable for L41 units with software version
Prog 5.11 and later.
Copyright a January 2008, Future Design Controls, 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 Future Design Controls.
UM L41-Rev 2
2

3
ContentsContents
Chapter 1 OverviewChapter 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 InstallationChapter 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 ProgrammingChapter 3 Programming
3-1 Process Input
3-2 Limit Control
3-3 Setpoint Range
3-4 PV Shift
3-5 Digital Filter
3-6 Process Alarms
3-7 RS-485 Communication
3-8 Retransmission
3-9 Signal Conditioner DC
Power Supply
3-10 Remote Reset
3-11 Remote Lock
3-12 Limit Annunciator
Chapter 4 CalibrationChapter 4 Calibration
Chapter 5 SpecificationsChapter 5 Specifications
Page No Page No
5
6
7
7
12
13
16
22
22
23
24
25
25
26
27
28
39
30
31
34
34
35
36
36
37
39
39
40
40
41
41
42
46
2-13 Ma Retransmission 33
UM L41-Rev 2
Appendix
A1- Error Codes ---------
Appendix
A1- Error Codes --------- 49
3-13 Reference Data 41
5
3-14 Display Mode 41

Figures & TablesFigures & Tables
Figure 3-1 Conversion of Linear Process Input --------------
Page No
7
8
11
13
14
15
22
23
23
24
25
26
27
27
28
29
30
31
34
36
38
38
40
40
43
44
45
9
48
4
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 3-2 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 Flow chart for Manual Calibration
Figure 4-2 Cold Junction Calibration Setup
Figure 4-3 RTD Calibration
Table 1-1 Display Form of Characters
Table 5-1 Input Characteristics
Figure 3-5 DC Power Supply Application
41
UM L41-Rev2
32
Figure 2-13, 14 RS-232 Wiring
33
Figure 2-14 Retransmission Wiring

The limit control L41 is a microprocessor based high or low limit
safety device with a latching output. The relay contacts open if
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 90-250 VAC or an optional 11-26
VAC/VDC power supply. It incorporates a 2 amp. form C relay for
limit control, a universal input which is fully programmable for
RTD PT100, thermocouple types J, K, T, E, B, R, S, N, L, 0~60mVolt,
Volt* and Milliamps*. Alternative main outputs are SSRD or Triac.
A second optional output is available. This output can be
configured for additional alarm or annunicator type output.
A DC power supply output option is available for external sensor
or transmitter excitation power. The standard event input can be
programmed for remote reset or remote lock signal input.
Ma/VDC retransmission option of Process variable or setpoint is
also available.
Digital communication RS-485 is available as an additional
option. This option allows L91 to be integrated with supervisory
control system.
Note; Retransmission and Communications is mutually exclusive.
Two kinds of method can be used to program L91.
1. use keys on front panel to program the unit manually.
2. Use a PC and setup software to program the unit via
standard configuration port.
The input signal is digitized by using a 18-bit A to D converter. Its
fast sampling rate (5 times/second) allows the L91 to respond
quickly to input changes.
High accuracy, maximum flexibility, fast response and simple
user friendly prompts are the main features of L91.
NOTE: * Volt and Milliamp Inputs are NOT FM Approved.
L41
Two kinds of method can be used to program L91.
1. use keys on front panel to program the unit manually.
2. Use a PC and setup software to program the unit via
standard configuration port.
18-bit A to D
fast sampling rate
High accuracy, maximum flexibility, fast response
user friendly prompts
The unit is powered by 90-250 VAC or an optional 11-26
VAC/VDC power supply. It incorporates a 2 amp. form C relay for
limit control, a universal input which is fully programmable for
RTD PT100, thermocouple types J, K, T, E, B, R, S, N, L, 0~60mVolt,
Volt* and Milliamps*. Alternative main outputs are SSRD or Triac.
A second optional output is available. This output can be
configured for additional alarm or annunicator type output.
The input signal is digitized by using a converter. Its
(5 times/second) allows the L91 to respond
quickly to input changes.
Chapter 1OverviewChapter 1Overview
1-1 General1-1 General
5
UM L41-Rev 2

1-2 Ordering Code1-2 Ordering Code
Power InputPower Input
4: 90-250 VAC, 47-63 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: 4-20, 0-20mA *
5: Voltage : 1-5,0-5 V *
9: Special Order
Signal InputSignal Input
0: None
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 1Output 1
112233
L41L41
445566
0: IP50 standard
1: IP65 water resistant
rubber installed
OptionsOptions
0:None
1: RS-485 interface
2: RS-232 interface
3: Retransmit 4-20mA/0-20mA
4: Retransmit 1-5V/0-5V
5: Retransmit 0-10V
9: Special Order
CommunicationCommunication
Output 2Output 2
0: None
1: Form C 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 / 40 mA DC
Output Power Supply
9: Isolated 5V / 80mA DC
Output Power Supply
C: Pulsed voltage to drive
SSR, 14V/40mA
H: Special order
AccessoriesAccessories
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
CM94-1 = Isolated RS-485 Interface Module
CM94-2 = Isolated RS-232 Interface Module
CM94-3 = Isolated 4-20mA / 0-20mA Retransmission Module
CM94-4 = Isolated 1-5V / 0-5V Retransmission Module
CM94-5 = Isolated 0-10V Retransmission Module
CC91-3 = Programming port cable for L41
UM0L411A = L41 User's Manual
*NOTE: Input OPTIONS 2, 3, 4, 5 & 9 ARE NOT FM APPROVED
7788
Standard leave blank
Special Order AA-ZZ
Standard leave blank
Special Order AA-ZZ
6
UM L41-Rev 2

1-3 Programming Port and DIP Switch1-3 Programming Port and DIP Switch
Front
Panel
Rear
Terminal
Figure 1.1 Access Hole
Overview
Figure 1.1 Access Hole
Overview
Table 1.1 DIPSwitch
Configuration
Table 1.1 DIPSwitch
Configuration
TC, RTD, mV
0-1V, 0-10V
0-20 mA
1234
:ON :OFF
Access Hole
The programming port is used to connect to
SNA12A for configuring with a PC.
The programming port is used to connect to
SNA12A for configuring with a PC.
ON DIP
1234
1-4 Keys and Display1-4 Keys and Display
KEYPAD OPERATIONKEYPAD 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
UM L41-Rev 2

Lock
RR
LIMIT CONTROLLIMIT CONTROL
L41L41
ENTER KEY 4 seconds, 6 seconds
Press the scroll key for 4 seconds the display will enter the setup
menu. Press this key for 6 seconds to enter the calibration mode.
Figure 1-2 Front Panel DisplayFigure 1-2 Front Panel Display
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.
Note: If the RESET key is left pressed, only ONE reset operation will
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.
Note:
UNLOCK KEY 4 seconds
Press the RESET key for 4 seconds to enable up/down key function,
and the lock indicator will be extinguished. However, this function is
disabled when the EI input pins are closed and remote lock is
selected for EIFN (Event input function). See section 3-11.See section 3-11
Output 1 ~ 2 Indicator
Process Unit Indicator
4 Buttons for ease of control
setup and set point adjustment.
Upper Display, to display process
value, menu symbol and error code
etc.
Lower Display, to display set
point value, parameter value etc.
RR
RR
Lock
Status
Indicator
The reference data are reset as long as the reset key is pressed for
4 seconds. See section 3-13.See section 3-13
8
UM L41-Rev 2

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 :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 CharactersTable 1-1 Display Form of Characters
AEINSX
BFJOTY
CGKPUZ
cHLQV
?
DhMRW=
DISPLAY FORMDISPLAY FORM
-9999 will be displayed as:
NORMAL DISPLAY
During normal operation, the unit can be configured to display the
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.
NORMAL DISPLAY
ABNORMAL DISPLAY
9
UM L41-Rev 2

SENSOR BREAK DISPLAY
If a break is detected in the sensor circuit, the display will show:
SENSOR BREAK DISPLAY
POWER UP SEQUENCEPOWER UP SEQUENCE
All segments of display and indicators
are left off for 0.5 second.
All segments of display and indicators
are lit for 1.5 seconds.
A-D FAILURE DISPLAY
If failure is detected in the A-D converter circuit, the display will
show:
A-D FAILURE DISPLAY
Lock
RR
LIMIT CONTROLLIMIT CONTROL
L41L41
Lock
RR
LIMIT CONTROLLIMIT CONTROL
L41L41
10
UM L41-Rev 2

Display the serial number ( 001~999 )
for 1.5 seconds.
Display Date Code for 1.5 seconds. The
left diagram shows Year 2006, Month
February (2), Date 25'th. This means
that the product is produced on
February 25'th, 2006. Note that the
month code A is for October, B is for
November and C is for December.
A October, B
November C December
Display program code of the product
for 1.5 seconds. The left diagram shows
program no.5 with version 10.
Lock
RR
LIMIT CONTROLLIMIT CONTROL
L41L41
Display the hours used for 1.5 seconds.
The left diagram shows that the unit has
been used for 23456.7 hours since
production.
Lock
RR
LIMIT CONTROLLIMIT CONTROL
L41L41
Figure 1-3
Power Up Sequence
Figure 1-3
Power Up Sequence
Lock
RR
LIMIT CONTROLLIMIT CONTROL
L41L41
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
11
UM L41-Rev 2

1-5 Menu Overview1-5 Menu Overview
INPTINPT
UNITUNIT
RESORESO
IN.LOIN.LO
IN.HIIN.HI
SHIFSHIF
FILTFILT
OUT1OUT1
O1.HYO1.HY
HSP.LHSP.L
HSP.HHSP.H
LSP.LLSP.L
LSP.HLSP.H
OUT2OUT2
COMMCOMM
ADDRADDR
BAUDBAUD
PARIPARI
AOFNAOFN
AOLOAOLO
AOHIAOHI
AL.FNAL.FN
AL.MDAL.MD
AL.HYAL.HY
AL.FTAL.FT
EIFNEIFN
DISPDISP
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
Communication 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
Setup ModeSetup Mode
PV.HIPV.HI
PV.LOPV.LO
Max. historical PV
Min. historical PV
T.ABNT.ABN Abnormal time
PV Value
SP1 or SAFE
4 sec.
HSP1
LSP1
SP2
High limit
setpoint 1
value
Low limit
setpoint 1
value
Setpoint 2
value
2 sec. Calibration Mode
12
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 1.
Note 2.Note 2.
RR
UM L41-Rev 2

1-6 Limit Control Operation1-6 Limit Control Operation
HIGH LIMIT OPERATIONHIGH 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 OperationFigure 1-4 High Limit Operation
PV
A B C
HSP1 O1.HY
13
UM L41-Rev 2

LOW LIMIT OPERATIONLOW 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 OperationFigure 1-5 Low Limit Operation
ABC
14
UM L41-Rev 2

HIGH/LOW LIMIT OPERATIONHIGH/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 OperationFigure 1-6 High/Low Limit Operation
ABCDEF
15
UM L41-Rev 2

1-7 Parameter Descriptions1-7 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 C
(212.0 F)
0 C
(32.0 F)
90.0 C
(194.0 F)
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 )
Low: -19999
High: 45536
16
UM L41-Rev 2

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 )
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
17
UM L41-Rev 2

18
IN.HI
SHIF
High Scale Value for
Linear Input
PV Shift ( offset )
Value
Low: IN.LO
High: 45536
Low: -200.0 C
(-360.0 F)
High: 200.0 C
(360.0 F)
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
4 : High/Low
limit control
UM L41-Rev 2

19
Parameter
Notation Parameter Description Range Default
Value
O1.HY Output 1 Hysteresis
Value
Low: 0.1
High: 10.0 C (18.0 F) 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 C
(32.0 F)
0 C
(32.0 F)
1000.0 C
(1832.0 F)
-100.0 C
(-148.0 F)
OUT 2 Output 2 Function
0 : No function
1 : DC power
supply output
2 : Alarm output
3 : Limit
annunciator
2
COMM Communication
function
0 : No
communication
1 : Modbus
RTU mode
protocol
2: 4-20mA
retransmission
output
3: 0-20mA
retransmission
output
: 0-5V
retransmission
output
4
: 1-5V
retransmission
output
5
1
: 0-10V
retransmission
output
6
UM L41-Rev 2

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
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 C
(32.0 F )
ADDR Address Assignment
of Digital COMM Low: 1 High: 255
0 : 0.3 Kbits/s
baud rate
1 : 0.6 Kbits/s
baud rate
1
20
UM L41-Rev 2