futuredesion L22 User manual

UML0621B
April 2023
PROCESS LIMIT CONTROLLER
L22/L62/L42
USER MANUAL

L22/L62/L42 Process Limit Control
2
Preface
Future Design Controls Inc. (herein referred to as FDC) reserves the right to change information available
in this document without notice. FDC is not liable for any damages incurred to equipment and/or personnel
during installation or use of the L22, L62 or L42 process limit control as explained in this document. The
end user must acquire sufficient knowledge and skill set prior to using the process limit control in the
application and follow all the local standards and regulations to meet all applicable safety requirements.
Revision History
Version
Description
Date
UM0L621A
Initial Release
February, 2022
UM0L621B
Power-Up Mode Addition
April, 2023
Safety Information in this Manual
Notes, cautions and warnings appear throughout this book to draw your attention to important operational
and safety information.
A “NOTE” marks a short message to alert you to an important detail.
A “CAUTION” appears with information that is important for protecting your equipment and ensuring
performance.
A “WARNING” appears with information that is important for protecting you, others and equipment from
damage. Pay very close attention to all warnings that apply to your application.
This symbol (an exclamation point in a triangle) precedes a general CAUTION or WARNING
statement.
This symbol (a lightning bolt in a lightning bolt in a triangle) precedes an electric shock
hazard CAUTION or WARNING safety statement.
Copyright
The documentation and the software included with this product are copyrighted 2022 by FDC, all rights are
reserved. No part of this manual may be reproduced/copied/translated or transmitted in any form or by any
means without the prior written permission of FDC.
Contact Information
Future Design Controls, Inc.
7524 West 98th Place, P.O. Box 1196
Bridgeview, IL 60455 USA
888.751.5444 - Office:
888.307.8014 - Fax
866.342.5332 - Technical Support
E-mail: [e-mail]
Website: http://www.futuredesigncontrols.com

L22/L62/L42 Process Limit Control
3
TABLE OF CONTENTS
1 Introduction ................................................................................................................5
1.1 Why Use a Limit Control?..........................................................................................5
1.2 Features....................................................................................................................5
1.3 Specifications............................................................................................................6
1.4 Ordering Code...........................................................................................................9
1.4.1 L42 Ordering Code ..........................................................................................................................9
1.4.2 L62 Ordering Code ........................................................................................................................10
1.4.3 L22 Ordering Code ........................................................................................................................11
1.4.4 Accessories ...................................................................................................................................11
1.4.5 Related Products ...........................................................................................................................11
1.5 Programming Port...................................................................................................12
1.6 Keys and Displays...................................................................................................13
1.6.1 Keypad Operation..........................................................................................................................14
1.6.2 Display Operation ..........................................................................................................................15
1.7 Menu Navigation .....................................................................................................16
1.7.1 User Access Menu.........................................................................................................................17
1.7.1.1 Reference Data ......................................................................................................................17
1.7.2 Setup Menu ...................................................................................................................................18
1.7.2.1 Basic Menu (bASE)................................................................................................................19
1.7.2.2 Communication Menu (CoMM) ..............................................................................................20
1.7.2.3 User Select Menu (SEL).........................................................................................................20
1.7.2.4 Event Input Menu (EI) ............................................................................................................21
1.7.2.5 Alarm Menu (ALRM)...............................................................................................................21
1.7.2.6 Output Menu (OUT)................................................................................................................22
1.7.3 Calibration Menu............................................................................................................................23
1.8 Parameter Availability..............................................................................................24
1.9 Parameter Description.............................................................................................26
2 Installation and Wiring.............................................................................................32
2.1 Enclosure Guidelines ..............................................................................................32
2.2 Mounting .................................................................................................................32
2.2.1 L42 Dimensions.............................................................................................................................33
2.2.2 L62 Dimensions.............................................................................................................................34
2.2.3 L22 Dimensions.............................................................................................................................35
2.3 Wiring Precautions..................................................................................................36
2.3.1 L42 Terminal Connections.............................................................................................................36
2.3.2 L62 Terminal Connections.............................................................................................................37
2.3.3 L22 Terminal Connections.............................................................................................................37
2.4 Power Wiring...........................................................................................................38
2.5 Sensor Installation...................................................................................................38
2.5.1 Sensor Input Wiring.......................................................................................................................39
2.6 Limit Control Output Wiring.....................................................................................40
2.7 Alarm Wiring............................................................................................................41
2.7.1 Alarm 1 (Output 2) .........................................................................................................................41
2.7.2 Alarm 2...........................................................................................................................................41
2.7.3 Alarm 3...........................................................................................................................................41

L22/L62/L42 Process Limit Control
4
2.8 Event Input Wiring...................................................................................................42
2.9 Retransmission Wiring ............................................................................................42
2.10 RS-485 Serial Communication Wiring...................................................................43
3 Configuration............................................................................................................44
3.1 Security...................................................................................................................44
3.1.1 Calibration Security........................................................................................................................45
3.2 Input Settings ..........................................................................................................45
3.2.1 Digital Filter....................................................................................................................................46
3.2.2 User Calibration (PV Offset)..........................................................................................................47
3.3 Limit (Output 1) Settings..........................................................................................48
3.4 Output 2 (Limit Annunciator/Alarm).........................................................................49
3.5 Alarm Settings.........................................................................................................49
3.6 User Select Menu Settings......................................................................................51
3.7 Display Mode ..........................................................................................................51
3.8 Power Up Mode.......................................................................................................52
3.9 Communication Settings .........................................................................................53
3.10 Retransmit Settings...............................................................................................54
3.11 Event Input Settings..............................................................................................54
3.12 Limit Control Option Settings.................................................................................55
4 Calibration ................................................................................................................57
4.1 Manual Calibration Procedure.................................................................................57
4.1.1 Calibrate Thermocouple Input .......................................................................................................57
4.1.1.1 Calibrate Gain of Cold Junction Compensation.....................................................................58
4.1.2 Calibrate RTD Input.......................................................................................................................59
4.1.3 Calibrate Linear Voltage Input.......................................................................................................59
4.1.4 Calibrate Linear Current Input .......................................................................................................59
5 Communication........................................................................................................60
5.1 Functions Supported...............................................................................................60
5.1.1 Function Code 03: Read Holding Registers..................................................................................60
5.1.2 Function Code 06: Preset Single Register ....................................................................................61
5.1.3 Function Code 16: Preset Multiple Registers................................................................................61
5.2 Exception Responses..............................................................................................62
5.3 Parameter Mapping.................................................................................................62
5.4 Operational Mode and Alarm Status .......................................................................62
5.5 Process Value Scaling ............................................................................................63
5.6 Special Command Codes........................................................................................64
5.6.1 Reset Command............................................................................................................................64
5.6.2 Unlock Command ..........................................................................................................................64
5.6.3 Calibrate Input Command..............................................................................................................65
7 Error Codes and Troubleshooting ..............................................................................66
8 State of California Proposition 65 Warning.................................................................67
9 Warranty & Limitations...............................................................................................68

L22/L62/L42 Process Limit Control
5
1 Introduction
The L22, L62 and L42 are FM Approved process limit controls that can be configured either as a high limit,
a low limit or both a high and low limit control.
The limit controls can be powered by either an 11-26 or 90-250 VDC / VAC supply, incorporating a 2 ampere
(resistive) relay output as standard. An optional second output can be used as an annunciator output or as
a separate process alarm. Additional options (depending upon limit control model) include two event inputs,
up to 3 alarm outputs, RS485 communications and retransmit output. Each limit control model features a
universal programmable input with and 18-bit high resolution A to D converter. A fast-sampling rate allows
the process limit controls to respond and protect fast moving processes.
Model No.
Mounting Type
DIN Size
Dimensions
L x W x D (mm)
Depth behind
Panel (mm)
L22
DIN Rail
-
22.5 x 96 x 80
-
L62
Panel Mount
1/16 DIN
48 x 48 x 59
50
L42
Panel Mount
1/4 DIN
96 x 96 x 59
50
1.1 Why Use a Limit Control?
When a temperature control is maintaining the temperature of a furnace or other heating device for example,
a malfunction in the temperature control may result in a rise in furnace temperature resulting in damage to
the heated product or the furnace itself. When a separate process limit control is incorporated into the
control system design, if the temperature rises above the pre-set limit temperature, the limit output will open,
and the heater system circuit can be shut down to disable the heat source. In addition, the limit output will
remain open even when the temperature returns to the normal range requiring the unit to be manually reset.
A manual reset is required for safety limits. This prevents the system from repeatedly restarting without
user intervention as subsequent temperature excursions (in the example above) could result in product or
system damage. The process limit controls also offer low limit operation so that the limit function operates
when the temperature falls below the limit setting value (cooling application).
When an input error occurs, the limit output will open regardless of low or high limit operation to disable the
system and will remain in this condition until the sensor error is corrected and a manual reset is provided.
1.2 Features
The new generation of process limit controls offer a set of unique features including:
•High brightness LCD display
•Universal Input (linear voltage/current, thermocouple and RTD)
•High accuracy 18-Bit A to D input conversion (true 0.1°F resolution for T/C and RTD sensors)
•Fast input sampling rate of 200 msec
•Advanced power-up modes (normal, reset, normal-latch)
•Bidirectional menu navigation
•Direct DIN rial mounting (L22 model only)
•Micro USB programming port (for firmware upgrades and configuration capabilities)
•Up to two event inputs (remote reset/lock, switch limit set points and more)
•Up to three additional process alarm outputs (in addition to primary limit output)
•Optional RS-485 serial communications
•Optional analog retransmit with 15-bit D to A convert for accurate liner current or voltage output

L22/L62/L42 Process Limit Control
6
1.3 Specifications
Specification
L22
L62
L42
Power Supply
90 to 250VAC, 47 to 63Hz, 20 to 28 VAC,47-63Hz / 11 to 40 VDC
Power Consumption
8VA, 4W Maximum
10VA, 5W Maximum.,
12VA, 6W Maximum
Over Voltage
Category
II
Signal Input
Type
Thermocouple (J, K, T, E, B, R, S, N, L, U, P, C, D), RTD (PT100(DIN), PT100(JIS))
Current(mA), Voltage (V, mV)
Resolution
18 Bits
Sampling Rate
5 Times / Second (200msec)
Maximum Rating
-2VDC minimum, 12VDC maximum
Input
Characteristics
Type
Range
Accuracy @ 25°C
Input
Impedance
J
-120°C to 1000°C ( -184°F to 1832°F)
±2°C
2.2 MΩ
K
-200°C to 1370°C (-328°F to 2498°F)
±2°C
2.2 MΩ
T
-250°C to 400°C ( -418°F to 752°F)
±2°C
2.2 MΩ
E
-100°C to 900°C ( -148°F to 1652°F)
±2°C
2.2 MΩ
B
0°C to 1820°C (32°F to 3308°F)
±2°C (200°C to 1800°C)
2.2 MΩ
R
0°C to 1767.8°C (32°F to 3214°F)
±2°C
2.2 MΩ
S
0°C to 1767.8°C (32°F to 3214°F)
±2°C
2.2 MΩ
N
-250°C to 1300°C ( -418°F to 2372°F)
±2°C
2.2 MΩ
L
-200°C to 900°C ( -328°F to 1652°F)
±2°C
2.2 MΩ
U
-200°C to 600°C (-328°F to 1112°F)
±2°C
2.2 MΩ
P
0°C to 1395°C (32°F to 2543°F)
±2°C
2.2 MΩ
C
0°C to 2300°C (32°F to 4172°F)
±2°C
2.2 MΩ
D
0°C to 2300°C (32°F to 4172°F)
±2°C
2.2 MΩ
PT100(DIN)
-210°C to 700°C ( -346°F to 1292°F)
±0.4°C
1.3KΩ
PT100(JIS)
-200°C to 600°C ( -328°F to 1112°F)
±0.4°C
1.3KΩ
mA
-3mA to 27mA
±0.05%
2.5Ω
VDC
-1.3VDC to 11.5VDC
±0.05%
1.5MΩ
mV
0 to 50mV
±0.05%
2.2 MΩ
Temperature Effect
1.5µV /°C for all inputs except mA input, 3.0µV /°C for mA
Sensor Lead
Resistance Effect
Thermocouple: 0.2 µV /°Ω; 3-wire RTD: 2.6°C /Ω of Difference of Resistance of two leads
2-wire RTD: 2.6°C /Ω of Sum of Resistance of two leads
Burn-out Current
200nA
CMRR
120 dB
NMRR
55 dB
Sensor Break
Detection
Sensor open for Thermocouple, RTD and mV inputs, Sensor short for RTD input,
Below 1mA for 4-20mA input, Below 0.25VDC for 1 - 5VDC input, Not available for other inputs.
Sensor Break
Response Time
Within 4 seconds for Thermocouple, RTD and mV inputs, 0.1 second for 4-20mA and 1 - 5VDC inputs.
Digital Filter
Function
First Order
Time Constant
0, 0.2, 0.5, 1, 2, 5, 10, 20, 30, 60 seconds (programmable)
Event Input
Number of Event
Inputs
1
2
2
Logic Low
-10VDC minimum, 0.8VDC maximum.
Logic High
2VDC minimum, 10VDC maximum
Functions
Remote Lock, Remote Reset Output1, HSP2, LSP2, HLS2, HSP3, LSP3, HLS3, Reset Alarm1, Reset
Alarm2, Reset Alarm 3, Reset All Alarms, Cancel Latch, Reset Reference data
Output 1
Limit Control
Function
High Limit, Low Limit and High / Low Limit
Type
Relay, Source Voltage

L22/L62/L42 Process Limit Control
7
Specification
L22
L62
L42
Relay Type
Form A
Relay Rating
2A, 240VAC, 200000 Life Cycles for Resistive Load
Sourced Voltage
5VDC/30mA, Current Limiting Resistance 66Ω, 14VDC/40mA
Output 2 / Alarm 1
Limit Control
Function
Annunciator
Type
Relay, Source Voltage
Relay Type
Form A
Relay Rating
2A,240V AC,200000 Life Cycles for Resistive Load
Sourced Voltage
5VDC/30mA, Current Limiting Resistance 66Ω, 14VDC/40mA
Alarm 2 and Alarm 3
Relay Type
Form A
Maximum Rating
2A, 240VAC, 200000 Life Cycles for Resistive Load
Alarm Functions
Process High, Process Low
Alarm Mode
Normal, Latching, Normal Reverse, Latching Reverse
Data Communication
Interface
RS485 (serial)
Protocol
Modbus RTU (slave)
Address
1 to 247
Baud Rate
2400, 4800, 9600, 14.4K, 19.2K, 28.8K, 38.4K, 57.6K, 115K (programmable)
Parity Bit
None, Even or Odd
Stop Bit
1
Data Length
8
Communication
Buffer
160 Bytes
Analog Retransmission
Output Signal
4-20mA, 0-20 mA,0 - 10VDC
Resolution
15 Bits
Accuracy
±0.05% of Span ± 0.0025% / °C
Load Resistance
0 to 500Ω for current output, 10KΩ minimum for Voltage Output
Output Regulation
0.01% for full load change
Output Setting Time
0.1Second (stable to 99.9%)
Isolation Breakdown
1000VAC min
Integral Linearity
Error
±0.005% of span
Temperature Effect
±0.0025% of span /°C
Saturation Low
0mA or 0VDC
Saturation High
22.2mA or 5.55V,11.1V min
Linear Output
Ranges
0 - 22.2mA (0 - 20mA/4 - 20mA), 0 - 5.55VDC (0 - 5VDC, 1 - 5VDC), 0 - 11.1VDC (0 - 10VDC)
User Interface
Keypad
4 Keys
Display Type
4 Digit LCD Display
No of Display
2
Upper Display Size
0.31” (8mm)
0.58” (15mm)
0.98” (25mm)
Lower Display Size
0.25” (6.5mm)
0.3” (7.8mm)
0.55” (14mm)
Programming Port
Interface
Micro USB
PC Communication
Function
Firmware upgrade
Environmental and Physical Specifications
Operating
Temperature
-10°C to 50°C
Storage
Temperature
-40°C to 60°C
Humidity
0 to 90 % RH (Non-Condensing)

L22/L62/L42 Process Limit Control
8
Specification
L22
L62
L42
Altitude
2000 Meters Maximum
Pollution
Degree II
Insulation
Resistance
20MΩ Minimum (@500V DC)
Dielectric Strength
2000VAC,50/60 Hz for 1 Minute
Vibration
Resistance
10 to 55 Hz, 10m/s2 for 2 Hours
Shock Resistance
200 m/s2 (20g)
Housing
Flame Retardant Polycarbonate
Mounting
DIN-Rail
Panel
Panel
DIN Size
-
1/16
1/4
Dimensions
(W*H*D) (mm)
22.5*96*83
48*48*59
96*96*59
Depth Behind Panel
(mm)
-
50
50
Cut Out Dimensions
(mm)
-
45*45
92*92
Weight (grams)
160
160
290
Approval Standards
Safety
FM Class 3545, UL61010-1, CSA 22.2 No.61010-1-12, EN61010-1 (IEC1010-1), ROHS, REACH
Protective Class
IP50 for the front panel, IP20 for rear terminals and housing. All indoor use.
EMC
EN61326

L22/L62/L42 Process Limit Control
9
1.4 Ordering Code
1.4.1 L42 Ordering Code
FDC - L42 -
Power Input
4: 90 to 250 VAC, 47-63Hz
5: 20 to 28 VAC, 47-63Hz / 11 to 40 VDC
Output 1
1: Form A Relay (2A, 250V)
2: SSRD, 5VDC/30mA (33Ω, ¼W *2)
C: SSRD, 14VDC/40mA (OM94-7)
Output 2 / Alarm 1
0: None
1: Form A Relay (2A, 250V)
2: SSRD, 5VDC/30mA (33Ω, ¼W *2)
C: SSRD, 14VDC/40mA (OM94-7)
Alarm 2 to 3
0: None
1: Form A Relay on Alarm 2 (2A, 250V)
2: Form A Relay on Alarm 2 to 3 (2A, 250V)
Event Inputs
0: None
1: 2 Event Inputs
Option 1
0: None
1: RS485 Modbus RTU Serial Communications
Option 2
0: None
Option 3
0: None
1: Retransmission 4-20mA/0-20mA (CM98-3)
2: Retransmission 0-10VDC (CM98-5)
Option 4
0: None
1: Terminal Cover
Special Code
Standard leave blank
Special order AA-ZZ

L22/L62/L42 Process Limit Control
10
1.4.2 L62 Ordering Code
FDC - L62 -
Power Input
4: 90 to 250 VAC, 47-63Hz
5: 20 to 28 VAC, 47-63Hz / 11 to 40 VDC
Output 1
1: Form A Relay (2A, 250V)
2: SSRD, 5VDC/30mA (33Ω, ¼W *2)
C: SSRD, 14VDC/40mA (OM94-7)
Output 2 / Alarm 1
0: None
1: Form A Relay (2A, 250V)
2: SSRD, 5VDC/30mA (33Ω, ¼W *2)
C: SSRD, 14VDC/40mA (OM94-7)
Alarm 2
0: None
1: Form A Relay (2A, 250V)
Option 1
0: None
1: RS485 Modbus RTU Serial Communications
Option 2
0: None
1: 2 Event Inputs
Option 3
0: None
1: Retransmission 4-20mA/0-20mA (CM98-3)
2: Retransmission 0-10VDC (CM98-5)
3: Alarm 3 Form A relay (2A, 250V)
Option 4
0: None
1: Terminal Cover
Special Code
Standard leave blank
Special order AA-ZZ