LM Series Datasheet by Honeywell Sensing and Productivity Solutions
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Microcontroller Unit (MCU)
LCD Hour Meters/Counters
LM Series
Datasheet
00°
Manufactured for harsh,
environments
2sensing.honeywell.com
What makes our hour meters/counters better?
Backlighting and large display ease readability
IP67 (front) and IP66 (rear) rating provides enhanced durability
Longer reset time can minimize the possibility of a reset
malfunction
Multiple bezel options allow for different aesthetic looks and
accommodates various space requirements
Optional bending terminal blades allow for use where space
is at a premium
LM Series
Microcontroller Unit (MCU) LCD Hour Meters/Counters
Honeywell’s MCU (microcontroller unit) LCD (liquid crystal display) Hour Meters and Counters, LM Series, are sealed digital
instruments designed to monitor and record elapsed running time, normally displayed in hours and tenths of hours. These devices
are used to log running time of equipment or counts of equipment use for potential use in transportation applications to assure
proper maintenance of expensive machines or systems, as well as warranty claims and rental-use tracking. This maintenance
typically involves replacing, changing, or checking parts, belts, filters, oil, and lubrication of heavy duty equipment, or running
condition of engines, motors, and blowers, to name a few.
These devices can feature up to a 40-year memory data retention (without power) to provide customers with a long data retention
capability within their desired application. The large 7 mm display eases readability and offers backlight options and a running
indicator. Sealing to IP67 (front)/IP66 (rear) designed to provide enhanced durability. The hour meter also features a long reset time
to offer customers the protection against malfunction of reset.
The LM Series offers customization options including the customer’s logo, Honeywell logo, or a black face, as well as numerous
customizable bezel options.
Manufactured for harsh,
rugged environments
3
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Features
and Benefits
Features
and Benefits
EASY TO READ
The large 7 mm display on LM Series hour meters/counters eases readability and
offers options of backlight and running indicators.
RELIABLE AND DURABLE
The LM Series’ IP67 (front)/IP66 (back) environmental sealing creates a rugged
package design well suited for harsh environments. The mounting assembly’s
durable design helps make installation accurate and efficient. Their shock and
vibration resistance allows for use in a wide variety of heavy-duty applications.
CUSTOMIZABLE
LM Series hour meters/counters can be customized with the customer’s logo,
as well as numerous customizable bezel options. Meters are offered with
two function types: hour meter (measures time) or counter (measures number of
instances, starts, etc.). Optional bending terminal blades allow for use where
space is at a premium.
Up to 40 years of data retention without power!
TRANSPORTATION
Monitors and records elapsed running time in
• Agricultural vehicles
• Blowers
• Engines
• Heavy-duty construction vehicles
• Heavy-duty trucks
• Material-handling equipment
• Mowers
Potential Applications
Great for tracking rental product use!
4sensing.honeywell.com
LM Series
Table 1. Specifications
Characteristic Parameter
Digital range hours 0 to 99,999.9 hours with auto turn over
Digital range counts 0 to 999,999 counts with auto turn over
Digital height 7 mm
Backlight color (optional) blue
View angle 12 o’clock
Running indicator yes
Accuracy ±200 ppm/hour
Operating voltage range 9 V to 64 V dc/ac (50 Hz to 500 Hz); 50 Hz for counter enable
Sealing IP67 (front); IP66 (back)
Shock 55 g per SAE J1378; 75 g per MIL-M-3917D
Vibration 20 g per SAE J1378; 10 g per MIL-M-3917D
Humidity 95 % non-condensing at 38 °C [100.4 °F]
Operating temperature -40 °C to 85 °C [-40 °F to 185 °F]
Storage temperature -50 °C to 90 °C [-58 °F to 190 °F]
Transient immunity
load dump – yes
inductive – yes
EMI – yes
reverse polarity – yes
Power consumption 0.8 mA @ 12 Vdc
Panel mounting multiple options, dependent upon bezel shape
Start time <1 s; if including all “8” check, then >1 s
Material – case Makroblend®
Material – lens Lexan®
Case depth 1.35 in (including terminals)
Termination 1/4 in blade (straight and bending); 3/16 in blade (straight and bending)
5
sensing.honeywell.com
Microcontroller Unit (MCU) LCD Hour Meters/Counters
PRODUCT NOMENCLATURE
LM
Type
H
C
Hour meter
Counter
Function
Type
H
HShape: Diamond
Bezel: Black
Shape and
Bezel
H
LM Series
MCU (Micr
o-
controller
Unit)
LCD Hour
Meter
F
Connector
Definition
—
A
C
1/4 in blade
3/16 in blade
Terminal
Type
A
SShape: Standard
BShape: Round
Bezel: Black
WShape: Round
Bezel: Chrome
DShape: Diamond
Bezel: None
CShape: Rectangle
F
+ : Positive
- : Negative
B : Backlight (blue)
E : Enable
3+ : Positive
- : Negative
E : Enable
4
+ : Positive
- : Negative
R : Reset
E : Enable
2+ : Positive
- : Negative
S
9 Vdc/Vac to
64 Vdc/Vac
Voltage
Range
S
H
Logo
Type
H
N
T
1
Honeywell
No logo
Hours
indicator
Customer’s
logo #1
Multiple packaging
and component options
are recommended.
Type 11: Bulk packing
with wires and
fasteners.
Type 21: Box per
product packing with
wires and
fasteners.
Please refer to
Honeywell modification
code, or contact
your Honeywell sales
representative, or an
authorized Honeywell
Distributor.
See Table 2 (below)
for specific details.
Modification
Code
—XX
M
N
1/4 in
bending blade
3/16 in
bending blade
2Customer’s
logo #2
NOTE: Codes “1” to “9”
and “A” to “Z” (except
“H”, “N”, and “T”) are
defined for customers’
different logo/type
requirements.
Table 2. Modification Codes
Modification
Code
Product
Shape
Box/Meter Wrap/
Marking
Hour Meter
Terminal
Wires
Fastenings Product Qty
Per Carton(s)
Instruction
Sheet Qty
11
Diamond,
Standard,
Rectangle
Bulk pack, no box
marking
1 wire per
terminal
Included
96 pieces per
carton 1
12 No fastenings included
13 No wires
included
Included
14 No fastenings included
21 Diamond,
Standard,
Rectangle,
Round
Box per product,
box marked with
part number
1 wire per
terminal
Included
24 pieces per
carton 24
22 No fastenings included
23 No wires
included
Included
24 No fastenings included
31
Round Bulk pack, no box
marking
1 wire per
terminal
Included
48 pieces per
carton 1
32 No fastenings included
33 No wires
included
Included
34 No fastenings included
6sensing.honeywell.com
LM Series
Catalog Listing Function Shape Bezel Connectors Terminal
Type Logo
LM-CS3CS-N11 Counter Standard – 3 3/16 in blade None
LM-CS3CS-N13 Counter Standard – 3 3/16 in blade None
LM-CS3CS-N21 Counter Standard – 3 3/16 in blade None
LM-CS3CS-N22 Counter Standard – 3 3/16 in blade None
LM-CS3CS-N23 Counter Standard – 3 3/16 in blade None
LM-CS4AS-N11 Counter Standard – 4 (reset) 1/4 in blade None
LM-HB2AS-H31 Hour Meter Round Black 2 1/4 in blade Honeywell
LM-HB3AS-H31 Hour Meter Round Black 3 1/4 in blade Honeywell
LM-HB4AS-H31 Hour Meter Round Black 4 (reset) 1/4 in blade Honeywell
LM-HC3CS-H11 Hour Meter Rectangle – 3 3/16 in blade Honeywell
LM-HC3CS-H21 Hour Meter Rectangle – 3 3/16 in blade Honeywell
LM-HC3CS-H22 Hour Meter Rectangle – 3 3/16 in blade Honeywell
LM-HD2AS-H11 Hour Meter Diamond None 2 1/4 in blade Honeywell
LM-HD2AS-N11 Hour Meter Diamond None 2 1/4 in blade None
LM-HD2AS-N21 Hour Meter Diamond None 2 1/4 in blade None
LM-HD2AS-N22 Hour Meter Diamond None 2 1/4 in blade None
LM-HD3AS-H11 Hour Meter Diamond None 3 1/4 in blade Honeywell
LM-HD3AS-H13 Hour Meter Diamond None 3 1/4 in blade Honeywell
LM-HD3AS-N11 Hour Meter Diamond None 3 1/4 in blade None
LM-HD4AS-H11 Hour Meter Diamond None 4 (reset) 1/4 in blade Honeywell
LM-HD4AS-N11 Hour Meter Diamond None 4 (reset) 1/4 in blade None
LM-HH2AS-H11 Hour Meter Diamond Black 2 1/4 in blade Honeywell
LM-HH2AS-H21 Hour Meter Diamond Black 2 1/4 in blade Honeywell
LM-HH2AS-H22 Hour Meter Diamond Black 2 1/4 in blade Honeywell
LM-HH2AS-N11 Hour Meter Diamond Black 3 1/4 in blade None
LM-HH3AS-H11 Hour Meter Diamond Black 3 1/4 in blade Honeywell
LM-HH3AS-H21 Hour Meter Diamond Black 3 1/4 in blade Honeywell
LM-HH3AS-H22 Hour Meter Diamond Black 3 1/4 in blade Honeywell
LM-HH3AS-N11 Hour Meter Diamond Black 3 1/4 in blade None
LM-HH4AS-H11 Hour Meter Diamond Black 4 (reset) 1/4 in blade Honeywell
LM-HH4AS-H21 Hour Meter Diamond Black 4 (reset) 1/4 in blade Honeywell
LM-HH4AS-H22 Hour Meter Diamond Black 4 (reset) 1/4 in blade Honeywell
LM-HH4AS-N11 Hour Meter Diamond Black 4 (reset) 1/4 in blade None
LM-HHFAS-H11 Hour Meter Diamond Black 4 (backlight) 1/4 in blade Honeywell
LM-HHFAS-H21 Hour Meter Diamond Black 4 (backlight) 1/4 in blade Honeywell
LM-HHFAS-H22 Hour Meter Diamond Black 4 (backlight) 1/4 in blade Honeywell
LM SERIES ORDER GUIDE
7
sensing.honeywell.com
Microcontroller Unit (MCU) LCD Hour Meters/Counters
LM SERIES ORDER GUIDE, CONTINUED
Catalog Listing Function Shape Bezel Connectors Terminal
Type Logo
LM-HS2AS-H11 Hour Meter Standard – 2 1/4 in blade Honeywell
LM-HS2AS-H21 Hour Meter Standard – 2 1/4 in blade Honeywell
LM-HS2AS-N21 Hour Meter Standard – 2 1/4 in blade None
LM-HS2AS-N22 Hour Meter Standard – 2 1/4 in blade None
LM-HS2AS-T11 Hour Meter Standard – 2 1/4 in blade Hours indicator
LM-HS3AS-H11 Hour Meter Standard – 3 1/4 in blade Honeywell
LM-HS3AS-H21 Hour Meter Standard – 3 1/4 in blade Honeywell
LM-HS3CS-N11 Hour Meter Standard – 3 3/16 in blade None
LM-HS4AS-H11 Hour Meter Standard – 4 (reset) 1/4 in blade Honeywell
LM-HSFAS-H11 Hour Meter Standard – 4 (backlight) 1/4 in blade Honeywell
LM-HW2AS-H31 Hour Meter Round Chrome 2 1/4 in blade Honeywell
LM-HW3AS-H31 Hour Meter Round Chrome 3 1/4 in blade Honeywell
LM-HW4AS-H31 Hour Meter Round Chrome 4 (reset) 1/4 in blade Honeywell
8sensing.honeywell.com
LM Series
0.480 in
0.470 in
0.955 in
0.945 in
1.455 in
1.445 in
1.755 in
1.745 in
2X Ø 0.150 in ±0.005 in HOLES
2.13 in
1.75 in
1.25 in
0.957 in
(0.33 in) (0.89 in)
(1.41 in)
2X Ø 0.15 in
1.35 in
0.79 in
0.75 in
0.14 in
0.08 in
0.18 in
10°
0.22 in
±0.02 in
DIAMOND GEOMETRY
WITH BEZEL
LOGO
LENS: BACKGROUND BLACK
WITH WHITE LETTERING
LABEL PRINTING:
PART NO, VOLTA GE, DATE CODE, UL RECOGNIZED
SYMBOL WITH (FILE NO) XXXXXX & CE SYMBOL, MAX POWER,
PRODUCING AREA SHOULD BE PRINTED ON LABEL.
TERMINALS TO ACCEPT GM TERMINAL
2962447 AND GM CONNECTOR 2962448
OR EQUIVALENT.
CASE TERMINAL
#6-32 X .50 -REF
ROUND HEAD
MACHINE SCREW
CLASS 2 THREAD
#6 INTERNAL
SHAKEPROOF
TYPE 12
#6-32 NC2B
THREADS NUT
BENDING TERMINAL
(OPTIONAL, CUSTOMER
DEFINE)
R 0.030 in ±0.005 typ.
MOUNTING HOLES
Figure 2. Standard-Shaped Hour Meter Dimensions
Figure 3. Round-Shaped Hour Meter Dimensions
(0.957 in)
0.955 in
0.945 in
1.455 in
1.445 in
1.60 in
1.08 in
(0.330 in)
1.79 in
0.79 in
0.75 in
0.10 in
1.44 in max.
0.94 in max.
(0.44 in)
0.88 in
(0.18 in)
0.36 in
10°
STANDARD GEOMETRY
MOUNTING HOLE
BENDING TERMINAL
(OPTIONAL, CUSTOMER
DEFINE)
0.22 in
±0.02 in
4X R 0.030 in ±0.005 in
RETAINER
LABEL PRINTING:
PART NO, VOLTAGE, DATE CODE, UL RECOGNIZED
SYMBOL WITH (FILE NO) XXXXXX & CE SYMBOL, MAX POWER,
PRODUCING AREA SHOULD BE PRINTED ON LABEL.
TERMINALS TO ACCEPT GM TERMINAL 2962447
AND GM CONNECTOR 2962448 OR EQUIVALENT.
1.44 in max.
(0.18 in)
0.94 in max.
0.88 in
(0.44 in)
1.33 in
0.98 in
0.73 in
0.12 in
0.30 in
Ø 2.00 in
Ø 2.27 in Ø 2.41 in
MOUNTING HOLE
CUP RETAINER & HEX NUT
& LOCKWASHER
BEZEL DIAL
LOGO
LABEL PRINTING: PART NO, VOLTAGE, DATE CODE,
UL RECOGNIZED SYMBOL WITH (FILE NO) XXXXXX
& CE SYMBOL, MAX POWER, PRODUCING AREA SHOULD
BE PRINTED ON LABEL.
TERMINALS TO ACCEPT GM TERMINAL 2962447
AND GM CONNECTOR 2962448 OR EQUIVALENT.
ROUND GEOMETRY
Ø 2.00 in ±0.005 in
CASE
Figure 1. Diamond-Shaped Hour Meter Dimensions
DIMENSIONAL DRAWINGS
9
sensing.honeywell.com
Microcontroller Unit (MCU) LCD Hour Meters/Counters
Figure 4. Rectangle-Shaped Hour Meter Dimensions
Figure 5. Diamond-Shaped (No Bezel) Hour Meter Dimensions
, CAUTION
Be cautious when working around and connecting to the LM
Series’ terminals, especially those other than the positive
terminal (+) as there is no eletrical protection on the negative (-),
reset, enable, and/or backlight terminals.
1.902 in
0.957 in
1.291 in
0.157 in
0.72 in
1.768 in
0.87 in
1.77 in
0.88 in
R 0.047
LABEL PRINTING: PART NO, VOLTAGE, DATE CODE, UL
RECOGNIZED SYMBOL WITH (FILE NO) XXXXXX & CE
SYMBOL, MAX POWER, PRODUCING AREA SHOULD
BE PRINTED ON LABEL.
BRACKET
(50067657-001)
NUT
(50067656-001)
LOCK WASHER
(50067695-001)
MOUNTING HOLE
RECTANGLE GEOMETRY
1.45 in
1.44 in max.
1.75 in
0.95 in
4X R 0.03
2.05 in
1.75 in
(0.957 in)
0.48 in
(0.330 in)
1.03 in
1.35 in
0.79 in
0.75 in
0.10 in (0.44 in)
(0.88 in)
0.18 in
0.94 in max.
10°
DIAMOND GEOMETRY
WITHOUT BEZEL
TERMINAL
#6-32 X .50 -REF
ROUND HEAD
MACHINE SCREW
CLASS 2 THREAD
#6 INTERNAL
SHAKEPROOF
TYPE 12
#6-32 NC2B
THREADS NUT
OPTIONAL DELUXE BEZEL
(GASKET FLANGE)
BENDING TERMINAL
(OPTIONAL, CUSTOMER
DEFINE)
2 X Ø 0.150 in holes
2 X Ø 0.150 in holes
0.22 in
±0.02 in
MOUNTING HOLES
LABEL PRINTING:
PART NO, VOLTA GE, DATE CODE, UL RECOGNIZED
SYMBOL WITH (FILE NO) XXXXXX & CE SYMBOL,
MAX POWER,PRODUCING AREA SHOULD BE PRINTED ON LABEL.
BACKGROUND BLACK WITH WHITE LETTERING
TERMINALS TO ACCEPT GM TERMINAL 2962447
AND GM CONNECTOR 2962448 OR EQUIVALENT.
CASE - BLACK
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LM Series
Figure 6. LM Series Mounting and Fasteners (if applicable)
11
sensing.honeywell.com
Microcontroller Unit (MCU) LCD Hour Meters/Counters
ADDITIONAL INFORMATION
The following associated literature is available on the Honeywell web
site at sensing.honeywell.com:
• Product installation instructions
• Product range guide
• Product line guide
• Product application-specific information
– Case study: True time stamp hour meters
– Industrial product line card
– Application note: Sensors and switches for potential medical
applications
– Application note: Sensors and switches in front loaders
– Application note: Sensors and switches in mobile cranes
– Appilcation note: Sensors and switches in oxygen concentrator
applications
WARNING
PERSONAL INJURY
DO NOT USE these products as safety or emergency stop
devices or in any other application where failure of the product
could result in personal injury.
Failure to comply with these instructions could result in
death or serious injury.
WARNING
MISUSE OF DOCUMENTATION
• The information presented in this product sheet is for
reference only. Do not use this document as a product
installation guide.
• Complete installation, operation, and maintenance
information is provided in the instructions supplied with
each product.
Failure to comply with these instructions could result in
death or serious injury.
WARRANTY/REMEDY
Honeywell warrants goods of its manufacture as being free of
defective materials and faulty workmanship. Honeywell’s standard
product warranty applies unless agreed to otherwise by Honeywell
in writing; please refer to your order acknowledgement or consult
your local sales office for specific warranty details. If warranted
goods are returned to Honeywell during the period of coverage,
Honeywell will repair or replace, at its option, without charge those
items it finds defective. The foregoing is buyer’s sole remedy
and is in lieu of all other warranties, expressed or implied,
including those of merchantability and fitness for a particu-
lar purpose. In no event shall Honeywell be liable for conse-
quential, special, or indirect damages.
While we provide application assistance personally, through our
literature and the Honeywell website, it is up to the customer to
determine the suitability of the product in the application.
Specifications may change without notice. The information we
supply is believed to be accurate and reliable as of this printing.
However, we assume no responsibility for its use.
Honeywell
006178-4-EN IL50 GLO
April 2015
Copyright © 2015 Honeywell International Inc. All rights reserved.
®Makroblend is a registered trademark of Bayer Aktiengesellschaft
®Lexan is a registered trademark of GE Plastics
Sensing and Control
Honeywell
1985 Douglas Drive North
Golden Valley, MN 55422
honeywell.com
Find out more
Honeywell serves its customers
through a worldwide network
of sales offices, representatives
and distributors. For application
assistance, current specifications,
pricing or name of the nearest
Authorized Distributor, contact
your local sales office.
To learn more about Honeywell’s
sensing and control products,
call +1-815-235-6847 or
1-800-537-6945,
visit sensing.honeywell.com, or
e-mail inquiries to
info.sc@honeywell.com
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