M-system 40LV User manual

5-2-55, Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPAN
Phone: [phone] Fax: [phone] E-mail: [e-mail]
EM-9531 Rev.4 P. 1 / 4
INSTRUCTION MANUAL
DC INPUT DIGITAL PANEL METER
(3 1/2 digit, without scaling) MODEL 40LV
BEFORE USE ....
Thank you for choosing M-System. Before use, please check
contents of the package you received as outlined below.
If you have any problems or questions with the product,
please contact M-System’s Sales Office or representatives.
■PACKAGE INCLUDES:
Digital panel meter (body + mounting bracket × 2)..........(1)
Engineering unit sticker label sheet..................................(1)
■MODEL NO.
Confirm Model No. marking on the product to be exactly
what you ordered.
■INSTRUCTION MANUAL
This manual describes necessary points of caution when
you use this product, including installation, connection and
basic maintenance procedures.
POINTS OF CAUTION
■CONFORMITY WITH EU DIRECTIVES
•The equipment must be installed such that appropriate
clearance and creepage distances are maintained to con-
form to CE requirements. Failure to observe these re-
quirements may invalidate the CE conformance.
■POWER INPUT RATING & OPERATIONAL RANGE
•Locate the power input rating marked on the product and
confirm its operational range as indicated below:
24V DC rating: 24V ±20%, approx. 0.5W
■GENERAL PRECAUTIONS
•Before you remove the unit or mount it, turn off the power
supply and input signal for safety.
•Be sure to put the terminal cover on while the power is
supplied.
■ENVIRONMENT
•Indoor use.
•When heavy dust or metal particles are present in the
air, install the unit inside proper housing with sufficient
ventilation.
•Do not install the unit where it is subjected to continuous
vibration. Do not subject the unit to physical impact.
•Environmental temperature must be within 0 to 55°C (32
to 131°F) with relative humidity within 30 to 90% RH in
order to ensure adequate life span and operation.
•Be sure that the ventilation slits are not covered with ca-
bles, etc.
■WIRING
•Make sure for safety that only qualified personnel per-
form the wiring.
•Do not install cables close to noise sources (high frequen-
cy line, etc.).
•Do not bind these cables together with those in which
noises are present. Do not install them in the same duct.
■AND ....
•The unit is designed to function as soon as power is sup-
plied, however, a warm up for 10 minutes is required for
satisfying complete performance described in the data
sheet.

40LV
5-2-55, Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPAN
Phone: [phone] Fax: [phone] E-mail: [e-mail]
EM-9531 Rev.4 P. 2 / 4
COMPONENT IDENTIFICATION
Specifications
■TOP VIEW
■FRONT VIEW ■SIDE VIEW
Mounting Bracket
Sticker Label
Digital Display
■HOW TO REMOVE THE FRONT PANEL AT SPAN CALIBRATION
Hold up the front panel and remove it from downside.
• View without the front panel Span calibration
adjuster
■HOW TO MOUNT THE FRONT PANEL
1) Insert the front panel hook into the case upside slots of
the unit.
2) Push the front panel hook into the case downside slots of
the unit.
INSTALLATION
92
+ 0.8
– 0
45
+ 0.6 – 0
min. 120
min. 75
Panel thickness: 1.6 to 8.0 mm
■PANEL CUTOUT unit: mm
■HOW TO MOUNT THE UNIT ON A PANEL
1) Insert the unit into the panel cutout.
2) Push the mounting brackets into the grooves on both
sides of the rear module, until they hit the panel’s rear
side.
Panel Mounting Bracket

40LV
5-2-55, Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPAN
Phone: [phone] Fax: [phone] E-mail: [e-mail]
EM-9531 Rev.4 P. 3 / 4
TERMINAL CONNECTIONS
Connect the unit as in the diagram below or refer to the connection diagram on the top of the unit.
■EXTERNAL DIMENSIONS unit: mm (inch)
92 (3.62)
45 (1.77)
85 (3.35)11
(.43)
96 (3.78)
96 (3.78)
48 (1.89)
103 (4.06)
10–M3 SCREW
TERMINALS
■TOP VIEW
■FRONT VIEW ■SIDE VIEW
■REAR VIEW
12345678910
6.4 (.25)
12 (.47)
4 (.16)
■CONNECTION DIAGRAM
COM
HOLD
DP3
DP2
DP1
9
10
7
2
3
4
6
5
1
+
–
+
–
POWER
INPUT
DECIMAL POINT
POSITION
WIRING INSTRUCTIONS
■SCREW TERMINAL
Torque: 0.6 N·m
■SOLDERLESS TERMINAL
Refer to the drawing below for recommended ring tongue
terminal size. Spade tongue type is also applicable.
Applicable wire size: 0.25 to 1.65 mm2(AWG 22 to 16)
Recommended manufacturer: Japan Solderless Terminal
MFG.Co.Ltd, Nichifu Co.,ltd
6 (.24) max
3.3 (.13) max
mm (inch)

40LV
5-2-55, Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPAN
Phone: [phone] Fax: [phone] E-mail: [e-mail]
EM-9531 Rev.4 P. 4 / 4
DECIMAL POINT POSITION
Close across the terminals as following.
Use a short-circuit bar or a short wire.
DP1 (×101) LED ON Terminal 7 to 3
DP2 (×102) LED ON Terminal 6 to 3
DP3 (×103) LED ON Terminal 5 to 3
103102101
DP3 DP1
100
DP2
DISPLAY HOLD COMMAND
Connect the contacts across HOLD to COM.
L
HOLD
H
L
HOLD
H
Twisted pair cable
Twisted pair cable
Relay
Photo-Coupler
COM
HOLD
COM
HOLD
(a) Photo-Coupler
(b) Relay
MAINTENANCE
Regular calibration procedure is explained below:
■CALIBRATION
1) Turn on the power supply on the unit and keep on sup-
plying the voltage for 10 minutes or more.
2) Remove the front panel.
3) Make a line between terminals 1 to 2 short-circuited and
confirm that the display becomes “000.”
4) Connect a signal generator to the unit, adjust the signal
to the values in the following table and confirm the dis-
plays.
MODEL SIGNAL VALUE DISPLAY VALUE
40LV-V1-R 199.0 mV 1990
40LV-V2-R 1.990 V 1990
40LV-V3-R 19.90 V 1990
40LV-V4-R 199.0 V 1990
40LV-A1-R 199.0 µA 1990
40LV-A2-R 1.990 mA 1990
40LV-A3-R 19.90 mA 1990
40LV-A4-R 199.0 mA 1990
40LV-A5-R 1.990 A 1990
5) If the display value is different from the signal value, ad-
just it turning the span adjuster at “1990.”
6) Mount the front panel to the unit again and confirm that
the measurement accuracy is according to the range.
LIGHTNING SURGE PROTECTION
M-System offers a series of lightning surge protectors for
protection against induced lightning surges. Please contact
M-System to choose appropriate models.