Instruction Manual
Latch module
MG80-LM
2020.7
Printed in Japan
©2019 Magnescale Co., Ltd.
MG80-LM
2-A02-856-0B
45 Suzukawa, Isehara-shi, Kanagawa 259-1146, Japan
For foreign customers
Note: is product (or technology) may be restricted by the government in your country. Please make sure
that end-use, end user and country of destination of this product do not violate your local government
regulation.
[For U.S.A. and Canada]
THIS CLASS A DIGITAL DEVICE COMPLIES WITH PART15 OF
THE FCC RULES AND THE CANADIAN ICES-003. OPERATION
IS SUBJECT TO THE FOLLOWING TWO CONDITIONS.
(1) THIS DEVICE MAY NOT CAUSE HARMFUL INTERFERENCE,
AND
Read all the instructions in the manual carefully before use and strictly
follow them.
Keep the manual for future references.
Safety Precautions
Magnescale Co., Ltd. products are designed in full consideration of safety.
However, improper handling during operation or installation is dangerous
and may lead to re, electric shock or other accidents resulting in serious
injury or death. In addition, these actions may also worsen machine
performance.
erefore, be sure to observe the following safety precautions in order to
prevent these types of accidents, and to read these “Safety Precautions”
before operating, installing, maintaining, inspecting, repairing or otherwise
working on this unit.
(2) THIS DEVICE MUST ACCEPT ANY INTERFERENCE
RECEIVED, INCLUDING INTERFERENCE THAT MAY CAUSE
UNDERSIGNED OPERATION.
CET APPAREIL NUMÉRIQUE DE LA CLASSE A
EST CONFORME À LA NORME NMB-003 DU CANADA.
Warning Indication Meanings
e following indications are used throughout this manual, and their
contents should be understood before reading the text.
Symbols requiring attention Symbols prohibiting actions
CAUTION DO NOT DISASSEMBLE
Warning Failing to follow the precaution items given below
may lead to severe injury or death.
• Do not open the cover of the MG80-LM to disassemble or modify
the unit, as this may result in burns or injury.
ese actions may also damage the internal circuitry.
Caution Failing to follow the precaution items given below
may lead to injury or damage to surrounding
objects.
• e unit does not have an explosion-proof structure.
erefore, do not use the unit in an atmosphere charged with
in ammable gases as this may result in re.
• Be sure to turn o the power before connecting or disconnecting
power and signal connectors in order to prevent damage or
misoperation.
General precautions
• Before and during operations, be sure to check that our products
function properly.
• Provide adequate safety measures to prevent damages in case our
products should develop malfunctions.
• Use outside indicated speci cations or purposes and modi cation of our
products will void any warranty of the functions and performance as
speci ed of our products.
• When using our products in combination with other equipment,
the functions and performances as noted in this manual may not be
attained, depending on operating and environmental conditions.
5. Dimensions
Unit : mm
1. Overview
is product is used in combination with the main module (MG80-
MA) and display unit (LT80-NE). During operation, also refer to the
display unit Operating Manual.
Connectable products
Product name Serial No. / Version
MG80-MA Serial No. 200001 or later
MG80-CM Serial No. 200001 or later
LT80-NE So ware version 1.04.00 or later
2. Name and Function of Each Part
POWER lamp
Lights green when the power is on.
Reference point lamp
Once the reference point signal of the encoder is detected, the
lamp lights yellow (solid).
Encoder alarm lamp
is lamp lights red when the measuring unit connected to the
counter module is in alarm status.
Latch alarm lamp
is lamp lights red when the latch module is in alarm status.
Reset button
If an alarm has occurred in the latch module during operation
check or test operation, this button can be used to directly
perform initialization (reset) on the respective latch module
without inputting a communication command or external
signal.
Note
is reset is performed only for individual latch modules. e
main module is not reset.
Encoder connector
is connects the encoder that latches the data.
Note
Connecting the wrong encoder can cause a breakdown.
Module connector
is connects the counter modules.
Note
Always connect the latch module next to the main module.
24
1 3 5
A
6
8
7 9
18 20
19
+5V+5V
12 14 16
11 13 15 17
0 V0 V0 V
B Z +5V
10
HONDA
1
11
2
12
3
13
4
14
5
15
6
16
7
17
8
18
9
19
10
20
3. Encoder input connector
Connector used : PCR-E20LMDT (Honda Tsushin)
Accessory
Plug : PCR-E20FS (Honda Tsushin)
Case : PCR-E20ELB (Honda Tsushin)
Connector pin assignment
No. Signal
name
Description No. Signal
name
Description
1 A Encoder signal input A 11
2AEncoder signal input A 12 0V Signal and power supply GND
3 B Encoder signal input B 13
4 B Encoder signal input B 14 0V Signal and power supply GND
5 Z Encoder signal input Z 15
6 Z Encoder signal input Z 16 0V Signal and power supply GND
717
8 18 +5V Encoder power supply
9 +5V Encoder power supply 19
10 20 +5V Encoder power supply
Note
• Do not connect anything to blank pins.
• is product is a voltage di erential line receiver input.
• When using an encoder without a reference point, do not connect Z and
Z.
• e +5 V supply current is MAX 500 mA.
• Be careful not to connect the power supply in reverse. Reverse connection
may damage this product and the connected encoder.
• ree pins are provided for each of +5 V and 0 V, but it is not necessary
to use all of the pins.
• e connector metal part and the connector case are connected to FG
and separated from 0 V.
• Connect the shielded wires of the encoder cable to the connector case.
4. Speci cations
Model name MG80-LM
Supply voltage DC 10.8 to 26.4 V
(supplied from MG80-MA)
Power consumption 2.0 W or less + Power of connected
encoder
Encoder input signals A/B/Reference point, voltage di erential
type line receiver input (EIA-422 compliant)
It is not necessary to use the reference
point.
Power that can be
supplied to the encoder
DC5 V, 500 mA (MAX)
A/B quadrature input
signal minimum phase
di erence
50 ns
Reference point The reference point lamp (REF) lights
after reference point detection when
loading reference points.
Alarms Encoder not connected or disconnected:
Encoder alarm lamp (EAL) lights
Latch signal A/B quadrature interval shorter
than minimum phase di erence time:
Latch alarm lamp (LAL) lights
Operating temperature/
humidity range
0 to + 50 °C (No condensation)
Storage temperature/
humidity range
–20 to + 60 °C (20 to 90% RH)
Mass Approximately 130 g
Mounting method DIN rail
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