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Power Monitoring & DAQ

Yokogawa GM10 Power Monitoring
Product Overview
The GM10 is a modular data acquisition and logging station that utilizes an expandable housing linked to the module base. This design enables the use of a wide range of I/O modules which can be expanded by one or multiple at a time. This data can be logged and changed in real time without additional software.


The GM10 is a scalable modular block I/O data acquisition system and data-logging platform that is designed for easy installation and maintenance and requires no programming. It supports remote web-based or wireless configuration and monitoring via Bluetooth connection. The unit can be DIN rail mounted, wall mounted or act as a standalone desktop application. The Yokogawa GM10 delivers industry leading reliability and measurement accuracy. In addition, a wide range of communication protocols guarantee compatibility with your network architecture.


  • Modular housing for up to 10 I/O modules per GM10 unit
  • Measurement capability of up to 420 actual input channels in a multi-unit configuration
  • Internal memory of up to 1.2 GB
  • Installation flexibility (no attachments required)
  • Open front panel for easy insertion or removal of modules
  • 4 alarms per measurement channel: high limit, low limit, difference high limit, difference low limit, rate of change increase, rate of change decrease, delay high, delay low

Enables a scalable data acquisition system

Increase channels by adding additional block modules

YOKOGAWA proprietary block architecture (patent pending)

  • Expand one, or multiple module at a time
  • Unique design houses modules in linked module bases
  • Module base ensures linkage (slide locks and mounting screws also available)
  • Modules can be inserted and removed from the front panel for easy maintenance
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Names of data acquisition module parts

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Comes standard with support for up to 100 ch of measurement (single-unit configuration)

Up to 10 I/O modules can be linked to a single data acquisition module (GM10)

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Installs anywhere

For the desktop, DIN rails, or wall-mounting. No special attachments required.

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Select from a wide range of I/O modules

Gm Image05Select modules according to your application. Noise-resistant, magnetic relay types also available. All modules have removable terminal blocks for easy wiring. The same modules used in the SMARTDAC+ series.

GX90XA-10-U2 Analog input module DC voltage, thermocouple, RTD, contact (semiconductor relay scanner type) 10
GX90XA-10-L1 DC voltage, thermocouple, contact (low withstand voltage) 10
GX90XA-10-T1 DC voltage, thermocouple, contact (electromagnetic relay scanner type) 10
GX90XA-10-C1 DC current (mA) 10
GX90XD Digital input module Remote control input, operation recording, or pulse input 16
GX90YD Digital output module Alarm output  6
GX90WD Digital input/output module Remote control input, operation recording or pulse input/alarm output DI:8/DO:6
GX90XP Pulse input module Pulse input module up to 20kHz 10

Analog input module scan interval and measurement type

TypeChannelsScan interval
Universal (-U2) 10 100ms SSR  √  √  √  √   Universal
Low withstand voltage relay(-L1) 10 500ms SSR  √    √  √   Mid-price
Electromagnetic relay
10 1s Relay  √    √  √   Noise-
DC current input (-C1) 10 100ms SSR          √ mA only

Internal memory and max. I/O channels

TypeInternal memoryMax. input/output channels
GM10-1 500 MB Single-unit configuration 0 to 100
Multi-unit configuration 0 to 100
GM10-2 1.2 GB Single-unit configuration 0 to 100
Multi-unit configuration 0 to 420

Actual values support high precision measurement

Input typeMeasuring accuracy* (typical value)
DCV 20 mV ±(0.01% of reading + 5µV)
6 V (1-5V) ±(0.01% of reading + 2mV)
TC R ±1.1 °C
K (-200 to 500 °C) ±0.2 °C However, -200.0 to 0.0°C: ±(0.15% of reading + 0.2 °C)
T ±0.2 °C However, -200.0 to 0.0°C: ±(0.10% of reading + 0.2 °C)
RTD Pt100 ±(0.02% of reading + 0.2 °C)
Pt100 (high resolution) ±(0.02% of reading + 0.16 °C)

The measuring accuracies noted in the general specifications have a margin of error that takes into account the product's components and the equipment used for adjustment and testing. However, the actual values calculated from the accuracy testing data upon shipment of the instrument from the factory are listed to the left.
* General operating conditions: 23±2 °C, 55±10% RH, supply voltage 90-132, 180-264 VAC, supply frequency within 50/60 Hz ±1%, warm-up of 30 minutes or more, no vibrations or other hindrances to performance.

Supports measurement of up to 420 ch (actual input) by expanding channels across multiple units (multi-unit configuration)

Expand up to 420 ch by using the GX90EX expansion module. (GM10-2) On the GM10-2 large capacity type, up to 1000 ch are available for recording when including MATH and communication channels. Connect units with Ethernet cables for dispersed installations.
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Reduce wiring with distributed installation

When the data logger is installed offsite (away from the DUT), you can place the sub unit at the site and monitor data without the need for long-distance wiring of thermocouples and other sensors.

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Specifications & Detail

GM10 Data Acquisition Module


No. of I/O channels GM10-1: 100 max.
GM10-2: 500 max. (or 420 with AI only)
Scan interval 100/200/500 ms/1/2/5 s
* Some intervals not available depending on system configuration and modules.
Internal memory
(flash memory)
GM10-1: 500 MB
GM10-2: 1.2 GB
External storage media SD memory card (SD/SDHC), up to 32 GB (1 GB incl.)
Format: FAT32 or FAT16
Data types Event, display, alarm summary, manual sample, settings, and report (optional code /MT)
Data format Binary or text
Alarms Number: Max. 4 alarms per measurement channel
Types: high limit, low limit, difference high limit, difference low limit, rate of change increase, rate of change decrease, delay high, delay low
Event actions Specified actions can be performed when certain events occur.
Number: 50
Events: alarms, remote control input, etc.;
Actions: record stop/start, alarm ACK, etc.
Timers: 12
Match time timers: 12
Batch function Manage data by batch name. Enter text fields and batch comments in data files.
Calibration correction mode Off, linearizer approximation, linearizer bias
Security functions Key lock and login functions.
Insulation resistance Between RS-422/485/Ethernet terminals and internal circuitry: 20 MΩ or greater (at 500 VDC)
Erntheet Electrical/mechanical specifications IEEE 802.3 compliant (Ethernet frame type: DIX specification)
Implemented protocols TCP, UDP, IP, ICMP, ARP, DHCP, HTTP, FTP, SMTP, SNTP, Modbus, dedicated protocol, SSL, DARWIN-compatible communication
USB communication Standards conformity USB 2.0 compliant (recognized as a serial port by the PC)
Connector format/no. of ports mini B/1
Implemented protocol Dedicated protocol
(optional code /C3)
Media EIA RS-422/485 compliant
Implemented protocol Dedicated protocol, Modbus/RTU, or DARWIN compatible communication
(optional code /C8)
Standards conformity Bluetooth® Ver 2.1+EDR compliant
Supported profiles SPP (serial port profile)
Communication range Approx. 10 m (depending on operating environment) (Class2)
Implemented protocol Dedicated protocol
Ethernet/IP communications
(optional code /E1)
Can join Ethernet/IP networks as an adapter (server).
Max. connections 20 (or 10 max. at TCP/IP level)
Supported protocols EIP/PCCC, EIP/native
Messaging Explict (UCMM Class 3) +I/O (Class 1)
Objects Assembly, PCCC, Data Table
WT communication
(optional code /E2)
Models supported WT1800, WT500, WT300
Supported communication Ethernet
Max. connected units 16
Communication interval 500 ms/1 s/2 s/5 s/10 s/20 s/30 s
Acquirable data types Voltage, current, power, power factor, phase, watt hours, harmonics, and others.
Max. data assignments 300
OPC-UA Server
(optional code /E3)
Communication Type: OPC-UA Server
Encoding: UA Binary
Protocol: OPC UA TCP
Maximum number of connections: 3 sessions
Profile: Micro Embedded Device Server
Data acquisition Measurement channel, computation channel, communication channel value and alarm status
Data writing Measurement channel (DO channel only), communication channel
Port number 4840 (changeable: 1 to 65535)
Number of items 300 max. (MonitoredItem/Session)
Fastest period 100 ms
SLMP Communication
(Mitsubishi PLC)
(optional code /E4)
Number of connection destination servers 16 max.
Read cycle 100 ms, 200 ms, 500 ms, 1 s, 2 s, 5 s, 10 s, 20 s, 30 s, 1 min
Communicable internal data Special relay (SM), special register (SD), input (X), output (Y), internal relay(M), latch relay (L), annunciator (F), edge relay (V), link relay (B), data register(D), link register (W), timer contact (TS), timer coil (TC), current timer value (TN), integration timer contact (SS), integration timer coil (SC), current integration timer value (SN), counter contact (CS), counter coil (CC), current counter value (CN), special link relay (SB), special link register (SW), direct access input (DX), direct access output (DY), index register (Z), file register (R, ZR), extended data register (D), extended link register (W)
Device code is indicated in parentheses.
(with Report function, optional code /MT)
No. of MATH channels GM10-1: 100
GM10-2: 200
MATH types Basic math, statistics, special operators, conditional statements, and others.
Communication channels
(optional code /MC)
No. of communication channels GM10-1: 300 (C001-C300)
GM10-2: 500 (C001-C500)
Log scale
(optional code /LG)
Input types LOG input, pseudo log (input that supports pseudo log), LOG linear (linear input within the log decade)
Scalable range LOG input: 1.00E-15 to 1.00E+15 (max. 15 decades),
[scale low limit] < [scale high limit]
Pseudo log input/LOG linear: 1.00E-15 to 1.00E+15 (max. 15 decades),
the mantissa of the scale low and high limits are assumed to be the same.
Multi-batch Function
(optional code /BT)
Number of multi batches GM10-1: 6 max.
GM10-2: 12 max.
Aerospace Heat Treatment (optional code /AH) Number of manageable schedules GM10-1: 6 max.
GM10-2: 12 max.
Calibration correction mode Off, linearizer approximation, linearizer bias, correction coefficient
Number of set points 2 to 12


GM90PS Power Supply Module


Rated supply voltage 100-240 VAC, 12-28 VDC (GM90PS-1N2W0)
Operating supply voltage 90-132 VAC, 180-264 VAC, 10-32 VDC (GM90PS-1N2W0)
Power frequency
(AC power supply)
50 Hz±2%, 60 Hz±2%
Insulation resistance Between power terminal and earth: 20 MΩ or more (at 500 VDC)
Withstand voltage Between power terminal and earth: 3000 VAC (50/60 Hz), 1 minute
1000 VAC (50/60 Hz) for 1 minute (GM90PS-1N2W0)


SMARTDAC+ GM common specifications


Standards supported

CSA CSA22.2 No.61010-1, installation category II, pollution degree 2
CSA 22.2 No.61010-2-030-12
UL UL61010-1, UL61010-2-030 (CSA NRTL/C)
EMC directive:
EN61326-1 Class A Table 2
EN55011 Class A Group 1
Low voltage directives:
EN61010-1, EN61010-2-030
Installation category II, pollution degree 2, measurement category II
R&TTE directive (optional code /C8):
 Installation category II, pollution degree 2, measurement category II
 EN301 489-1
 EN301 489-17
 EN300 328
EMC Regulatory Arrangement in Australia and New Zealand (RCM) EN55011 Class A Group 1
Wireless communication standards of Australia and New Zealand (RCM) (optional code /C8) AS/NZS4268, AS/NZS2772.2
KC marking Electromagnetic wave interference prevention standard, electromagnetic wave protection standard compliance
Environmental performance WEEE directive support
Wireless (Bluetooth) Supports radio wave regulations of Japan, America, Canada, Europe (EU), Australia, New Zealand, China, and Korea.


Normal operating conditions


Ambient temperature -20 to 60°C
If less, -20 to 50°C
  – When using the GX90YD, GX90WD, and GX90XA-T1 (electromagnetic relay type)
  – With the GM10/C8 (Bluetooth option)
Ambient humidity 20 to 85% RH (no condensation)
Vibration 5 ≤ f < 8.4 Hz amplitude 3.5 mm (peak)
8.4 ≤ f ≤ 160 Hz acceleration 9.8 m/s² (or less)
Shock When ON, 98 m/s² or less, 11 ms, 3 times in 6 directions (±X, ±Y, ±Z) (excluding GX90YD and GX90WD)
When OFF, 500 m/s² or less, approx. 10 ms, 3 times in 6 directions (±X, ±Y, ±Z)
Magnetic field 400 A/m or less (DC and 50/60 Hz)
Data Sheet & Downloads