M4RTU/M4 I/O User’s Guide
33
INSTALLATION AND SETUP
CONNECTING THE BACKUP BATTERY
The M4RTU/M4 I/O includes a RAM backup battery. This 3.6-volt lithium battery features a shelf life of up to
10 years and an operational life of two to five years.
To maintain operational life, the battery is not connected at the factory. You will need to connect it yourself.
To do so, remove the top cover of the M4RTU/M4 I/O by removing the four corner screws. The battery is located
at the far right of the unit. Attach the battery connection wire to the battery connection labeled J2. The connection
wire will attach in one direction only, with the red wire connecting to the positive lead. Refer to Figure 3-4 to
confirm battery and battery connection locations.
The Battery Service Record stamp adjacent to the J2 battery connection includes the Opto 22 part number of
the battery (G4BATT32), the date the battery was installed, and the date the battery should be replaced
(five years after installation). If the M4RTU/M4 I/O is subjected to temperature extremes, you should replace
the battery after as little as two years.
To comply with Factory Mutual, section 3.2.7, replacement of the lithium battery must be done by the factory.
Figure 3-4: M4RTU/M4 I/O Backup Battery Location
Summary of Contents for Modular M4RTU
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Page 74: ...74 M4RTU M4 I O User s Guide FIELD WIRING...
Page 80: ...80 M4RTU M4 I O User s Guide PRODUCT SPECIFICATIONS...
Page 82: ...82 M4RTU M4 I O User s Guide ADDRESS JUMPER CONFIGURATION...
Page 86: ...86 M4RTU M4 I O User s Guide UPGRADING RAM AND FLASH EEPROM...
Page 89: ...M4RTU M4 I O User s Guide 89 WORKSHEETS Figure F 3 M4RTUX I O Extender I O Module Worksheet...
Page 91: ...M4RTU M4 I O User s Guide 91 WORKSHEETS Figure F 5 Field Wiring Worksheet Example 2...
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