FX3G SERIES PROGRAMMABLE CONTROLLERS USER`S
Contents
1. FX3G Series Programmable Controllers 22 Battery User s Manual Hardware Edition 22 1 Battery Purpose E 22 Battery 22 1 STARTUP AND MAINTENANCE PRECAUTIONS lt DANGER Make sure to connect the battery for memory backup correctly Do not charge disassemble heat short circuit or expose the battery to fire Doing so may rupture or ignite it STARTUP AND MAINTENANCE PRECAUTIONS CAUTION Turn off the power to the PLC before attaching or detaching the following devices Failure to do so may cause equipment failures or malfunctions Peripheral devices expansion boards and special adapters Extension units blocks and FX Series terminal blocks Battery and memory cassette TRANSPORTATION PRECAUTIONS CAUTION When transporting the FX3G Series PLC incorporating the optional battery turn on the PLC before shipment confirm that the battery mode is set using a parameter and the ALM LED is OFF and check the battery life If the PLC is transported with the ALM LED on or the battery exhausted the battery backed data may be unstable during transportation The battery is not incorporated in the PLC main unit at shipment from the factory Order it if necessary Battery Purpose The battery backs up the following contents against power interruption Proper parameter setting is required to back up the device memory and current time For the parameter setting method refer to Section 22 3 Item Data Re2. ed as the main unit in this example Turn the power OFF Remove the top cover A in the right figure When the expansion board connector conversion adaptor or memory cassette remove it Remove the old battery Extract the old battery from the battery holder B and disconnect the battery connector C Install the new battery For the installation procedure refer to Subsection 22 3 1 Attach the top cover When the expansion board connector conversion adaptor or memory cassette was removed in the step 2 attach it again Cation 1 After replacing the battery check whether the backup target devices keep devices and clock data are backed up correctly confirm safety and then run the PLC 2 If the backup target devices keep devices are not backed up correctly clear them and set their initial values and clock data again if necessary For the clear method of keeping devices refer to the programming manual 22 6 Battery Related Precautions 1 The FX3G series uses a different battery type than those used for the FX2N F2 40BL and FX2nc FX2NC 32BL series e Not for use with the FX3G series 2 Make sure to select the battery mode using a parameter when using the battery 348
3. s after production Battery life vs temperature Br The life of the battery changes with respect to ambient temperature 7 ee When planning for battery replacement please estimate the battery 6 Ze life according to the graph to the right and order the replacement TE EF batteries in advance S 2a B g3 5 i A a 5 21 g ra 0 10 20 30 40 50 Ambient temperature C 22 4 2 Reading the date of manufacture How to read the battery lot number reference Nameplate Model name Connector LOT 4 4 Year Example 2004 7 E Month Example Apr Last digit of calendar 1 to 9 Jan to Sept year X Oct Y Nov Z Dec 22 4 3 Special battery low voltage device amp notification program example Prepare a system which allows constant external monitoring of the battery status using an indicator lamp etc e M8005 M8005 lS Y001 is output when a battery low voltage condition occurs Ba ttery low voltage e M8006 Battery low voltage is latched e D8005 Battery voltage can be monitored 347 FX3G Series Programmable Controllers 22 Battery User s Manual Hardware Edition 22 5 Battery Replacement 22 5 Battery Replacement Before replacing the battery Step 4 of the replacement procedure below must be performed within 20 seconds after step 3 or the memory content could be lost The FX3G 40MT ES is us
4. tained By Backup Battery Auxiliary relay M1536 to M7679 state S1000 to S4095 data register D1100 to D7999 Device memory extended register RO to R23999 Current time Current time clock 1 The data is backed up by the large capacity capacitor built in the PLC at shipment from the factory For backup by the capacitor refer to Section 4 5 22 2 Specifications Item Specifications Remarks Nominal voltage 3V Battery voltage can be monitored with PLC data register D8005 345 p sseg N Kowa Ayayeg 0008a 0008W s17 uonon ysu Ww s d eloeds FX3G Series Programmable Controllers 22 Battery User s Manual Hardware Edition 22 3 Setting for Battery 22 3 Setting for Battery The battery is not incorporated in the main unit at shipment from the factory It is necessary to attach the optional battery if backup is required In addition the battery mode is set via a parameter 22 3 1 Attaching the battery The FX3G 40MT ES is used as the main unit in this example Turn the power OFF 2 Remove the top cover A in the right figure When the expansion board connector conversion adaptor or memory cassette is attached remove it 3 Attach the battery Insert the battery connector B in the right figure of the battery Push the battery into the battery holder C in the right figure Set the battery cable as shown in D in the right figure 4 Attach the
5. top cover When the expansion board connector conversion adaptor or memory cassette was removed in the step 2 attach it again 22 3 2 Setting the battery mode GX Developer Ver 8 72A or later The following setting using a parameter is required to use the battery Note that the battery does not back up the data if the following setting is not provided For the backup target data refer to Section 22 1 On the PLC system 1 tab on the FX parameter window check the check box Use Battery Refer to the window below FX parameter Memory capacity PLC name 1 0 assignment PLC systemf1 PLC system 2 Positioning Battery mode Put a check mark to the TR check box Use Battery MODEM initialized None RUN terminal input None Cancel 346 FX3G Series Programmable Controllers 22 Battery User s Manual Hardware Edition 22 4 Battery Handling 22 4 Battery Handling p sseg N Kiowan When the battery voltage is low a ALM LED lights red while the power is ON and M8005 and M8006 are switches ON Although the battery will continue to function for approximately 1 month after the BATT LED switches ON a replacement battery should be ordered and installed as soon as possible Ayayeg 22 4 1 Battery life and replacement guidelines FX3uU 32BL battery life Approx 5 years ambient temperature 25 C 77 F Guarantee period 1 year after delivery or 18 month
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