Rockwell Automation 1785-Lxxx Enhanced and Ethernet PLC-5 Programmable Controllers - Manual (Page 272)

Publication 1785-UM012D-EN-P - July 2005
A-4 System Specifications
Battery Specifications
Enhanced and Ethernet PLC-5 programmable controllers use 1770-XYC
batteries that contain 0.65 grams of lithium.
Memory Backup Devices You can add an EEPROM to the PLC-5 controller to provide backup memory
for your program in case the controller loses power. These memory cards are
available:
Use your programming software to save a program currently in the controller
to the EEPROM card. If you restore a program from the EEPROM to
controller memory and controller memory is bad, the restore changes the date
and time in the controller status file to the date and time the EEPROM was
saved. If you restore a program from the EEPROM to controller memory and
controller memory is valid, the status file retains its current date and time.
EEPROM Compatibility
EEPROM compatibility is related to:
Battery Life Estimates
In these Controllers At this
Temperature Power Off
100% Power Off
50% Battery Duration
Aafter the LED Lights
1
PLC-5/11B, -5/20B and -5/20E 60°C 256 days 1.4 years 11.5 days
25°C 2 years 4 years 47 days
PLC-5/30B -5/40B, -5/40E, -5/40L,
-5/60B, -5/60L, -5/80B and -5/80E 60°C 84 days 150 days 5 days
25°C 1 year 1.2 years 30 days
1 The battery indicator (BATT) warns you when the battery is low. These durations are based on the battery supplying the only power to the controller
(power to the chassis is off) once the LED first lights.
Catalog Number For This Product Memory Size
1785-ME16 Enhanced PLC-5 controllers 16K words
1785-ME32 Enhanced PLC-5 controllers 32K words
1785-ME64 Enhanced PLC-5 controllers 64K words
1785-ME100 Enhanced PLC-5 controllers 100K words