Battery Module AM 811F

Features 

… Provides battery backup 

… Enables redundant battery energy backup on the AC 800F

Description 

The battery module provides for retention of the AC 800F RAM data when the AC 800F is off or has no Ethernet module. 

The battery module is used when the AC 800F is used as a stand-alone device, i.e. when it has no Ethernet connection, or when the only existing Ethernet module is to be replaced without the AC 800F loosing its configuration data.

LED Displays 

State 

 Off No supply power, module is isolated 

 Green Power supply on, module identified and ready to operate as configured. 

 Orange Power supply on, module identified and either: 

 — normal transitory state after module startup 

 — configuration mode of Boot Loader 

 Red Module power supply is on and either: 

 — module not yet identified (normal for short time, during module startup) 

 — error occurred during module test 

Battery (PM803F) 

 Off AC 800F is active, AM 811F not active 

=>buffering from power supply module 

 AC 800F is off (no watchdog of the batteries voltage) =>buffering from battery. 

Orange During battery recovery or start-up phase 

 Red Warning: battery low, no battery inserted, insufficient electrical contact etc. 

 Green battery inserted and data protection provided. Battery (PM802F) 

 Off Sufficient buffer battery voltage 

 Orange Buffer battery not found or low (insufficient voltage).

Technical Data

Rated voltage 3.3 V / 5 V, ±3%, from CPU board 

Power consumption approx. 0.28 W 

Battery 3.6 V lithium battery, 950 mAh 

(included in delivery) 

Low battery 

signaling ≤ 3.2 V 

RAM and real-time-clock buffering time 

PM 803F PM 802F 

New battery inserted ≥ 10 days ≥ 1,5 years 

After “Low” warning ≥ 5 hours ≥ 10 days 

Weight approx. 0.150 kg without buffer battery 

approx. 0.170 kg with buffer battery