Specifications

RK0YG302 © Danfoss 04/2007 145
AK-OB 101A/XM 107A
Extension module
AK-XM 107A
Function
The module contains eight digital inputs for pulse measuring or
for registering on/o signals from a switch function.
The pulses are measured according to the DIN 43864/S01 inter-
face.
Ordering
Type Function Code No.
AK-XM 107A
Extension module for pulse
measuring
080Z0020
Extension module
AK-OB 101A
Function
The module is a clock module with battery backup.
The module can be used in controllers that are not linked up in
a data communication unit together with other controllers. The
module is used here if the controller needs battery backup for the
following functions
• Clock function
• Fixed times for day/night change-over
• Fixed defrost times
• Saving of alarm log in case of power failure
• Saving of temperature log in case of power failure
Placing
The module is placed on the PC board inside the upper part.
Working life of the battery
The working life of the battery is several years – also if there are
frequent power failures.
An alarm is generated when the battery has to be replaced.
After the alarm there are still several months of operating hours
left in the battery.
Ordering
Type Function Code No.
AK-OB 101A
Real-time clock with battery
backup.
080Z0252