User Guide | Stepper Valve Extension Module, Type EKE 1P
10 | BC320219567793en-000201
© Danfoss | DCS (vt) | 2020.03
Valve neutral zone
An EKE controller has a complex algorithm implemented to handle oscillation issues
related to output valve OD by defining some neutral zone. In neutral zone, the valve will
not move untill it overcomes the definite variation in the valve opening degree.
For the default neutral zone of 0.5 % hysteresis, the valve will not move if it is unable to
receive the higher variation than the set value.
The benefit of using such techniques will not affect the performance of the system, but
will reduce the problem related with the fluctuating signal, step loss and hysteresis in
the valve.
0 – 5%
Fac: 0.5%
Communication
Controller adr.
Controller address - applies both to the MODBUS and the CANBUS
CAN baudrate
Setting of the CANBUS baudrate
20k / 50k / 125k / 250k / 500k / 1M
Fac: 50k
Service
Actual OD
Read-out of the valve opening degree in percentage
Actual step
Read-out of the valve opening degree in number of steps
EKE 2U state
Read-out of the EKE 2U battery back-up module status.
Init: Initialising
Ready: Fully charged and functional
Char: Charging
Repl: Check connections or replace EKE 2U module as the battery voltage is likely too
low to guarantee full closure of the valves.
Fault: EKE 2U battery voltage too low to close the valve.
Actual battery
voltage
Read-out of the battery back-up voltage level
Manual mode
Enables manual control of the valve.
Remember to disable this function after manual control. Otherwise the EKE 1P will
remain in manual mode until a power cycle or main switch occurs.
On / Off
Fac: Off
Manual OD
Manual control of the valve opening degree in application 2. In application 1 the
manual control is done from the AK-PC. When entering the manual mode, the valve will
start at the current OD.
0 – 100%
Fac: current OD
