Danfoss EKE 1A User Manual page 75

Superheat controller and stepper valve driver, Type EKE 1A, 1B, 1C, 1D
8.1.3 Stepper alarms/errors
Table 64: Stepper alarms/errors
Label Alarm description Actions during ac‐
tive
E103 No valve con gured Auto operation
blocked
E100 Valve con guration Auto operation
error blocked
E114 check valve step Auto operation
mode vs positioning blocked
E115 Valve speed too fast Auto operation
blocked
E116 Valve speed to slow Auto operation
blocked
E117 Valve emergency Auto operation
speed too fast blocked
E118 Valve emergency Auto operation
speed too slow blocked
E119 Valve start speed Auto operation
too slow blocked
E126 Valve Short circuit or Auto operation
driver too hot blocked, stepper will
try to recover every
10 secs
A997 Battery critical low
voltage
A996 Battery too high
voltage
W001 Battery low voltage
8.1.4 Bus alarms/errors
Table 65: Bus alarms/errors
Label Alarm description Actions during ac‐
tive
E122 Shared signal time-
out
E128 Ext. ref. via Modbus If bus signal via
timeout Modbus
© Danfoss | Climate Solutions | 2024.08
Trigger (how the alarm IS How to clear the alarm
raised)
I067 valve con guration set I067 valve con guration set a
none valve from the list
One or more stepper con gura- Correct stepper con g
tion errors
Stepper mode is full step and If full step mode is wanted set
half as nal is requested nal positioning to full. If half
step as nal position is wanted,
set step mode to minimum half
step
Combination of step mode and Adjust valve speed and/ or
speed give too few micro speed valve step mode to be with lim-
per sec (below 8) its
Combination of step mode and Adjust valve speed and/ or
speed give too many micro valve step mode to be with lim-
speed per sec (higher than its
12800)
Combination of step mode and Adjust valve speed and/ or
speed give too few micro speed valve step mode to be with lim-
per sec (below 8) its
Combination of step mode and Adjust valve speed and/ or
speed give too many micro valve step mode to be with lim-
speed per sec (higher than its
12800)
Combination of step mode and Adjust valve speed and/ or
speed give too few micro speed valve step mode to be with lim-
pr sec (below 8) its
Stepper driver report thermal Stepper driver has recovered
Shutdown, from thermal overload
Battery input below 12V Battery input above 12.2V
Battery input above 27V Battery input below 25V
Battery input below 17V Battery input above 17.2V
Trigger (how the alarm IS How to clear the alarm
raised)
One or more signals (S2, S3, S4, All needed signal is updated at
P0, PC) are not Shared through right frequency
CAN within "CAN bus Min. up-
date interval" or Modbus with"
Modbus min. update interval
seconds".
Bus ext ref. needs to be upda- Ext reference signal updated
ted within "Modbus min. up- within Modbus min. update in-
date interval seconds". terval
Remark
No valve selected. Please con gure the
correct valve in I067 Valve con guration
One or more valve con guration errors is
blocking operation of stepper valve. Check
the other active alarms to identify the
valve con guration problem
With 1064 Valve step mode set to "full"
and IO29 Valve step positioning set Half
step operation is possible, Correct either
IO29 or IO64
Number of micro steps/sec is too high
(higher than 12800 micro step/sec), Re-
duce IO31 Valve speed or use less micro
step per full step (IO64 Valve step mode)
Number of micro steps/sec is low (higher
than 8 micro step/sec), increase IO31 Valve
speed or increase IO32 Valve start speed or
use more micro step per full step (IO64
Valve step mode)
Number of micro steps/sec is too high
(higher than 12800 micro step/sec), Re-
duce IO61 Valve emergency speed
Number of micro steps/sec is low (higher
than 8 micro step/sec), increase IO61 Valve
emergency speed
Number of micro steps/sec is low (higher
than 8 micro step/sec), increase IO31 Valve
speed or increase IO32 Valve start speed or
use more micro step per full step (IO64
Valve step mode)
Valve driver is unable to drive valve. Check
for Short the coils or if ambient is higher
than 60 °C
Battery voltage is found to be critical low;
valve will not be closed in case of power
fail. Replace battery /check connections
Battery voltage is too high. Valve will not
be closed in case of power fail. Replace
battery with one of correct type (18-24V.).
Battery voltage is found to be low, replace
battery.
Remark
A needed control / sensor / reference sig-
nal via CAN bus is missing. Check CAN bus
connection and operation of other CAN
bus controllers.
A needed control / sensor / reference sig-
nal via Modbus is missing. Check Modbus
connection and operation of other Mod-
bus controllers.
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