Railheat Control - Danfoss AK-CC55 Multi Coil User Manual

AK-CC55 Multi Coil

Railheat control

Table 36: Railheat control
Function Description
Control state A Readout of the actual control state of the controller
Control state B Readout of the actual control state of the controller
Control state C Readout of the actual control state of the controller
Dewpoint Actual dewpoint received from system manager via
network
Rail heat Actual status of output function
Rail heat power Readout of the actual rail power in %
Rail heat PWM Actual status of output function
Rail heat control The rail heat can be controlled in several ways:
mode 0: Rail heat is running all the time
1: Pulse control is used with a timer function follow-
ing the day/night operation
2: Pulse control is used with a dewpoint function. This
function requires that a signal is received about the
dewpoint value. The value is measured by a system
manager and sent to the controller via the data com-
munication.
Rail heat ON cycle Rail heat power during day time. The ON period is set
day as a percentage of the period
Rail heat ON cycle Rail heat power during night time. The ON period is
night set as a percentage of the period time
Rail heat period Period time for pulsing of rail heat
time
Rail heat PWM - Peri- Period time for the pulse width modulation
od time
Rail heat min. ON Lowest permitted rail heat power. When the meas-
cycle ured dewpoint is below the defined minimum limit
the rail heat will run with the set minimum power
Dewpoint min. limit If the measuered dewpoint is below the set value the
rail heat is running at minimum heat
Dewpoint max. limit If the measured dewpoint is above the set value the
rail heat is maximum
© Danfoss | Climate Solutions | 2022.08
Values
0=Normal ctrl., 1=Hold after defrost, 4=Drip off,
10=Main switch OFF, 11=Thermostat cutout, 12=Frost
protection S4, 13=Not_used, 14=Defrost, 15=Fan de-
lay, 16=Forced closing, 17=Door open, 18=Melt peri-
od, 19=Modulating temp. control, 20=Emergency
control, 23=Adaptive superheat control, 24=Start in-
jection, 25=Manual control, 26=No refrigerant selec-
ted, 29=Case cleaning, 30=Forced cooling, 31=Door
open, 32=Power-up delay, 33=Air heating, 45=Shut
down controller, 48=Adaptive liquid control
0=Normal ctrl., 1=Hold after defrost, 4=Drip off,
10=Main switch OFF, 11=Thermostat cutout, 12=Frost
protection S4, 13=Not_used, 14=Defrost, 15=Fan de-
lay, 16=Forced closing, 17=Door open, 18=Melt peri-
od, 19=Modulating temp. control, 20=Emergency
control, 23=Adaptive superheat control, 24=Start in-
jection, 25=Manual control, 26=No refrigerant selec-
ted, 29=Case cleaning, 30=Forced cooling, 31=Door
open, 32=Power-up delay, 33=Air heating, 45=Shut
down controller, 48=Adaptive liquid control
0=Normal ctrl., 1=Hold after defrost, 4=Drip off,
10=Main switch OFF, 11=Thermostat cutout, 12=Frost
protection S4, 13=Not_used, 14=Defrost, 15=Fan de-
lay, 16=Forced closing, 17=Door open, 18=Melt peri-
od, 19=Modulating temp. control, 20=Emergency
control, 23=Adaptive superheat control, 24=Start in-
jection, 25=Manual control, 26=No refrigerant selec-
ted, 29=Case cleaning, 30=Forced cooling, 31=Door
open, 32=Power-up delay, 33=Air heating, 45=Shut
down controller, 48=Adaptive liquid control
0=OFF, 1=ON
0=ON, 1=Day/Night timer, 2=Dewpoint ctrl.
Code Short name
u00 u00 Ctrl. state
U74 U74 Ctrl.State B
U83 U83 Ctrl.State C
x18 --- Dew point
u61 u61 Railh. relay
u85 u85 Rail DutyC %
U59 U59 Railheat PWM
o85 o85 Railh. mode
o41 o41 Railh.ONday%
o42 o42 Railh.ONngt%
o43 o43 Railh.cycle
P82 P82 RailCyclePWM
o88 o88 Rail Min ON%
o86 o86 DewP Min lim
o87 o87 DewP Max lim
BC365022028193en-000201 | 52