Controller functions
RES-409
Page 33
If a START or STOP command is received between the
"AUTOCAL" request and the actual start of the
"AUTOCAL" function, the "AUTOCAL" request is
canceled again and the START or STOP command is
executed instead.
10.3.4 Alloy / range (heatsealing band
alloy TCR / temperature range)
The RES-409 can be configured for different
heatsealing band alloys and temperature ranges (T
max
)
with CAN message address 8. The set heatsealing
band alloy and temperature range are permanently
stored in the controller and are not lost even if the
power supply fails. The current setting can be reloaded
by means of CAN message address 11. The controller
is delivered with the setting "1", in other words TCR =
1100ppm and temperature range = 300°C.
If "Alloy/range" (CAN message address 8) is set to
"Variable" (value 11), you can now specify the
temperature coefficient TCR of the heatsealing band
material with CAN message address A, the
temperature range with CAN message address 14
h
,
and the maximum permissible set point T
max
with CAN
message address 13
h
.
If a set point which is higher than the maximum
permissible temperature T
max
is selected, it is either
limited to the maximum value (controllers
manufactured as of February 2007) or ignored
(controllers manufactured up to January 2007).
The scale of the analog output for the ACTUAL
temperature is dependent on the selected temperature
range:
You must always run the "AUTOCAL"
function after changing the alloy/range.
10.3.5 RESET command
This command is used to reset the controller. If the
controller reports a fault (
status" on page 36), it must be reset with this command
(and possibly also with an AUTOCAL command).
If a communication problem occurs, the controller must
be reset by briefly disconnecting it from the power
supply.
The controller runs an internal initialization
lasting approximately 500ms after the
"RESET" command is received. The next
heatsealing process cannot be started until it has
finished.
If a contactor K2 is used to deactivate the
control loop
(
it must be energized again 50ms at the
latest after the "RESET" command is received. If it
takes too long to energize, an error message is
output by the controller.
10.3.6 Querying the ACTUAL
temperature
If the RES-409 receives a command requesting the
actual value, it returns the current ACTUAL
temperature in °C. Negative temperatures are identified
by the "sign" bit (most significant bit).
10.4
Sending CAN messages
The send command set of the RES-409 is shown in the
table below:
Temperature
range
Scale
200°C and 300°C
0…10VDC (corresponds to
0…300°C)
400°C and 500°C
0…10VDC (corresponds to
0…500°C)
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