Device functions
Page 30
RES-5009
Version 1
CAN communication
•
24 VDC voltage supply present:
RESISTRON
®
Temperature Controller RES-5009 can communicate via the
CAN interface.
•
no line voltage present:
RESISTRON
®
Temperature Controller RES-5009 remains in an inactive state.
•
Interruption of the line voltage (e. g. by switching off when a door is opened):
triggers the error message
201 (error group no. 7, line voltage/sync signal is missing) and the Alarm relay switches. This is caused by the
lack of line voltage. The error message can be deleted after the line voltage is switched on again by activating
the reset (
section 9.2.3 "Reset (RS)" on page 32).
The error message or switching of the Alarm relay – caused by switching off the line voltage – can be pro-
cessed or suppressed in the PLC program without difficulty.
9.2
Input data
Input data are the data transmitted from the CANopen/CAN master to the RESISTRON
®
Temperature Controller
RES-5009. They contain the setpoint and control functions, such as START or AUTOCAL for the RESISTRON
®
Temperature Controller RES-5009. The functions are explained in the following.
9.2.1
AUTOCAL (AC) automatic zero calibration
With the AUTOCAL function, the RESISTRON
®
Temperature Controller RES-5009 adapts to the current signals
and voltage signals present in the system. The controller sets itself to the value predefined in the parameter data
(
section 9.4.4 "Variable calibration temperature" on page 38). If no parameter data are transmitted from the
CAN master, the standard value is 20 °C.
CAUTION
In order to ensure that the seam quality remains constant, the set basic temperature for the cali-
bration should correspond to the real ambient temperature.
With some CANopen/CAN masters, the parameter data cannot be changed during operation. Adjustment of the
calibration temperature to the current ambient conditions in the machine is therefore not possible.
The calibration temperature – with the appropriate setting in the parameter data (
bration temperature" on page 38) – can therefore be specified at every zero calibration through the input data “Set-
point/AC temperature”. This can be done in the range 0…+40 °C. The specified value for the calibration temper-
ature must be entered in the input data “Setpoint/AC temperature” during activation of the AUTOCAL function (AC-
Bit = 1). This specified value must remain entered until the end of the AUTOCAL function.
If too high of a temperature (greater than 40 °C) or a fluctuating specification value is specified, a corresponding
error message is output (error no.115 and 116;
section 9.15 "Error messages" on page 49).
The AUTOCAL request (AC-Bit = 1) is carried out by the controller if the AUTOCAL function is not blocked.
The automatic calibration process takes approx. 10…15 seconds, the related yellow LED on the front panel lights
up and the controller reports “AUTOCAL active” (AA-Bit = 1) to the output data. Additional heating of the heating
element does not take place here. The actual value output (terminal 17+7) goes to 0…3 °C (i. e. approx. 0 VDC).
The AUTOCAL function is run through a maximum of 3 times, if the temperature of the heating element fluctuates.
After that, if the function cannot be successfully ended, an error message is output (
sages" on page 49).
The AUTOCAL function must be executed if the heating element has been changed or the wiring has been
changed. In case the ambient temperature changes, there is no need to calibrate again.
CAUTION
The AUTOCAL function must be enabled via the machine control (HMI). Otherwise, proper func-
tioning cannot be guaranteed.
Summary of Contents for RESISTRON RES-5009
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