Ropex RESISTRON RES-5009, User Manual, Page: 32 / 98

Device functions
Page 32 RES-5009 Version 1
• ROPEX CAN:  section 11.5.2 "START/STOP command" on page 82
9.2.3 Reset (RS)
The reset request (RS bit) is used to reset the RESISTRON
®
Temperature Controller RES-5009 when the con-
troller is in the alarm state.
As long as reset request (RS bit) is active, no AUTOCAL and no START request are accepted. In the error diag-
nosis, only errors no. 5 and 7 (201…203, 901, 913) are evaluated and output. In this status, no control of the power
element takes place and no measurement impulses are generated. As a result, there is also no more updating of
the actual value. The reset request is not processed until the RS bit is processed. The CAN communication is not
interrupted by resetting of the controller.
During activation of the reset request (RS bits), the actual value output goes to 0…3 °C (i. e. approx. 0 VDC) and
the SA bit is active. This can be evaluated as feedback by the higher-level controller (e. g. PLC).
The execution of the AUTOCAL function is not interrupted by activation of the reset request (RS bit).
After resetting the reset request (RS bit), the controller carries out an internal initialisation for about 500 ms. The
next welding procedure can only be started after that.
Further information
• CANopen:  section 10.7.6 "Control information" on page 67 (RS bit)
• ROPEX CAN:  section 11.5 "Receiving CAN messages" on page 77 (address 0004
h
, value 6
d
)
9.2.4 Measurement pause (MP)
By activating the measurement pause (MP bit), the RESISTRON
®
Temperature Controller RES-5009 immediately
generates no measuring pulses any more. In the error diagnosis, only errors no. 5 and 7 (201…203, 901, 913) are
evaluated and output. The actual value is no longer updated. The most recent value – valid before activation of
the measurement pause (MP bit) – is output. After deactivating the measurement pause, measuring pulses are
immediately generated again, all error messages are evaluated and the actual value is updated.
The measurement pause request (MP bit) is effective only in measurement mode. Start, reset and AUTOCAL
request have priority.
The measurement pause request (MP bit) is suitable for applications in which the electrical connections of the
heating element must be disconnected during normal operation without an alarm being triggered (e. g. with sliding
rail contacts).
In contrast to the reset request (RS bit), the measurement pause request (MP bit) does not delete any alarm mes-
sages. After deactivating the measurement pause (MP bit), the controller is immediately active again, no initiali-
sation phase is run through.
After switching on the controller, the measurement pause request is only evaluated by the controller when the
system check (incl. function check of the heating circuit) has been successfully completed. This can take several
100 ms.
Further information
• CANopen:  section 10.7.6 "Control information" on page 67 (MP Bit)
• ROPEX CAN:  section 11.5 "Receiving CAN messages" on page 77 (address 0050
h
)
NOTE
If a contactor Kb is used to switch off the control loop (

section 7.3 "Mains connection" on
page 16), it must be switched on safely no later than 200 ms after the reset request (RS bit) has
been reset. The switching and delay times of the contactor must be observed. Switching on
later results in an alarm message from the controller.