Parker EME
Compax3 device description
192-120103 N13 C3I20T11 / C3I32T11 December 2010
97
STO function description
When opening the protective door or after actuating the emergency stop switch, the
signal of the "energize" input of the Compax3M drive modules is interrupted via the
Q3 output on the UE410-MU3T5 safety control. This triggers an immediate braking
ramp on the drives. Then after the delay time set on the UE410-MU4T5 safety
control, the STO function in the drives is triggered via the Q4 output. The servo
drives are then in safe torqueless state. The delay time must be set on the safety
control so that the braking ramp in the drives has run off and the drives are at
standstill when the delay time has elapsed.
The described application example corresponds to the stop category 1 according to
EN 60204-1. Together with the external safety switching device, the "Safe Stop 1"
safety function can also be implemented.
A Stop Category 0 in accordance with EN 60204-1 can be implemented, for
example by setting the delay time on the safety switching device to 0. The
Compax3M will then be turned off immediately in 2 channels and will not be able to
generate any more torque. Please take into consideration that the motor will not
brake and a coasting down of the motor may result in hazards. If this is the case,
the STO function in stop category 0 is not permitted.
Depending on the interface Ixx or technology function Txx of the Compax3M, the
"energize" input can be a digital input or for instance a defined bit of a fieldbus
control word (see the overview table below).
In the I10T10, I11T11, I12T11, I2xT11 and I3xT11 devices, the ackn input is
assigned fixed.
Interface/Technology
"Energize"
Ackn
I10T10
Digital input I0 (X12/6)
I2 (X12/8)
I11T11
Digital input I2 (X12/8) (Energize & Ackn identical)
I12T11
Digital input I0 (X12/6) (Energize & Ackn identical)
I2xT11, I3xT11
I2xT11, I3xT11
Applications with fieldbusses
I11T30 and I11T40
Debounced digital input defined in the IEC program,
which leads to the enable input of the MCpower
function module
I2xT30, I2xT40, I3xT30
and I3xT40
Bit defined in the IEC program (debounced digital input
or via fieldbus) which is linked to the enable input of
the MCpower function module
C1xT30 and C1xT40
C20T30 and C20T40
Debounced digital input defined in the IEC program,
which leads to the enable inputs of several MCpower
function modules for different axes. The information is
passed on to the individual axes via the CANbus.
The acknowledement via the safety control UE410-MU3T5 is only necessary, if
after the disabling of the STO function, a danger to any person or to the machine
could arise due to automatic startup..
