Features; Special Features; Control Stop; Function Start Tip Dress Request - Bosch Rexroth PSI 6 C 741-Serie Typspezifische Anleitung

R911332352 | PSI 6xCx.741
7

Features

Sequence standard 1000 Hz (sequence parameters in milliseconds)
I/O Module : E/A_DISKR2ED (Details refer to Tab1. Required and supplementary
documentation, Instruction Manual Rexroth PSI6xxx).
7.1

Special features

The welding controller features the following specifics:
• Control must run at a Fieldbus I/O network (On-Board Port)
• Control is prepared for an additional plug-in Ethernet-100CC-Port
• Control is prepared for the control system PSQ6000 XQR
• 24 VDC Stop Circuit open / no 24V, fault is automatically reset
• The DC link voltage is verified outside the sequence, the fault message is
automatically reset
• Steppers are reset: all 32 electrodes have the counter value „0"
• Input Transformer Temperature
• Output „Ready To Weld" corresponds exactly to the Output „No Fault (Major
Fault)".
7.1.1

Control Stop

Same function as opening Hardwire E-Stop Contacts. No interruption of 24VDC to
I/O.
„high" signal = ready to run, „low" signal = E-stop
7.1.2

Function Start Tip Dress Request

When this function is activated for a specific electrode a „Tip Dress Request" will
come immediately after the „Tip replaced" input signal.
7.1.3

Serial Input E_00 = Enable Weld

When the input is active during an Initiate Weld command, the timer will run a
sequence with weld current.
When the input is low during an Initiate Weld command, the timer will run a
sequence without weld current. In that case there will be a fault message at the
end of the sequence.
7.1.4

Function Weld Circuit Degradation

If the functionality „Weld Circuit Degradation" is enabled, the controller cross-
checks at the end of each weld schedule the weld current-to-phase angle ratio to
a programmable reference value.
Is the actual value out of a programmable tolerance, the controller generates an
error message.
To have this functionality running reliably, even at a nominal value change, e.g.
readjustment, the actual current value will be projected to a max value of 100% of
the power based on the actual phase angle for a start, and then compared with
the reference value of a 100% power.
Due to an influence of the fluctuations in mains voltage on this value also, the
tolerance band needs to be bigger than the system immanent fluctuations in
mains voltage.
This function can be switched on or off for each electrode (gun).
Bosch Rexroth AG 37/44
Features