Bosch Rexroth PSI 6 Series Operating Instructions Manual page 448

448 / 460 Bosch Rexroth AG
Abbreviations
Abbreviation Meaning
KUR Constant-voltage regulation
Compensates line voltage fluctuations.
LT Power unit (thyristor or inverter)
MF Medium Frequency
ms Milliseconds.
NBS Mains load limitation control
Monitors and influences the mains load.
NWI Post-warming pulse.
OFF Off Time.
Time between two spot welds in which the solenoid valve
is not driven. Relevant for Repeat mode only.
Option button Round object on the user interface for toggling a function
on/off.
P Cycles (mains cycles)
With a line frequency of 50 Hz: 1 P -> 20 ms.
With a line frequency of 60 Hz: 1 P -> 16.6 ms
PE Protective Earth. PE conductor.
PG Programming terminal/welding computer
PHA Phase angle
PLC Programmable Logic Controller
Post-heat Post-heating time, also referred to as PstWLD or 3.WLD
Pre-heat Pre-heating time, also referred to as PreWLD or 1.WLD
PreWLD Refer to Pre-heat.
PSF Process stability.
PSG Transformer-rectifier unit for PSI types.
PSI Programmable weld timer with inverter.
PST Programmable weld timer with thyristor power unit.
PstWLD Refer to Post-heat.
Radio Refer to "Option button".
button
REPEAT Repeat mode.
Operating mode for manually operated systems.
RO Relay output
Slope Current increase.
Current increases/decreases from an initial to a final heat
value.
Solenoid Solenoid valve.
Drives the gun cylinders for closing the electrodes
SINGLE Single spot operating mode.
For automatic and manual systems
SQZ Squeeze time.
Time that runs before the weld time. The electrodes
squeeze the parts to be welded together.
Stepper %I stepping in order to compensate for electrode wear
PSI 6xxx | 1070080028 / 08