Displays And Pin Assignment - Bosch PSU 5000 Series Instructions For Assembly And Operation Manual

Controlling
the inverter

8.1.2 Displays and pin assignment

8--2
PSU 5000 / PSG 3000
Instructions for Assembly and Operation
"Weld time" LED
The LED is lighted when
-- 5 kHz firing pulses are received from the timer (at X5, pins 6 and 7)
"max. pulse width reached" display
The decimal point of the seven--segment display is lighted when
-- the maximum pulse width has been reached. In control operation, this display
appears only when the commanded current cannot be reached. In this case, the
inverter must have worked at the limit for at least 5 consecutive mains cycles.
Please note: The inverter continues working despite this display. It is not
switched off!
The following partial view of the inverter indicates only those elements which are
relevant for the functions mentioned above. For further elements, please refer to
section 11.
Weld time, green LED
Max. pulse width
(signalled by decimal point)
X5:
Pin 6: + firing 24 V, 30 mA
Pin 7: - - firing 24 V, 30 mA
1070 078 224--- 108