GF Welding Weld334m, User Manual

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Weld334m - User’s manual
15
3. Power supply and 24V for I/O
3.1 Control device power supply
The power supply section resides on the PS 8way, 5.08mm pitch connector for
disconnectable terminals which are located on the front. Also housed on this connector is
the input for the external synchronism.
Either incoming direct current or alternated current is accepted by the control device (see
characteristics at paragraph 2.4).
The control device earthing is to be carried out by means of the faston terminal located at
the side of PS connector.
3.1.1 PS . Description of signals
8-way, 5.08mm pitch PS connector for disconnectable terminals
Pin Signal Description
1-2 PWR/RTN
Main power supply of the control device.
The device can be powered from either d.c. mains – from 18
to 36Vdc – and a.c. mains – from 14,4 to 32,4Vac – with no
need for the user to change the connections or the internal
settings.
If powered from a d.c. source, the pin polarity is irrespective
of this status.
NOTE: if the unit is fed from a d.c. supply, the external
synchronism must be used.
3-4 SYNC +/- External synch signal.
Sensitivity: 12-33Vac.
It permits the synchronisation with power supply on the
power side (SCR), through an insulation transformer
connected to the same phase.
This must be used when the unit is powered from a line
separate than that of the welding machine or when it is
powered from the d.c. mains.
If used, this signal must be configured on the power feeder
card through 2 jumpers (see paragraph 3.4).
5 24VI +24Vdc output, internal.
It is used when one wants to use +24V supply internal to the
device for powering the I/O.
It can be cut out for enabling 24V from a remote unit
(Robot).
For the connection, refer to paragraph 3.2.2 figure (b).
6 24VE 24Vdc external input for discrete, digital I/O.
Max. Load 1,5A.
For the connection, refer to paragraph 3.2.2 figures (c) and
(d).
7 0V Input for 0V external common for logic I/O.
For the connection, refer to paragraph 3.2.2 figures (c) and
(d).
8 Contact available for Earth connection.
For the connection, refer to paragraph 3.2.2