MOSA Weld TS 400 YS, Руководство по эксплуатации и обслуживанию

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01/12/17 M34 (TS)_EN
ENGLISH
ENGLISH
The following functions are available with the EVO INSTRU-
MENTS welding control panel:
• A/V digital instrument board
• VRD function (Voltage Reduction Devise)
• Polarity inversion
• AUTOIDLE function
VRD SWITCH
It is possible to exclude the VRD function by
acting on the switch located inside the electric
box. The red LED will always be with no-load
and the green LED will light up during welding.
POLARITY INVERSION
(Optional on request only with the EVO INSTRUMENTS
welding control panel)
It allows to have the positive or negative wel-
ding polarity to the electrode holder.
It is used specially in the first run with cellulo -
sic electrodes to lower the bath temperature
and therefore make welding on low-thickness
pipes easier. To carry out the inversion of polarity, the action
has given by the switch which is both on the front panel of
the welding control and on the remote control. Selecting the
inversion command the voltage on the welding sockets goes
to zero, the power contactor is witched inside the machine and
the voltage reappears at the welding sockets.
A/V DIGITAL INSTRUMENTS BOARD
When the machine is switched on, the Ampere (Adc) instru-
ment will display the welding current relative to the position
of the knob (T) and the Volt (Vdc) instrument the open circuit
voltage present on the welding sockets. By turning the knob
(T) the Ampere (Adc) instrument will display the welding cur-
rent value corresponding to the position of the knob, while the
voltage value will remain the open circuit voltage.
During the welding process the instruments will display the
welding current and voltage values in real time
VRD FUNCTION (Voltage Reduction Device)
The VRD function (standard on some models with A / V digital
instrument board) fulfils the purpose of drastically reducing the
harm which may result to a person from inadvertent contact
with the electrode during non-welding pauses.
The protection acts by reducing the voltage to a safe value
(typically <13V) each time the welding process is interrupted
for a period longer than 3 seconds.
The proper operation of the VRD protection (in
the models where it is implemented) is monitored
by a couple of LEDs: one green and one red. Du-
ring welding the red LED is off and the green one
is on. When welding is stopped initially red LED
turns on. After 3 seconds the green LED will turns
on: this means that the voltage on the electrode
has been reduced to a safe value.
VRD
ON
OFF
V
R
D
M
34.1
USE AS WELDER
WELDING ARC CONTROL
Set the welding arc using adjuster knob
(P) so as to abtain, for the chosen current
value, the best arc characteristic according
to the electrode type and to the work to be
performed.
REV
.1-05/19
AUTOIDLE
The Autoidle function, available only with
EVO INSTRUMENT welding control panel, is
enabled when the selector is on AUTOIDLE
position.
When the machine is turned on, the engine
will runs at the minumum rpm.
After the recommed warm-up time, when
welding or auxiliary current are required, the engine will switch
automatically at the maximum rpm, allowing to have energy
power.
Stopping the request of welding or auxiliary current, the engine
will continue runs at maximum rpm for 15 seconds; ended this
period, without any other current supply request, the engine
will be back at the minimum rpm.
With MAX RPM position, the engine always runs at the maxi-
mum rpm.
ATTENTION
For machines with AUTOIDLE function and manual accelera-
tion lever, we recommend to use this control only in case of
possible failure or malfunction of AUTOIDLE function.
!
Volt Ampere
EVO INSTRUMENTS
Volt Ampere
Polarity
switch